Consulta: subjectFacets:"Pollution"
Registros recuperados: 200
Data/hora: 10/06/2024 07:49:17

Concentración de Diclorodifeniltricloroetano (DDT) en poblaciones silvestres de Cocodrilos (Crocodylus acutus y C. Moreletti) en la zona Costera de México
Provedor de dados: 32
Autores: Loa Loza, Eleazar.
Para determinar la concentración de DDT y sus metabolitos en ejemplares de cocodrilos (Crocodylus acutus y C. moreletii), durante el período de junio a diciembre de 2004 se tomaron 80 muestras de sangre en 37 localidades de 13 estados de la zona costera de México. En algunos de estos sitios, ha sido aplicado el DDT para el control del vector del paludismo. Las muestras fueron procesadas en el laboratorio mediante cromatografía de gases con detector de captura de electrones. Se realizó un análisis de regresión lineal simple entre la longitud y el peso de los cocodrilos. Para comparar las concentraciones de DDT en sangre en función de la longitud y peso de los cocodrilos en las provincias biogeográficas, se realizó el análisis de varianza utilizando un...
Tipo: Tesis
Palavras-chave: Reptiles; Crocodylus acutus; C. moreletii; DDT; Pesticidas; Contaminación; Maestría; Ganadería; Reptiles; Pesticide; Pollution.
Ano: 2007
URL: http://hdl.handle.net/10521/1565

Calidad de las aguas residuales de la Cuenca Lerma-Chapala
Provedor de dados: 32
Autores: Arteaga Cortez, Viviana María.
El agua es uno de los recursos naturales fundamentales, en que se apoya el desarrollo, constituyéndose como un apoyo fundamental para el progreso del hombre. El caso del agua es uno de los ejemplos más claros: un mayor suministro de agua significa una mayor carga de aguas residuales. Las aguas residuales son materiales derivados de residuos domésticos o de procesos industriales, los cuales no pueden desecharse vertiéndolas sin tratamiento en lagos o corrientes convencionales. En la actualidad  se cuenta con  una gran corriente que une el centro y el occidente del país, el río Lerma cubre 700 kilómetros, desde Toluca a Guadalajara. Este afluente tranquiliza la sed insaciable del Distrito Federal; cruza los complejos industriales del Estado de México y...
Palavras-chave: Río Lerma; Agua residual; Caracterización química; Contaminación; Presión osmótica; Relación de adsorción de sodio; Lerma River; Residual water; Chemical characterization; Pollution; Osmotic pressure; Relation of adsorption of sodium; Maestría; Hidrociencias.
Ano: 2010
URL: http://hdl.handle.net/10521/161

Uso y manejo de plantas ornamentales y medicinales en espacios urbanos, suburbanos y rurales de la zona centro de Veracruz, México.
Provedor de dados: 32
Autores: Mendoza-García, Rafaela.
En México los huertos y jardines pueden ser clasificados como agroecosistemas por la intervención humana en su manejo, el alto grado de biodiversidad y los usos antropocéntricos que tiene son semejante a ecosistemas naturales por conservar muchas especies. El acelerado desarrollo urbano no planificado ha restado gradualmente la superficie de áreas verdes y espacios para la producción de alimentos. Por ello, esta investigación planteó el objetivo de analizar el uso y manejo de plantas ornamentales y medicinales así como la percepción del público en jardines en zonas urbanas, suburbanas y rurales de la zona centro del Estado de Veracruz. Bajo la hipótesis de que existe un mayor conocimiento local de las plantas ornamentales y medicinales, diversidad vegetal...
Palavras-chave: Huertos; Jardines; Percepción; Conocimiento local; Contaminación; Orchards; Gardens; Perception; Local knowledge; Pollution; Agroecosistemas Tropicales; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/551

Valoración económica del agua del río Tlapaneco.
Provedor de dados: 32
Autores: Galindo de Jesús, Gerardo.
En la Cuenca del Río Tlapaneco la contaminación del agua es un problema creciente. Esta contaminación afecta negativamente la producción agrícola y pecuaria, así como otros servicios utilizados por la población local como la pesca y la recreación. En este estudio se tuvo como objetivo evaluar qué tanto percibe la población local la contaminación del río como un problema para su bienestar, así como el conocer cuál es su disposición a pagar para desarrollar proyectos que mejoren la calidad del agua del río. Debido a que en los estudios de valoración de bienes y servicios ambientales se requiere crear, temporal o hipotéticamente, un mercado para simular su transacción, debido a la inexistencia de un mercado real, en este estudio se utilizó el método de...
Palavras-chave: Río Tlapaneco; Percepción; Contaminación; Disposición a pagar; Tlapaneco river; Perception; Pollution; Willingness to pay; EDAR; Estrategias para el Desarrollo Agrícola Regional; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/536

Determinación de la concentración de metales pesados en agua, suelo y cultivos regados con agua de la Presa Manuel Avila Camacho.
Provedor de dados: 32
Autores: Larenas Bazán, Nelli Natalia.
La presa Manuel Ávila Camacho se construyó para aprovechar los escurrimientos de los ríos Atoyac y Alseseca, con propósitos de riego. La contaminación de estos ríos tiene su origen en las descargas de aguas residuales urbanas e industriales, y el uso de aguas residuales no tratadas para la irrigación de cultivos agrícolas, ha contribuido en la contaminación de suelos y plantas por metales pesados (MP), lo cual representa un riesgo para la salud humana y animal. En este sentido, el objetivo de la investigación consistió en la determinación de la concentración de MP, características físicas y químicas en agua residual y suelo, así como la concentración de MP en cultivos de maíz y alfalfa ubicados en los módulos uno, dos y tres del Distrito de Riego 030...
Palavras-chave: Contaminación; Metales pesados; Agua; Suelo; Planta; Pollution; Heavy metals; Water; Soil; Plant; EDAR; Estrategias para el Desarrollo Agrícola Regional; Maestría.
Ano: 2010
URL: http://hdl.handle.net/10521/271

Calidad de las aguas residuales de la Cuenca Lerma-Chapala
Provedor de dados: 32
Autores: Arteaga Cortez, Viviana María.
El agua es uno de los recursos naturales fundamentales, en que se apoya el desarrollo, constituyéndose como un apoyo fundamental para el progreso del hombre. El caso del agua es uno de los ejemplos más claros: un mayor suministro de agua significa una mayor carga de aguas residuales. Las aguas residuales son materiales derivados de residuos domésticos o de procesos industriales, los cuales no pueden desecharse vertiéndolas sin tratamiento en lagos o corrientes convencionales. En la actualidad  se cuenta con  una gran corriente que une el centro y el occidente del país, el río Lerma cubre 700 kilómetros, desde Toluca a Guadalajara. Este afluente tranquiliza la sed insaciable del Distrito Federal; cruza los complejos industriales del Estado de México y...
Palavras-chave: Río Lerma; Agua residual; Caracterización química; Contaminación; Presión osmótica; Relación de adsorción de sodio; Lerma River; Residual water; Chemical characterization; Pollution; Osmotic pressure; Relation of adsorption of sodium; Maestría; Hidrociencias.
Ano: 2010
URL: http://hdl.handle.net/10521/161

Fertilización orgánica-mineral en el cultivo de fresa, y evaluación de sustratos para la producción de lombriz (Eisenia foetida Sav.).
Provedor de dados: 32
Autores: Romero Romano, Carlos Osvaldo.
Actualmente el uso excesivo de fertilizantes sintéticos en la producción agrícola y el mal uso de estiércoles generados en las actividades pecuarias, ha generado una serie de problemas ambientales en todo el mundo, ejemplo de esto es la contaminación de las aguas superficiales y subterráneas por efecto de elementos como nitrógeno, en forma de nitrato, y fósforo, como fosfato, a la vez que cationes como potasio (K+), magnesio (Mg++), etc. Por otro lado, el uso excesivo de fertilizantes genera el empobrecimiento de los suelos agrícolas; debido a la pérdida de materia orgánica y la biota del suelo. Con base a esta problemática, en este trabajo se presentan tres investigaciones; que pueden resultar como alternativas para la reducción del uso de fertilizantes...
Palavras-chave: Alternativas; Contaminación; Medio ambiente; Alternatives; Environment; Pollution; EDAR; Estrategias para el Desarrollo Agrícola Regiona; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/647

Uso y manejo de plantas ornamentales y medicinales en espacios urbanos, suburbanos y rurales de la zona centro de Veracruz, México.
Provedor de dados: 32
Autores: Mendoza-García, Rafaela.
En México los huertos y jardines pueden ser clasificados como agroecosistemas por la intervención humana en su manejo, el alto grado de biodiversidad y los usos antropocéntricos que tiene son semejante a ecosistemas naturales por conservar muchas especies. El acelerado desarrollo urbano no planificado ha restado gradualmente la superficie de áreas verdes y espacios para la producción de alimentos. Por ello, esta investigación planteó el objetivo de analizar el uso y manejo de plantas ornamentales y medicinales así como la percepción del público en jardines en zonas urbanas, suburbanas y rurales de la zona centro del Estado de Veracruz. Bajo la hipótesis de que existe un mayor conocimiento local de las plantas ornamentales y medicinales, diversidad vegetal...
Palavras-chave: Huertos; Jardines; Percepción; Conocimiento local; Contaminación; Orchards; Gardens; Perception; Local knowledge; Pollution; Agroecosistemas Tropicales; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/551

Caracterización aerobiológica de ambientes intramuro en presencia de cubiertas vegetales
Provedor de dados: 32
Autores: Díaz Rojas, Martín.
La contaminación del aire en espacios de intramuros es considerada como una amenaza para la salud. Recientes estudios han demostrado que una variedad de plantas de interior pueden remover diversos contaminantes del aire. Ante esta problemática, es importante conocer el tipo y concentración de esporas fúngicas dispersas en el aire, responsables de enfermedades en el hombre y la influencia que pueden tener las plantas en áreas de intramuro. Se muestrearon  esporas de hongos aéreas en 3 oficinas ubicadas en el edificio de documentación y biblioteca del Colegio de Postgraduados Campus Montecillo, México. Dos etapas se contemplaron: la primera sin plantas y la segunda con plantas. El trabajo de campo se realizó durante tres semanas del 12 al 16 de marzo; 16 al...
Tipo: Tesis
Palavras-chave: Contaminación; Aire; Ornamentales; Deuteromicetos; Andersen; Pollution; Air; Ornamental; Deuteromicetos.
Ano: 2008
URL: http://hdl.handle.net/10521/1176

Tratamiento de aguas residuales con humedales artificiales en Tlapanaloya, municipio de Tequisquiac, Estado de México.
Provedor de dados: 32
Autores: Avelar Roblero, Juan Uriel.
La presente tesis tiene como objeto proponer, mostrar y validar una alternativa basada en el uso y acondicionamiento de humedales artificiales, para resolver el problema de salud pública y contaminación ambiental que genera la descarga de aguas residuales. El campo de estudio y evaluación fue la cabecera municipal de Hueypoxtla, Estado de México, cuyas aguas residuales vierten directamente al cauce del Río Salado, el cual cruza por la comunidad de Tlapanaloya, municipio de Tequisquiac, Estado de México. Además de realizar el diseño, se construyó el tren de tratamiento que incluye: pretratamiento mediante un desarenador y sedimentador preliminar; tratamiento primario mediante un sistema modificado de tanque Imhoff y el tratamiento secundario utilizando 6...
Palavras-chave: Salud pública; Contaminación ambiental; Humedales artificiales; Diseño; Construcción; Public health; Pollution; Constructed wetlands; Design; Built; Hidrociencias; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/529

Valoración económica del agua del río Tlapaneco.
Provedor de dados: 32
Autores: Galindo de Jesús, Gerardo.
En la Cuenca del Río Tlapaneco la contaminación del agua es un problema creciente. Esta contaminación afecta negativamente la producción agrícola y pecuaria, así como otros servicios utilizados por la población local como la pesca y la recreación. En este estudio se tuvo como objetivo evaluar qué tanto percibe la población local la contaminación del río como un problema para su bienestar, así como el conocer cuál es su disposición a pagar para desarrollar proyectos que mejoren la calidad del agua del río. Debido a que en los estudios de valoración de bienes y servicios ambientales se requiere crear, temporal o hipotéticamente, un mercado para simular su transacción, debido a la inexistencia de un mercado real, en este estudio se utilizó el método de...
Palavras-chave: Río Tlapaneco; Percepción; Contaminación; Disposición a pagar; Tlapaneco river; Perception; Pollution; Willingness to pay; EDAR; Estrategias para el Desarrollo Agrícola Regional; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/536

Tratamiento de aguas residuales con humedales artificiales en Tlapanaloya, municipio de Tequisquiac, Estado de México.
Provedor de dados: 32
Autores: Avelar Roblero, Juan Uriel.
La presente tesis tiene como objeto proponer, mostrar y validar una alternativa basada en el uso y acondicionamiento de humedales artificiales, para resolver el problema de salud pública y contaminación ambiental que genera la descarga de aguas residuales. El campo de estudio y evaluación fue la cabecera municipal de Hueypoxtla, Estado de México, cuyas aguas residuales vierten directamente al cauce del Río Salado, el cual cruza por la comunidad de Tlapanaloya, municipio de Tequisquiac, Estado de México. Además de realizar el diseño, se construyó el tren de tratamiento que incluye: pretratamiento mediante un desarenador y sedimentador preliminar; tratamiento primario mediante un sistema modificado de tanque Imhoff y el tratamiento secundario utilizando 6...
Palavras-chave: Salud pública; Contaminación ambiental; Humedales artificiales; Diseño; Construcción; Public health; Pollution; Constructed wetlands; Design; Built; Hidrociencias; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/529

Variance as a Leading Indicator of Regime Shift in Ecosystem Services
Provedor de dados: 7
Autores: Brock, William A; University of Wisconsin-Madison; WBrock@ssc.wisc.edu; Carpenter, Stephen R; University of Wisconsin-Madison; srcarpen@wisc.edu.
Many environmental conflicts involve pollutants such as greenhouse gas emissions that are dispersed through space and cause losses of ecosystem services.  As pollutant emissions rise in one place, a spatial cascade of declining ecosystem services can spread across a larger landscape because of the dispersion of the pollutant.  This paper considers the problem of anticipating such spatial regime shifts by monitoring time series of the pollutant or associated ecosystem services.  Using such data, it is possible to construct indicators that rise sharply in advance of regime shifts. Specifically, the maximum eigenvalue of the variance-covariance matrix of the multivariate time series of pollutants and ecosystem services rises prior to the regime shift. No...
Tipo: Peer-Reviewed Reports
Palavras-chave: Ecological economics; Ecosystem service; Indicators; Markets; Pollution; Regime shifts; Thresholds; Variance.
Ano: 2006

River Rehabilitation for Conservation of Fish Biodiversity in Monsoonal Asia
Provedor de dados: 7
Autores: Dudgeon, David; University of Hong Kong; ddudgeon@hkucc.hku.hk.
Tipo: Peer-Reviewed Reports
Palavras-chave: Restoration; Rehabilitation; Dams; Pollution; Fisheries; Yangtze; Mekong; Ganges; Salween; River management.
Ano: 2005

Assessment of water quality in temperate-plain streams (Argentina, South America) using a multiple approach
Provedor de dados: 67
Autores: Ocon,Carolina S.; Rodrigues Capítulo,Alberto.
We assessed the water quality in two pampean lotic systems (Argentina), the Juan Blanco and Buñirigo streams, subjected to different land uses (i.e., the UNESCO Biosphere Nature Reserve vs. industry and agriculture, respectively) through measurements of physicochemical data and the structural parameters of the macroinvertebrate assemblages in addition to ecotoxicological analyses. The objective was to identify the degree of ecological impairment in adversely affected areas and the consequent effects on the biota. The results obtained allowed the establishment of different water-quality classes within the study area. According to the indices applied, the downstream zone of the Buñirigo stream was categorized as moderately polluted on the basis of losses of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Macroinvertebrates; Physicochemical parameters; Ecotoxicological analyses; Pampean streams.
Ano: 2012
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2012000200001

Cloroplast pigments as indicators of lead stress
Provedor de dados: 70
Autores: Gomes,Silvânia M. de S.; Lima,Vera Lucia A. de; Souza,Adailson P. de; Nascimento,Joab J. V. R. do; Nascimento,Everaldo S. do.
Plants respond to environmental adversities, becoming an indicator for assessing the environment quality. In this aspect, chlorophyll contents as well, carotenoids are used as a reliable indicator to associate environmental quality and pollution, mainly regarding the toxicity of heavy metals in higher plants. So, we aimed to evaluate the content of chlorophyll a, b, and total chlorophylls and carotenoids in plants vetiver [Vetiveria zizanioides (L.) Nash], maize (Zea mays L.) cv. AG 1051, sunflower (Helianthus annuus L.) cv. BRS 122/V-2000, and castor beans (Ricinus communis L. ) cv . Northeastern BRS grown in contaminated soil with lead, with and without correction of soil pH, so they were used as indicators of metal stress by the soil. From the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metal; Pollution; Photosynthesis.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000500007

Genotoxicity biomonitoring of sewage in two municipal wastewater treatment plants using the Tradescantia pallida var. purpurea bioassay
Provedor de dados: 74
Autores: Thewes,Márcia Regina; Endres Junior,Delio; Droste,Annette.
The genotoxicity of untreated and treated sewage from two municipal wastewater treatment plants (WTP BN and WTP SJN) in the municipality of Porto Alegre, in the southern Brazilian state of Rio Grande do Sul, was evaluated over a one-year period using the Tradescantia pallida var. purpurea (Trad-MCN) bioassay. Inflorescences of T. pallida var. purpurea were exposed to sewage samples in February (summer), April (autumn), July (winter) and October (spring) 2009, and the micronuclei (MCN) frequencies were estimated in each period. The high genotoxicity of untreated sewage from WTP BN in February and April was not observed in treated sewage, indicating the efficiency of treatment at this WTP. However, untreated and treated sewage samples from WTP SJN had high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Micronucleus; Mutagenicity; Pollution; Trad-MCN.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400023

Assessment of ecological risk to populations of aquatic invertebrates
Provedor de dados: 13
Autores: Tsytsugina, V. G.
On the base of experimental data and cytogenetic studies of marine and freshwater invertebrates natural populations it was shown that different species had approximately equal part (%) of full value posterity at the same average level of chromosome mutagenesis for populations, independing on deleterious factors and females fecundity. This phenomenon made it possible to calculate specimens reproductive contribution for species with different females fecundity and to assess expected reduction of population adaptive potential and the increase of ecological risk at different levels of population damage. It is suggested that the adaptation to pollution will be more effective in populations with high female fecundity.
Tipo: Journal Contribution
Palavras-chave: Aquatic invertebrates; Pollution; Fecundity; Adaptation; Ecological risk assessment; Водные беспозвоночные; Загрязнение; Плодовитость; Адаптация; Оценка экологического риска.
Ano: 2009
URL: http://repository.ibss.org.ua/dspace/handle/99011/1085

Бактериальная трансформация нефтяных углеводородов в прибрежной зоне моря
Provedor de dados: 13
Autores: Миронов, О. Г.
На основе собственных исследований и анализа литературных данных обсуждается бактериальная трансформация нефтяных углеводородов как составная часть самоочищения моря от нефти. Анализируются различные факторы, влияющие на скорость и полноту трансформации нефтяных углеводородов в прибрежной зоне моря. Указывается, что знание этих процессов позволит эффективно управлять экологическим состоянием в прибрежной зоне моря.
Tipo: Journal Contribution
Palavras-chave: Бактерии; Нефть; Загрязнение; Самоочищение; Прибрежная зона; Bacterium; Oil; Pollution; Selfpurification; Coastal zone of sea Oil Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/141

Химический состав зеленой водоросли  Enteromorpha Intestinalis (L.) Link  из обрастаний причалов Севастопольских бухт (Черное море)
Provedor de dados: 13
Autores: Муравьева, И. П.
Изучена сезонная динамика химического состава зеленой водоросли Enteromorpha intestinalis (L.) Link  (белок, аминокислоты, свободные нуклеотиды, РНК, ДНК, кислоторастворимые, щелочерастворимые, трудногидролизуемые углеводы, моносахариды и полисахариды,  липиды, углеводороды, хлорофиллы "а" и "в", каротиноиды) из двух бухт Севастополя (Черное море) - Нефтегавани (загрязненный район) и Казачьей (условно чистый). Энтероморфа из Нефтегавани во все сезоны  содержит больше свободных нуклеотидов, ДНК, РНК, липидов, углеводородов и пигментов, но отличается меньшим содержанием углеводов по сравнению с водорослями из б. Казачьей.
Tipo: Journal Contribution
Palavras-chave: Макрофиты; Сезонная динамика; Белок; Углеводы; Липиды; Нуклеотиды; Загрязнение; Pollution; Carbohydrates; Lipids; Nucleotides; Protein; Macrophytes Lipids Carbohydrates Proteins Nucleotides Pollution Carbohydrates Pollution Nucleotides Lipids Proteins http://aims.fao.org/aos/agrovoc/c_1300 http://aims.fao.org/aos/agrovoc/c_6077 http://aims.fao.org/aos/agrovoc/c_5259 http://aims.fao.org/aos/agrovoc/c_4362 http://aims.fao.org/aos/agrovoc/c_6259.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/388

Экологическая характеристика бухты Казачьей (Черное море)
Provedor de dados: 13
Autores: Миронов, О. Г.; Кирюхина, Л. Н.; Алемов, С. В.
Впервые приводятся материалы санитарно-гигиенических исследований акватории бухты Казачьей в 1966 - 1967 гг. и данные дальнейшего изучения этого региона, вплоть до 2000 г. Показана динамика изучения экологических показателей морской среды и их стабилизация в последние годы.
Tipo: Journal Contribution
Palavras-chave: Загрязнение; Экологические показатели; Pollution; Ecological indexes Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2002
URL: http://repository.ibss.org.ua/dspace/handle/99011/417

Organic carbon and oil hydrocarbons in bottom sediments of  Sevastopol Bay (the Black Sea)
Provedor de dados: 13
Autores: Osadchaya, T. S.; Ovsyaniy, E. I.; Romanov, A. S.; Ignatieva, O. G.
The paper summarizes data available from the literature and recently obtained about interannual variations of the content of organic carbon, chloroform bitumenoids and oil hydrocarbons found in bottom sediments of Sevastopol Bay (Black Sea). For the recent years the bottom sediment has been receiving a rich inflow of organic matter. Localities where organic carbon content is especially high appeared owing to special sedimentation conditions and unevenly distributed anthropogenic load on the bay's water area. As the result, such sediments have reductive properties which foster accumulation of bitumenoids and oil hydrocarbons.
Tipo: Journal Contribution
Palavras-chave: The Black Sea; Bottom sediment; Organic carbon; Bitumenoid; Oil hydrocarbon; Pollution; Черное море; Донные осадки; Органический углерод; Битумоиды; Нефтяные углеводороды; Загрязнение Organic carbon Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/41

