SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

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

Multi-Market Trading for Cooperative Resource Management: An Application to Water Pollution and Fisheries

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

Nematodes as indicators pollution: a case study from the Swartkops River system, South Africa

OMA

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...

Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane

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

Scientia Agricola

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...

Nivel de contaminación por hidrocarburos del petróleo en zonas costeras de Cuba

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

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

Notes on the hematology of free-living Phrynops geoffroanus (Testudines: Chelidae) in polluted rivers of Southeastern Brazil

Rev. Bras. Zool.

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

Observations des microplastiques sur les cotes francaises de mediterranee occidentale

ArchiMer

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

Observations préliminaires recueillies dans l'exécution des programmes entrepris par la station biologique de Roscoff

ArchiMer

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

Optimal Soil Management and Environmental Policy

Organic carbon and oil hydrocarbons in bottom sediments of Sevastopol Bay (the Black Sea)

Oueslati, Walid.

This paper studies the effects of environmental policy on the farmers 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

IBSS Repository

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

Oxígeno disuelto y materia orgánica en cuerpos de aguas interiores del Archipiélago Sabana-Camagüey, Cuba.

Panorama da contaminação ambiental por agrotóxicos e nitrato de origem agrícola no Brasil: cenário 1992/2011.

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

Infoteca-e

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

Phytase in diets for Nile tilapia in the growth period

R. Bras. Zootec.

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...

Policy Endogeneity and the Effects of Trade on the Environment

Palavras-chave: Excretion; Fish; Growth; Oreochromis niloticus; Phosphorus; Pollution.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007000700001

Pollution and the Efficiency of Urban Growth

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

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

Pollution et écosystèmes marins en Mauritanie

Pollution of wetlands in Tanzania

Ba, M..

Tipo: Journal Contribution

Palavras-chave: Ecosystems; Pollution; Sea pollution.

Ano: 1982

URL: http://hdl.handle.net/1834/4750

Potential of sunflower, castor bean, common buckwheat and vetiver as lead phytoaccumulators

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

AGRIAMBI

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;...

Poverty and Its Alleviation in Yunnan Province China: Sources, Policies and Solutions

Palavras-chave: Pollution; Heavy metal; Phytotoxicity; Tolerance; Phytoremediation.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300243

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

Preliminary assessment of heavy metal levels in Mytella falcata (Bivalvia, Mytilidae) from Bacanga River estuary, São Luis, State of Maranhão, Northeastern Brazil

BJB

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...