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	Provedor de dados Buscador Latinoamericano (1) Autor David M. Rosen (1) Rosen, David M. (1) Palavra-chave CIENCIA MILITAR (1) CONFLICTO INTERNACIONAL (1) DERECHOS HUMANOS (1) GUERRILLA (1) INFANCIA (1) SOLDADOS (1) TERRORISMO (1) VIOLENCIA (1) Mais... Tipo do documento Text (1) Ano 2005 (1) País Ecuador (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 40 Primeira ... 1 2 ... Última Fytohydrobiologisch onderzoek van oppervlaktewaters in Vlaanderen: 5. De afgesneden Scheldemeanders: het Zonneputje, de Spanjaard, de Van-Looy-put, de Bruwee (bij Gent) OMA 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 AgEcon 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 AgEcon 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 AgEcon 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 AgEcon 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. AgEcon 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 AgEcon 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 AgEcon 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 AgEcon 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 AgEcon 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 AgEcon 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. AgEcon 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 AgEcon 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 AgEcon 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 Rev. Ciênc. Agron. 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 Acta Amazonica 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 CIGR Journal 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 CIGR Journal 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 CIGR Journal 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 Ciência e Agrotecnologia 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 Registros recuperados: 40 Primeira ... 1 2 ... Última

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