Природный радионуклид 210Pb в донных отложениях Севастопольской бухты (Черное море)
Provedor de dados: 13
Autores: Лазоренко, Г. Е.
Представлены первые результаты определения концентраций природного радионуклида 210Рb в донных от-ложениях Севастопольской бухты (Черное море). Их величины варьировали от 6.1 до 38.7 Бкּкг-1 сухой мас-сы вещества, при этом самые высокие из них были определены в образцах, отобранных внутри бухты Юж-ная, в местах выхода из нее и из бухты Килен. Характер распределения 210Рb в донных отложениях Севасто-польской бухты свидетельствует о приуроченности его высоких концентраций к местам стоянок морских судов и сброса неочищенных сточных и ливневых вод. Предлагается использовать 210Рb в качестве одного из индикаторов распределения подобного типа загрязнения в донных отложениях бухт, относительно закрытых от открытой части моря.
Tipo: Journal Contribution
Palavras-chave: Природный радионуклид; 210Рb; Донные отложения; Загрязнение; Севастопольская бухта; Индикатор; Городские сточные воды; Natural radionuclide; 210Рb; Bottom sediments; Pollution; Sevastopol Bay; Indicator; City waste water; Bio-inert systems; Biogeochemistry; Living space; The Biosphere Indicators Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/40

Уровни загрязнения ливневого стока, поступающего в бухты Севастополя (Чёрное море)
Provedor de dados: 13
Autores: Беляева, О. И.
Рассчитан уровень загрязнения ливневых стоков, ежегодно поступающих в Севастопольские бухты Чёрного моря.
Tipo: Journal Contribution
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2007
URL: http://repository.ibss.org.ua/dspace/handle/99011/578

Загрязнение Геленджикской бухты ливневым стоком
Provedor de dados: 13
Autores: Крыленко, В. В.; Есин, Н. В.
Проанализированы результаты гидрохимических съёмок в акватории Геленджикской бухты, выполненных с целью определения объемов загрязняющих веществ, выносимых ливневыми стоками. Установлено, что загрязнение морской воды проявляется в образовании отдельных линз с высокой концентрацией загрязняющих веществ вблизи источников загрязнения. В Геленджикской бухте коэффициент горизонтального обмена воды очень мал, поэтому пятна «грязной» воды сохраняются в течение длительного времени. Во время действия ветра, направленного с берега в море, загрязненная вода уходит в море, её замещает чистая вода открытого моря. Рассчитаны объемы сбрасываемых в бухту нефтепродуктов и тяжелых металлов.
Tipo: Journal Contribution
Palavras-chave: Pollution; Oil pollution; Heavy metals; Heavy metals; Pollution; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2001
URL: http://repository.ibss.org.ua/dspace/handle/99011/570

Antropogenic radionuclides in plants, animals and their environments in Antarctica
Provedor de dados: 13
Autores: Giuliani, S.; Triulz, C.; Vaghi, M.
In the framework of the Italian National Research Program in Antarctica (PNRA), the Laboratory of Radioecology of the University of Parma developed from 1987 several researches on terrestrial and marine samples. At first the prin-cipal aim was the study of 90Sr, 137Cs, 238Pu, 239+240Pu and 241Am concentrations in samples of soil, ice, seawater and biota collected near the Italian Antarctic Base (Ross Sea, Terra Nova Bay).
Tipo: Journal Contribution
Palavras-chave: Antarctica; Pollution; 137Cs; 239+240Pu; 238Pu and 241Am; Антарктика; Загрязнение Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/39

Микрофлора морских донных отложений в местах захоронения остатков химического оружия
Provedor de dados: 13
Autores: Смирнова, Л. Л.; Андреева, Н. А.; Антонова, Л. С.; Мисюра, А. Г.; Гурик, В. В.
Приведены результаты изучения жизнеспособной микрофлоры морских донных отложений в местах утечки из контейнеров, затопленных во Второй Мировой войне (XX век), соединений из класса β-хлорорганических сульфидов. Отмечена активность сапрофитной микрофлоры, микроорганизмов, разрушающих органические вещества в процессе тионового хемосинтеза и тиоденитрификации, ассоциаций азотфиксирующих бактерий. В донных отложениях возрастает содержание органического вещества до 36,5 - 44,2%, суммарное содержа­ние сера достигает 10 - 15%. что в 50 - 100 раз выше, чем в условно чистых биотопах
Tipo: Journal Contribution
Palavras-chave: Черное море; Донные отложения; Загрязнение; Β-хлорорганические сульфиды; Микроорга­низмы; Black Sea; Bottom sediments; Pollution; Β-chlorine-organic sulphides; And microorganisms Microorganisms Sulphides Pollution Pollution Microorganisms Sulphides http://aims.fao.org/aos/agrovoc/c_6077 http://aims.fao.org/aos/agrovoc/c_4807 http://aims.fao.org/aos/agrovoc/c_7511.
Ano: 2005
URL: http://repository.ibss.org.ua/dspace/handle/99011/222

Исследование различных сценариев радиоактивного загрязнения вод Черного моря  на основе имитационного моделирования
Provedor de dados: 13
Autores: Еремеев, В. Н.; Демышев, С. Г.; Чудиновских, Т. В.; Запевалов, А. С.
На основе имитационного численного моделирования анализируются последствия Чернобыльской аварии, а также два сценария гипотетически возможных радиоэкологических катастроф вследствие  действия источников на дне и боковых границах бассейна. Для задания начальных и граничных условий в первом случае используются данные натурных наблюдений. Проведен численный анализ эволюции полей концентрации радионуклидов чернобыльского происхождения и их сравнение с данными натурных радиоизотопных наблюдений. Показано, что область высоких уровней загрязнения, обнаруженная в июне 1986 г. у берегов Крыма, сформировалась в результате переноса загрязненных водных масс из восточной части моря. Выполнен анализ возможных последствий утечки радиоактивных веществ из контейнера,...
Tipo: Journal Contribution
Palavras-chave: Черное море; Радиоактивные изотопы; Загрязнение; Имитационное моделирование; Black Sea; Radioactive isotopes; Pollution; Imitation modeling Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2004
URL: http://repository.ibss.org.ua/dspace/handle/99011/65

Panorama da contaminação ambiental por agrotóxicos e nitrato de origem agrícola no Brasil: cenário 1992/2011.
Provedor de dados: 14
Autores: GOMES, M. A. F.; BARIZON, R. R. M.
O objetivo deste trabalho foi identificar e avaliar o cenário de uso e presença de agrotóxicos e fertilizantes nitrogenados no Brasil, com destaque para o nitrato (N-NO3-), tendo como referência a legislação pertinente ao tema e à base de dados gerados pela comunidade científica nas últimas duas décadas. Com isso, espera- se obter um diagnóstico mais próximo da realidade sobre a presença e contaminação do solo e da água por estas substâncias, para que assim esse diagnóstico sirva de alerta, e principalmente, de apoio às iniciativas direcionadas ao controle e uso racional dessas substâncias.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Brasil; Meio ambiente; Poluição ambiental; Agrotóxico; Nitrato; Pollution; Environment; Pesticides; Agrochemicals; Nitrate fertilizers.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/987245

Manual de manejo e utilização dos dejetos de suínos.
Provedor de dados: 14
Autores: OLIVEIRA, P. A. V. de.
Caracteristicas principais dos dejetos; Principais técnicas de tratamento dos dejetos; Tratamento de dejetos nas pequenas e grandes propriedades produtoras de suínos; Técnicas de valorização dos dejetos suínos e seus produtos; Controle integrado de moscas nas criações de suínos; Técnicas construtivas em edificações para o aproveitamento dos dejetos.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Adubação orgânica; Controle; Waste; Management; Fly; Control; Organic Fertilizer.; Dejeto; Manejo; Mosca; Poluição; Suíno.; Pollution; Swine.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/434003

Aspectos sanitarios da agua para fins de irrigacao.
Provedor de dados: 14
Autores: MAROUELLI, W. A.; SILVA, H. R. da.
Doencas transmissiveis; Esquistossomose; Analise da agua e alimentos; Classificacao e possibilidades de uso da agua; Esterilizacao de hortalicas e frutas; Tratamento da agua.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Diseases.; Doença; Hortaliça; Irrigação; Poluição; Qualidade da Água.; Irrigation; Pollution; Vegetables; Water quality.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/761884

The integrated biomarker response revisited: optimization to avoid misuse
Provedor de dados: 5
Autores: Devin, S.; Burgeot, Thierry; Giamberini, L.; Minguez, L.; Pain-devin, S.
The growing need to evaluate the quality of aquatic ecosystems led to the development of numerous monitoring tools. Among them, the development of biomarker-based procedures, that combine precocity and relevance, is recommended. However, multi-biomarker approaches are often hard to interpret, and produce results that are not easy to integrate in the environmental policies framework. Integrative index have been developed, and one of the most used is the integrated biomarker response (IBR). However, an analysis of available literature demonstrated that the IBR suffers from a frequent misuse and a bias in its calculation. Then, we propose here a new calculation method based on both a more simple formula and a permutation procedure. Together, these...
Tipo: Text
Palavras-chave: Biomarkers; Integrated Index; Environmental risk assessment; Pollution; Water Framework Directive.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00176/28712/27276.pdf

A World for Reactive Phenotypes
Provedor de dados: 5
Autores: Geoffroy, Benjamain; Alfonso, Sebastien; Sadoul, Bastien; Blumstein, Daniel T.
Humans currently occupy all continents and by doing so, modify the environment and create novel threats to many species; a phenomenon known as human-induced rapid environmental changes (HIREC). These growing anthropogenic disturbances represent major and relatively new environmental challenges for many animals, and invariably alter selection on traits adapted to previous environments. Those species that survive often have moved from their original habitat or modified their phenotype through plasticity or genetic evolution. Based on the most recent advances in this research area, we predict that wild individuals with highly plastic capacities, relatively high basal stress level, and that are generally shy—in other words, individuals displaying a reactive...
Tipo: Text
Palavras-chave: Coping style; Antipredator behavior; Evolution; Stress physiology; Ecology; Predation; Urbanization; Pollution.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00664/77564/79528.pdf

Observations préliminaires recueillies dans l'exécution des programmes entrepris par la station biologique de Roscoff
Provedor de dados: 5
Autores: Bergerard, S.
We have tried to expose here the first observations on the basis of , previous knowledge and studies in progress when the wreck arrived, in particulary of benthic Populations Dynamics by the workers of the Biological Station. These results, still very fragmentary, allow never the less to definite the programs required for the second phase, essentially on the populations of fine deposits of the Morlaix and Lannion bays.
Tipo: Text
Palavras-chave: Pollution; Hydrocarbures; Amoco Cadiz; Sédiments; Phytoplancton; Macrobenthos; Meiobenthos; Microbenthos; Baie de Morlaix; Baie de Lannion; Pollution; Hydrocarbons; Amoco Cadiz; Sediments; Phytoplancton; Macrobenthos; Meiobenthos; Microbenthos; Morlaix Bay; Lannion Bay.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41725/40936.pdf

Etude de la mortalité des moules dans le Pertuis Breton en 1989
Provedor de dados: 5
Autores: Dardignac, Marie-jose; Bodoy, Alain; Garnier, Jacqueline; Heurtebise, Serge; Legrand, Jacqueline.
Une recherche des causes de la mortalité des moule au printemps dans le Pertuis Breton a été entreprise en 1989. La faible pluviométrie observée cette année là n'a pas entrainé de dessalures importantes et les mortalités constatées ont été si faibles qu'elles n 'ont pas eu de conséquences sur la production de moules. Les essais réalisés en milieu contrôlé ont montré que même pendant la période de reproduction au cours de laquelle les moules sont plus fragiles, il fallait des salinités inférieures à 15 p . mille et se maintenant pendant plusieurs jours avant que des mortalités n 'apparaissent. Il est prévu de remettre le même programme en place au printemps 1990.
Tipo: Text
Palavras-chave: Moules; Bouchots; Mortalités; Pollution; Pertuis Breton.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00048/15902/13330.pdf

Méthodologie des études bactériologiques de zones conchylicoles
Provedor de dados: 5
Autores: Catherine, Martial.
L'évolution des conditions de contrôle de la qualité des eaux conchylicoles, a abouti, à partir de 1979, à la mise en place progressive d'une réglementation européenne relative aux conditions sanitaires des zones de production et à la mise en marché de mollusques bivalves vivants (directive du Conseil (CEE) du 15 juillet 1991).  Cette directive impose la mise en place d'un système de surveillance périodique. Le choix de la stratégie d'échantillonnage est laissé à l'initiative de l'autorité compétente de chaque Etat, en fonction des normes définies.  L'imprécision des mesures de densité bactérienne, la variabilité des contaminations dans l'espace et le temps, le degré de représentativité de l'échantillonnage montre l'étendue des difficultés rencontrées lors...
Tipo: Text
Palavras-chave: Eaux conchylicoles; Pollution; Coliformes fécaux; Normes; Stratégie d'échantillonnage; Plan de sondage; Statistique; Guide méthodologique.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00107/21809/19384.pdf

Programme de recherche sur les produits phytosanitaires en zones littorales et estuaires
Provedor de dados: 5
Autores: Tronczynski, Jacek.
This report represents sorne thoughts and the bibliographical review focused on an appraisal of the geochemical fate in freshwater and marin environments of principal pesticides used on French littoral. The sources and routes of entry, concentrations, distribution between non-living compartments and main degradation processes of these xenobiotic substances in the aquatic environment are presented.
Tipo: Text
Palavras-chave: Produits phytosanitaires; Pollution; Environnement aquatique; Littoral.; Pesticides; Pollut~on; Aquatic environment; Littoral.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00132/24302/22300.pdf

Lagune de Salses - Leucate. I - Analyse bibliographique.
Provedor de dados: 5
Autores: Ladagnous, Helene; Le Bec, Claude.
Subjected to multiple modifications which are responsible for important disruption in the functionning of the lagoon ecosystem during the last decenies, this lagoon is one of the most important sites for the region economy. The aim of this study is to propose a knowledges synthesis utilizable for a future fitting and management water plan. In fact, many studies realized during the last years are obsolete or uncompleted to explain the present state. Hydrogeololical studies, the most important, are not completed to understand the karst-lagoon relations. The wind-driven flow in the closed bassin, must be considered to explain biogeochemical process and the sewage discharges dispersal in the lagoon. Numerical models, with new physicochemical data, appear to be...
Tipo: Text
Palavras-chave: Lagune; Méditerranée; Leucate; Salses; Géographie; Climatologie; Géologie; Hydrologie; Physico-chimie; Biologie; Pollution; Socio-économie; Règlementation; Lagoon; Mediterranean; Leucate; Salses; Geography; Climatology; Geology; Hydrology; Physico-chemistry; Biology; Pollution; Socio-economy; Legislation.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00073/18422/15963.pdf

Bilans de santé des organismes et des écosystèmes marins. Quels signaux biologiques mesurer ?
Provedor de dados: 5
Autores: Devauchelle, Nicole.
Organisms living in marine waters are numerous and varied. Examiningtheir biological signaIs could he/p to evaluate and protect their health and that of their environment. This publication focuses on this topic, answering the fo/lowing questions: What are the measurable biological signaIs in marine organisms? Do they reflect the state of health of individuals, populations or ecosystems? Can they provide information about the specificity and level of chemical pollution? Are measurement results From bioassays useful in predicting and limiting ecological dysfunctions? ln conclusion, an integrated, operational approach is proposed to carry out environmental assessments which take biological and spatiotemporal diversity in marine waters into account. [NOT...
Tipo: Text
Palavras-chave: Health; Pollution; Homeostasis; Imbalance; Abnormalities; Aquatic; Marine ecosystems; Santé; Pollution; Homéostasie; Déséquilibre; Aquatique; Écosystèmes; Milieu marin.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/rapport-4195.pdf

X - Variation de la concentration en métaux lourds dans l'eau, les mollusques et le sédiment d'un bassin aménagé
Provedor de dados: 5
Autores: Vicente, N.; Chabert, D.
The study of variations in the concentration of heavy metals inside a tank filled with the water of a neighbouring lagoon has been carried out since August 1977•The analysis concerned a lagoon station and the bath built for ECOTRON program, closed to this lagoon. They deal with water, molluscs and the sediment. Inside the lagoon station, the tested molluscs are Prosobranch Gastropods : Trochocochlea carinata and inside the basin, cockles : Cerastoderma glaucum. The results point out that the concentration of these heavy metals vary with the tissue in relation with physical and chemical medium parameters, and it can be particularly observed a significative correlation between both the whole concentration of these elements inside the sediment and the...
Tipo: Text
Palavras-chave: Pollution; Métaux lourds; Lagune; Méditerranée; Pollution; Heavy metals; Lagoon Mediterranean sea.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00306/41675/40884.pdf

Factors determining the distribution of foraminiferal assemblages in Port Joinville Harbor (Ile d'Yeu, France): the influence of pollution
Provedor de dados: 5
Autores: Debenay, Jean-pierre; Tsakiridis, Erica; Soulard, René; Grossel, Hubert.
Port Joinville harbor is located on an island. Thus, it receives only a few freshwater inputs, contrary to most of the areas where the influence of pollution on foraminiferal assemblages has been studied. The pollution in the harbor mainly results from the boats, including cleaning, painting and outfall of oil and motor-fuel.A total of 59 sediment samples was collected at three sampling periods (November-December 1997, May 1998 and September 1998). These samplings were supplemented by the study of algal flora and macrobenthos and by the study of water circulation by means of six stations where water was collected every hour during a tide cycle. Contaminants were analyzed in the last series of 17 samples. Total assemblages were used for this study. This...
Tipo: Text
Palavras-chave: France; Atlantic; Harbor; Pollution; Bioindicators; Foraminifera.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/publication-764.pdf

The airborne identification of oil films at the Caspian sea surface using CO2 lidar
Provedor de dados: 5
Autores: Osadchy, Vu; Shifrin, Ks; Gurevich, Iy.
Contrast in the reflectivity between pure and contaminated sea surfaces is the result of two effects, namely: (1) the different reflectivity of sea water and oil films on sea water, and (2) the damping effect by the oil film on the sea waves. The problem is to estimate the contribution of these two effects on the total contrast, so that the substance effect can be calculated. Magnitude is related to the oil film thickness. The spectral behaviour of the contrast and its relationship with the film thickness were calculated for an undisturbed sea surface. The estimate of the damping effect was made using the Cox and Munk's slope distributions for pure and contaminated surfaces. The method chosen was verified by a series of tests conducted over the Caspian Sea...
Tipo: Text
Palavras-chave: Hydrocarbure; Caractéristique optique; Pollution; Surface de la mer; Télédétection; Oil; Optical constant; Pollution; Sea surface; Remote sensing.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43628/43255.pdf

Impact of wastewater treatment plant discharges on macroalgae and macrofauna assemblages of the intertidal rocky shore in the southeastern Bay of Biscay
Provedor de dados: 5
Autores: Huguenin, L.; Lalanne, Y.; De Casamajor, Marie-noelle; Gorostiaga, J.-m.; Quintano, E.; Salerno, M.; Monperrus, M.
Rocky intertidal habitats are particularly vulnerable to anthropogenic pressures especially in areas with high urban concentrations such as southeastern Bay of Biscay. This research aims to establish an assessment of the potential impact of sewage discharges on intertidal rocky benthic assemblages on macroalgae and on macrofauna as required by the European Directives (Water Framework Directive -WFD and Marine Strategy Framework Directive -MSFD). The assemblages were sampled at five locations according to a control-impact design. A moderate detectable effect of discharges was highlighted on the assemblage structure by means of multivariate analyses but this was less evident using other biological and ecological metrics. Results would also suggest that...
Tipo: Text
Palavras-chave: Benthic communities; Bioindicators; Impacts; Pollution; Sewage; Marine strategy framework directive.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00494/60587/64070.pdf

Estimation de la qualité biologique de l'eau sur le littoral atlantique du Sud-Ouest de la France à l'aide des tests de croissance des larves de Mytilus edulis
Provedor de dados: 5
Autores: His, Edouard; Quiniou, Francoise.
The quality of the seawater off the southwestern Atlantic coast of France was assessed by studying the effects of the water from three sites (Arcachon Bay, Mimizan and Capbreton) on larvae of the mussel (Mytilus edulis). Mussel larvae were raised in water samples taken at all three sites on March 12, 1991 and larval growth was monitored during 10 days. The results indicate that the water quality was best in the Bay of Arcachon, followed by Mimizan, whereas the water off Capbreton was possibly contaminated by pollutants.
Tipo: Text
Palavras-chave: Croissance; Qualité de l'eau; Développement larval; Pollution; Mytilus edulis; Growth; Water quality control; Larval development; Pollution; Mytilus edulis.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00038/14903/12229.pdf

Forty questions of importance to the policy and practice of native oyster reef restoration in Europe
Provedor de dados: 5
Autores: Zu Ermgassen, Philine S. E.; Bonačić, Kruno; Boudry, Pierre; Bromley, Cass A.; Cameron, Tom C.; Colsoul, Bérenger; Coolen, Joop W. P.; Frankić, Anamarija; Hancock, Boze; Have, Tom M.; Holbrook, Zoë; Kamermans, Pauline; Laugen, Ane T.; Nevejan, Nancy; Pogoda, Bernadette; Pouvreau, Stephane; Preston, Joanne; Ranger, Christopher J.; Sanderson, William G.; Sas, Hein; Strand, Åsa; Sutherland, William J.
Oyster reefs are among the most threatened marine habitats globally. In Europe, oyster reefs have been extirpated from most locations within their historical range. Active restoration of the native oyster (Ostrea edulis) in Europe has grown substantially in recent years. In sharing experiences between oyster restoration projects in Europe at the Native Oyster Restoration Alliance conference, NORA2, in Edinburgh in May 2019, it became apparent that a number of similar barriers are experienced. This study identified the top 40 questions, which, if answered, would have the greatest influence on the policy and practice of oyster restoration in Europe. Initially 71 people were consulted across 28 institutions and 11 European countries to generate 194 questions....
Tipo: Text
Palavras-chave: Alien species; Estuary; Fishing; Invertebrates; Pollution; Restoration; Subtidal.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00658/77004/78261.pdf

Choix de produits pour lutter contre la pollution du milieu marin par les hydrocarbures. IV. Toxicite relative de sept produits emulsionnants antipetrole.
Provedor de dados: 5
Autores: Maggi, Pierre.
Toxicity of seven emulsifying agents for treating oil spills (ISTPM designation E sub(22), E sub(30), E sub(41), E sub(46), E sub(47), E sub(52) and E sub(53)) was determined using eight marine species (three gastropods, one bivalve, two crustacean and one fish). Results are tabulated as LD sub(50). E sub(47) was least toxic to the species studied, but it could still perhaps harm other plant and animal species.
Tipo: Text
Palavras-chave: Treatment; Pollution; Oil spills; Toxicity.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2074.pdf

Choix de produits pour lutter contre la pollution du milieu marin par les hydrocarbures. I. Motif du choix.
Provedor de dados: 5
Autores: Soudan, France.
Following the Torrey Canyon disaster, attention was directed to finding effective but innocuous means to combat the pollution risk of shipping oil. To introduce the minimum of chemicals into the sea, it was decided to use a little of a strong, but possibly more harmful, substance rather than more of a weaker and less offensive one. Marine life could be affected mechanically, chemically or by removal or dissolved O sub(2). Various products were tested under laboratory conditions for effectiveness, and possible effects on marine life. It is noted that the latter is only a short-term view, and that different results might be obtained using different species as indicators. The range of effectiveness of products was considered. It was concluded that low density...
Tipo: Text
Palavras-chave: Results; Torrey Canyon; Choice; Oil spills; Pollution.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2071.pdf

