Consulta: subjectFacets:"Surface water"
Registros recuperados: 40
Data/hora: 06/06/2024 01:32:37

Cytotoxic and genotoxic potential of surface water from the Pitimbu river, northeastern/RN Brazil
Provedor de dados: Genetics and Molecular Biology
Autores: Egito,Lucila Carmem Monte; Medeiros,Maria das Graças; Medeiros,Silvia Regina Batistuzzo de; Agnez-Lima,Lucymara Fassarella.
In this study, the onion (Allium cepa) root test was used to evaluate the genotoxicity of the Pitimbu River (Natal city, Brazil) surface water. The water was collected at five sampling sites along the river and one sample was obtained after the treatment (flocculation, chlorination and pH correction) of the river water for human consumption. All raw river water samples increased the frequency of chromosomal abnormalities and/or micronuclei and two of the water samples produced alterations in the mitotic index of the root cells. Two of the water samples also altered root growth and two produced morphological modifications in the A. cepa roots. Water collected from a site near an industrial area was the most consistently toxic and genotoxic of the samples....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allium cepa; Micronucleus; Cytotoxicity; Genotoxicity; Surface water.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300023

Modelo PestLCI: parametrização para os cenários brasileiros de produção agrícola.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: BARIZON, R. R. M.; MATSUURA, M. I. da S. F.; SCACHETTI, M. T.; SILVA, G. B. S. da; COSTA, M. P.; GAROFALO; LANES, V. F. de; PICOLI, G.; PIGHINELLI, A. L. M. T.; MORANDI, M. A. B.
Resumo: Diversas metodologias têm sido utilizadas para avaliar os impactos dos pesticidas utilizados na agricultura. O PestLCI Consensus v.1.0, ferramenta apresentada neste trabalho, traz contribuições para a estimativa de emissões de pesticidas em processos agrícolas, para a elaboração de inventários para estudos de avaliação do ciclo de vida (ACV), de gestão ambiental, que tem sido aprimorada para incorporar os potenciais impactos desses compostos em sistemas de produção agropecuários. Além da apresentação do PestLCI, este trabalho objetiva também parametrizar cenários de produção agrícola relevantes para o Brasil. Com isso, espera-se o aprimoramento dos estudos de ACV que abordem os possíveis impactos dos pesticidas sobre a saúde humana e meio ambiente.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Avaliação do ciclo de vida; Agrotóxico; Pesticida; Impacto Ambiental; Águas Superficiais; Águas Subterrâneas; Solo; Ar; Pesticides; Environmental impact; Molecular dynamics; Groundwater; Surface water; Life cycle assessment; Air.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1134598

Barraginhas: realimentação de aquíferos.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: BARROS, L. C. de; RIBEIRO, P. E. de A.
As barraginhas são pequenas bacias escavadas no solo em formato de prato, meia-lua e de arco de flecha, com diâmetro médio de 16 m e profundidade média de 1,2 m. São construídas dispersas nas pastagens, lavouras (no final das curvas de nível) e nas margens de estradas, para captar água de enxurradas, controlando a erosão e conservando a água no subsolo. As barraginhas não devem ser construídas em cursos de água perenes, nas áreas de proteção permanente (APPs), no interior das voçorocas e das grotas e em terrenos com inclinação acima de 12%. Um sistema de Barraginhas construídas em uma microbacia promove a elevação do lençol freático e o umedecimento das baixadas, proporcionando segurança hídrica para lavouras, mesmo em regiões semiáridas. Com a água...
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Barraginha; Captação de água de chuva; Barragem; Açude; Construção Rural; Manejo de Água; Manejo do Solo; Water harvesting; Water reservoirs; Surface water; Rain; Rainfed farming.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1099353

PestLCI Model: parameterization for scenarios of Brazilian agricultural production.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: BARIZON, R. R. M.; MATSUURA, M. I. da S. F.; SCACHETTI, M. T.; SILVA, G. B. S. da; COSTA, M. P.; GAROFALO; LANES, V. F. de; PICOLI, G.; PIGHINELLI, A. L. M. T.; MORANDI, M. A. B.
Abstract: Several methodologies have been proposed to assess the impact of pesticides applied to agricultural crops. The PestLCI Consensus v.1.0 tool presented herein helps estimating pesticide ewwmissions in agricultural processes to prepare inventories for life cycle assessment (LCA) studies. This important environmental management tool was improved to enable the incorporation of the potential impacts of these compounds on agricultural production systems. In addition, the present work also aimed to parameterize relevant agricultural production scenarios for Brazil. With this, it is expected to lead to the improvement of LCA studies that address the possible impacts of pesticides on human health and the environment.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Avaliação do ciclo de vida; Agrotóxico; Pesticida; Impacto Ambiental; Águas Superficiais; Águas Subterrâneas; Solo; Ar; Pesticides; Environmental impact; Molecular dynamics; Groundwater; Surface water; Life cycle assessment; Air.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137347

