Consulta: subjectFacets:"Catchment areas"
Registros recuperados: 15
Data/hora: 01/06/2024 09:50:40

Étude des secteurs du Croisic et de Pen-Bé : estimation des apports continentaux et évaluation des stocks conchylicoles
Provedor de dados: 5
Autores: Gendronneau, Maud; Haure, Joel; Jeanneret, Hélène; Le Merrer, Yoann; Lequette, Camille; Lomakine, Cédric; Martin, Jean-louis; Papin, Mathias; Ponthoreau, Catherine; Robin, Marc.
Ifremer, Nantes University and the township community "CAP Atlantique" have joined their skills to try to better understand how two key conchological areas in the shore economy of the Pays de la Loire area develop, especially since, environmentally, little is known about them, and because they face recurrent issues on the zootechnic level. This programme encompasses two main topics: assessment of environmental inputs (catchments areas input, contaminants evolution in the area, and impact on the conchological zones) and a study of the conchological culture (growth, mortality, analysis of the stocks). Concomitantly, operational tools (hydrodynamic and flux transfer models, databases, SIG) are developed to improve local management of the sites and information...
Tipo: Text
Palavras-chave: Phytosanitary; Bacteria; SIG; Conchological stocks; Modelization; Catchment areas; Continental inputs; Pen Bé; Le Croisic; Phytosanitary; Bacteria; SIG; Conchological stocks; Modelization; Catchment areas; Continental inputs; Pen Bé; Le Croisic.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/rapport-1264.pdf

Étude des secteurs du Croisic et de Pen-Bé : estimation des apports continentaux et évaluation des stocks conchylicoles
Provedor de dados: 5
Autores: Gendronneau, Maud; Haure, Joel; Jeanneret, Hélène; Le Merrer, Yoann; Lequette, Camille; Lomakine, Cédric; Martin, Jean-louis; Papin, Mathias; Ponthoreau, Catherine; Robin, Marc.
Ifremer, Nantes University and the township community "CAP Atlantique" have joined their skills to try to better understand how two key conchological areas in the shore economy of the Pays de la Loire area develop, especially since, environmentally, little is known about them, and because they face recurrent issues on the zootechnic level. This programme encompasses two main topics: assessment of environmental inputs (catchments areas input, contaminants evolution in the area, and impact on the conchological zones) and a study of the conchological culture (growth, mortality, analysis of the stocks). Concomitantly, operational tools (hydrodynamic and flux transfer models, databases, SIG) are developed to improve local management of the sites and information...
Tipo: Text
Palavras-chave: Phytosanitary; Bacteria; SIG; Conchological stocks; Modelization; Catchment areas; Continental inputs; Pen B�; Le Croisic; Phytosanitary; Bacteria; SIG; Conchological stocks; Modelization; Catchment areas; Continental inputs; Pen B�; Le Croisic.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/00380/49129/49564.pdf

Policies, legislation and organizations related to water in South Africa, with special reference to the Olifants River Basin.
Provedor de dados: 31
Autores: Thompson,   Hubert; Stimie,   Chris M.; Richters,   E.; Perret,   Sylvain R.
Tipo: Working or Discussion Paper
Palavras-chave: Water resource management; River basins; Water use; Organizations; Institutions; Mapping; Government; Political aspects; Ethnology; Social status; Water policy; Water law; Land tenure; Water supply; Sanitation; Water users; Land use; Conflict; Private sector; Non-governmental organizations; Local government; Water users' associations; Catchment areas; Monitoring; Community/Rural/Urban Development; Institutional and Behavioral Economics; Land Economics/Use; Political Economy; Resource /Energy Economics and Policy.
Ano: 2001
URL: http://purl.umn.edu/92770

Environmental water needs and impacts of irrigated agriculture in river basins:  A framework for a new research program
Provedor de dados: 31
Autores: Smakhtin,   Vladimir U.
Tipo: Working or Discussion Paper
Palavras-chave: Water resource management; Water conservation; Irrigated farming; River basins; Environmental effects; Ecosystems; Water requirements; Water allocation; Catchment areas; Lagoons; Wetlands; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92695

Simulating impacts of irrigation on the hydrology of the Karagan Lagoon in Sri Lanka
Provedor de dados: 31
Autores: Stanzel,   Philipp; Oze,   Alexander; Smakhtin,   Vladimir U.; Boelee,   Eline; Droogers,   Peter.
Tipo: Working or Discussion Paper
Palavras-chave: Lagoons; Hydrology; Irrigation effects; Simulation models; Sensitivity analysis; Irrigation programs; Catchment areas; Tanks; Runoff; Precipitation; Evaporation; Seepage; Climate; Evapotranspiration; Paddy fields; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/92698