Detection of early effects of a single herbicide (diuron) and a mix of herbicides and pharmaceuticals (diuron, isoproturon, ibuprofen) on immunological parameters of Pacific oyster (Crassostrea gigas) spat
Provedor de dados: 5
Autores: Luna-acosta, Andrea; Renault, Tristan; Thomas-guyon, Helene; Faury, Nicole; Saulnier, Denis; Budzinski, Helene; Le Menach, K.; Pardon, P.; Fruitier-arnaudin, I.; Bustamante, Paco.
In the context of massive summer mortality events of the Pacific oyster Crassostrea gigas, the aim of this study was to investigate the early effects on genes, enzymes and haemocyte parameters implicated in immune defence mechanisms in C. gigas oysters exposed to a potentially hostile environment, i.e. to an herbicide alone or within a mixture. Following 2 h of exposure to the herbicide diuron at 1 mu g L-1 the repression of different genes implicated in immune defence mechanisms in the haemocytes and the inhibition of enzyme activities, such as laccase-type phenoloxidase (PO) in the plasma, were observed. The inhibition of superoxide dismutase (SOD) activity in the plasma was also observed after 6 and 24 h of exposure. In the mixture with the herbicides...
Tipo: Text
Palavras-chave: Bivalve; Pollution; Gene expression; Laccase; Superoxide dismutase; Phagocytosis.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00083/19435/17475.pdf

A multibiomarker approach on the Atlantic tomcod (Microgadus tomcod) in the St. Lawrence Estuary
Provedor de dados: 5
Autores: Dupuy, Celie; Couillard, Catherine M.; Laroche, Jean; Nellis, Pierre; Brousseau, Pauline; Fournier, Michel.
A multibiomarker approach was developed on juvenile Atlantic tomcod (Microgadus tomcod) to evaluate the pertinence of this approach for low-cost screening assessment of the environmental quality of various coastal sites within estuaries. Several biometric indices and biomarkers (ethoxyresorufin-O-deethylase (EROD) activity, metallothionein concentration, and immune responses) were investigated on immature and maturing tomcods (a parts per thousand currency sign31 months) collected in four environmentally contrasted sites in the St. Lawrence Estuary (SLE). Simultaneous examination of various age classes provides the opportunity to detect short-term responses in sensitive young-of-the-year fish (e.g., EROD induction) and longer-time effects associated with...
Tipo: Text
Palavras-chave: Biometric indexes; EROD; Metallothionein; Immunotoxicity; Pollution; Fish.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00125/23578/21501.pdf

How would the loss of production due to an herbicide have repercussions in the food web of an intertidal mudflat? Sensitivity analysis of an inverse model for Brouage mudflat, Marennes-Oleron Bay, France
Provedor de dados: 5
Autores: Niquil, Nathalie; Kerleguer, G; Leguerrier, D; Richard, Pierre; Legrand, Helene; Dupuy, Christine; Pascal, P; Bacher, Cedric.
The presence of herbicides in the run-off water coming over Brouage mudflat (Marennes-Oleron Bay, France) is suspected to cause a loss of primary production by benthic diatom biofilm. Microphytobenthos being the main primary producer of this ecosystem, it was questioned about what could be the effect of such a modification of primary production on the entire food web that depends on it. The probable impacts were investigated through a sensitivity analysis conducted on the steady-state model of the Brouage mudflat, coupling two seasons and trophic-hydrodynamic flows. The loss of benthic primary production had an effect on compartments at a low trophic level, but was buffered at higher levels because of the compensation of herbivory by other pathways and...
Tipo: Text
Palavras-chave: Intertidal mudflat food web; Pollution; Microphytobenthos; Inverse analysis; Sensitivity analysis.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3613.pdf

Preliminary results from POLMAR III (April 13-18, 1978) (SUROIT III) ATP, primary production and respiration rates in zooplankton. Complément à la Communication du Groupe Ecophysiologie du Centre Océanologique de Bretagne (SAMAIN et al.)
Provedor de dados: 5
Autores: Hendrikson, P.; Hirche, H.j.; Junghans,, U.
ATP, primary production and respiration rates in seston, respiration rates in zooplankton have been investigated after the spill by "AMOCO CADIZ". Gross primary production seems to be similar to the normal situation. The rate of photosynthesis is lower at the "AMOCO CADIZ" station than at any of the others. Respiration rates are surprisingly high at the surface. ATP concentra­tion exhibit an homogeneous pattern, zooplankton respiration are similar to the data obtained in Peruvian upwelled waters or in zooplankton culture. A more detailed computation of data will be necessary before concluding.
Tipo: Text
Palavras-chave: Plancton; Taux respiratoires; ATP; Production primaire; Pollution; AMOCO CADIZ; Plankton; Respiration rates; ATP; Primary production; Pollution; AMOCO CADIZ.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41729/40940.pdf

Long-term changes in the Zostera bed area in the Seto Inland Sea (Japan), especially along the coast of the Okayama Prefecture
Provedor de dados: 5
Autores: Komatsu, T.
The Seto Inland Sea is the largest enclosed sea in Japan (22,000 km(2) surface area), and is very shallow (average depth of 37 m). Large Zostera marina L. beds throughout the Sea play an important role in its ecosystems and environments. This study reviews the long-term changes in the area of the Zostera beds, as well as some direct and indirect environmental factors which influence their distribution. In 1924, the area of the beds was 4,137 ha in the waters of the Okayama Prefecture, By 1989, 87 % of these beds had been lost. Industrialization and urbanization around the coasts of the Seto Inland Sea began in the 1950s. In the 1960s, the area of the Zostera beds in this Sea amounted to 22,625 ha. Since 1977, 70 % of these beds has been lost. This decline...
Tipo: Text
Palavras-chave: Zostera bed; Long-term change; Pollution; Reclamation; Transparency.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20391/18058.pdf

Le chrome en milieu marin
Provedor de dados: 5
Autores: Chiffoleau, Jean-francois.
This document constitutes a synthesis of current knowledge on the chromium biogeochemical cycle. The natural and anthropogenic sources are evaluated, the fluxes between the various geochemical compartments are assessed, with special attention to the riverine and atmospheric inputs to the marine environment. Chromium levels in these compartments are described and show in several areas a very high contamination of marine organisms. Due to the important toxicity of this element, further investigations are absolutely required to better understand its behaviour in the marine environment.
Tipo: Text
Palavras-chave: Economic analysis; Air water exchanges; Toxicity; Biogeochemical cycle; Marine environment; Pollution; Chromium.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/1994/rapport-1430.pdf

Coprostanol levels and organic enrichment in sediments of the Bilbao estuary (north of Spain)
Provedor de dados: 5
Autores: Saiz-salinas, Ji; Gonzalez-oreja, Ja.
An assessment was made of the distribution of the faecal sterol coprostanol (COP) in sediments in the Bilbao estuary. Concentrations of COP ranged from 135.15 to 10.77 mu g g(-1) dry weight, from the inner to the open estuary, with a mean value of 51.43 mu g g(-1); the highest concentrations were found near the mouths of several tributaries flowing into the estuary. Comparisons with ether published values indicate that sediments from the Bilbao estuary are affected by sewage pollution in a similar degree to that reported for other estuaries in the world. Organic enrichment and anaerobic sediment conditions prevail in three-fourths of its watercourse bed. Since the spatial distribution of several organic sedimentary parameters could be clearly correlated...
Tipo: Text
Palavras-chave: Estuaire de Bilbao; Coprostanol; Sédiment; Enrichissement organique; Pollution; Bilbao estuary; Coprostanol; Sediment; Organic enrichment; Sewage pollution.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00326/43689/43120.pdf

Facteurs de mortalité observés chez les tortues marines dans le golfe de Gascogne
Provedor de dados: 5
Autores: Duguy, R; Moriniere, P; Le Milinaire, C.
Factors of mortality in marine turtles near the French coast of the Bay of Biscay have been recorded for four species: leatherback (Dermochelys coriacea), loggerhead (Caretta caretta), Ridley's turtle (Lepidochelys kempii) and green turtle (Chelonia mydas). Most accidental captures of D. coriacea by fishing gears lead to drowning, but the main threat for the species is the ingestion of floating waste. Plastic bags induce occlusion or lesions in the stomach and subsequent death. For C. caretta, L. kempii and C. mydas, the pathology points out mainly two features: external or internal mycosis.
Tipo: Text
Palavras-chave: Chélonien; Tortue marine; Pathologie; Pollution; Golfe de Gascogne; Chelonian; Marine turtle; Pathology; Pollution; Bay of Biscay.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00326/43693/43236.pdf

Deuxième colloque Biotechnologie Marines : La Tremblade, 28-30 mai 1991
Provedor de dados: 5
Autores: IFREMER, Institut Français de Recherche pour l'Exploitation de la mer; ADEBIO, Association pour le Développement de la Bio-Industrie.
Ce document est une compilation des présentations effectuées lors du deuxième Colloque de Biotechnologies Marines qui a eu lieu à Ronce les Bains du 28 au 30 mai 1991.
Tipo: Text
Palavras-chave: Biotechnologie; Microalgue; Cyanobactérie; Macroalgue; Bactérie hydrothermale; Chimie; Biochimie; Valorisation produits mer; Génétique; Pollution; Biocapteur; Microorganisme.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00210/32125/30582.pdf

Anthropogenic pressure on the open ocean: The growth of ship traffic revealed by altimeter data analysis
Provedor de dados: 5
Autores: Tournadre, Jean.
Marine ecosystems are under increasing anthropogenic pressures from marine and terrestrial activities. Ship traffic, the major cause of change in the open ocean, and its temporal evolution are still largely unknown because of lack of data. Altimeter data provide a new powerful tool to detect and monitor the ship traffic through a method of analysis of echo waveform. The archive of seven altimeter missions has been processed to create a two decade database of ship locations. The estimated annual density maps compare well with the ones obtained from Automatic Identification System. The ship traffic analysis shows a global fourfold growth between 1992 and 2012, the largest increase being observed in the Indian Ocean and the Chinese seas reflecting the world...
Tipo: Text
Palavras-chave: Altimetry; Ship traffic; Pollution; Anthropogenic pressure.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00229/34039/32432.pdf

Report of the study group on pollution affecting shellfish in aquaculture and natural populations - 1991
Provedor de dados: 5
Autores: Heral, Maurice; Meixner, R.; Spencer, B.; Walsh, G.; Worms, J.
This document is a report of a Study Group of the International Council for the Exploration of the Sea and does not necessarily represent the views of the Council. Therefore it should not he quoted without consultation with the General Secretary.
Tipo: Text
Palavras-chave: Natural populations; Aquaculture; Shellfish; Pollution; Populations naturelles; Aquaculture; Coquillages; Pollution.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-3048.pdf

A two-dimensional particle tracking model for pollution dispersion in A Coruna and Vigo Rias (NW Spain)
Provedor de dados: 5
Autores: Gomez-gesteira, M; Montero, P; Prego, R; Taboada, Jj; Leitao, P; Ruiz-villarreal, M; Neves, R; Perez-villar, V.
A two-dimensional hydrodynamic model coupled to a particle tracking model is applied to study the dispersion processes and residence time in two Galician rias (A Coruna and Vigo, NW Spain) under summer conditions. In A Coruna a long residence time was found in the harbour area due to the existence of a dock, and a short one in the river area. On the contrary, in Vigo, the residence time is smaller in the harbour area, due to the Rande Strait, beyond which the river effect is negligible.
Tipo: Text
Palavras-chave: Modèle bidimensionnel; Traceur passif; Circulation résiduelle; Pollution; Rias de Galice; Two-dimensional model; Passive tracers; Residual currents; Pollution; Galician rias.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43618/43312.pdf

Rapport annuel d'activité 1981 Service des contrôles sanitaires et techniques de La Tremblade
Provedor de dados: 5
Autores: Coeurdacier, Jean-luc.
Rapport annuel du Service des Contrôles Sanitaires et Techniques de La Tremblade concernant l'année 1981
Tipo: Text
Palavras-chave: Conchyliculture; Contrôle sanitaire; Casier sanitaire; Bactériologie; Pollution; Assainissement; Importation; Exportation; Crassostrea gigas; Marennes Oléron.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00070/18120/15668.pdf

Incidences de l'Amoco Cadiz sur les exploitations ostréicoles
Provedor de dados: 5
Autores: Grizel, Henri; Michel, Pierre; Abarnou, Alain; Guegan, B.
Oyster contamination present on Oyster-beds in Abers-Morlaix bay when stranding arrives, decontamination of this oysters in others clean rivers an clean oyster stocks in oyster-beds, submersible and insubmersible thanks in pollute rivers are described. Pratical implication of this result in given.
Tipo: Text
Palavras-chave: Amoco Cadiz; Croissance; Mortalités; Décontamination; Marée noire; Contamination; Pollution; Huîtres.
Ano: 1979
URL: http://archimer.ifremer.fr/doc/1979/acte-6247.PDF

Effet du pétrole de l'"Amoco Cadiz" sur les oiseaux de mer. Bilan provisoire
Provedor de dados: 5
Autores: Monnat, J.y.
Immediatly following the AMOCO CADIZ oil spill, the S.E.P.N.B. carried out health centers for oiled birds from Finistère, and estimated the impact of the oil spill on seabirds. In the whole, 15 to 20 000 birds are dead because of the AMOCO CADIZ oil spill. 41 species have been oiled, among which 35 usually live in marine environment. The species most stressed belong to alcidae. The mortality rate (0,1 bird/ton of oil) seems to be, at. present day, the lowest rate never mentionned in the litterature.
Tipo: Text
Palavras-chave: Pollution; Hydrocarbures; AMOCO CADIZ; Oiseaux; Nord-Finistère; Côtes-du- Nord; Pollution; Hydrocarbons; AMOCO CADIZ; Birds; Northen Brittany.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00306/41723/40934.pdf

Qualité des eaux de baignade. Sous-région marine Méditerranée occidentale. Evaluation initiale DCSMM.
Provedor de dados: 5
Autores: Blanck, Aurélie.
Tipo: Text
Palavras-chave: Méditerranée; Eaux de baignade; Réglementation; Qualité; Pollution; Evolution.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00331/44242/43811.pdf

Bioenergetic transcriptomic responses of European flounder (Platichthys flesus) populations in contrasted environments: impacts of pollution and global warming
Provedor de dados: 5
Autores: Borcier, Elodie; Charrier, G.; Amerand, A.; Theron, M.; Loizeau, Veronique; Pedron, Nicolas; Laroche, J.
Tipo: Text
Palavras-chave: European flounder; Platichthys flesus; Pollution; Global warming.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00376/48688/49019.pdf

Qualité des eaux de baignade. Sous-région marine Mers celtiques. Evaluation initiale DCSMM.
Provedor de dados: 5
Autores: Blanck, Aurélie.
Tipo: Text
Palavras-chave: Mers celtiques; Eaux de baignade; Réglementation; Qualité; Pollution.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00329/43976/43548.pdf

A comparative study of marine litter on the seafloor of coastal areas in the Eastern Mediterranean and Black Seas
Provedor de dados: 5
Autores: Ioakeimidis, C.; Zeri, C.; Kaberi, H.; Galatchi, M.; Antoniadis, K.; Streftaris, N.; Galgani, Francois; Papathanassiou, E.; Papatheodorou, G.
In the present work, abundance, spatial distribution and qualitative composition, of benthic marine litter, were investigated in five study areas from the Eastern Mediterranean and Black Seas (Saronikos, Patras and Echinades Gulfs; Limassol Gulf; Constanta Bay). Surveys were performed using the monitoring protocol proposed by the Technical Group for Marine Litter. Densities ranged from 24 items/km(2) to 1211 items/km(2), with the Saronikos Gulf being the most affected area. Plastics were predominant in all study areas ranging from 45.2% to 95%. Metals and Glass/Ceramics reached maximum values of 21.9% and of 22.4%. The size distribution of litter items showed that &gt;= 50% fall into medium size categories (10 x 10 cm, 20 x 20 cm) along with an elevated...
Tipo: Text
Palavras-chave: Litter; Benthic; Pollution; Eastern Mediterranean; Black Sea.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00251/36179/34730.pdf

Qualité des eaux de baignade. Sous-région marine Manche - Mer du Nord. Evaluation initiale DCSMM.
Provedor de dados: 5
Autores: Blanck, Aurélie.
Tipo: Text
Palavras-chave: Manche; Mer du Nord; Eaux de baignade; Réglementation; Qualité; Pollution; Evolution.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00328/43872/43446.pdf

Air Pollution and Sea Pollution Seen from Space
Provedor de dados: 5
Autores: Viatte, Camille; Clerbaux, Cathy; Maes, Christophe; Daniel, Pierre; Garello, René; Safieddine, Sarah; Ardhuin, Fabrice.
Air pollution and sea pollution are both impacting human health and all the natural environments on Earth. These complex interactions in the biosphere are becoming better known and understood. Major progress has been made in recent past years for understanding their societal and environmental impacts, thanks to remote sensors placed aboard satellites. This paper describes the state of the art of what is known about air pollution and focuses on specific aspects of marine pollution, which all benefit from the improved knowledge of the small-scale eddy field in the oceans. Examples of recent findings are shown, based on the global observing system (both remote and in situ) with standardized protocols for monitoring emerging environmental threats at the global...
Tipo: Text
Palavras-chave: Pollution; Atmosphere; Ocean; Space-borne instrument.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00635/74687/74596.pdf

Lagune de Salses-Leucate. II.- Contamination bactériologique et approche physico-chimique
Provedor de dados: 5
Autores: Ladagnous, Helene; Le Bec, Claude.
En complément de l'analyse bibliographique (vol. 1), une étude de la contamination bactériologique et une approche de la qualité physico-chimique des eaux de la lagune ont été menées. Réalisées aux mois de mai et juin 1996, ces études ont pour objectif d'aborder de façon prospective, la totalité de l'étang. Des secteurs contaminés bactériologiquement ont pu être mis en évidence dans la partie sud de la lagune, sans que les sources soient clairement localisées. De même, pour la partie nord, les taches de contamination mises en évidence lors de précédentes études sont confirmées dans la zone des parcs conchylicoles. Les analyses de sels nutritifs montrent l'importance des résurgences karstiques dans les apports de nutriments, sans que le facteur limitant de...
Tipo: Text
Palavras-chave: Lagune; Méditerranée; Leucate; Salses; Physico-chimie; Biogéochimie; Pollution; Bactériologie; Résurgence; Karst.; Lagoon; Mediterranean; Leucate; Salses; Physico-chemistry; Biogeochemistry; Pollution; Bacteriology; Resurgence-spring; Karst.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00073/18423/15966.pdf

Impact de la pollution aux hydrocarbures sur l'écophysiologie et la pathologie des bivalves d'intérêt commercial de la Côte Atlantique
Provedor de dados: 5
Autores: Martin, Jean-louis; Haure, Joel; Thebault, Anne; Goulletquer, Philippe.
The evaluation of the ecological and economical consequences of the hydrocarbon pollution of the Erika implies the setting up of monitorings, analysis and experiments in the short, medium and long term. Among the consequences to be evaluated, a great deal of attention has to be paid to the direct impact on the biology and production performances of the main shellfish species as about 30% of the national production (around 130,000 tons of oysters and 60,000 tons of mussels per year) is cultivated in the impacted area. The main difficulty in evaluating the effects of the contaminants on a distinct part of the ecosystem which is mostly dominated by a cultured population dwells in the different approaches to set up as well as the variability of the answers...
Tipo: Text
Palavras-chave: Pathologie; Ecophysiologie; Conchyliculture; Impact; Hydrocarbures; Pollution.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-3308.pdf

Qualité des eaux de baignade. Sous-région marine Golfe de Gascogne. Evaluation initiale DCSMM.
Provedor de dados: 5
Autores: Blanck, Aurélie.
Tipo: Text
Palavras-chave: Golfe de Gascogne; Eaux de baignade; Réglementation; Qualité; Pollution; Evolution.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00329/44059/43630.pdf

Etude de la qualité bactériologique des marais du MES (Loire-Atlantique) de 1990 à 1994
Provedor de dados: 5
Autores: Catherine, Martial; Dumont, Francoise; Pezeron, Annie; Menanteau, Chantal.
Une partie importante des marais salants du Mes produit du sel à Saint-Molf et Assérac. Les marais bordant les traicts de Pen Bé et Mesquer ont été transformés en claires pour l'affinage des huîtres. Des paludiers ont recherché un complément à leur activité salicole dans l'élevage de la palourde. Par ailleurs, plusieurs entreprises ont créé un élevage de palourdes dans les marais, et sur l'estran. Les marais sont des milieux fragiles très sensibles aux diverses pollutions, notamment bactériennes, qui ont été mises en évidence par la DDASS, et par différentes études. Elles sont essentiellement d'origines urbaine et domestique, et proviennent des rejets ponctuels et permanents d'eaux usées dans les réseaux pluviaux, les fossés et les ruisseaux, qui...
Tipo: Text
Palavras-chave: Bassin versant; Marais salants; Étiers; Claires; Palourdes; Assainissement; Pollution; Coliformes fécaux; Salmonelles; Pluviométrie; Marée.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00065/17664/15194.pdf

Industries. Sous-région marine Golfe de Gascogne. Evaluation initiale DCSMM.
Provedor de dados: 5
Autores: Agence des aires marines protégées.
Tipo: Text
Palavras-chave: Golfe de Gascogne; Activité industrielle; Réglementation environnementale; Interaction; Pollution.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00330/44086/43657.pdf

Industries. Sous-région marine Manche - Mer du Nord. Evaluation initiale DCSMM.
Provedor de dados: 5
Autores: Agence des aires marines protégées.
Tipo: Text
Palavras-chave: Manche; Mer du Nord; Activité industrielle; Réglementation environnementale; Interaction; Pollution.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00328/43900/43473.pdf

Structure of the artificial hard substrate assemblages in ports in Thermaikos Gulf (North Aegean Sea)
Provedor de dados: 5
Autores: Karalis, P; Antoniadou, C; Chintiroglou, C.
The present study describes the hard substrate assemblages established on the concrete blocks of three ports placed in gradually longer distances from the main source of pollution in Thermaikos Gulf. The samplings were performed on a seasonal basis for a 2-year period. The data analysis indicates a clear separation of the assemblages from each port. Evenness and Shannon-Weaver diversity indices were calculated and their values were found to be quite high. This fact, combined with the seasonal pattern that these assemblages hold, reveals stability and a good adaptation of their faunistic components to local environmental conditions. A change due to the construction of a new block functioning as a surge barrier was detectable at the station of N. Michaniona....
Tipo: Text
Palavras-chave: Substrats durs; Ports; Pollution; Polychètes; Relations trophiques; Hard substrate; Ports; Pollution; Polychaeta; Trophic relations.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00321/43267/42998.pdf

Quelques observations sur la condition des huîtres portugaises (Crassostrea angulata LmK), dans le bassin d'Arcachon, les ruissellements des eaux qui draînent l'arrière-pays, la présence de sels de fer et un phénomène de coloration
Provedor de dados: 5
Autores: Le Dantec, Jean.
Nous avons précédemment montré que des diminutions du rendement ostréicole pouvaient être consécutives à des périodes de sécheresse, que les ruissellements dans la baie n'étaient massifs que de novembre à mai inclus par suite des variations du niveau de la nappe phréatique; que les fortes pluies de l'hiver 1960-61 avaient eu pour conséquences d'importants apports d'alluvions et la réapparition sur les terrains ostréicoles d'une couche de vase superficielle appelée localement « barotte », où pullulait une flore benthique très riche, et une revigoration momentanée de l'huître portugaise. Ces constatations nous ont incité à comparer au cours des années dernières l'évolution des chutes météoriques pendant la période novembre-mai et les fluctuations de la...
Tipo: Text
Palavras-chave: Crassostrea angulata; Sel de fer; Mortalité; Pollution; Impact.
Ano: 1966
URL: http://archimer.ifremer.fr/doc/00039/15068/12402.pdf