Influence of environmental and anthropogenic factors on the composition, concentration and spatial distribution of microplastics: A case study of the Bay of Brest (Brittany, France)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Frere, L.; Paul-pont, I.; Rinnert, Emmanuel; Petton, Sebastien; Jaffre, J; Bihannic, Isabelle; Soudant, P.; Lambert, C.; Huvet, Arnaud.
The concentration and spatial distribution of microplastics in the Bay of Brest (Brittany, France) was investigated in two surveys. Surface water and sediment were sampled at nine locations in areas characterized by contrasting anthropic pressures, riverine influences or water mixing. Microplastics were categorized by their polymer type and size class. Microplastic contamination in surface water and sediment was dominated by polyethylene fragments (PE, 53–67%) followed by polypropylene (PP, 16–30%) and polystyrene (PS, 16–17%) microparticles. The presence of buoyant microplastics (PE, PP and PS) in sediment suggests the existence of physical and/or biological processes leading to vertical transfer of lightweight microplastics in the bay. In sediment (upper...
Tipo: Text
Palavras-chave: Microplastic; Coastal ecosystem; Surface water; Sediment; Raman spectroscopy; Hydrodynamic; Dispersal particle modelling.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00379/48994/51083.pdf

Air-sea CO2 flux variability in frontal regions of the Southern Ocean from CARbon Interface OCean Atmosphere drifters
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boutin, Jacqueline; Merlivat, L.; Henocq, C.; Martin, Nicolas; Sallee, Jean-baptiste.
Nine CARbon Interface OCean Atmosphere (CARIOCA) drifters were deployed in the Southern Ocean (south of the subtropical front, STF) between 2001 and 2006. They recorded 65 months of measurements in all seasons between 57 degrees S and 40 degrees S. Hydrological fronts detected by altimetry indicate that one buoy explored the polar zone (PZ) of the Atlantic Ocean and the western Indian Ocean; the remaining buoys explored the northern and southern parts of the subantarctic zone (SAZ) from the mid-Indian Ocean (73 degrees E) to the eastern Pacific Ocean (112 degrees W). The air-sea CO2 fluxes along the buoy trajectories are primarily driven by the spatial variability of the fugacity of CO2 in seawater, fCO(2): in the SAZ, they vary between -1.1 and -4.2 mol...
Tipo: Text
Palavras-chave: Antarctic circumpolar current; Northwestern mediterranean sea; Atlantic sector; Surface water; Gas exchange; Polar front; Temperature; Seawater; Transport.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00204/31483/29880.pdf

Climatological distributions of pH, pCO(2), total CO2, alkalinity, and CaCO3 saturation in the global surface ocean, and temporal changes at selected locations
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Takahashi, Taro; Sutherland, S. C.; Chipman, D. W.; Goddard, J. G.; Ho, Cheng; Newberger, Timothy; Sweeney, Colm; Munro, D. R.
Climatological mean monthly distributions of pH in the total H+ scale, total CO2 concentration (TCO2), and the degree of CaCO3 saturation for the global surface ocean waters (excluding coastal areas) are calculated using a data set for pCO(2), alkalinity and nutrient concentrations in surface waters (depths &lt;50 m), which is built upon the GLODAP, CARINA and LDEO databases. The mutual consistency among these measured parameters is demonstrated using the inorganic carbon chemistry model with the dissociation constants for carbonic acid by Lueker et al. (2000) and for boric acid by Dickson (1990). Linear potential alkalinity-salinity relationships are established for 24 regions of the global ocean. The mean monthly distributions of pH and carbon chemistry...
Tipo: Text
Palavras-chave: Global ocean; Surface water; PH; Carbonate chemistry; Climatology; Seasonal and decadal change.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00290/40098/38796.pdf