Genotoxicity and activation of cellular defenses in transplanted zebra mussels Dreissena polymorpha along the Seine river
Provedor de dados: 5
Autores: Chatel, Annelle; Faucet-marquis, Virginie; Gourlay-france, Catherine; Pfohl-leszkowicz, Annie; Hubert, Francoise.
The aim of the present study was to confirm the relevance of studying DNA adduct formation in a field study. In that context, freshwater mussels Dreissena polymorpha, collected in a reference station, were transplanted in different sites with a pollution gradient. After one and two months, mussels were collected and DNA adduct formation was analyzed using the 32P post labelling technique on both gills and digestive glands. In addition, the expression of genes involved in the detoxification system (catalase (CAT), superoxide dismutase (SOD), glutathione S-transferase (GST), HSP70, aryl hydrocarbon receptor (AHR), P glycoprotein (PgP), metallothionein (MT)) was assessed by RT-PCR. DNA adducts were observed at amount comparable to data from literature....
Tipo: Text
Palavras-chave: Biomarker; Pollution; DNA adducts; Detoxification; Dreissena polymorpha; RT-PCR.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00195/30639/32450.pdf

Histopathological lesions and DNA adducts in the liver of European flounder (Platichthys flesus) collected in the Seine estuary versus two reference estuarine systems on the French Atlantic coast
Provedor de dados: 5
Autores: Cachot, Jerome; Cherel, Yan; Larcher, Thibaut; Pfohl-leszkowicz, Annie; Laroche, Jean; Quiniou, Louis; Morin, Jocelyne; Schmitz, Julien; Burgeot, Thierry; Pottier, Didier.
An epidemiological survey was conducted in the Seine estuary and in two smaller and relatively preserved estuaries on the French Atlantic coast in order to estimate the occurrence of liver lesions in European flounder, Platichthys flesus, and also to seek putative risk factors for the recorded pathologies. Four hundred and seventy-eight fish of both sexes and of different size ranges were sampled in the three studied areas, 338 of which in the Seine estuary. All fish were examined for histopathological liver lesions, while DNA adducts and otoliths were analyzed on a subsample. Five categories of hepatic lesions were recorded with the following prevalence for the Seine estuary: 36.7 % inflammations, 8 % parasites (mainly encysted nematodes), 6.5 % foci of...
Tipo: Text
Palavras-chave: Epidemiological study; European flounder; Seine estuary; Liver histopathology; Necrosis; FCA; Tumors; Inflammations; Parasites; DNA adducts; Pollution.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00125/23576/21498.pdf

Report of the study group on pollution affecting shellfish in aquaculture and natural populations - 1992
Provedor de dados: 5
Autores: Heral, Maurice.
In La Rochelle (october 1991) the following recommendations of consultative committee approved by the delegates meeting for this study group were :  Attention was drawn to the fact that the study group on Pollution Meeting Shellfish in Aquaculture and Natural Populations (C.Res. 1991/2 : 45) was one of the council's first attempts to investigate the effect of pollution on fisheries. Delegates were encouraged to ensure a better representation of proper experts at the 1992 meeting since the 1991 meeting had been poorly attended. The recommendations from the Shellfish Committee were adopted by the council as C.Res. 1992/2 : 45 jointly with MEQC, Mariculture and ACMP.
Tipo: Text
Palavras-chave: Pollution; Shellfish Committee; Recommendation.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-3063.pdf

Fairly processing rare and common species in multivariate analysis of ecological series - Application to macrobenthic communities from Algiers harbour
Provedor de dados: 5
Autores: Mante, Claude; Claudet, Joachim; Rebzani Zahaf, C.
Systematic sampling of communities gives rise to large contingency tables summing up possible changes in the assemblages' structure. Such tables are generally analysed by multivariate statistical methods, which are ill-suited for simultaneously analysing rare and common species (Field et al., 1982). In order to separately process species belonging to either of these categories, we propose a statistical method to select common species in a sequence of ecological surveys. It is based on a precise definition of rarity, and depends on a rarity parameter.   In this work, this parameter will be optimised so that the sub-table of common species captures the essential features of the complete table as well as possible. In this way we analysed the spatio-temporal...
Tipo: Text
Palavras-chave: Hellinger distance; Pollution; Algiers harbour; Multivariate analyses; Macrobenthic communities; Selection; Rare species.
Ano: 2003
URL: https://archimer.ifremer.fr/doc/2003/publication-754.pdf

Critères de pollution par hydrocarbures dans les sédiments marins. Étude appliquée à la pollution du "Bohlen"
Provedor de dados: 5
Autores: Marchand, Michel; Roucache, J.
In October 16, 1976, the tanker "Bohlen" was wrecked in the Mer d'Iroise, at about 35 miles of Brest, and lossed about 7 000 t of Boscan crude oil. The coast of Brittany was polluted by 3 000 t, and 4000 t were dispersed in the marine environment. In July 1977, 23 surface sediment samples were collected to look for the traces of oil spill in the sea bottom, 9 months after the shipwreck. Only one sediment was very iittle polluted by the Boscan crude oil. Elsewhere, two other kinds of oil pollution were observed in sorne sediment samples. Severa! quantitative and qualitative criteria were used to research sorne oil pollution in the marine sediments and to know the origin: hydrocarbon concentrations, ratios total organic extra ct 1 organic carbon,...
Tipo: Text
Palavras-chave: Pollution; Hydrocarbures; Sédiments; « Bohlen »; Pollution; Hydrocarbons; Sediments; "Bohlen".
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00121/23206/21051.pdf

Impact de l'Erika sur la pathologie de bivalves d'intérêt commercial: résultats préliminaires
Provedor de dados: 5
Autores: Thebault, Anne; Robert, Maeva; Renault, Tristan; Dumais, M.; Goulletquer, Philippe.
Après le naufrage de l'Erika, la question s'est rapidement posée de l'impact des hydrocarbures sur la santé des coquillages, car la pollution concernait des zones de production conchylicoles. Le suivi zoosanitaire en place dans ces zones permettait d'avoir des données de référence avant impact. Il a été choisi différents sites exposés de référence, qui ont fait l'objet d'analyse en toxicologie et en pathologie. A la différence du cas de l'Arnoco Cadiz, l'effort n'a pas été mis uniquement sur les huîtres mais aussi sur d'autres espèces de coquillages, comme les moules et des fouisseurs, particulièrement exposés comme les coques et les palourdes. La mesure de l'exposition effectuée par la Direction de l'Environnement Littoral (MONERlKA) montre qu'une...
Tipo: Text
Palavras-chave: Pollution; Pathologie; Hydrocarbures; Coquillages; HAP; Histologie; Finistère; Vendée.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00087/19826/17468.pdf

Spatial variations in biomarkers of Mytilus edulis mussels at four polluted regions spanning the Northern Hemisphere
Provedor de dados: 5
Autores: Gagne, F; Burgeot, Thierry; Hellou, J; St Jean, S; Farcy, E; Blaise, C.
Economic and social developments have taken place at the expense of the health of the environment, both locally and on a global scale. In an attempt to better understand the large-scale effects of pollution and other stressors like climate change on the health status of Mytilus edulis, mussels were collected during the first two weeks of June 2005 at three sites (one pristine and two affected by pollution) located in each of the regions of the Canadian West Coast, the St. Lawrence estuary, the Atlantic East Coast and the northwestern coast of France, covering a total distance of some I 1000 km. The mussels were analyzed for morphologic integrity (condition factor), gametogenic activity (gonado-somatic and gonad maturation index, vitellogenin(Vtg)-like...
Tipo: Text
Palavras-chave: Health status; Mytilus edulis; Global changes; Pollution; Biomarkers.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4342.pdf

Choix de products pour lutter contre la pollution du milieu marin par les hydrocarbures. III. Toxicite relative de produits a antipetrole sur deux organisme marins.
Provedor de dados: 5
Autores: Alzieu, Claude.
The necessity to combat oil slicks makes it necessary to assess the relative effectiveness and toxicity of dispersal agents used. This is usually done by using individual or groups of indicator organisms. The theory behind the various approaches is outlined, and some considerations are listed for the choice of technique. 2 organisms were chosen - the Portuguese oyster (Crassostrea), and the phytoplankton alga Phaeodactylum tricornutum Bohlin, on which if feeds - and the oyster closing reaction, and level of inhibition of growth under the influence of irritant products was measured. Methods are described, and the results shown for emulsifying, agglomerating and precipitating products. The results are discussed, and the mode of interference of the products...
Tipo: Text
Palavras-chave: Choice of technique; Phytoplankton; Organisms; Toxicity; Oil spills; Pollution.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2073.pdf

Etude de la pollution en chrome de la Charente
Provedor de dados: 5
Autores: Masson, Daniel; Papon, Denis.
Le bassin de la Charente avec ses quelques 10 000 km2 et 600 000 habitants est l'objet d'importants prélèvements d'eau.  En effet, outre les besoins propres aux activités industrielles et agricoles et à la population, le fleuve doit assurer l'approvisionnement en eau de la zone littorale qui constitue à la fois un important centre touristique et conchylicole.  Aussi, la résorption des sources de pollution est une action prioritaire.  Une démarche engagée en 1978 sur le bassin charentais et actuellement poursuivie, consiste à définir des objectifs de qualité des eaux superficielles.  Le document édité en décembre 1992 par l'Agence de l'eau Adour-Garonne a mis en évidence "une contamination d'origine industrielle par les métaux dans l'eau et les mousses...
Tipo: Text
Palavras-chave: Pollution; Chrome; Toxicité; Sources pollution; Prévention; Eaux superficielles; Sédiment; Charente; Département Charente-Maritime.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00118/22969/20795.pdf

Observations des microplastiques sur les cotes francaises de mediterranee occidentale
Provedor de dados: 5
Autores: Henry, Maryvonne; Galgani, Francois.
Une campagne de prélèvements de microplastiques en surface a été opérée dans les masses d'eau littorales méditerranéennes françaises, de la frontière espagnole à la frontière italienne et sur le pourtour de la Corse. Les microplastiques sont présents dans tous les échantillons récoltés, avec des concentrations variant de 20 à 5 656 particules à l'hectare
Tipo: Text
Palavras-chave: Plastics; Pollution; Surface waters; North-Western Mediterranean.
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00642/75436/76365.pdf

Active biomonitoring in Greek coastal waters: Application of the integrated biomarker response index in relation to contaminant levels in caged mussels
Provedor de dados: 5
Autores: Tsangaris, Catherine; Hatzianestis, Ioannis; Catsiki, Vassiliki-angelique; Kormas, Konstantinos Ar; Strogyloudi, Evangelia; Neofitou, Christos; Andral, Bruno; Galgani, Francois.
An integrated approach using biomarkers and contaminant levels in mussels Mytilus galloprovincialis L was employed to assess chemical contamination in Greek coastal waters within the framework of the MYTIMED program. Biomarkers (metallothioneins, glutathione S-transferase, catalase, acetylcholinesterase and RNA:DNA ratio) have been previously described in mussels caged at 14 sites in coastal areas influenced by different types of anthropogenic activities. This study applied a biomarker index, the Integrated Biomarker Response (IBR) to summarize biomarker responses and relate stress levels to concentrations of organochlorine compounds (PCBs, DDTs), polycyclic aromatic hydrocarbons (PAHs), and metals (Cu, Ni, Fe, Zn) measured in the mussel tissues. The IBR...
Tipo: Text
Palavras-chave: Pollution; Biomarkers; Monitoring; Mussel caging; Mytilus galloprovincialis; Mediterranean Sea.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00059/17033/14718.pdf

Etude de salubrite du gisement naturel de coques (Cerastoderma edule) de la plage Benoit en Baie du Pouliguen-Loire-Atlantique (1989-1990)
Provedor de dados: 5
Autores: Catherine, Martial; Beliaeff, Benoit; Pezeron, Annie.
Le gisement naturel de coques de la plage Benoît, situé en baie du Pouliguen, a été classé en zone insalubre en juin 1988. Depuis des travaux ont été réalisés sur le réseau d'assainissement. Cette étude est destinée à montrer l'état de salubrité bactériologique de cette zone. La plage Benoît reçoit des eaux polluées par l'intermédiaire de l'étier du Pouliguen. les principales causes de contamination fécale sont : - les eaux usées domestiques des hameaux non raccordés, - le dysfonctionnement du couple réseau d'assainissement/station d'épuration en période estivale. Le traitement des données bactériologiques recueillies au cours de la période juillet 89/juillet 90 prend en compte l'influence des paramètres hydroclimatiques sur la distribution de la...
Tipo: Text
Palavras-chave: Plage Benoit; Coques; Classement; Pollution; Coliformes fécaux; Courantologie; Météorologie; Arrêté; Avis.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00132/24278/22276.pdf

Etude sur les contaminants émergents dans les eaux françaises - Rapport de l'étude prospective sur les contaminants émergents dans les eaux littorales de la métropole et des DOM
Provedor de dados: 5
Autores: Abarnou, Alain; Bocquene, Gilles; Champin, Maryline; Durand, Gaetane; Gonzalez, Jean-louis; Le Moigne, Morgan; Masson, Jean-claude; Priou, Pierre; Tixier, Celine.
This study contributes to inventory programme on emerging pollutants in French waters and to the general reflection which will enable to update the list of relevant substnaces to be included in the new monitoring programmes to come. This work concerns the coastal part of the inventory programme on marine waters and sediments of France and five overseas french departments (OFD). In this goal, passive sampling techniques and direct extraction techniques have been tested through the implementation of in situ systems integrators POCIS (Polar Organic Chemical Integrative Sampler) and the extraction by SBSE bars (Stir bar sorptive extraction) directly in the waters sampled. Finally, analyzes of sediment completed the acquisition of data. Arount 40 stations were...
Tipo: Text
Palavras-chave: Eaux littorales; Eaux côtières; Sédiment; Métropole; DOM; Pollution; Substances chimiques; POCIS; SBSE; Coastal waters; Sediment; France; Overseas french departments; Pollution; Chemicals contaminants; POCIS; SBSE.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00259/36994/35483.pdf

Qualité des eaux littorales des Pertuis Charentais : Bilan et diagnostic
Provedor de dados: 5
Autores: Rostagno, Bernard; Violleau, Allain; Brun, Céline; Dietrich, Patrice; Fillon, Alain; Goulletquer, Philippe; Guichet, Roger; Kantin, Roger; Legay, Didier; Loubersac, Lionel; Masson, Daniel; Rocher, Gregory; Ryckaert, Mireille; Thomas, Gerard; Fichet, Denis; Guyot, Thierry; Miramand, Pierre; Pigeot, Jacques; Seguignes, Michel.
Cette étude, qui a rassemblé les compétences des instances de l'Etat chargées de la surveillance du milieu littoral (DDE, DDASS, IFREMER, Université de La Rochelle) a permis de dresser, à la veille de l'an 2000, un bilan de la situation environnementale du littoral de la « mer des Pertuis». Ce bilan, diversifié dans sa présentation, passe en revue les points marquants de "l'état de santé" de l'environnement, qu'il s'agisse de pollutions ciblées (chimiques, bactériologiques) ou d'autres nuisances variées. Il met en exergue les points forts et les points faibles en matière d'environnement littoral, et rappelle les efforts mis en oeuvre par les différentes administrations chargées de sa surveillance. Dans un premier temps, plus de 250 références...
Tipo: Text
Palavras-chave: Environnement; Qualité eaux; Littoral; Caractéristiques physiques; Economie; Qualité chimique; Qualité bactériologique; Phycotoxines; Biodiversité; Pollution; Recommandations; Pertuis Charentais; Département Charente-Maritime.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00072/18371/15943.pdf

L'élevage conchylicole sur filière : revue bibliographique
Provedor de dados: 5
Autores: Robert, Stephane; Prou, Jean; Le Moine, Olivier; Taillade, Sylvie.
La revue bibliographie de l'élevage conchylicole sur filière permet de situer l'évolution de cette technique en France et dans le monde. Elle regroupe les travaux disponibles tant sur les méthodes et les techniques, que sur les contraintes biologiques et environnementales qui conditionnent ce type d'élevage. Les techniques d'élevage conchylicole sur filières sont directement dépendantes de l' environnement disponible. Si l'élevage sur filière de surface nécessite des zones protégées peu disponibles sur le littoral atlantique, la filière de sub-surface correspond mieux aux possibilités de développement en site semi-abrité tels que les Pertuis charentais. L'élevage en filières immergées permet d'envisager la recherche de nouveau espace en mer ouverte comme...
Tipo: Text
Palavras-chave: Algue toxique; Bioaccumulation; Capacité trophique; Compétiteur; Densité élevge; Elevage en suspendu; Filière; Eutrophisation; Génétique; Matière particulaire; Mer ouverte; Mortalité; Phytoplancton; Pollution; Production primarie; Technique élevage; Transfert de biotope.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/00074/18510/16050.pdf

Rapport d'activité année 1978 de l'Inspection Principale de La Tremblade
Provedor de dados: 5
Autores: Leon, Michel.
Rapport d'activité de l'Inspection Principale de La Tremblade concernant l'année 1978
Tipo: Text
Palavras-chave: Contrôle sanitaire; Bactériologie; Conchyliculture; Gisements naturels; Reparcage; Epuration; Pollution; Assainissement; Marennes Oléron.
Ano: 1978
URL: http://archimer.ifremer.fr/doc/00070/18090/15638.pdf

Editorial: Plastic Pollution
Provedor de dados: 5
Autores: Galgani, Francois; Pham, Christopher Kim; Reisser, Julia.
Tipo: Text
Palavras-chave: Plastic; Pollution; Models; Microplastics; Degradation.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00400/51138/51910.pdf

Action de l'acétate de tributyle-étain sur les oeufs et les larves D de deux mollusques d'intérêt commercial : Crassostrea gigas (Thunberg) et Mytilus galloprovincialis (Lmk)
Provedor de dados: 5
Autores: Robert, Rene; His, Edouard.
The Tributyl tin acetate, a component of certain antifouling paints, has deleterious effects on eggs and D shaped larvae from Crassostrea gigas at 5 p.p.b. (HIS &amp; ROBERT, 1980). Here we have tested concentrations as low as 1 p.p.b. on eggs and on 24 hours old larvae both from Crassostrea gigas and Mytilus galloprovincialis. The same results are got ; this product kills embryos and larvae in a few days ; it prevents growth of 24 hours old larvae exposed to this toxic. Mussels larvae seem to be less sensitive.
Tipo: Text
Palavras-chave: Antifouling; Larves; Pollution; Toxicité; Bivalvia; Crassostrea gigas; Mytilus galloprovincialis; Antifouling; Larvae; Pollution; Toxicity; Bivalvia; Crassostrea gigas; Mytilus galloprovincialis.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/00037/14862/12185.pdf

Tracers of physical and biogeochemical processes, past changes and ongoing anthropogenic impacts: The 43rd International Liege Colloquium on Ocean Dynamics, Liege, Belgium, May 2–6, 2011 A joint Liège Colloquium — Geotraces–BONUS–GoodHope meeting
Provedor de dados: 5
Autores: Gregoire, Marilaure; Anderson, Bob; Delille, Bruno; Jeandel, Catherine; Speich, Sabrina.
Tipo: Text
Palavras-chave: Trace elements and isotopes; Tracers of physical and biogeochemical processes; Pollution; Atmospshere-ocean-sediment interactions; Mathematical modelling.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00138/24958/26065.pdf

Etude des pollutions du bassin de Marennes-Oléron - Etude bactériologique (Décembre 1971 à Novembre 1972)
Provedor de dados: 5
Autores: Leon, Michel.
Dans le cadre de l'étude d'ensemble du bassin de Marennes-Oléron, le laboratoire de technologie et de contrôle de La Tremblade a procédé, au cours de la période d'étude de 12 mois, à la recherche de certains groupes de bactéries, tels que les coliformes totaux, les germes tests de contamination fécale (Eschérichia coli et le groupe des Streptocoques fécaux) et enfin les Clostridiums sulfite réducteurs.
Tipo: Text
Palavras-chave: Pollution; Surveillance; Bassin de Marennes Oléron; Bactériologie.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/00049/16063/13524.pdf

Lagune de Salses-Leucate. III.- Variabilité de la contamination bactériologique
Provedor de dados: 5
Autores: Le Bec, Claude; Carreras, Antoni; Comps, Marie-annick.
Sometimes, the monitoring network results provide an inhibited point of view to understand bacteriological process on the field. We must go further in contamination spatial or temporal structures to obtain a global picture. At Leucate, if a part of bacteriological contamination is correlated to precipitations, the main environmental factor to explain local variability seems to be the monthly variability population. This fact, completed by a spatial design, reveals a concentric gradient in the shellfish farrning area. Sorne hypothesis are discussed to explain this contamination (resurgence, aquatic birds droppings, ...)
Tipo: Text
Palavras-chave: Lagune; Méditerranée; Leucate; Salses; Pollution; Coliforrnes therrnotolérants; Règlementation.; Lagoon; Mediterranean; Leucate; Salses; Pollution; Therrnotolerant coliforrns; Legislation.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00073/18424/15969.pdf

Acetylcholinesterase activity in copepods (Tigriopus brevicornis) from the Vilaine River estuary, France, as a biomarker of neurotoxic contaminants
Provedor de dados: 5
Autores: Forget, Joelle; Beliaeff, Benoit; Bocquene, Gilles.
From April 1997 to June 1998, 14 measurements of acetylcholinesterase (AChE) enzymatic activity were performed with the copepod, Tigriopus brevicornis, collected at five stations in the Vilaine River estuary (South Brittany, France). Simultaneously, four chemical analyses of triazines and one analysis of total pesticides in water were undertaken. AChE activity levels in T brevicornis were compared to the levels measured at a reference site not exposed to effluents from Vilaine River. Results reveal significant differences between AChE activity levels depending on location of stations in the plume of the river with an increasing gradient of activity from the upstream to the downstream stations, thus indicating that neurotoxic contaminants are mainly brought...
Tipo: Text
Palavras-chave: Monitoring; Estuary; Pollution; Pesticides; Tigriopus brevicornis; Acetylcholinesterase activity.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-737.pdf

Choix de products pour lutter contre la pollution du milieu marin par les hydrocarbures. II. Efficacite des products antipetrole.
Provedor de dados: 5
Autores: Michel, Pierre.
Standard methods were used to assess the effectiveness of 101 products for use against oil slicks. Products were emulsifiers, agglomerants or precipitants and were tested against oil from Edjele, Kuwait and Syria. For each kind of product, a review is given of the previous tests, the choice of methods is discussed, the methodology is described, and results are presented and interpreted. In addition, the relationship between physical properties and effectiveness is discussed, with graphical examples and the advantages and disadvantages are indicated. It is concluded that at present no 'miracle' product exists for use in this field. Agglomerating powders would be ideal were it not for problems in putting them to use, and, wind because of the need to use them...
Tipo: Text
Palavras-chave: Efficiency; Choice of products; Oil spills; Pollution.
Ano: 1972
URL: http://archimer.ifremer.fr/doc/1972/publication-2072.pdf