Campylobacter armoricus sp. nov., a novel member of the Campylobacter lari group isolated from surface water and stools from humans with enteric infection
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Boukerb, Amine M.; Penny, Christian; Serghine, Joelle; Walczak, Cécile; Cauchie, Henry-michel; Miller, William G.; Losch, Serge; Ragimbeau, Catherine; Mossong, Joël; Mégraud, Francis; Lehours, Philippe; Bénéjat, Lucie; Gourmelon, Michele.
During a study on the prevalence and diversity of members of the genus Campylobacter in a shellfish-harvesting area and its catchment in Brittany, France, six urease-positive isolates of members of the genus Campylobacter were recovered from surface water samples, as well as three isolates from stools of humans displaying enteric infection in the same period. These strains were initially identified as members of the Campylobacter lari group by MALDI-TOF mass spectrometry and placed into a distinct group in the genus Campylobacter, following atpA gene sequence analysis based on whole-genome sequencing data. This taxonomic position was confirmed by phylogenetic analysis of the 16S rRNA, rpoB and hsp60 (groEL) loci, and an analysis of the core genome that...
Tipo: Text
Palavras-chave: Campylobacter; Novel species; Surface water; Coastal catchment; Human gastroenteritis; C. lari group; Whole genorne sequence.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00591/70346/69558.pdf

Seasonal and inter-annual variability in properties of surface water off Santander, Bay of Biscay, 1991-1995
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lavin, A; Valdes, L; Gil, J; Moral, M.
The annual cycle of temperature, salinity and nutrients of surface waters (up to 100 m depth) was studied from June 1991 to December 1995 in a cross-shelf section over the continental shelf waters off Santander (southern Bay of Biscay). The time series showed that the temperature followed the expected seasonal warming and cooling pattern, which determines a seasonal process of stratification and mixing of the water column. The stratification period occurs annually between May and October in a layer of about 50 m depth from the neritic station beyond to the shelf-break. In the period between November and April the water column remained mixed. During spring and summer low salinity values were found in the surface due to continental runoff and advection from...
Tipo: Text
Palavras-chave: Golfe de Gascogne; Hydrologie; Eau superficielle; Série chronologique; Bay of Biscay; Hydrographical conditions; Surface water; Time series.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00326/43678/43194.pdf

An in situ intercomparison exercise on passive samplers for monitoring metals, polycyclic aromatic hydrocarbons and pesticides in surface waters
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Miege, C.; Mazzella, N.; Schiavone, S.; Dabrin, A.; Berho, C.; Ghestem, J. -p.; Gonzalez, C.; Gonzalez, Jean-louis; Lalere, B.; Lardy-fontan, S.; Lepot, B.; Munaron, Dominique; Tixier, Celine; Togola, A.; Coquery, M.
Tipo: Text
Palavras-chave: Intercomparison exercise; Marine Strategy Framework Directive (MSFD); Metal; Passive sampling; Pesticide; Polar organic chemical integrative sampler (POCIS); Polycyclic aromatic hydrocarbon (PAH); Priority chemical; Surface water; Water Framework Directive (WFD).
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00077/18853/16597.pdf

Urbanization and Waterborne Pathogen Emergence in Low-Income Countries: Where and How to Conduct Surveys?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bastaraud, Alexandra; Cecchi, Philippe; Handschumacher, Pascal; Altmann, Mathias; Jambou, Ronan.
A major forthcoming sanitary issue concerns the apparition and spreading of drug-resistant microorganisms, potentially threatening millions of humans. In low-income countries, polluted urban runoff and open sewage channels are major sources of microbes. These microbes join natural microbial communities in aquatic ecosystems already impacted by various chemicals, including antibiotics. These composite microbial communities must adapt to survive in such hostile conditions, sometimes promoting the selection of antibiotic-resistant microbial strains by gene transfer. The low probability of exchanges between planktonic microorganisms within the water column may be significantly improved if their contact was facilitated by particular meeting places. This could...
Tipo: Text
Palavras-chave: Waterborne diseases; Drug resistance; Urbanization; Surface water; Plastics; Metagenomic.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00601/71328/69758.pdf

Presencia de hidrocarburos del petróleo disueltos y dispersos en el área de Monteverde, noviembre del 2006
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Rodríguez, A.
El presente estudio tiene la finalidad de determinar y evaluar en forma objetiva y sistemática, la influencia de la marea (Flujo y Reflujo), sobre la concentración de hidrocarburos disueltos y dispersos, que es un parámetro de índice de contaminación sobre la salud de un ecosistema marino costero.
Tipo: Journal Contribution
Palavras-chave: Petroleum hydrocarbons; Hydrocarbon analysis; Oil pollution; Surface water; Surface water; Http://aims.fao.org/aos/agrovoc/c_25317.
Ano: 2007
URL: http://hdl.handle.net/1834/2376