Pseudo-imposex: male features in female volutes not TBT-induced (Gastropoda: Volutidae)
Provedor de dados: 16
Autores: Swennen, C.; Horpet, P.
The occurrence of a penis in female gastropods of the superfamily Muricoidea (infraorder Neogastropoda) has commonly been accepted as an indicator of tributyltin (TBT) pollution. Some species seem less sensitive than others, and one belonging to the family Columbellidae has been reported that it lacks the imposex response. During a survey in South-east Asian waters, females of Cymbiola nobilis and Melo melo (family Volutidae) with a small penis and an external vas deferens were initially considered as showing imposex. Doubt arose when 100% of the females had a penis on sites where other gastropods showed no or a low imposex incidence. During the present study, several hypotheses could be rejected such as (1) that the volutes are extremely sensible for TBT;...
Tipo: Article / Letter to the editor
Palavras-chave: Indo-Pacific; Pollution; Melo; Cymbiola; 42.73.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/269644

Effects of the proximity from an industrial plant on fish assemblages in the rio Paraíba do Sul, southeastern Brazil
Provedor de dados: 83
Autores: Pinto,Benjamin Carvalho Teixeira; Peixoto,Magna Galvão; Araújo,Francisco Gerson.
This work aims to analyze changes in the fish assemblages along a longitudinal reaches of the rio Paraíba do Sul, one of the most used Brazilian aquatic systems, to assess the river "health" and to identify eventual recovery trends. Standardized monthly samplings were carried out at six sites, from October 1997 to September 1999, using casting, sieves, seine and gill nets. Three zones were searched: upstream (Z I), downstream (Z III) and nearby the source of pollution (Z II). Three univariate distribution methods were used: ABC (abundance-biomass curves), K-dominance curves, and geometric class's distribution. Additionally, cluster analysis was applied to detect eventual patterns. The ABC and K-dominance curves showed Z II with evident indication of stress...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish community; Neotropical fauna; Pollution; Water quality; ABC curves; Cluster analysis.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000200013

Los ensayos ecotoxicológicos como una alternativa para la evaluación del impacto ambiental, evaluación de una molécula de interés
Provedor de dados: 20
Autores: Camacho Bordón, S.; Aguila Jiménez, E.; Cortés Rodríguez, R.; Pérez Donato, A.; Serrano Pérez, H.; Agramonte Peñalver, D.
In the last years, the world has taken concious of the necessity of monitoring the impact of contaminants from social and productive activities of modern societies on ecosystems to solve this problem a series of test have been achieved and yet are tried to be improved which are directed to especific aspects of ecosystems. In our country different institution have joined efforts to give an answer related to the evaluation of compounds used in agriculture. This work is coordinated by Toxicological National Center of Cuba (CENATOX) and has assigned to each member of the national toxicological net the task of standardizing reliable test for a rapied and well aimed answer in this sense. As members of this net, the Center of Bioactive Chemicals Toxicological...
Tipo: Conference Material
Palavras-chave: Ecotoxicology; Ecosystems; Environmental impact; Pollution effects; Pollution; Ecotoxicology; Ecosystems; Environmental impact; Pollution; Http://aims.fao.org/aos/agrovoc/c_35788; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2006
URL: http://hdl.handle.net/1834/2252

Coutry Profile Environment Ghana
Provedor de dados: 20
This report presents information on the Environment of the Country in the following arrangement: 1 Keywords 2 Fact Sheet 3 Organization 4 Current Environmental Issues 5 International Relations 6 Information Sources 7 References
Tipo: Other
Palavras-chave: Environmental surveys; Pollution; Sanitation; Soil degradation; Deforestation; Http://aims.fao.org/aos/agrovoc/c_14073; Http://aims.fao.org/aos/agrovoc/c_7168; Http://aims.fao.org/aos/agrovoc/c_15590.
Ano: 1999
URL: http://hdl.handle.net/1834/658

Pollution et écosystèmes marins en Mauritanie
Provedor de dados: 20
Autores: Ba, M.
Tipo: Journal Contribution
Palavras-chave: Ecosystems; Pollution; Sea pollution.
Ano: 1982
URL: http://hdl.handle.net/1834/4750

Metodología para la evaluación de riesgos sanitarios ante la contaminación fecal.
Provedor de dados: 20
Autores: Delgado Gómez, Y.; Miravet Regalado, M.E.
La contaminación fecal es un peligro de origen antrópico que amenaza la zona costera fundamentalmente. En Cuba, los esquemas regulatorios para el control de la calidad microbiológica de las aguas de uso recreativo han estado basados en un único “valor límite permisible” que define si un área es apta o no para el baño (NC 22:99). Sin embargo, esta norma no permite evaluar el nivel de peligro, vulnerabilidad y riesgo sanitario al que se expone la población ante un determinado grado de contaminación fecal, por tanto, en este trabajo se propone por primera vez en Cuba, una metodología que permita evaluar el nivel de peligro, vulnerabilidad y riesgo en una zona marino costera ante la contaminación fecal. Según la concentración de coliformes fecales presente se...
Tipo: Journal Contribution
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2009
URL: http://hdl.handle.net/1834/3388

Impact des émissaires et canalisation sur l'environnement de la baie de Tanger ( Maroc ) : Approche géochimique
Provedor de dados: 20
Autores: Achab, M.; El hatimi, I.; El moumni, B.
Dans le but d’évaluer le degré de contamination chimique et/ou organique des sédiments superficiels le long des émissaires continentaux, des échantillons de sédiments de surface ont été prélevés et analysés le long des oueds Souani et Mghogha et au niveau de la canalisation majeure de la ville de Tanger débouchant sur la baie située sur la marge méditerranéenne marocaine. La dynamique sédimentaire dans les oueds montre exceptionnellement une évolution amont–aval granocroissante en relation avec l’activité anthropique (remblaiement des bassins versants par les matériaux de construction tels que les briques, ciments, verres, etc.). La matière organique est présente à des teneurs relativement élevées en corrélation positive avec la sédimentation fine. L’azote...
Tipo: Journal Contribution
Palavras-chave: Sedimentology; Mineralogy; Pollution; Geochemical surveys; Bay dynamics.
Ano: 2002
URL: http://hdl.handle.net/1834/199

Bio-écologie des cétacés et enjeux de leur conservation pour les Etats côtiers africains comme le Sénégal
Provedor de dados: 20
Autores: Ndao, Ibrahima.
Tipo: Theses and Dissertations
Palavras-chave: Whaling; Anatomy; Morphology (biology); Physiology (fish); Preservation (fishery products); Biodiversity; Baleens; Migrations; Reproductive cycle; Fish consumption; Overfishing; Pollution.
Ano: 2006
URL: http://hdl.handle.net/1834/5005

Evaluación de la tasa fotosintética del alga verde Rhizoclonium riparium (Roth) Kützing ex Harvey, expuesta a cobre y su uso como indicador de contaminación por metales en aguas estuarinas
Provedor de dados: 20
Autores: Montoya, W.; Peña, E.J.; Benítez, R.
Algae have been used as bioindicators by having several advantages such as they have short life cycles, they can take up nutrients directly from water, they are generally easy to collect in sufficient amounts from various habitats; and they readily accumulate compounds present in seawater, making tissue analyses reliable indicators of water quality. In order to evaluate the bioremoval capability of the green alga Rhizoclonium riparium, the photosynthetic responses to heavy metal pollution under different sublethal concentrations of copper was assessed. Photosynthetic rates were significantly low (p &lt;0.05) at low copper concentrations, between (0.01 y 10 mg/l). Maximum photosynthetic values were shown at 30 y 60 mg/l and almost cero at 150 mg/ l of Cu....
Tipo: Conference Material
Palavras-chave: Heavy metals; Biological stress; Algae; Indicator species; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Heavy metals; Pollution; Bioaccumulation; Copper; Water quality; Estuaries; Algae; Indicator species; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_32389; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_35790.
Ano: 2006
URL: http://hdl.handle.net/1834/2256

The Assessment of Water Quality and Pollution in Tanzania
Provedor de dados: 20
Autores: Mohammed, S.M.
The coastal area of Tanzania (Fig. 1) encompasses a number of habitats that include coral reefs, mangroves, seagrass beds, sand banks, wetlands and beaches, among others. In addition to being essential linkages in the overall functioning of the coastal area, these coastal habitats support various resources both living and non-living. In addition, for generations the coastal area has provided life support to coastal communities where such activities as fisheries and related activities have played an important role in the social and economic development of local communities. In recent years, coastal tourism and mariculture have immerged as being potentially among most important economic activities nationally. The well being of these habitats and resources...
Tipo: Preprint
Palavras-chave: Coral reefs; Mangroves; Seagrass; Wetlands; Beaches; Water quality; Pollution.
Ano: 2000
URL: http://hdl.handle.net/1834/183

Investigation of Pollution from Land Based Sources and Activities and their Impacts on the Marine Environment: the Caroni River Basin
Provedor de dados: 20
Autores: Gabbadon, P.; Banjoo, D.; Bullock, C.; Norville, W.; Sookbir, S.; LLoyd, G.; Ragbirsingh, Y.; Juman, R.; Chin, X.; de Souza, G.; Lall, R.; Rambarath-Parasram, V.; O'Brien-Delpesh, C.
"The Institute of Marine Affairs (IMA) is investigating the impacts of pollution from land-based sources and activities of the Caroni River Basin (CRB) on the marine environment... The project will investigate the types, sources, levels of pollution, fate of pollutants, and potential impacts on the marine environment. In addition, the project will investigate the impacts of physical alterations of habitats caused by land uses in the Caroni River Basin."
Tipo: Other
Palavras-chave: Pollution; Marine environment; River basins; Pollution; Marine environment; River basins; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6613.
Ano: 2006
URL: http://hdl.handle.net/1834/2911

Heavy metals concentrations in certain tissues of five commercially important fishes from El-Mex Bay, Alexandria, Egypt
Provedor de dados: 20
Autores: Khaled, A.
The distribution of eight heavy metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb nd Zn) were detected in muscles, gills, livers and bones of five fish species namely, Sargus sargus, Siganus rivulatus, Mugil cephalus, Caranx crysos and Scomberomorus commerson collected from El-Mex Bay, Alexandria during January 2003. Iron and zinc were most abundant in all fish tissues under investigation. Iron, zinc and copper recorded highest concentration levels in liver while cadmium, cromium and lead recorded their highest values in gills and bones. Provisional Tolerable Weekly Intake (PTWI) demonstrated that the concentration of metals (Cd, Cu, and Pb) in muscles of the five fishes are lower than the PTWI values, and accordingly there is no risk yet for human consumption of flesh...
Tipo: Journal Contribution
Palavras-chave: Heavy metals; Pollution; Fish; El-Mex Bay; Alexandria; Egypt Accumulation Fish consumption.
Ano: 2004
URL: http://hdl.handle.net/1834/1086

Distribución de coliformes fecales en el área marina de la costa ecuatoriana en las Provincias de Esmeraldas y Manabí, 2008-2013
Provedor de dados: 20
Autores: Palacios, C.
Here, we describe an evaluation of fecal coliform bacteria contamination state in the ecuadorian river side area in the Provinces of Esmeraldas and Manabí, between march and may from 2008 to 2013, from an n=109 data samples. From the results, it is pretty obvious the bacteria contamination in very specific places such as Esmeraldas's river mouth, Chone's river estuary and the opposite side of the main population from the studied areas such as Esmeraldas, La Chorrera in Perdenales, Bahía de Caráquez, Jaramijó and Manta. It provides an evaluation based on the maximum limit allowed of 200 NMP/100 ml for estuarine and sea waters as it's described on the chapter VI annex 1 of Texto Unificado de la Legislación Secundaria del Ministerio del Ambiente (TULSMA), as...
Tipo: Journal Contribution
Palavras-chave: Bacteria; Pollution; Pollution legislation.
Ano: 2013
URL: http://hdl.handle.net/1834/5751

evaluation of the microbial quality of the river nile waters at damietta branch, egypt
Provedor de dados: 20
Autores: Sabae, S.Z.; Rabeh, S.A.
This study aims to the evaluation of the microbial quality of the River Nile water at Damietta Branch. Water samples were taken from the branch, during the period from autumn, 2005 till the summer of 2006. Some environmental parameters such as temperature, transparency, depth and pH were monitored. In addition, the bacteriological analyses involved total viable bacterial counts (TVBCs), total coliforms (TC) and estimation of faecal coliforms (FC), faecal streptococci and pathogenic bacteria. The results of physicochemical parameters showed that the temperature values varied from 17°C to 25°C and the transparency from 40cm to 220cm. Whereas, the depths varied from 3m to 25m and pH values from 7.24 to 8.44. The bacteriological analyses showed that TVBCs...
Tipo: Journal Contribution
Palavras-chave: Field Study; Pollution; Pathogenic bacteria; Pollution; Pathogenic bacteria; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_34317.
Ano: 2007
URL: http://hdl.handle.net/1834/1899

Estudio de la contaminación con hidrocarburos de un ecosistema de manglar en cayo Santa María, Jardines del Rey, Cuba
Provedor de dados: 20
Autores: Bermúdez Acosta, Jelvys; González Delgado, Alejandro; Castro Hernández, Yoelvis; Ortiz Guilarte, Eudalys; Núñez Moreira, Roberto; Oramas García, Julio; García García, Yaliany.
El propósito de esta investigación fue estudiar la contaminación de un ecosistema de manglar impactado con hidrocarburos en el sector centro sur de Cayo Santa María, Jardines del Rey, Cuba. Para el estudio de los indicadores microbiológicos y fisicoquímicos fue diseñado un muestreo estratificado, donde se seleccionaron dos estratos y diez estaciones de muestreo, considerando los patrones de flujos de marea en pleamar y bajamar, así como el impacto perceptible de la contaminación. La determinación de las poblaciones de microorganismos heterótrofos totales (BHT) y degradadores de petróleo (BDP) en agua y sedimentos se realizó por el método de conteo de colonias, expresadas como UFC·mL-1 o UFC· g-1 según la matriz de análisis. El contenido de hidrocarburos...
Tipo: Journal Contribution
Palavras-chave: ASW; Cuba; Degradation; Dispersion; Hydrocarbons; Microorganisms; Pollution.
Ano: 2014
URL: http://hdl.handle.net/1834/5912

Oxígeno disuelto y materia orgánica en cuerpos de aguas interiores del Archipiélago Sabana-Camagüey, Cuba.
Provedor de dados: 20
Autores: Montalvo, J.F.; García, I.; Loza, S.; Esponda, S. C.; César, M.E.; González de Zaya, R.; Hernández, L.
Entre los años 2001 y 2005, fueron evaluados los contenidos de oxígeno disuelto y de materia orgánica en la fase acuosa de las bahías de Cárdenas, Santa Clara, Puerto de Sagua la Grande, San Juan de los Remedios, Buena Vista, Los Perros, Jigüey y La Gloria. En el Puerto de Sagua la Grande y la zona costera de la bahía de Buena Vista se registraron concentraciones de oxígeno disuelto inferiores al valor de saturación en la época de lluvias. Predominaron los montos de materia orgánica expresados en términos de la demanda bioquímica de oxígeno (DBO5) entre 1,0 -2,0 mgO2/L, típicos de agua marina de calidad dudosa para uso pesquero, según la NC-25:99. Las concentraciones más comunes de la demanda química de oxígeno (DQO) al permanganto en medio alcalino fueron...
Tipo: Journal Contribution
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2008
URL: http://hdl.handle.net/1834/3402

Preliminary Discussion on the Sea Water Quality Status in the 2008 Olympics Boat-sailing Field and Adjacent Area.
Provedor de dados: 20
Autores: Shi, Xiaoyong; Chen, Lili; Zhu, Chenjian; Wang, Xiulin.
A cruise of survey in the 2008 Olympics boat-sailing field and adjacent area was carried out on August 28th, 2003. Preliminarily analysis on the eutrophication status was made on the basis of the content of dissolved inorganic nitrogen (DIN), dissolved inorganic phosphate (PO4-P)，dissolved oxygen(DO) and chemical oxygen demand (COD) as well. The results indicated that in most of the survey area, water quality was in accordance with the 1st class National Seawater Standard except the average concentration of petroleum hydrocarbon which was beyond the 2nd class National Seawater Standard. The concentrations of PO4-P as well as DIN were mainly influenced by the runoff or drainage from lands, with a comparatively higher concentration in the coastal areas from...
Tipo: Journal Contribution
Palavras-chave: Eutrophication; Pollution; Mineral salts (nutrients).
Ano: 2007
URL: http://hdl.handle.net/1834/5866

Integrated Management of the Golf of Guinea Fight against Coastal Pollution
Provedor de dados: 20
Autores: Akpabli, R.K.
The countries bordering the Golf of Guinea are the Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon, Guinea Equatorial, Gabon and Sao-Tome-et-Principe (which is actually an Island in the Golf of Guinea). These countries together make up about one third of the population of Sub-Saharan-Africa. In the coastal zones the population has considerably increased. Abidjan, the capital of the Ivory Coast, is estimated to have a population of 2.5 million. With a yearly growth rate of 5% it will augment to 8 million in 2025. In Nigeria, Lagos, which is situated in the coastal zone, has more than 9 million inhabitants. In Cameroon, Duala, which is situated in the estuary Wouri, has more than 1.4 million inhabitants. In Ghana, Accra and its metroplitan zone has...
Tipo: Conference Material
Palavras-chave: Coastal zone; Pollution.
Ano: 2000
URL: http://hdl.handle.net/1834/300

Heavy metals distribution of soils around mining sites of cadmium-rich marine sedimentary phosphorites of Kpogamé and Hahotoé (Southern Togo)
Provedor de dados: 20
Autores: Gnandi, K.; Tobschall, H.J.
Metal concentrations of 37 soil samples taken from mining areas (abandoned mine pits and transport routes) in Kpogamé and Hahotoé (southern Togo) range from 0.2-43 ppm for Cd, 15-115 ppm for Pb, 182-1,029 ppm for Cr, 18-356 ppm for Cu, 15-342 pm for Ni, 90-513 ppm for V, 35-536 ppm for Zn, 80-469 ppm for Zr and 266-3,161 ppm for Sr. The tropical alteration of the ore waste plays an important role in the distribution of trace elements in the studied soils. Because the alteration affects the element mobility, generally old abandoned mining areas, which , together with soils near the transport routes, show a higher degree of contamination. Under low pH and oxidising conditions in studied soils Cd, Ni and Zn are generally easily mobilised and are thus...
Tipo: Journal Contribution
Palavras-chave: Heavy metals; Mining; Phosphorite; Pollution; Heavy metals; Pollution; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2002
URL: http://hdl.handle.net/1834/2715

Caracterización y evaluación de la calidad del agua de la Bahía de Jaramijó-Provincia de Manabí durante el año 2008
Provedor de dados: 20
Autores: Rodriguez de Morán, A.
The current research was developed in Bahia of Jaramijó in the Province of Manabí during 2008, as part of the major project: " Characterization of the Ecuadorian Coast"  that has been developing by INOCAR, in order to contribute to the proper use of resources and the environment. It characterized and assesses the results obtained in the research of the quality of water of Bahía of Jaramijó, taking into consideration the averages and their behaviour in each level studied in two different season in the year (wet-dry) and in two tide condition (ebb and flow) of the different parameter physical, chemical and microbiological. During the research was established that coastal marine waters of Bahía of Jaramijó, not show pollution of organic origin neither...
Tipo: Journal Contribution
Palavras-chave: Water quality; Environmental legislation; Bacteria; Pollution; Oxygen.
Ano: 2013
URL: http://hdl.handle.net/1834/5758

Biodegradation kinetics of bromoxynil as a pollution control technology
Provedor de dados: 20
Autores: Askar, A.I.; Ibrahim, G.H.; Osman, K.A.
Nonpoint source (NPS) pollution from agriculture is the leading source of impairment to Survey Rivers and lakes. Pesticides are one of the major NPS pollutants that result from agricultural activities. Among those pesticides, is Bromoxynil (BRMX) which is a widely used herbicide. The present study was carried out to determine the capability of selected biological control agents to degrade BRMX at different incubation periods. Microbial degradation of BRMX at the rate of 100 ppm in pure liquid culture media of either seven isolates of bacteria; Azotobacter chroococcum, Azospirillium barasilense, Klebsilense pneumoneae, Pseudomonas cepacia, Pseudomonas fluoresences, Bacillus subtilis, and Bacillus polymyxa or two isolates of fungi; Trichoderma viride and...
Tipo: Journal Contribution
Palavras-chave: Laboratory Study; Biodegradation; Pollution; Biodegradation; Pollution; Http://aims.fao.org/aos/agrovoc/c_9261; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2007
URL: http://hdl.handle.net/1834/2200

Presencia de hidrocarburos en el litoral ecuatoriano, crucero de prospección pesquera T03/10/02D
Provedor de dados: 20
Autores: Chalén, F.
Los hidrocarburos fueron investigados en el área costera del Litoral Ecuatoriano bajo el proyecto ODEPLAN del INP. La información evaluada corresponde al mes de octubre del 2003. Se programaron un total de 42 sitios para el muestreo de sedimentos de fondo, los cuales fueron demarcados con un GPS (Global Positional System). Las muestras de sedimentos fueron colectadas utilizando draga Van Veen, las mismas que fueron analizadas de acuerdo a la metodología señalada por UNIESCO/COI/PNUMA y leídas por Espectrofluometría. La zona mayormente monitoreada fue la Subárea A correspondiente al estuario externo del Golfo de Guayaquil, la misma que no se encontró significativamente contaminada, seguida de las Subáreas B y C, puesto que la mayoría de las concentraciones...
Tipo: Journal Contribution
Palavras-chave: Hydrocarbons; Sediments; Organic compounds; Pollution; Hydrocarbon analysis.
Ano: 2010
URL: http://hdl.handle.net/1834/5373

Nivel de contaminación por hidrocarburos del petróleo en zonas costeras de Cuba
Provedor de dados: 20
Autores: Rodríguez Martínez, R.; Torres Rodríguez, I.; Suárez Melo, Y.; García Fuentes, O.; Beltrán González, J.
The concentration of hydrocarbons of petroleum in marine sediments in areas of industrial, harbour and fishing interest to the N of the island of Cuba, as the bays of Cienfuegos, Port Father, Guantánamo, Matanzas with special emphasis in Sagua La Grande and Havana. The results showed high levels of contamination for these organic compounds in the bay of Havana, with a medium 1 220 mg·kg-1 dry matter. The biggest accumulations were in the creeks of Marimelena and Atarés. A tendency exists to diminish the degree of contamination for petroleum in these sediments. In the bay of Sagua La Grande the concentrations of total hydrocarbons were not high (averague 45 mg·kg-1 dry matter), and it allowed to classify to this ecosystem with very little influenced by...
Tipo: Preprint
Palavras-chave: Pollution; Petroleum hydrocarbons; Coastal zone; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2010
URL: http://hdl.handle.net/1834/3564

Tolerance tests with three refined petroleum products and edible mollusc - Tympanotonus fascatus (Linne)
Provedor de dados: 20
Autores: Oyewo, E.O.
The tolerance of Tympanotonus fuscatus (linne) to films and dispersions of three refined petroleum products has been investigated. The tolerance ranking was Diesel Oil &gt; Kerosene &gt; Petrol. The dispersions were more deleterious to the test animals by varying orders of magnitude. Responsiveness and the capacity for proper orientation were adversely affected with the latter being affected before the former. An indication of upper threshold values for two of the observed responses is presented.
Tipo: Report
Palavras-chave: Pollutant identification; Pollution; Toxicity tests; Tolerance; Pollution; Tolerance; Http://aims.fao.org/aos/agrovoc/c_6077; Http://aims.fao.org/aos/agrovoc/c_37740.
Ano: 1988
URL: http://hdl.handle.net/1834/2437

Pollution of wetlands in Tanzania
Provedor de dados: 20
Autores: Mkuula, S.
Pollution of wetlands is becoming a serious concern, due mainly to the rapid increase ofhuman development activities. Although most extensive wetlands are in remote places where the human activities which lead to pollution of the environment are minimal, somehave become polluted by waste products related to development activities or humansurvival. In this paper, major types of pollution from human activities are considered, includingurbanisation, industrialisation, mining, agricultural activities and oil pollution. Proposals for combating pollution problems in wetlands are discussed with a focus onpolicy, planning and legislation; administration and institutional support; environmental research and technology; and improving information, environmental...
Tipo: Report
Palavras-chave: Pollution; Wetlands.
Ano: 1993
URL: http://hdl.handle.net/1834/529

Water quality trends and input loads to Lake Nakuru
Provedor de dados: 20
Autores: Kulecho, Andrew; Muhandiki, Victor.
Water quality trends of Lake Nakuru, Kenya and its feeder streams were monitored in 2001-2004. Water samples were obtained from eleven stations in the lake and five points on inflowing streams. The items monitored were physico-chemical and biological components. The drainage basin was characterized by recurrence of dry spells throughout the period with water losses in the lake exceeding the amount received to cause a fall in water volume. The lake water salts content rose – conductivity and alkalinity reached 58 ms/cm and 5,200 mg/l respectively. PH was more or less constant (10.00 – 10.36). Daytime oxygen concentration in the mid-lake system rose (to greater than 20 mg/l) while remaining low in the inflow portions of the lake. On one occasion, the lake...
Tipo: Proceedings Paper
Palavras-chave: Water quality; Biomass; Mortality causes; Anthropogenic factors; Phytoplankton; Pollution effects; Degradation; Man-induced effects; Inland waters; Freshwater pollution; Physicochemical properties; Inflow; Environmental monitoring; Land use; Urbanization; Environmental impact; Pollution; Freshwater.
Ano: 2006
URL: http://hdl.handle.net/1834/5312

Variabilidad estacional del fitoplancton y su relación con los parámetros ambientales en el estuario interior de Esmeraldas durante los años 2004-2005
Provedor de dados: 20
Autores: Tapia, M.E.
Se colectaron y analizaron un total de 96 estaciones distribuidas en cinco áreas de la Provincia de Esmeraldas durante los años 2004-2005. Se elaboraron gráficos de las especies (muestras de red de 50 µ) y la relación con los parámetros físicos y químicos. En la comunidad del fitoplancton presentó una variabilidad en la composición de especies, especialmente en el Terminal Petrolero durante septiembre del 2004 y disminuye en abril del 2005, la mayor densidad poblacional fue para el grupo de diatomeas. Las principales especies en el ambiente marino estuarino Climacosphenia monoligera, Pseudo-nitzschia paradoxa, Thalassiotrix frauenfeldii, Terpsinoe musica, Coscinodiscus excentricus. Las especies representativas en el ambiente marino Navicula tuscula,...
Tipo: Journal Contribution
Palavras-chave: Phytoplankton; Diatoms; Pollution; Estuaries; Station lists; Distribution.
Ano: 2012
URL: http://hdl.handle.net/1834/4653

Diagnóstico ambiental, impactos y respuestas de la laguna costera El Doctor. Playa Baracoa, Habana, Cuba
Provedor de dados: 20
Autores: Perigó - Arnaud, E.; Montalvo Estévez, J.; Miravet Regalado, M. E.; Enríquez Lavandera, D.; Cobas Gómez, L. S.; Ramírez Stout, O.; Rivas Rodríguez, L.; García Santos, R.
Se presenta un diagnóstico sobre la calidad ambiental de la laguna costera El Doctor a partir de las principales variables físico químicas y microbiológicas indicadoras de la contaminación orgánica, su estado trófico e higiénico sanitario en tres campañas de muestreo realizadas entre febrero de 2006 y mayo y octubre de 2007. La laguna presenta un alto grado de contaminación orgánica, altos valores de nutrientes, así como, elevadas concentraciones de coliformes totales y fecales, y estreptococos fecales, los cuales, se encuentran por encima de los limites establecidos en las normas cubanas de calidad de agua para usos pesquero y recreativo (NC: 22-99 y NC: 25-99). La principal causa de la contaminación de la laguna son los residuales crudos originados por...
Tipo: Journal Contribution
Palavras-chave: Pollution; Pollution; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2009
URL: http://hdl.handle.net/1834/3423

Control de la calidad ambiental del ecosistema marino de la Bahía de Santiago de Cuba
Provedor de dados: 20
Autores: Regadera, R.; Gómez, Y.; García, E.; Gómez, L.
It is presented an analysis of several indicators of water quality in Santiago de Cuba bay and of the bacteriological state in five of its beaches. Samples were taken in surface and 8 m deep. A low transparency of the waters was detected, associated with high levels of ammonium, total phosphorus and chlorophyll. In surface the dissolved oxygen had high levels, but in 8 m there was anoxia in the most interior stations. The thermotolerant coliforms reached high concentrations in the stations of the central axis, but in the beahes, only El Níspero was not appropriate for direct contact, in accordance with the current cuban standard. By means of a principal components analysis it was determined that high ammonium and total phosphorus concentrations were...
Tipo: Preprint
Palavras-chave: Eutrophication; Nutrients (mineral); Pollution; Eutrophication; Pollution; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_6077.
Ano: 2010
URL: http://hdl.handle.net/1834/3572

Elemental concentrations and heavy metal pollution in sediments and suspended matter from the Belgian North Sea and the Scheldt estuary
Provedor de dados: 27
Autores: Van Alsenoy, V.; Bernard, P.; Van Grieken, R.
The elemental composition of sediment and suspended matter samples from the Belgian coastal and offshore regions of the Southern Bight of the North Sea and from the Scheldt estuary has been determined using X-ray fluorescence and atomic absorption spectrometry.Special attention was given to the heavy metals of the black and grey lists. The bulk sediment and the clay/silt fraction were analyzed. The average heavy metal contents in the fraction &lt;63 µm were comparable to the levels in the suspended matter. Different normalization techniques led to the identification of two different populations of sediments. Most of the sediments were enriched in Cd, Cr, Hg, Pb and Zn but no enrichment was found for Cu and Ni. Comparing these data with older data indicates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metals; Pollution; Sediments; Suspended particulate matter.
Ano: 1993
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2789

Nematodes as indicators pollution: a case study from the Swartkops River system, South Africa
Provedor de dados: 27
Autores: Gyedu-Ababio, T.; Furstenberg, J.P.; Baird, D.J.; Vanreusel, A.
Nematodes from the sediments of the Swartkops estuary in Port Elizabeth, South Africa were investigated at 10 selected sites along a salinity gradient in the subtidal region at neap tide. The relation between nematode density, genera, community structure and environmental parameters including concentrations of seven heavy metals, Mn, Ti, Cr, Pb, Fe, Sn and Zn in the sediment were investigated. The nematode community structure was significantly influenced by the chlorophyll a concentration and sediment particle-size distribution. The number of genera had significant negative correlation with chlorophyll a and two heavy metals, Fe and Zn in the sediment. The habitat preferences of the genera were also assessed. A combination of the Shannon-Wiener Diversity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Check lists; Density; Diversity; Ecology; Meiobenthos; Pollution; Sediment; Sediments; Nematoda [Nematodes].
Ano: 1999
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7328

Rol de las macroalgas en el biomonitoreo de la contaminación en «Marchica», la laguna de Nador
Provedor de dados: 85
Autores: Ben Chekroun,K; Moumen,A; Rezzoum,N; Sánchez,E; Baghour,M.
The Aquatic system contamination by organic pollutants and heavy metals is one of the most serious problems that might face the environment and organisms as a whole. Interestingly, the accumulation of these pollutants is due to the anthropogenic activity, namely the intensive use of fertilizers to obtain high yields in crop production. In this paper, we compared the levels of chlorophylls, proteins, dry weight and sucrose in some red (Alsidium sp. and Gracilaria sp.) and green algae (Ulva sp.) collected from Mohandis, near Kariat and Bou Areg. Our results indicate that the algae collected nearby Bou Areg, an area well-known for its high agricultural activity, contained high levels of pigments, proteins and sugars. From the chlorophyll results, we conclude...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae; Biomonitoring; Carbohydrates; Nador lagoon; Phytoremediation; Pigments; Pollution; Proteins.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572013000100005

Sorption-Desorption Behavior of Imazethapyr and Imazapic on Six Brazilian Soils
Provedor de dados: 87
Autores: MARINHO,M.I.C.; SOUZA,W.M.; CABRAL,M.F.; CASTRO NETO,M.D.; QUEIROZ,M.E.L.R.; SILVA,A.A.
ABSTRACT: The characterization of sorption-desorption for imazethapyr and imazapic in six agricultural soils was performed to assess the availability of these herbicides in pollution processes. In this pursuit, the batch equilibrium method and high-performance liquid chromatography were used. The magnitude of Kf values ranging from 0.38 to 2.52 mg1-n kg-1 Ln for imazethapyr and 0.43 to 2.72 mg1-n kg-1 Ln for imazapic indicate weak sorption in the evaluated soils. Soil pH (5.1 to 6.1) and iron oxalate affect sorption-desorption of both herbicides but the type and percentage of clay can be the main factor affecting these two processes. A high desorption percentage (&gt;70%) was found in Regosol, Dystric Plinthosol, Ferralsol (for both herbicides), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Imidazolinone; Pollution; Batch equilibrium.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100342

Second Best Environmental Policies under Uncertainty
Provedor de dados: 31
Autores: Antoniou,   Fabio; Hatzipanayotou,   Panos; Koundouri,   Phoebe.
We construct a strategic trade model of an international duopoly, whereby production by exporting firms generates a local pollutant. Governments use environmental policies, i.e., an emissions standard or a tax, to control pollution and for rent shifting purposes. Contrary to their firm, however, governments are unable to perfectly foresee the actual level of demand, the cost of abatement and the damage caused from pollution. Under these modes of uncertainty we derive sufficient conditions under which the governments optimally choose an emissions tax over an emissions standard.
Tipo: Working or Discussion Paper
Palavras-chave: Strategic Environmental Policy; Pollution; Choice of Policy Instrument; Uncertainty; Environmental Economics and Policy; F12; F18; Q58.
Ano: 2010
URL: http://purl.umn.edu/59375

Energy-Use, the Environment and Development: Observations with Reference to China and India
Provedor de dados: 31
Autores: Tisdell,   Clement A.; Roy,   Kartik C.
None
Tipo: Working or Discussion Paper
Palavras-chave: Kuznets Curve; China; India; Energy use; Pollution; Environmental Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/48953

Japan 1968: A Reflection Point During the Era of the Economic Miracle
Provedor de dados: 31
Autores: Hamada,   Koichi.
1968 was an epoch-making year in the Japanese economic history, or in the Japanese history in general. In this centennial year after the Meiji restoration, Japan's GNP became the second largest in the world surpassing West Germany. Japan was cruising on one of the most rapid growth trajectories, but it was anticipating the shade of future changes. Student movements flourished, being synchronized the world over, pollution in urban areas erupted and inflationary pressure began to surface. Japan's balance of current account turned into a pattern of chronic surplus, the pattern that led to the collapse of the Bretton Woods regime. In the socio-economic sense, 1968 was a reflection point of Japan's high growth period. This paper describes the economic forces...
Tipo: Working or Discussion Paper
Palavras-chave: Japan; High growth period; Student movements; Collapse of Bretton Woods; Pollution; Political Economy.
Ano: 1996
URL: http://purl.umn.edu/28487

Asymmetric Willingness-to-Pay Distributions for Livestock Manure
Provedor de dados: 31
Autores: Norwood,   F. Bailey; Luter,   Ryan L.; Massey,   Raymond E.
The Environmental Protection Agency's new Concentrated Animal Feeding Operations (CAFO) regulations are forcing some farms to export livestock manure to off-farm acres. The regulation compliance cost depends on the willingness of neighboring crop producers to accept or pay for the manure. This study estimates a manure willingness-to-pay distribution for crop producers using a contingent valuation mail survey. A flexible parametric distribution is borrowed from the crop yield literature, which shows that manure willingness to pay is left-skewed. Most crop producers in our sample will pay a positive price close to the savings in commercial fertilizer, but approximately 25% require a payment before accepting manure.
Tipo: Journal Article
Palavras-chave: Animal waste; Asymmetric distribution; Contingent valuation; Manure; Nonmarket valuation; Pollution; Willingness to pay; Environmental Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/30972

Estimating the Welfare Effect of Congestion Taxes: The Critical Importance of Other Distortions Within the Transport System
Provedor de dados: 31
Autores: Parry,   Ian W.H.; Bento,   Antonio M.
This paper uses analytical and numerical models to illustrate how the presence of other distortions within the transport system changes the overall welfare effect of a congestion tax. These other distortions include a transit fare subsidy, congestion on competing (unpriced) routes, accident externalities, gasoline taxes, and pollution externalities. Each of these pre-existing distortions can substantially alter the welfare effect of a congestion tax that would be predicted by a first-best analysis. If congestion taxes encourage travel on other congested routes, they can produce sizeable indirect welfare losses. In addition, induced reductions in the demand for gasoline can lead to substantial welfare losses when, as appears to be the case for European...
Tipo: Working or Discussion Paper
Palavras-chave: Congestion tax; Welfare effect; Transit subsidy; Gasoline tax; Accidents; Pollution; Public Economics; R41; H21; H23.
Ano: 2000
URL: http://purl.umn.edu/10678

Allocating Pollution Load Reductions between States Fairly, Efficiently and Successfully
Provedor de dados: 31
Autores: Kwasnica,   Anthony M.
Tipo: Journal Article
Palavras-chave: Pollution; Politics; Chesapeake Bay; Transboundary Agreements; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q58.
Ano: 2011
URL: http://purl.umn.edu/117407

A Nonlinear Offset Program to Reduce Nitrous Oxide Emissions Induced by Excessive Nitrogen Application
Provedor de dados: 31
Autores: Rosas,   Francisco; Babcock,   Bruce A.; Hayes,   Dermot J.
On average, U.S. farmers choose to apply nitrogen fertilizer at a rate that exceeds the ex post agronomically optimal rate. The technology underlying the yield response to nitrogen rewards producers who over apply in years when rainfall is excessive. The overapplication of nutrients has negative environmental consequences because the nitrogen that is not taken up by the plant will typically volatilize causing N2O emissions, or leach causing water pollution. We present a nonlinear offset program that induces farmers to reduce their nitrogen applications to the level that will be consumed by the plant in a typical year and, as a result, reduce N2O emissions from agriculture. The offset program is nonlinear because of the nonlinear relationship between N2O...
Tipo: Working or Discussion Paper
Palavras-chave: Carbon offsets; Nitrogen fertilizer; Nitrous oxide; Pollution; Uncertainty; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Risk and Uncertainty.
Ano: 2011
URL: http://purl.umn.edu/103914

RECYCLING, INTERNATIONAL TRADE, AND THE DISTRIBUTION OF POLLUTION: THE EFFECT OF INCREASED U.S. PAPER RECYCLING ON U.S. IMPORT DEMAND FOR CANADIAN PAPER
Provedor de dados: 31
Autores: Michael,   Jeffrey A.
The quantity of paper recycled in the U.S. has more than doubled since 1985.  International trade theory predicts that this will lead to reduced imports of paper, and a shift in domestic production toward waste paper intensive outputs (e.g., newsprint) and away from higher grade products such as printing/writing paper.  Import demand elasticities with respect to input prices were estimated for newsprint, printing/writing, and all paper utilizing 20 years of monthly data.  The empirical results confirm the predictions of theory, and illustrate a channel through which recycling may be more beneficial for U.S. industry than the domestic environment.
Tipo: Journal Article
Palavras-chave: Import demand; Paper industry; Pollution; Recycling; Environmental Economics and Policy.
Ano: 1998
URL: http://purl.umn.edu/15086

Does Britain or the United States Have the Right Gasoline Tax?
Provedor de dados: 31
Autores: Parry,   Ian W.H.; Small,   Kenneth A.
This paper develops an analytical framework for assessing the second-best optimal level of gasoline taxation taking into account unpriced pollution, congestion, and accident externalities, and interactions with the broader fiscal system. We provide calculations of the optimal taxes for the US and the UK under a wide variety of parameter scenarios, with the gasoline tax substituting for a distorting tax on labor income. Under our central parameter values, the second-best optimal gasoline tax is $1.01/gal for the US and $1.34/gal for the UK. These values are moderately sensitive to alternative parameter assumptions. The congestion externality is the largest component in both nations, and the higher optimal tax for the UK is due mainly to a higher assumed...
Tipo: Working or Discussion Paper
Palavras-chave: Gasoline tax; Pollution; Congestion; Accidents; Fiscal interactions; Public Economics; H21; H23; R48.
Ano: 2004
URL: http://purl.umn.edu/10461

Multi-Market Trading for Cooperative Resource Management: An Application to Water Pollution and Fisheries
Provedor de dados: 31
Autores: Horan,   Richard D.; Shortle,   James S.
Increasingly, environmental problems are recognized to involve linkages across multiple environmental variables (e.g., pollution and a fishery).  Prior work on managing these complex, linked systems generally focuses on efficiency rather than implementation.  However, implementation is important and will generally involve changing human behaviors within the multiple economic sectors that impact upon the multiple environmental variables.  Tradable permit markets are generally seen as a coordinating mechanism, within a particular regulated sector, that enhances efficiency by incentivizing agents to respond to behavioral choices of others within the sector.  However, prior work stops short of coordinating behaviors across multiple sectors for cases where...
Tipo: Conference Paper or Presentation
Palavras-chave: Permit trading; Fisheries; Pollution; Shapley values; Bioeconomics; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/103591

TARGETING ENVIRONMENTAL PROTECTION IN AGRICULTURE: IPM AND BMPS AS ENVIRONMENTAL PERFORMANCE INDICATORS
Provedor de dados: 31
Autores: Weaver,   Robert D.; Kim,   Taeho.
Nonparametric technical efficiency estimates of potentially polluting input use in soybean and wheat indicate substantial heterogeneity across farms.  This implies large costs would be associated with uniform standards or incentives to regulate these inputs.  While technical efficiency is not observable, indicators of environmentally beneficial practices are found useful predictors.
Tipo: Conference Paper or Presentation
Palavras-chave: Technical efficiency; DEA; Environment performance; Pollution; Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/21576

Towards a General Theory of Environmental Inequality: Social Characteristics of Townships and the Distribution of Pollution in China’s Jiangsu Province
Provedor de dados: 31
Autores: Schoolman,   Ethan D.; Ma,   Chunbo.
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Inequality; Hukou System; Pollution; China; Community/Rural/Urban Development; Health Economics and Policy; Resource /Energy Economics and Policy; D63; J15; J61; Q53; R12; R23.
Ano: 2011
URL: http://purl.umn.edu/117809

Emerging Rights and Risks in the Management of Water Quantity and Water Quality
Provedor de dados: 31
Autores: O'Sullivan,   Dan.
Using transferable water permits has been identified by economists as a necessary tool to efficiently allocate water to its highest valued use. Australian governments have seized the concept and begun to provide mechanisms that separate rights to water from land ownership and allow flexibility to trade the rights. Water trading is slowly taking shape but has been challenged regarding ownership rights and technical applications. Several key studies and projects are now testing a similar process to be used to develop ownership and incentives for diffuse water pollution. This paper analyses how rights to water quantity and water quality are emerging, the policy tools being used, and current challenges for decision makers.
Tipo: Conference Paper or Presentation
Palavras-chave: Water property rights; Pollution; Permit trading; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/31960

Optimal Soil Management and Environmental Policy
Provedor de dados: 31
Autores: Oueslati,   Walid.
This paper studies the effects of environmental policy on the farmer’s soil optimal management. We consider a dynamic economic model of soil erosion where the intensity use of inputs allows the farmer to control soil losses. Therefore, inputs use induces a pollution which is accentuated by the soil fragility. We show, at the steady state, that environmental tax induces a more conservative farmer behavior for soil, but in some cases it can exacerbates pollution. These effects can be moderated when farmer introduces abatement activity.
Tipo: Conference Paper or Presentation
Palavras-chave: Soil erosion; Pollution; Environmental policy; Optimal soil conservation; Abatement activities; Environmental Economics and Policy; Q12; Q24; Q28; Q52; H23.
Ano: 2005
URL: http://purl.umn.edu/24533

Evolution, present status and issues concerning small tank systems in Sri Lanka [Small tanks in Sri Lanka: evolution, present status and issues]
Provedor de dados: 31
Autores: Panabokke,   Christopher Rajendra; Sakthivadivel,   Ramasamy; Dias Weerasinghe,   Asoka.
Tipo: Book
Palavras-chave: Tank irrigation; Small scale systems; History; Irrigation systems; Design; Maintenance; Hydrology; Pollution; Irrigation management; Cultivation; Farming systems; Wells; Crop Production/Industries; Farm Management.
Ano: 2002
URL: http://purl.umn.edu/113505

Poverty and Its Alleviation in Yunnan Province China: Sources, Policies and Solutions
Provedor de dados: 31
Autores: Zhuge,   Ren; Tisdell,   Clement A.
Tipo: Working or Discussion Paper
Palavras-chave: China; Pollution; Environmental Economics and Policy.
Ano: 1996
URL: http://purl.umn.edu/53631

Regulating Stock Externalities Under Uncertainty
Provedor de dados: 31
Autores: Newell,   Richard G.; Pizer,   William A.
Using a simple analytical model incorporating benefits of a stock, costs of adjusting the stock, and uncertainty in costs, we uncover several important principles governing the choice of price-based policies (e.g., taxes) relative to quantity-based policies (e.g., tradable permits) for controlling stock externalities. Applied to the problem of greenhouse gases and climate change, we find that a price-based instrument generates several times the expected net benefits of a quantity instrument. As in Weitzman (1974), the relative slopes of the marginal benefits and costs of controlling the externality continue to be critical determinants of the efficiency of prices relative to quantities, with flatter marginal benefits and steeper marginal costs favoring...
Tipo: Working or Discussion Paper
Palavras-chave: Stock; Externality; Regulation; Policy; Uncertainty; Price; Quantity; Tax; Tradable permit; Pollution; Climate change; Greenhouse Gas; Instrument choice; Risk and Uncertainty; Q28; D81; C61.
Ano: 2000
URL: http://purl.umn.edu/10471