Seasonal variation in surface temperature and salinity around Lagos harbour, Nigeria
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Oyewo, E.O.; Ajao, E.A.; Orekoya, T.
Continuous monitoring of Sea and Harbour (Lagoon) Surface temperature and salinity at two stations has been carried out from 1978 to 1981.  This paper presents the findings for the period and relates it to the prevailing meteorological regimes.   The pattern of sea surface temperature at Victoria beach in the study period shows a clearly defined mean maximum temperature of 29.34oC in April, and clearly defined mean minimum temperature of 25.63 in August.  Depending on the year, there may be a less clearly defined mean maximum and minimum temperature in October/November and in January respectively.  The pattern of surface temperature in the Harbour station is basically similar.  The salinity cycle especially in the Harbour was found to be critically...
Tipo: Report
Palavras-chave: Oceanography; Harbours; Water surface temperature; Water surface salinity; Oceanography; Salinity; Surface water.
Ano: 1982
URL: http://hdl.handle.net/1834/1270

Estudio de corrientes marinas en la Bahía Chile (Bahía Discovery)
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Medina, F.
Velocidades superficiales de las aguas fueron medidas en la Bahía chile en la Isla Greenwich, como parte de la Segunda Expedición Ecuatoriana a la Antártida, durante el verano del hemisferio sur, en 1990. Masas de hielo a la deriva desprendidas desde la costa fueron usadas como trazadores lagrangianos. Son comparadas corrientes superficiales y observaciones de vientos. La circulación superficial es determinada por los vientos cuando la velocidad de estos últimos exceden los 6 m/s. Los valores máximos y la dirección de la deriva superficial dependen exclusivamente del campo de viento prevaleciente. La velocidad de la corriente puede alcanzar valores de hasta 40 cm/s.
Tipo: Journal Contribution
Palavras-chave: Surface water; Ice drift; Surface currents; Surface drifters; Polar waters; Surface circulation; Surface water.
Ano: 1990
URL: http://hdl.handle.net/1834/3727

Características físico-químicas de las aguas del Paso Drake durante el verano 1988
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Allauca, S.; Valencia Trejo, M.
Un análisis de parámetros físicos y químicos se realizó en el Paso Drake en base a datos obtenidos durante el trayecto del BAE ORION hacia y desde la Península Antártica. La investigación efectuada en esta área forma parte de la Primera Expedición Ecuatoriana a la Antártica, realizada durante el verano 1988. Los datos de temperatura medidos con probetas de XBT, proporcionaron una clara visión de la estructura térmica de cada sección hasta los 500 metros. Se determinaron las posiciones de los diferentes Frentes y Zonas tanto por las condiciones subsuperficiales como por sus expresiones superficiales. La presencia de un anillo o masa de agua subsuperficial relativamente fría dentro de la Zona del Frente Polar permite pensar que corresponde a Agua Superficial...
Tipo: Journal Contribution
Palavras-chave: Chemical oceanography; Surface water; Surface temperature; Air temperature; Salinity; Nutrients (mineral); Polar fronts; Chemical oceanography; Surface water; Air temperature; Salinity; Http://aims.fao.org/aos/agrovoc/c_1516; Http://aims.fao.org/aos/agrovoc/c_25317; Http://aims.fao.org/aos/agrovoc/c_230; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 1989
URL: http://hdl.handle.net/1834/3874

Estudio hidroquímico en las aguas del Estrecho Bransfield, durante el verano austral 1998
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Burgos, L.
Durante los meses del verano austral (Nov. 1997-feb.1998) se realizó la VII Expedición Ecuatoriana a la Antártida a bordo del B/I ORION del Instituto Oceanográfico de la Armada. del 24 al 27 de enero/98, se realizaron 14 estaciones oceanográficas en el interior del Estrecho Bransfield donde además de varios parámetros físicos, meteorológicos y biológicos se estudiaron parámetros químicos como micronutrientes y oxígeno disuelto hasta una profundidad de 500 m. Se exponen los criterios y resultados obtenido de la distribución superficial y subsuperficial de los nutrientes y oxígeno disueltos. Se describen los diagramas T/S de las masas de aguas identificadas y su composición química. Las aguas superficiales del interior del Estrecho Bransfield se presentaron...
Tipo: Journal Contribution
Palavras-chave: Chemical composition; Dissolved oxygen; Surface water; Ground water; Research vessels; Ground water; Chemical composition; Dissolved oxygen; Surface water.
Ano: 1998
URL: http://hdl.handle.net/1834/3849