The European Emission Trading Scheme and Renewable Energy Policies: Credible Targets for Incredible Results?
Provedor de dados: 31
Autores: Borghesi,   Simone.
This paper discusses the merits and limits of the recent European energy policy aimed at reducing carbon emissions, devoting particular attention to the European Trading System of carbon permits and to the measures that the European Union has adopted to promote renewable energy sources. From the comparison of past goals and present results, it is argued that more credible targets for carbon emission reductions and renewable shares would probably help the transition towards an alternative energy system and the necessary reduction of greenhouse gases.
Tipo: Working or Discussion Paper
Palavras-chave: Pollution; Sustainable Development; Climate Change; Fossil Fuels; Energy Policy; European Union; European Trading System (ETS); Cap-And-Trade; Renewable Energy Sources; Credibility; Environmental Economics and Policy; L11; Q28; Q38; Q42; Q43; Q48.
Ano: 2010
URL: http://purl.umn.edu/98099

Groundwater policy: issues and alternatives in India
Provedor de dados: 31
Autores: Moench,   Marcus.
This paper reviews policy-related issues discussed in recent conferences that will affect groundwater development and management efforts in South Asia. Emphasis is given to policy issues surrounding emerging groundwater depletion and quality concerns, and issues concerning the equitable development of groundwater for poverty alleviation. The paper outlines the range of services that depend on groundwater resources and outlines the range of services that depend on groundwater resources to provide these services, and the complications stemming from the fragmented approach taken to water management throughout the region. A range of responses dealing with the management of the physical system is identified. In conclusion , the paper discusses institutional...
Tipo: Book
Palavras-chave: Groundwater management; Groundwater extraction; Water policy; Monitoring; Environment; Poverty; Aquifers; Case studies; Salinity; Salt water intrusion; Water quality; Pollution; Water market; Water use efficiency; Crop Production/Industries; Farm Management; Food Security and Poverty.
Ano: 1996
URL: http://purl.umn.edu/113620

Economic Growth and the Environment with Clean and Dirty Consumption
Provedor de dados: 31
Autores: Orecchia,   Carlo; Tessitore,   Maria Elisabetta.
This paper aims to verify the existence of the Environmental Kuznets Curve (EKC) or inverted U-shaped relationship between economic growth and environmental degradation in the context of endogenous growth. An important feature of this study is that the EKC is examined in the presence of pollution as a by product of consumption activities; also, pollution is a stock variable rather than a flow and tends to accumulate over time. In order to highlight the role of consumption on the environment, consumers do not consider directly pollution in the maximization problem and are assumed to choose between two different consumption types, characterized by a different impact on the environment (i.e. dirty and clean consumption). We find that substitution of dirty...
Tipo: Working or Discussion Paper
Palavras-chave: Environmental Kuznets Curve; Economic Growth; Pollution; Consumption; Consumption behaviour; Environmental Economics and Policy; C61; Q56; O44.
Ano: 2011
URL: http://purl.umn.edu/115734

China's Environmental Problems with Particular Attention to its Energy Supply and Air Quality
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Tipo: Working or Discussion Paper
Palavras-chave: China; Pollution; Natural resource conservation; Environmental Economics and Policy.
Ano: 1997
URL: http://purl.umn.edu/53634

Protection of the Environment in Transitional Economies: Strategies and Practices
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Tipo: Working or Discussion Paper
Palavras-chave: Kuznets curve; Pollution; Centrally Planned Economies; Environmental Economics and Policy.
Ano: 1996
URL: http://purl.umn.edu/53594

Pollution and the Efficiency of Urban Growth
Provedor de dados: 31
Autores: Quaas,   Martin F.; Smulders,   Sjak.
We analyze the efficiency of urbanization patterns in a dynamic model of endogenous urban growth with two sectors of production. Production exhibits increasing returns to scale on aggregate. Urban environmental pollution, as a force that discourages agglomeration, is caused by domestic production. We show that cities are too large and too few in number in equilibrium, compared to the efficient urbanization path, if economic growth implies increasing aggregate emissions. If, on the other hand, production becomes cleaner over time (`quality growth') the urbanization path approximates the efficient outcome after finite time.
Tipo: Working or Discussion Paper
Palavras-chave: Cities; Urbanisation; Pollution; Growth; Migration; Sustainable Development; Environmental Economics and Policy; Community/Rural/Urban Development; Q56; R12; O18.
Ano: 2008
URL: http://purl.umn.edu/44225

Imperfect Enforcement of Emissions Trading and Industry Welfare: A Laboratory Investigation
Provedor de dados: 31
Autores: Stranlund,   John K.; Murphy,   James J.; Spraggon,   John M.
This paper uses laboratory experiments to investigate the performance of emission permit markets when compliance is imperfectly enforced. In particular we examine deviations in observed aggregate payoffs and expected penalties from those derived from a model of risk-neutral payoff-maximizing firms. We find that the experimental emissions markets were reasonably efficient at allocating individual emission control choices despite imperfect enforcement and significant noncompliance. However, violations and expected penalties were lower than predicted when these are predicted to be high, but were about the same as predicted values when these values were predicted to be low.  Thus, although a standard model of compliance with emissions trading programs tends to...
Tipo: Working or Discussion Paper
Palavras-chave: Enforcement; Compliance; Emissions trading; Permit markets; Pollution; Laboratory experiments; Environmental Economics and Policy; Public Economics; C91; L51; Q58.
Ano: 2008
URL: http://purl.umn.edu/42124

Are Agricultural Measures for Groundwater Protection Beneficial When Compared to Purification of Polluted Groundwater?
Provedor de dados: 31
Autores: Hasler,   Berit; Lundhede,   Thomas.
The groundwater resource, the drinking water areas and the surface water quality can be protected by measures, e.g. by reductions of pesticide and nutrient applications, conversion of arable land to grasslands or forests etc. The objective of the paper is to estimate the benefits of groundwater protection by the valuation method choice experiments. This method allows for separate estimation and comparison of the different attributes connected to groundwater protection i.e. the effects on drinking water and surface water quality as compared to the benefits from cleaning and treatment of polluted drinking water to make it suitable for drinking water consumption. The results indicate that the benefits are significant, and that the willingness to pay for...
Tipo: Conference Paper or Presentation
Palavras-chave: Groundwater; Pollution; Drinking water; Valuation; Choice experiments; Environmental Economics and Policy; Resource /Energy Economics and Policy; Q25; Q26; Q28; C42; D62.
Ano: 2005
URL: http://purl.umn.edu/24587

Market-Based Approaches to Pollution Control in the Lake Taupo Catchment in New Zealand
Provedor de dados: 31
Autores: Paragahawewa,   Upananda Herath.
There are at least five general reasons why market-based policies fail to address some of the most basic environmental objectives. This study evaluates the available biophysical and economic data against these criteria and concludes that market-based approaches should be employed cautiously in pollution control under the present system and the available technology for farming in the lake area. The most effective market-based instrument to control pollution, in this case, seems to be negative incentives, as the public net cost of farming is extremely higher than the private net benefits. However, the intensity of taxes that would be effective in this regard would definitely results negative net farm benefits. The principle alternative, emission trading,...
Tipo: Conference Paper or Presentation
Palavras-chave: Pollution; Market-based policies; Emission trading; Environmental Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/31975

The Effects of Trade Liberalization of the Environment: An Empirical Study
Provedor de dados: 31
Autores: McCarney,   Geoffrey R.; Adamowicz,   Wiktor L.
We seek to contribute to the emerging economic theory on trade, the environment and development. Using panel data across countries, econometric models are estimated to predict the effects of openness on organic water pollutant (BOD) and carbon dioxide (CO2) emissions. Results indicate that freer trade significantly increases emissions of both pollutants, thus reducing environmental quality. Moreover, the panel nature of the data allows heterogeneity across countries to be controlled, so that comparisons can be made of how different national characteristics influence the environmental impact of freer trade. By testing the effects of democratic versus autocratic governance, it is found that while greater democracy can induce significant reductions in BOD...
Tipo: Conference Paper or Presentation
Palavras-chave: Trade; Environment; Growth; Pollution; Governance; Policy; Environmental Economics and Policy; International Relations/Trade; C23; Q53; Q56.
Ano: 2006
URL: http://purl.umn.edu/25297

Regulatory Responses to Potential Pollutants from Animal Feeding Operations: Opting Out of Costly Permitting Regulations
Provedor de dados: 31
Autores: Centner,   Terence J.; Mullen,   Jeffrey D.
Because of excessive water impairment, federal and state agencies have enacted regulations to reduce water pollution from animal feeding operations.  Many of the regulations are based on numbers of animals rather than the potential of an operator to impair water quality.  To enhance efficiency, critical production indicators and location screening factors might be used to exempt operations that are not significantly impairing water quality.  In this manner, regulations could avoid imposing unnecessary costs on the regulated public and more effectively target monitoring and enforcement resources of the regulatory agency.
Tipo: Journal Article
Palavras-chave: Concentrated animal feeding operations; Pollution; Production indicators; Regulations; Water impairment; K2; K32; Q25; Q28.
Ano: 2004
URL: http://purl.umn.edu/43345

Intraindustry Trade and the Environment: Is There a Selection Effect?
Provedor de dados: 31
Autores: Aralas,   Sarma B.; Hoehn,   John P.
Replaced with revised version of paper 08/06/10.
Tipo: Conference Paper or Presentation
Palavras-chave: Environment; Trade; Monopolistic Competition; Selection effect; Environmental quality; Panel data; OECD; Pollution; Environmental Economics and Policy; International Development; International Relations/Trade; Q56; Q51; Q53; Q58; F12; F18.
Ano: 2010
URL: http://purl.umn.edu/61367

Energy, Environment and the Sustainability of Economic Development in China
Provedor de dados: 31
Autores: Fang,   Xingming; Hu,   Xiaoping; Wang,   H. Holly.
Whether the high economic growth of China is sustainable is the matter of interest to the public, government and academic circle of China and meanwhile it catches the attention of the world because the development of China has been exerting increasing impact on the world economy.  Since the high economic growth of China has been promoted by heavy and chemical industry (HCI) to a great extent, which resulted in high consumption of energy resource, high consumption of mineral resources and high emission of pollutants (the “triple highness”), the sustainability of high economic growth of China depends on a sustainable growth road for China’s HCI and effective control on the “triple highness”.  We find that the contributing factors of the “triple highness” are...
Tipo: Conference Paper or Presentation
Palavras-chave: Economic growth; Energy; Resource; Pollution; International Development; Resource /Energy Economics and Policy; O10; O11.
Ano: 2008
URL: http://purl.umn.edu/6274

IMPROVING NITROGEN MANAGEMENT USING SITE-SPECIFIC TECHNOLOGY IN THE VIRGINIA COASTAL PLAIN
Provedor de dados: 31
Autores: Peng,   Wei; Bosch,   Darrell J.
On a Virginia crop farm, alternative levels of information are evaluated for managing nitrogen applications based on soil properties and yield potential. Application of variable rates of nitrogen based on crop yield potential can increase profitability and reduce nitrogen pollution potential.
Tipo: Conference Paper or Presentation
Palavras-chave: Precision farming; Pollution; Cost; Information; Soil maps; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/21746

Policy Endogeneity and the Effects of Trade on the Environment
Provedor de dados: 31
Autores: Copeland,   Brian R.
This paper reviews recent work on the implications of endogenous policy for the effects of trade on the environment and the sustainability of renewable resource stocks. A recognition that pollution policy is endogenous has had a major impact on the trade and environment literature and has reversed some of the previously established empirical findings. Work on pollution has proceeded faster than work on renewable resources. I suggest some directions for future work in this area.
Tipo: Journal Article
Palavras-chave: Pollution; International trade and the environment; Renewable resources; Globalization; Environmental Economics and Policy; International Relations/Trade.
Ano: 2005
URL: http://purl.umn.edu/10196

Certification as a Rationale for Voluntary Agreements
Provedor de dados: 31
Autores: Gonzalez,   Patrick.
I model the participation of firms in a voluntary agreement as a costly certification process whereby a firm informs the Regulator of its pollution intensity. Without this knowledge, the Regulator imposes the same tax on all firms in a heterogeneous industry, unduly hurting the clean ones with the lowest intensity. Certification allows clean firms to get a tax rebate. It also entails an informational externality as the dispersion of types decreases within the pool of non-participating firms, following an unraveling process. Because participation is a firm’s private decision, there is such a thing as a bad voluntary agreement.
Tipo: Working or Discussion Paper
Palavras-chave: Certification; Voluntary agreements; Pigovian taxes; Pollution; Environmental Economics and Policy; L51; Q53; Q58.
Ano: 2011
URL: http://purl.umn.edu/117827

Economic growth and pollution in the long run: the case of carbon dioxide
Provedor de dados: 31
Autores: Burke,   Paul J.
The concept underpinning the Environmental Kuznets Curve is that economic growth results in reduced pollution in the long run. In this report, an extension of Andreoni and Levinson’s (2001) theoretical model is presented. It demonstrates that an Environmental Kuznets Curve relationship can occur because high incomes allow more adoption of low-emission technologies at higher income levels. Evidence on the determinants of carbon dioxide emissions changes for OECD countries over the period 1961-2004 is presented. It highlights the importance of technology adoption in explaining whether countries have achieved emissions reductions at the same time as experiencing long-run economic growth. However, it is shown that technology adoption is affected by policy...
Tipo: Report
Palavras-chave: Economic growth; Pollution; Carbon dioxide; Environmental Kuznets curve Research; Environmental Economics and Policy.
Ano: 2008
URL: http://purl.umn.edu/94804

Megaspore germination and initial development of Regnellidium diphyllum Lindman (Pteridophyta, Marsileaceae) sporophytes in the presence of cadmium
Provedor de dados: 88
Autores: Wunder,Denise A.; Droste,Annette; Windish,Paulo G.
Regnellidium diphyllum has its distribution restricted to Southern Brazil and adjoining localities in Uruguay and Argentina. Currently it is on the list of threatened species of Rio Grande do Sul. The conversion of wetlands into agricultural areas or soil contamination by the introduction of waste products and fertilizers may compromise the establishment and survival of this species. Among the pollutants are heavy metals, such as cadmium (Cd). Megaspores were germinated in liquid culture medium, with concentrations 0 (control), 0.39; 0.78; 1.56; 3.12; 6.25; 12.5; 25; 50 and 100 mg L-1 of Cd, starting from a standard solution of Titrisol® at 1000 mg L-1. The increase of Cd in the growth medium to 50 mg L-1 resulted in low germinability (58%), and no...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Ecophysiology; Heavy metals; Pollution; Pteridophytes; Reproduction.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042009000100017

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators
Provedor de dados: 91
Autores: Alves,Jailson do C.; Souza,Adailson P. de; Pôrto,Mônica L. A.; Fontes,Renildes L. F.; Arruda,Jandeilson; Marques,Luciano F.
ABSTRACT Studies concerning the tolerance, absorption and distribution of heavy metals in plants are essential for the success of phytoremediation programs. The present study was carried out in order to evaluate the potential of the sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators. The species were grown in nutrient solution containing increasing doses of Pb (0, 50, 100, 200 and 400 mg L-1) during a 30-day exposure period. A completely randomized split-plot design was used, with a 4 x 5 factorial and three replicates. Significant reductions of dry matter of the root, shoot and whole plant were found in the all species under study as a function of the increased Pb doses. Vetiver showed higher tolerance to Pb contamination;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Heavy metal; Phytotoxicity; Tolerance; Phytoremediation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300243

Notes on the hematology of free-living Phrynops geoffroanus (Testudines: Chelidae) in polluted rivers of Southeastern Brazil
Provedor de dados: 103
Autores: Ferronato,Bruno O.; Genoy-Puerto,Alexander; Piña,Carlos I.; Souza,Franco L.; Verdade,Luciano M.; Matushima,Eliana R.
Phrynops geoffroanus (Schweigger, 1812) is the freshwater turtle with the widest geographical distribution in South America. During 2006, physical examination and hematological evaluation were performed on free-ranging turtles from two polluted rivers, the Piracicaba River (n = 51) and its tributary Piracicamirim (n = 42), in southeastern Brazil. Red blood cell and thrombocyte counts, mean corpuscular volume and mean corpuscular hemoglobin levels differed in turtles from the two water courses. Although free-ranging turtles showed ectoparasites and boat propeler lesions, animals apparently had no signs of clinical disease. In spite of our results, further monitoring of the demography and health status of Phrynops geoffroanus in anthropogenically altered...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Hemogram; Lesion; Pollution; Turtle.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400027

Phytase in diets for Nile tilapia in the growth period
Provedor de dados: 96
Autores: Bock,Claudio Luiz; Pezzato,Luiz Edivaldo; Cantelmo,Osmar Angelo; Barros,Margarida Maria.
This research was carried out to compare the effect of phytase on performance, in the incorporation and excretion phosphorus in Nile tilápia. Four diets were used: one standard (contol), composed by 3,200 DE kcal ED/kg of ration and 30.0% CP and supplemented with phosphorus (4.0% of dicalcium phosphate), considering the treatment control, and others three, without phosphorus supplementation, with different phytase levels (1,000, 1,500, and 2,000 uf/kg), with four replication, per a period of 82 days. Circular tanks of fiber glass, with constant flow and aeration were used. The results demonstrated that the use of phytase in diets for fish production can reduce the levels of inorganic phosphorus in the diets and minimizing the impacts caused by phosphorus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Excretion; Fish; Growth; Oreochromis niloticus; Phosphorus; Pollution.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000700001

Heavy metals in equine biological components
Provedor de dados: 96
Autores: Souza,Maria Verônica de; Fontes,Maurício Paulo Ferreira; Fernandes,Raphael Bragança Alves.
The objective of this research was to determine the concentration of heavy metals in the blood (Pb, Ni and Cd), serum (Cu and Zn) and hair (Pb, Ni, Cd, Cu and Zn) of horses raised in non-industrial and industrial areas (with steel mill), and to verify the possibility to use these data as indicators of environmental pollution. The samples were collected during summer and winter, aiming to verify animal contamination related to environment and season of the year. Copper and Zn contents determined in the serum and Cd and Ni contents obtained in the blood indicated no contamination effects of industries. For some animals, contents of Pb in the blood were higher than those considered acceptable for the species, but without relationship with industrialization...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bio-indicators; Environmental monitoring; Environmental quality; Horses; Pollution.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000200002

Impact of dietary manipulation on nutrient flows and greenhouse gas emissions in cattle
Provedor de dados: 96
Autores: Kebreab,Ermias; Strathe,Anders; Fadel,James; Moraes,Luis; France,James.
The growing global demand for meat and particularly in countries such as Brazil is expected to increase intensive animal production. Consequently the main pollutants of interest are nitrogen (N), phosphorus (P) and greenhouse gases (GHG). Nitrogen can be a problem through nitrate leaching to water bodies, ammonia, and nitrous oxide emissions to air. Phosphorus loading in soil from manure application can be the main issue due to the tendency of P to accumulate in soil and leach to groundwater and rivers. The sources of agricultural GHG emissions include methane from enteric fermentation, manure storage and spreading, and nitrous oxide mainly from application of manure on land. Dietary manipulation has proven to be an effective tool to reduce...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Methane; Nitrogen; Phosphorus; Pollution; Ruminants.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300050

Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
Provedor de dados: 63
Autores: Ghiberto,Pablo Javier; Libardi,Paulo Leonel; Brito,Alexsandro dos Santos; Trivelin,Paulo Cezar Ocheuze.
Nitrogen (N) leaching below the crop-rooting zone represents not only a valuable loss of nutrients for the plant, but also a potential pollution source of groundwater. The objective of this work was to quantify leaching losses of native N and that derived from fertilizer in an Oxisol that was cultivated with sugarcane (Saccharum officinarum) during the crop plant cycle. The sugarcane was planted and fertilized with urea in the planting furrow, with 120 kg ha-1 of N. In order to determine the fate of the fertilizer - N, four microplots with 15N enriched fertilizer were installed. Input and output of N at the depth of 0.9 m were quantified from the flux density of water and the N concentration in soil solution. During the evaluation period the rainfall was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp; Sustainability; Solute transport; Environmental quality; Pollution.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100013

Variações espaciais na assembléia de peixes no Rio Paraíba do Sul (Barra Mansa, Barra do Piraí), Rio de Janeiro, Brasil
Provedor de dados: 104
Autores: Araújo,Francisco Gerson; Fichberg,Ilana; Pinto,Benjamin Carvalho Teixeira; Peixoto,Magna Galvão.
The Paraíba do Sul is a major running water system in southeastern Brazil (22º24' -22º26'S; 43º43' -44º16' W), draining one of the most important industrial regions in the country. Because of its location, it has suffered a large amount of alteration due to discharges of urban and industrial effluents with direct influence in the ichthyofauna. The aim of this study is to up-to-date information on fish assemblage structure and its variation in the vicinity of a major industrial effluent outfall at Volta Redonda industrial complex. A standardized fishing sampling program, using seines, casting nets, gill nets and net trays, was carried out from October 1997 to September 1999, at six sites in three zones of the river (upstream, nearby and downstream the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rivers; Fish taxocenose; Pollution; Ichthyofauna; Fish ecology.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200019

Antioxidant capacity in relationship to serum lipid peroxides levels in healthy elderly of Mexico City
Provedor de dados: 38
Autores: Sánchez-Rodríguez,Martha A.; Retana-Ugalde,Raquel; Ruiz-Ramos,Mirna; Mendoza-Núñez,Víctor Manuel.
The aging is one of the factors that cause decrease in the antioxidant capacity. Likewise, it has been proposed that subjects exposed permanently to air pollution develop deficient antioxidant capacity to oxidative stress (OxS). This study aimed to analyze the antioxidant capacity against elevated lipid peroxides in healthy elderly of Mexico City. 105 adults (44 ± 10.8 years) and 126 elderly subjects were studied (68 ± 7.1 years); residents of Mexico City (clinically healthy, non-smokers, non-vitamin supplement takers) who had lived in the city for &gt;10 years. Plasma lipoperoxides (LPO), total antioxidant status (TAS), the activity of red blood cells superoxide dismutase (SOD), and plasma glutathione peroxidase (GPx), were studied in all subjects. LPO...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation to oxidative stress; Total antioxidant status; Elderly people; Pollution; Superoxide dismutase; Glutathione peroxidase.
Ano: 2004
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572004000200007

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper
Provedor de dados: 39
Autores: Cassanego,Mara Betânia Brizola; Goldoni,Angélica; Heldt,Fágner Henrique; Osório,Daniela Montanari Migliavacca; Windisch,Paulo Günter; Droste,Annette.
Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at &gt; 10 mg L-1. Secondary leaves of sporophytes grown in concentrations &gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fern; Heavy metals; Pollution; Reproduction; Species conservation; Wetlands.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004

Does a small forested area contribute to enhance species richness and diversity of fish assemblage at an urban stream? - doi: 10.4025/actascibiolsci.v35i4.16592
Provedor de dados: 3
Autores: Pera, Carolina Costa; Universidade Estadual de Maringá; Zanatta, Naiara; Universidade Estadual de Maringá; Sacramento, Patricia Almeida; Universidade Estadual de Maringá; Cionek, Vivian de Melo; Universidade Estadual de Maringá; Benedito, Evanilde; Universidade Estadual de Maringá.
Conservation Units (CU) aim to contribute to the balance between human and environmental demand, by protecting natural resources and biological communities. In this study we examined the differences in the attributes of the fish community in four stretches of an urban stream, two inside and two outside the CU, without vegetation cover, and tested the hypothesis that the presence of riparian vegetation is positively reflected in the attributes of fish fauna. Five species were caught, distributed into four orders and five families. Attributes like richness, abundance, dominance, Shannon-Wiener diversity, and evenness were estimated and significant differences were detected for continuous stretches considering stream flow direction. The first stretches (URBI...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish fauna; Conservation units; Neotropical streams; Pollution; Urbanization Ecologia Aplicada.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16592

Impact assessment of an effluent discharge on benthic macroinvertebrates in a subtropical river using indexes
Provedor de dados: 3
Autores: Hartmann, Sharonn Martins Gonçalves; Rozário, Hérica; Affonso, Ana Lucia Suriani.
Benthic macroinvertebrates are used as environmental bioindicators in the assessment of water quality in rivers and lakes, due to the sensitivity of some taxa to pollution. The objective of this research was to evaluate the consequences of industrial effluent discharge on the structure of the benthic community present in a river in the subtropical region of Brazil. The organisms were collected at three points of the Coutinho River, in 2013 (September and November) and 2014 (January and March). To characterize the community were calculated density, Shannon diversity index (H´), Pielou equitability (J), taxa richness, Biotic Indices (Biological Monitoring Working Party - BMWP, Average Score Per Taxon - BMWP-ASPT, Family Biotic Index – FBI) and Canonical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotic index; Pollution; Zoobenthos.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45536

Ventana de aplicación de plaguicidas en huertos de arándano (Vaccinium sp.) de la zona de Los Ángeles, Chile
Provedor de dados: 113
Autores: Hetz,Edmundo; Saavedra,Mauricio; Venegas,Alejandro; López,Marco.
The objectives of this work were to establish non-polluting pesticide application windows (VAP), that is the existence and size of appropriate daily periods to apply pesticides, for blueberry (Vaccinium sp.) orchards located in the Los Angeles area (37º28’ S. lat., 72º23’ W long.), Bio-Bio province, Chile; to compare them with the time demands of the annual spraying schedule, the effective work capacity (CET) of the air blast sprayers available in the market, and the area of the orchards. To achieve these objectives a 21-year daily meteorological database that included daily rainfall, wind speed, temperature and relative humidity was probabilistically processed. The results showed that there are enough appropriate days to carry out these applications, even...
Tipo: Journal article
Palavras-chave: Spraying; Appropriate days; Pollution; Probabilities; Pulverización; Días apropiados; Contaminación; Probabilidades.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072004000400006

Characterization of brewery waste water and evaluation of its potential for biogas production
Provedor de dados: 111
Autores: Murunga, Sylvia Injete; Mbuge, Duncan Onyango; Gitau, Ayub Njoroge; Mutwiwa, Urbanus Ndungwa; Wekesa, Ingrid Namae.
The issue of global warming and climate change is strongly receiving public attention and has become a major environmental concern both nationally and internationally. Brewing industries are among the largest consumers of water and the largest source of organic effluent mostly from the brewing, cleaning, and cooling processes which must be treated to allowable levels to reduce environmental pollution. Close to 10 L water is used for every 1 L beer that is brewed, though the amount of water in the final beer is small. A study was undertaken to characterize and assess the variations in the quality of untreated brewery waste water. Samples from different process streams including brewing line, clean in place line and mixing line from two brewing industries in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brewery; Physicochemical characterization; Waste water; Pollution; Biodegradable; Anaerobic digestion.
Ano: 2016
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3759

Benthic foraminifera distribution in high polluted sediments from Niterói Harbor (Guanabara Bay), Rio de Janeiro, Brazil
Provedor de dados: 42
Autores: Vilela,Claudia G.; Batista,Daniele S.; Batista-Neto,José A.; Crapez,Mirian; Mcallister,John J.
Dockyards and harbors are recognized as being important locations where sediment-associated pollutants can accumulate, which constitutes an environmental risk to aquatic life due to potential uptake and accumulation of heavy metals in the biota. The aim of this paper is to assess the concentrations and the effects of some heavy metals in the benthic foraminifera assemblage in Niterói Harbor. Low concentrations in the benthic foraminifera as well as the dominance of indicative species such as Ammonia tepida, Buliminella elegantissima and Bolivina lowmani can be associated with an environment under stress. In addition, the occurrence of test abnormalities among foraminifera may represent a useful biomarker for evaluating long-term environmental impacts in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Benthic foraminifera; Guanabara Bay; Pollution; Heavy-metals.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000100014

Effect of indigo dye effluent on the growth, biomass production and phenotypic plasticity of Scenedesmus quadricauda(Chlorococcales)
Provedor de dados: 42
Autores: CHIA,MATHIAS A.; MUSA,RILWAN I.
The effect of indigo dye effluent on the freshwater microalgaScenedesmus quadricauda ABU12 was investigated under controlled laboratory conditions. The microalga was exposed to different concentrations of the effluent obtained by diluting the dye effluent from 100 to 175 times in bold basal medium (BBM). The growth rate of the microalga decreased as indigo dye effluent concentration increased (p &lt;0.05). The EC50 was found to be 166 dilution factor of the effluent. Chlorophyll a, cell density and dry weight production as biomarkers were negatively affected by high indigo dye effluent concentration, their levels were higher at low effluent concentrations (p &lt;0.05). Changes in coenobia size significantly correlated with the dye effluent concentration. A...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Freshwater; Microalgae; Morphological variation; Pollution; Textile waste.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100419

Mercury in the sea turtle Chelonia mydas (Linnaeus, 1958) from Ceará coast, NE Brazil
Provedor de dados: 42
Autores: Bezerra,Moisés F.; Lacerda,Luiz D.; Costa,Breno G.B.; Lima,Eduardo H.S.M.
Mercury concentrations in carapace fragments of the green turtle Chelonia mydas from the Ceará coast in NE Brazil are reported. Concentrations varied from &lt;0.34 to 856.6 ng.g -1 d.w., and were highest (average of 154.8 ng.g -1 d.w.) in juveniles (n = 22), whereas lowest concentrations (average of 2.5 ng.g -1 d.w.) were observed in adult/sub-adult animals (n = 3). There was a significant negative correlation between animal size and Hg concentration probably due to different diets between juveniles and sub-adults/adults. Carapace fragments, which are non-invasive, non-lethal substrates, may be of importance for monitoring purposes of these generally endangered species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Metals; Marine turtles; Monitoring.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000100012

Diagnostic and prognostic characteristics of phytotoxicity caused by fluoride on Spondias dulcis Forst. F. (Anacardiaceae)
Provedor de dados: 42
Autores: Sant'Anna-Santos,Bruno F.; Azevedo,Aristéa A.; Silva,Luzimar C.; Oliva,Marco A.
The goal of this study was to determine the symptoms and microscopic damage caused by fluoride on Spondias dulcis, a fluoride-sensitive species. The plants were exposed to simulated fog with fluoride (0, 5, 10, 15 and 20 mg L-1) for 20 min daily during four consecutive days. Samples from leaflets without any apparent fluoride injury were collected to microscopic analysis. The percentage of necrosed leaf area was measured, and the level of pollutant in the dry matter from the basal and apical portions of the plant was determined. The necroses began 24 h after the first simulation mainly from the base of the leaflets. A higher level of necrosis was observed at the apical portion of the plants, a region of higher fluoride accumulation. The damage on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leaf anatomy; Bioindicator; Necrosis; Pollution; Symptomatology.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300011

Quantitative and qualitative analysis of contaminating hydrocarbons in the Gulf of Santiago de Cuba by gas chromatography
Provedor de dados: 50
Autores: Mesa Mesa,Liliana; Falcón Hernández,José; Mulet De los Reyes,Alexander; Castellanos González,Juan Ramón.
ABSTRACT The coasts of Cuba are exposed to damage caused by the contamination by petroleum hydrocarbons. The coastal strip of the Gulf of Santiago de Cuba is an example of natural resources deterioration due to this contamination, which appears as one of its main environmental problems. In the present work, using gas chromatography, quantitative and qualitative analysis were performed based on the retention time values and the area under the chromatogram curve, which allowed characterizing the degree of contamination at four points of the bay of Santiago de Cuba: playa La Estrella (P1), “Guillermón Moncada” Port (P2) “Hermanos Díaz” Oil Refinery (P3), “Antonio Maceo” Thermoelectric Power Plant RENTE (P4). Retention times of individual peaks in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Hydrocarbons; Bay; Gas chromatography.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000100091

The Dynamic of some Biochemical Indicators at Species of Medicinal Plants from Areas of Suceava County, Romania, Emerged under the Mining Pollution Influence
Provedor de dados: 52
Autores: Todirascu-Ciornea,Elena; Dumitru,Gabriela.
ABSTRACT It is known the fact that the mining causes huge damages on the environment having negative biologic effects extremely severe on some groups of organisms of the food chain. The pollutants causes major damages at the level of leaves' cuticles, the vegetation reacting through irreversible modifications at the tissue's level and at substances and energy metabolism, like a riposte to the apparition of the stress induced by the ROS, stress that creates real disturbances on physiological and biochemical processes. Considering the fact that, on the one hand, the activity of oxidoreductases is strongly influenced by the presence of the pollutants factors, with direct effect on the oxidative's stress production, and on the other hand that the plants react...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxidative stress; Mint; Plantain; Pollution.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100344

In situ monitoring of mutagenicity of air pollutants in São Paulo City using Tradescantia-SHM bioassay
Provedor de dados: 52
Autores: Ferreira,Maria Izildinha; Rodrigues,Geraldo Stachetti; Domingos,Marisa; Saldiva,Paulo Hilário do N.
The Tradescantia stamen hair mutation assay (Trad-SHM) was employed for assessing the environmental mutagenesis in two areas of São Paulo City. The study sites were defined as follows: 1) Celso Garcia Avenue, an industrial area on the outskirts of the urban center (Belém neighborhood), with an average daily traffic volume of 8,750 vehicles; 2) Doutor Arnaldo Avenue, in downtown area (Pinheiros neighborhood), with a mostly residential and business offices occupation, with an average daily traffic volume of 46,125 vehicles. The negative control (background) site is located in the city of Jaguariúna, 138 km from São Paulo, in an area of low atmospheric pollution. The mutation frequency observed for Belém was similar to the background for clone 4430, whereas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Mutagenesis; Bioassay; Tradescantia.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200017

Effect of Heavy Metals on Liver, Kidney, Gills and Muscles of Cyprinus carpio and Wallago attu inhabited in the Indus
Provedor de dados: 52
Autores: Mahboob,Shahid; Kausar,Shazia; Jabeen,Farhat; Sultana,S.; Sultana,T.; Al-Ghanim,K.A.; Hussain,Bilal; Al-Misned,Fahad; Ahmed,Z.
ABSTRACT: The present study was aimed to evaluate the effect of heavy metals on an important tissue of two fish species Cyprinus carpio and Wallago attu, sampled from the Indus river, Mianwali District, Pakistan. The concentration of selected heavy metals Fe, Cr, Cu, and in gills, muscles, kidney and liver was compared with an International standard of food fish. The overall metal concentrations among different weight categories in C. carpio were in the order of Fe &gt; Cu &gt; Cr &gt;. In W. attu the overall accumulation of these metals were, in order of Fe &gt; Cu &gt; Cr &gt; Pb The order of accumulation of metals in gills and muscle of C. carpio was Fe &gt; Cr &gt; Pb &gt; Cu; kidney and muscles of W. attu was Fe &gt; Cr &gt; Cu &gt; Pb; liver Fe &gt;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: River; Heavy metals; Fish; Weight; Pollution.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100334

Heavy Metals in Garra gotyla , Cyprinus carpio and Cyprinion watsoni from the River Panjkora, District, Lower Dir, Khyber Pakhtunkhwa, Pakistan
Provedor de dados: 52
Autores: Ullah,Sana; Hussain,Zaqhim; Mahboob,Shahid; Al-Ghanim,Khalid.
ABSTRACT This study was conducted in the River Panjkora, Pakistan, in order to assess the level of heavy metals accumulated in the liver, kidneys, gills and muscle tissues of three highly consumed fish species by the local community, Garra gotyla, Cyprinus carpio and Cyprinion watsoni. The heavy metals including manganese (Mn), iron (Fe), chromium (Cr), zinc (Zn), lead (Pb), cadmium (Cd) and nickel (Ni) were determined in the collected fish specimens through an atomic absorption spectrophotometer. Level of heavy metals significantly varied depending upon tissues type and fish species. Cyprinus carpio accumulated highest concentration of heavy metals, followed by Garra gotyla while Cyprinion watsoni accumulated least concentration of heavy metals. All the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: River; Control site; Tissues; Pollution; Heavy Metals.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100702

Alterations on growth and gill morphology of Danio rerio (Pisces, Ciprinidae) exposed to the toxic sediments
Provedor de dados: 52
Autores: Fracácio,Renata; Verani,Nelsy Fenerich; Espíndola,Evaldo Luiz Gaeta; Rocha,Odete; Rigolin-Sá,Odila; Andrade,Cássio Arilson.
The objective of this work was to assess the toxicity of sediment samples from six cascade reservoirs in Tietê river system, in São Paulo State, Brazil, through chronic-partial toxicity bioassays with Danio rerio larvae as test-organisms. Histology of gills and biometric measurements were used to determine the existence of toxicity problems. The alterations on gill morphology here detected were considered of first stage (hyperplasia, lamellar junction and excess of mucous cells) in the first reservoirs and very slight in the last ones. The biometric analysis pointed to inadequate conditions for the growth of the test-organisms when exposed to the sediment of the rivers and upstream reservoirs and also indicated an improvement of environmental conditions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gill morphology; Sediment toxicity; Danio rerio; Tietê reservoirs; Pollution.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400023

The lysosomal stability as a biomarker for the determination of pollution in aquatic environments
Provedor de dados: 52
Autores: Nazar,Maria Loreto; Rodrigues,Luiz Erlon Araujo; Nascimento,Iracema.
This work studied the effects caused by five different formulae of gasoline on the stability of the lysosomes isolated from the liver of the tilapia fish (Oreochromis niloticus). The functional integrity of the lysosomal membranes was evaluated via the acid phosphatase activity. The results showed that there were significant changes in the stability of the lysosomes exposed to the presence of the hydrocarbons in the environment. Therefore, considering the method's simplicity, the sensitivity of the responses and its low cost the assessment of the lysosomal activity could be an important tool for the study of the effects of pollution in the aquatic environments.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biomarkers; Acid phosphatase; Lysosomes; Aquatic environments; Pollution.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500025

Distribution and abundance of Chironomidae (Diptera, Insecta) in an impacted watershed in South-east Brazil
Provedor de dados: 57
Autores: MARQUES,M. M. G. S. M.; BARBOSA,F. A. R.; CALLISTO,M.
Patterns of abundance and distribution of chironomid midges (Diptera, Chironomidae) in the middle Rio Doce basin were analysed. Human activities (mining, steel processing, and Eucalyptus spp. forestry) contribute to environmental degradation and low water quality in this watershed. Physical and chemical water traits (dissolved oxygen, pH, total alkalinity, electric conductivity, phosphorus and nitrogen concentrations) of 20 sampling points were used in a Principal Component Analysis (PCA) to establish the best and worst water quality. Sampling points recorded as the most polluted showed low genus richness of Chironomidae, less than five genera from the total 23, and dominance of the genus Chironomus, a bioindicator of environmental stress. Following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chironomus; Bioindicators; Pollution.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081999000400004

The ichthyofauna of the marginal lagoons of the Sorocaba River, SP, Brazil: composition, abundance and effect of the anthropogenic actions
Provedor de dados: 57
Autores: SMITH,W. S.; BARRELLA,W.
The marginal lagoons of the Sorocaba River fulfil important functions in their lotic ecosystems and for its fish communities, providing shelter, food, and area for fish early stages of development. The lagoons are also an escape from the river pollution since the physical-chemical characteristics of their water are more stable than the river water. Nevertheless, these lagoons are under a series of impacts that contribute to reduce their diversity and stability such as water pollution, deforesting and river dumping. These impacts decrease habitat availability, and modify the fish community structure by reducing the number of species in the Sorocaba River, the floodplains and its marginal lagoons.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish community; Marginal lagoons; Diversity; Pollution; Sorocaba River.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400012

Preliminary assessment of heavy metal levels in Mytella falcata (Bivalvia, Mytilidae) from Bacanga River estuary, São Luis, State of Maranhão, Northeastern Brazil
Provedor de dados: 57
Autores: CARVALHO,G. P. de; CAVALCANTE,P. R. S.; CASTRO,A. C. L. de; ROJAS,M. O. A. I.
The concentrations of Cu, Zn, Pb, and Cd were determined in the mussel Mytella falcata from the Bacanga River estuary, in order to evaluate the potential role of domestic effluents released "in natura" on the quality of the estuarine environment with consequences to shellfish resources. Cu concentrations ranged from 5.2 mg.g-1 to 13.1 mg.g-1, while Zn concentrations ranged from 49.1 mg.g-1 to 76.3 mg.g-1. Pb and Cd showed concentrations lower than 2 mg.g-1. The results showed low concentrations of Cu, Pb and Cd in the filter-feeding Mytella falcata in the study area in comparison with the maximum values stablished to foods by the Brazilian Government (Decree Law Nº 55,871). Finally, Zn presented slightly higher values than the maximum ones stablished by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metals; Bivalves; Mytella falcata; Estuary; Pollution.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000100003

Influence of season and pollution on the antioxidant defenses of the cichlid fish acará (Geophagus brasiliensis)
Provedor de dados: 56
Autores: Wilhelm Filho,D.; Torres,M.A.; Tribess,T.B.; Pedrosa,R.C.; Soares,C.H.L.
The livers of Geophagus brasiliensis collected from both a non-polluted site and a polluted site were analyzed for different antioxidant defenses, O2 consumption, thiobarbituric acid-reactive substance (TBARS) levels, and histological damage. Compared to controls (116.6 ± 26.1 nmol g-1), TBARS levels were enhanced at the polluted site (284.2 ± 25.6 nmol g-1), as also was oxygen consumption (86.6 ± 11.3 and 128.5 ± 9.8 µmol O2 min-1 g-1, respectively). With respect to enzymatic antioxidants, increased catalase activities (8.7 ± 1.3 and 29.2 ± 2.4 mmol min-1 g-1, respectively), unchanged superoxide dismutase activities (767.2 ± 113.3 and 563.3 ± 70.2 U g-1, respectively), and diminished glutathione S-transferase activities (29.0 ± 3.2 and 14.9 ± 3.2 µmol...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oxyradicals; Antioxidant defenses; Fish; Acará; Season; Pollution; Adaptation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000600004

Ecophysiological adaptation and metal accumulation in water hyacinth from two tropical rivers
Provedor de dados: 61
Autores: Vitória,Angela P.; Lage-Pinto,Frederico; Campaneli,Leonardo B.; Almeida,Marcelo G.; Souza,Cristina M. M.; Rezende,Carlos E.; Azevedo,Ricardo A.; Oliveira,Jurandi G.
The ecophysiological adaptations of water hyacinth (metal hyperaccumulator) under adverse environmental conditions are not yet clearly elucidated. This work evaluated photosynthetic pigments and chlorophyll a fluorescence in water hyacinth plants sampled in different regions (upper, middle and lower) of Paraíba do Sul river (PSR) and Imbé river, Brazil. Additionally Mn, Fe, Zn, Cu, Cr, Pb and Ni were quantified on the shoots and roots. Roots were the preferential site of metal accumulation. Cromium was not detected in the shoots. Iron and Mn were the elements detected in higher concentrations in all samples. Zinc and Cu were detected in higher concentrations in roots of plants from middle and upper PSR, sites of higher anthropogenic activity. The highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Paraíba do Sul river; Energy dissipation; Photosynthetic pigments; Nonphotochemical quenchings.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000100006

The effect of lead on the phytochemistry of Tithonia diversifolia exposed to roadside automotive pollution or grown in pots of Pb-supplemented soil
Provedor de dados: 61
Autores: Olivares,Elizabeth.
Tithonia diversifolia, a ruderal weedy species utilized in agroforestry, is widely distributed in the tropics, often being found in wasteland, margins of polluted city rivers and roadsides. The objective of this study was to compare plants sampled at a light and heavy traffic roadside for metal concentration and foliar compounds which may be related to senescence and/or detoxification of metals. The field survey was followed by an experiment in pots of Pb-acetate-supplemented soil to verify if the same response is obtained under controlled conditions with regard to Pb. The concentration of Pb in leaves and roots of plants sampled at a heavy traffic roadside was higher than in samples from a light traffic site. The content of Cr, Al, Fe, Cu and Ni was also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Metals; Mexican sunflower; Phenols; Pollution; Weeds.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000300004

Honey as a bioindicator of arsenic contamination due to volcanic and mining activities in Chile
Provedor de dados: 117
Autores: Bastías,José M; Jambon,Philippe; Muñoz,Ociel; Manquián,Nimia; Bahamonde,Patricia; Neira,Miguel.
The content of heavy metals in honey is indicative of natural or anthropogenic pollution and has therefore been proposed as a feasible bioindicator for arsenic contamination in different regions of Chile. Total arsenic (t-As) and inorganic As (i-As) concentrations were determined in 227 samples of honey harvested during the years 2007, 2008, and 2009 in the areas of San Pedro de Atacama, Atacama, Chiloé, and Futaleufú, with the last town located 156 km from the Chaitén Volcano (latest eruption in 2008). These analyses were conducted using an atomic absorption spectrophotometer coupled with a hydride generator. In the honey samples, the concentrations of t-As ranged from 2.2 to 171.9 &amp;#956;g kg-1, and the i-As concentrations ranged from none detected...
Tipo: Journal article
Palavras-chave: Honey; Bioindicator; Total arsenic; Inorganic arsenic; Pollution.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200010

Environmental risk factors related to the development of canine non-Hodgkin's lymphoma
Provedor de dados: 65
Autores: Zanini,Danielle Almeida; Kimura,Katia Cristina; Nishiya,Adriana Tomoko; Ubukata,Rodrigo; Leandro,Rafael Magdanelo; Brito,Claudia Prado de; Trombetti,Márcia; Lagoa,Ana Carolina; Macedo,Thais Rodrigues; Rodrigues,Lucas Campos de Sá; Rosendo,Janaína Aparecida da Silva; Arndt,Helen Lyrio; Dias,Ricardo Augusto; Dagli,Maria Lúcia Zaidan.
This research aimed to investigate the possible risk factors associated with the development of canine non-Hodgkin's lymphoma. Owners of 83 dogs with non-Hodgkin's lymphoma and of 84 healthy dogs answered an epidemiological questionnaire. Dogs who lived outside of the house and within 100 meters of busy streets or avenues (defined as more than 50 vehicles per minute) had a higher risk for developing the disease (OR: 3.1, 95% CI: 1.4-6.9, P=0.005). These results suggest that air pollution derived from vehicle traffic may be associated with the development of canine non-Hodgkin's lymphoma.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollution; Epidemiologic questionnaire; Environmental factors; Environmental tobacco smoke.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000700025

Zeolites in poultry and swine production
Provedor de dados: 65
Autores: Schneider,Aline Félix; Zimmermann,Otavio Fernando; Gewehr,Clóvis Eliseu.
ABSTRACT: Zeolites are minerals that have intriguing properties such as water absorption, ion adsorption and cation exchange capacity. There are approximately 80 species of natural zeolites recognized and hundreds of artificial zeolites, which have been researched in several fields. Due to their chemical characteristics, zeolites have great potential for use in animal production, especially in poultry and swine farms, as food additives, litter amendment and treatment of residues, with direct and indirect effects on performance, yield and quality of carcass, ambience of farm sheds and reduction of environmental pollution.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Moisture; Pollution; Poultry; Swine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000800652