Nutrientes en las aguas superficiales y subsuperficiales en el área frente al Ecuador
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Okuda, T.; Valencia, M.; Trejos de Suescum, R.
En este trabajo se analizaron las distribuciones de los nutrientes tales como fosfato y nitrato en dicha área, en base de los datos obtenidos en los cruceros oceanográficos realizados por el Instituto Oceanográfico de la Armada del Ecuador, en los años correspondientes entre 1975-1980. En general las concentraciones de fosfato y nitrato en la capa superior de la termoclina son muy bajas, luego aumentan con la profundidad. Las concentraciones de los nutrientes en las masas de agua en el área de estudio se encuentran considerablemente diferentes entre ellas, dependiendo del origen de su formación y el antecedente afectado por las actividades biológicas, tales como fotosíntesis y descomposición orgánica. Las aguas superficiales (Agua Tropicales Superficiales,...
Tipo: Journal Contribution
Palavras-chave: Nutrients (mineral); Surface water; Surface water; Http://aims.fao.org/aos/agrovoc/c_25317.
Ano: 1983
URL: http://hdl.handle.net/1834/2095

Distribution of chlorinated pesticides in surface water and fish of El Temsah and Bitter Lakes, Suez Canal
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Said, T.O.; Hamed, M.A.
The potential effect of chlorinated pesticides pollutants carried by El Temsah and Bitter Lakes of the Suez Canal was investigated during four seasons of 2003. The results indicate the presence of total DDTs, total cyclodienes and total Hexachlorocyclohexane (HCHs) in surface water with ranges; 2.76-13.88 ng/l, 3.99-16.39 ng/l, and 0.39-1.25 ng/l, respectively. Total DDTs concentrations were ranged from 161-3100 ng/g (wet weight) with an average of 1087 ng/g (wet weight), while total HCHs concentrations were ranged from 30-1145 ng/g (wet weight) with an average of 316 ng/g (wet weight) recorded in three fish species; Lutjanus sp., R. haffara and S. rivulatus of the investigated area. Concentrations of chlorinated pesticides recorded in both of water and...
Tipo: Journal Contribution
Palavras-chave: Pesticides; Surface water; El Temsah; Bitter lakes; Suez Canal Accumulation Fish meal Wastes Water masses Fish meal Wastes http://aims.fao.org/aos/agrovoc/c_2925 http://aims.fao.org/aos/agrovoc/c_8307.
Ano: 2005
URL: http://hdl.handle.net/1834/1060

Qualité bactériologique des eaux de surface de la rivière Banco, Abidjan, Côte d'Ivoire.
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Adingra, A.A.; Sako, A.; Kouassi, A.M.
Les eaux de surface de la rivière Banco contiennent de fortes densités de bactéries témoins de contamination fécale et de germes mésophiles. L'origine de cette pollution est beaucoup plus humaine; ce qui constitue un danger potentiel les principaux utilisateurs. Compte tenu des multiples utilisations de la rivière Banco, il est important pour les autorités locales d'entreprendre des campagnes de sensibilisation auprès de tous les utilisateurs.
Tipo: Journal Contribution
Palavras-chave: Water quality; Surface water.
Ano: 2010
URL: http://hdl.handle.net/1834/5774

Rapid generation advancement in chickpea
Provedor de dados: Open Acess Agriculture Research Repository
Autores: Gaur, P.M.
Palavras-chave: Purification; Chickpeas; Genotypes; Photoperiodicity; Cropping systems; Latitude; Segregation; Altitude; Reproductive stage; Surface water.
Ano: 2007
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3292

Fytohydrobiologisch onderzoek van oppervlaktewaters in Vlaanderen: 5. De afgesneden Scheldemeanders: het Zonneputje, de Spanjaard, de Van-Looy-put, de Bruwee (bij Gent)
Provedor de dados: Open Marine Archive
Autores: De Maeseneer, M.; Gogaert, C.; Coppejans, E.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrobiology; Surface water; Belgium.
Ano: 1989
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7695

Management of private tubewells in a conjunctive use environment: a case study in the Mananwala Distributary Command Area, Punjab, Pakistan
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Malik,   Saleem M.; Strosser,   Pierre.
This paper analyzes the tubewell data collected by IIMI-Pakistan over a period of 4 years. While the main emphasis remains on the operation of private tubewells, public tubewells and canal water supplies are included in the analyses to give a more comprehensive picture of the conjunctive use environment, a characteristic of most of the irrigated areas of the Punjab, Pakistan.
Tipo: Working or Discussion Paper
Palavras-chave: Irrigation management; Irrigated farming; Tube well irrigation; Groundwater; Surface water; Watercourses; Conjunctive use; Water market; Salinity; Farming systems; Farm Management.
Ano: 1993
URL: http://purl.umn.edu/113013

Conjunctive water management in the Rechna Doab: An overview of resources and issues
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Jehangir,   Waqar Ahmed; Qureshi,   Asad Sarwar; Ali,   Nazim.
Tipo: Working or Discussion Paper
Palavras-chave: Water management; Conjunctive use; Surface water; Groundwater; Aquifers; Pumping; Water quality; River basins; Productivity; Canals; Waterlogging; Salinity; Land resources; Land use; Crop production; Rice; Wheat; Cotton; Sugarcane; Crop Production/Industries; Land Economics/Use; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92704

Planning groundwater use for sustainable rural development
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: International Water Management Institute (IWMI).
Groundwater use is rapidly increasing in Sri Lanka, bringing several benefits to small farmers—by allowing them to grow more crops, minimize the impact of droughts, and profit from selling high-value produce. But how can this be sustained? Lessons learned from other countries with longer histories of groundwater use can help policymakers, planners, and development organizations avoid the pitfalls and dangers of indiscriminate use, and capture the benefits that groundwater can bring.
Tipo: Report
Palavras-chave: Groundwater management; Rural development; Wells; Aquifers; Surface water; Conjunctive use; Irrigation water; Water pollution; Crop Production/Industries; Farm Management.
Ano: 2005
URL: http://purl.umn.edu/113019

Sustaining surface and groundwater resources; Proceedings of the Internatinal Workshop on Conjunctive Water Management for Sustainable Irrigated Agriculture in South Asia, April 16-17, 2002 Lahore, Pakistan
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Tipo: Presentation
Palavras-chave: Water resource management; Conjunctive use; Surface water; Groundwater; Models; Crop production; Water requirements; Water balance; Water table; Sustainable agriculture; Environmental sustainability; Supplementary irrigation; Water quality; Rain; Pumping; Salinity control; Remote sensing; GIS; Water scarcity; Farm income; Institutional development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/118417

Capacity building for participatory irrigation management in Sindh Province of Pakistan.
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Memon,   Yameen; Talpur,   Mustafa; Murray-Rust,   Hammond.
Tipo: Working or Discussion Paper
Palavras-chave: River basins; Institutions; Organizations; Private sector; Public sector; Local government; Mapping; Water resource management; Water policy; Legislation; Rural women; Constraints; Groundwater; Surface water; Water quality; Water use; Water users; Dams; Reservoirs; Large-scale systems; Irrigation management; Industrialization; Case studies; Operations; Maintenance; Canals; Conflict; Farmer-agency interactions; Policy; Water supply; Rural development; Community/Rural/Urban Development; Farm Management; Institutional and Behavioral Economics; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/92769

Optimal Management of a Potential Invader:  The Case of Zebra Mussels in Florida
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Lee,   Donna J.; Adams,   Damian C.; Rossi,   Frederick J.
Dominant users of Lake Okeechobee water resources are agricultural producers and recreational anglers.  These uses will be directly affected, should the lake become infested with zebra mussels.  We employ a probabilistic bioeconomic simulation model to estimate the potential impact of zebra mussels on consumptive water uses, recreational angling, and wetland ecosystem services under alternative public management scenarios.  Without public management, the expected net economic impact from zebra mussels is - $244.1 million over 20 years.  Public investment in prevention and eradication will yield a net expected gain of +$188.7 million, a superior strategy to either prevention or eradication alone.
Tipo: Journal Article
Palavras-chave: Cost transfer; Fishing; Invasive species; Probability transition matrix; Surface water; Wetlands; C63; Q25; Q52; Q57; Q58.
Ano: 2007
URL: http://purl.umn.edu/37125

Water resources management in Afghanistan:  The issues and options
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Qureshi,   Asad Sarwar.
Tipo: Working or Discussion Paper
Palavras-chave: Climate; Water availability; Crop yield; Rural economy; Water resources; Groundwater; Surface water; Irrigation systems; Irrigation canals; Dams; Water allocation; Water resource management; Crop Production/Industries; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92703

Poverty reduction through improved agricultural water management; Proceedings of the Workshop on Pro-poor Intervention Strategies in Irrigated Agriculture in Asia Islamabad, Pakistan, 23-24 April 2003
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Tipo: Presentation
Palavras-chave: Water management; Irrigated farming; Poverty; Food security; Households; Income; Drought; Forest policy; Natural disasters; Land ownership; Groundwater; Water market; Water balance; Legislation; Tube wells; Institutional development; Crop production; Wages; Economic aspects; Tillage; Water harvesting; Public policy; Surface water; Labor; Exports; Public sector; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Financial Economics; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Institutional and Behavioral Economics; Land Economics/Use; Public Economics; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/118414

Water scarcity and the role of storage in development
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Keller,   Andrew; Sakthivadivel,   Ramasamy; Seckler,   David.
Of the four major ways of storing water -in the soil profile, in underground aquifers, in small reservoirs, and in large reservoirs behind dams-the first is possible only for relatively short periods of time. In this paper, the authors concentrate on the three kinds of long-term technologies, and compare the hydrological, operational, economic and environmental aspects of each.
Tipo: Report
Palavras-chave: Groundwater; Water storage; Water scarcity; Reservoir storage; Costs; Aquifers; Conjunctive use; River basins; Surface water; Dams; Crop Production/Industries; Environmental Economics and Policy; Land Economics/Use; Research and Development/Tech Change/Emerging Technologies; Resource /Energy Economics and Policy.
Ano: 2000
URL: http://purl.umn.edu/44575

Cost-benefit analysis of abatement measures for nutrient emission from agriculture
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Wustenberghs,   H.; Broekx,   Steven; Van Hoof,   K.; Claeys,   Dakerlia; D'Heygere,   T.; D'Hooghe,   J.; Dessers,   R.; Huysmans,   T.; Lauwers,   Ludwig H.; Meynaerts,   E.; Vercaemst,   P.
In intensive animal husbandry areas surface water N and P concentrations often remain too high. The Water Framework Directive calls for additional nutrient emission abatement measures. Therefore, costs and benefits for possible agricultural measures in Flanders were first analysed in terms of soil balance surplus. Finally, abatement measures for agriculture, households and industry were set off against each other and ranked according to their cost-efficiency by the Environmental Costing Model. Increased dairy cattle efficiency, winter cover crops and increased pig feed efficiency turn out very cost efficient. Other agricultural measures are less cost efficient than for instance collective treatment for households and industry.
Tipo: Conference Paper or Presentation
Palavras-chave: Nitrogen and phosphorus abatement; Surface water; Cost efficiency; Environmental Economics and Policy; Livestock Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/44245

Institutional constraints to conjunctive water management in the Rechna Doab.
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Jehangir,   Waqar Ahmed; Horinkova,   Vilma.
Tipo: Working or Discussion Paper
Palavras-chave: Water management; Conjunctive use; Groundwater; Surface water; River basins; Institutional development; Organizations; Water law; Legislation; Irrigation scheduling; Conflict; Institutional constraints; Organizational change; Institutional and Behavioral Economics; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92705

Lift irrigation in West Africa: challenges for sustainable local management
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Purkey,   David R.; Vermillion,   Douglas Lynn.
Tipo: Working or Discussion Paper
Palavras-chave: Irrigation management; Low lift irrigation; Privatization; Social aspects; Economic aspects; Groundwater irrigation; Surface water; Environment; Policy; Environmental Economics and Policy; Farm Management.
Ano: 1995
URL: http://purl.umn.edu/113604

Optimal investment in prevention and control of a potential invader: the case of zebra mussels in Florida waterways
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Adams,   Damian C.; Lee,   Donna J.; Rossi,   Frederick J.
The probability of a severe infestation ranges from 2% to 98% depending on investment in monitoring, prevention, and response technology. Given the estimated potential for economic damages, preliminary results indicate that prudent investment in prevention and early response net a present value net return of $10 million over 20 years.
Tipo: Conference Paper or Presentation
Palavras-chave: Invasive species; Bio-pollutant; Control cost; Cost transfer; Surface water; Risk; Environmental Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/34933

Water quality and anthropogenic impact in the watersheds of service reservoirs in the Brazilian semi-arid region
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Chaves,Luiz Carlos Guerreiro; Lopes,Fernando Bezerra; Maia,Anthony Rafael Soares; Meireles,Ana Célia Maia; Andrade,Eunice Maia de.
ABSTRACT The semi-arid region of Brazil is characterised by the irregular temporal and spatial distribution of the rainfall, which together with anthropogenic action causes degradation of the water quality. The aim of this study was to evaluate water quality in surface reservoirs in the Brazilian semi-arid region due to rainfall variability and the degree of anthropisation of the watersheds. Water samples were collected at the Orós, Trussu and Muquém reservoirs during August and December of 2012, April, October and December of 2013, and March and June of 2014 (dry and rainy periods). The following limnological attributes were analysed: electrical conductivity, pH, turbidity, transparency and chlorophyll-a, with the results evaluated using box plots, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthropised area; Surface water; Spatial and temporal variability of precipitation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200223

Chemical composition of phytoplankton from the estuaries of Eastern Amazonia
Provedor de dados: Acta Amazonica
Autores: Vilhena,Maria do Perpetuo Socorro Progene; Costa,Marcondes Lima da; Berrêdo,José Francisco; Paiva,Rosildo Santos; Almeida,Pryscila Denise.
Phytoplankton is important bioindicator of chemical and biological modifications of natural ecosystems. The objective of this study was to determine the total chemical composition of the phytoplankton of the Pará and Mocajuba estuaries on the eastern coast of the Amazon region in the Brazilian state of Pará. The chemical composition of the surface water, bottom sediments (total sample and bioavailable fraction), and the phytoplankton were determined by inductively coupled plasma optical emission spectrometry. Phytoplankton contained high concentrations of Ca, P, Mn, Fe, Zn, Al, Ba, and Pb. The phytoplankton of the Mocajuba estuary is rich in Fe (2,967-84,750 µg g-1), while those from the Pará is rich in Al (1,216-15,389 µgg-1), probably reflecting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sediments; Trace metals; Plankton; Surface water.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000400012

Status and sustainability challenges of agricultural water usage in Bangladesh
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Amin, M. G. Mostofa.
Maintaining sustainability in agricultural water usage is a critical concern particularly when the burgeoning population demands more food while adverse climate change impacts water availability. Despite this, the climate-water-crop nexus is still poorly understood in many regions throughout the globe. This study was conducted to quantify current agricultural water use in Bangladesh, one of the most climate-vulnerable countries, and to assess its sustainability challenges. The number of crops, cropping area, yield, water use, long-term daily rainfall, daily river stage and weekly groundwater level data were collected and statistically analyzed. This study revealed that the two most drought-prone northwest divisions export virtual water embedded in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Virtual water transport; Climate change; Water security; Groundwater; Surface water; Precipitation; Drought index.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6973

Environmental Impact Assessment of two polluting sources on stream in Nigeria
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Akinbile, Christopher Oluwakunmi; Olugbojo, Wasiu; Olubanjo, Obafemi.
The environmental impact of locating two polluting sources of landfill (refuse dump) and petrochemicals on Alaba stream in Akure, Nigeria was assessed. This was due to the dependence of Alaba inhabitants and its environment on the stream for variety of uses. Twenty physio-chemical parameters were analyzed for wet and dry seasons respectively with three sampling points within 5m intervals from one another of the two polluting sources on the stream. The parameters included: colour, odour, taste, pH, temperature, turbidity, alkalinity, conductivity, dissolved oxygen (DO), biochemical oxygen demand (BOD5) and total solids (TS). Others were chloride (CL-), total dissolved solids (TDS), total suspended solids (TSS), lead (Pb), nitrate (NO3), sulphate (SO4-2),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water quality; Treatment Pollution; Parameters; Petrochemical; Landfill; Surface water; Akure.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3215

Environmental Impact Assessment of two polluting sources on stream in Nigeria
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Christopher Oluwakunmi Akinbile; FUTA; Wasiu Olugbojo; Federal University of Technology, Akure; Obafemi Olubanjo; Federal University of Technology, Akure.
The environmental impact of locating two polluting sources of landfill (refuse dump) and petrochemicals on Alaba stream in Akure, Nigeria was assessed. This was due to the dependence of Alaba inhabitants and its environment on the stream for variety of uses. Twenty physio-chemical parameters were analyzed for wet and dry seasons respectively with three sampling points within 5m intervals from one another of the two polluting sources on the stream. The parameters included: colour, odour, taste, pH, temperature, turbidity, alkalinity, conductivity, dissolved oxygen (DO), biochemical oxygen demand (BOD5) and total solids (TS). Others were chloride (CL-), total dissolved solids (TDS), total suspended solids (TSS), lead (Pb), nitrate (NO3), sulphate (SO4-2),...
Palavras-chave: Water quality; Treatment Pollution; Parameters; Petrochemical; Landfill; Surface water; Akure.
Ano: 2015
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3215

Freshwater quality of a stream in agricultural area where organic compost from animal and vegetable wastes is used
Provedor de dados: Ciência e Agrotecnologia
Autores: Saran,Luciana Maria; Meneghine,Aylan Kener; Célico,Amanda Schimidt; Pinheiro,Daniel Guariz; Alves,Lucia Maria Carareto.
ABSTRACT Organic compost from biomass residues constitutes a viable alternative for partial or total replacement of mineral fertilizers for growing vegetables. This study evaluated the effects of compost on the water quality of a stream used mainly for irrigation of agricultural crops cultivated in nearby soil that has been treated with organic compost produced by carcasses, animal and vegetable waste for the last ten years. We sampled water biannually for two years, 2013 and 2014, from five locations along the stream. Physical variables and some chemical variables were analyzed. We also analyzed the total number of coliforms (Escherichia coli). Bacterial populations were compared by carbon substrate consumption. Total phosphorus contents in the samples...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EcoPlate; Carcasses and animal waste; Agriculture; Surface water; Composting.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300263