Assessing the economic impact of redistributing water within a catchment: A case study of the Musi Catchment in the Krishna Basin in India
Provedor de dados: 31
Autores: Davidson,   Brian; Hellegers,   Petra J.G.J.; Samad,   Madar.
The aim in this paper was to present the details of an economic modeling exercise conducted on the Musi Catchment of the Krishna Basin. The model has the unique characteristic of being able to value the water used on individual crops and in different regions. Thus, the individual values of water used to produce different crops, grown over two different seasons and over five very different regions within a catchment, were determined. This is a significant improvement over previous attempts, where a single value of water in a catchment was derived regardless of what it is used for, when it was used and where it used in the catchment. In addition to the agricultural valuation process, some account was made for the other uses of water and how they should be...
Tipo: Working or Discussion Paper
Palavras-chave: Economic impact; Catchment areas; River basins; Models; Water allocation; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/91870

Establishing a catchment monitoring network through a participatory approach: A case study from the Potshini Catchment in the Thukela River Basin, South Africa
Provedor de dados: 31
Autores: Kongo,   Victor M.; Jewitt,   Graham P.W.; Lorentz,   Simon A.
Tipo: Working or Discussion Paper
Palavras-chave: River basins; Catchment areas; Monitoring; Surveys; Hydrology; Discharges; Flumes; Stream flow; Runoff; Conservation tillage; Groundwater; Rain; Evaporation; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/91877

Productivity of water in agriculture: Farmers’ perceptions and practices
Provedor de dados: 31
Autores: Mahoo,   Henry F.; Mkoga,   Zakaria Juma; Kasele,   Sydney Stephen; Igbadur,   Henry E.; Hatibu,   Nuhu; Rao,   Karuturi P.C.; Lankford,   Bruce A.
Stakeholders in agriculture and water related issues have different perceptions about the productivity of water. This is evident by the different definitions of productivity of water, though most of the definitions hinge around the benefits accrued from water use. The viewpoint of smallholder farmers’ regarding the productivity of water is important in order to promote the concept of productivity of water in a country like Tanzania. This is because 95 percent of the farmers are smallholders. This paper presents the farmers’ understanding of the productivity of water in the Mkoji sub-catchment (MSC) in the Ruaha River Basin in Tanzania. It also presents their practices aimed at increasing the productivity of water in the area. It reveals that the concept of...
Tipo: Working or Discussion Paper
Palavras-chave: River basins; Catchment areas; Water productivity; Farmers; Stakeholders; Conflict; Farming systems; Villages; Irrigation methods; Domestic water; Households; Agricultural and Food Policy; Crop Production/Industries; Farm Management; Production Economics; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/91903

Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa
Provedor de dados: 31
Autores: McCartney,   Matthew P.; Arranz,   Roberto.
Water resource development has played a significant role in the expansion of agriculture and industry in the Olifants River Catchment. However, currently water deficit is one of the major constraints hampering development in the catchment; both the mining and agricultural sectors are producing below optimal levels because of their reliance on insufficient supplies. In this study, the Water Evaluation and Planning (WEAP) model was used to evaluate scenarios of historic, current and future water demand in the catchment. For each scenario, the WEAP model was used to simulate demand in five different sectors (rural, urban, mining, commercial forestry and irrigation) over a 70-year period of varying rainfall and hydrology. Levels of assured supply were...
Tipo: Report
Palavras-chave: River basins; Catchment areas; Water resources development; Water demand; Water allocation; Simulation models; Calibrations; Water use; Irrigation water; Domestic water; Ecology; South Africa; Olifants River Catchment; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Labor and Human Capital; Land Economics/Use; Production Economics; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007
URL: http://purl.umn.edu/61095

Evaluation of historic, current and future water demand in the Olifants River Catchment, South Africa.
Provedor de dados: 31
Autores: McCartney,   Matthew P.; Arranz,   Roberto.
Tipo: Report
Palavras-chave: River basins; Catchment areas; Water resources development; Water demand; Water allocation; Simulation models; Calibrations; Water use; Irrigation water; Domestic water; Ecology; South Africa; Olifants River Catchment; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/57026

An assessment of small-scale users’ inclusion in large-scale water user associations of South Africa
Provedor de dados: 31
Autores: Faysse,   Nicolas.
Tipo: Report
Palavras-chave: Farmers’ associations; Water users’ associations; Water resource management; Irrigation management; Catchment areas; Legislation; Legal aspects; Water allocation; Farmer participation; Decision making; Case studies; South Africa; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Farm Management; Financial Economics; Institutional and Behavioral Economics; Land Economics/Use; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2004
URL: http://purl.umn.edu/52969

Shallow groundwater in the Atankwidi Catchment of the White Volta Basin: current status and future sustainability
Provedor de dados: 31
Autores: Barry,   Boubacar; Kortatsi,   Benony; Forkuor,   Gerald; Gumma,   Murali Krishna; Namara,   Regassa E.; Rebelo,   Lisa-Maria; van den Berg,   Joost; Laube,   Wolfram.
The Atankwidi Catchment, which lies in the White Volta Basin in West Africa, is intensively cultivated by locals for economic gains. During dry seasons, farmers irrigate their crops, chiefly tomatoes, using shallow groundwater harvested from shallow ponds they dig using simple tools like an axe, hoe, bucket and bowls. Recent expansion in cultivated areas has brought to the fore the need to estimate the volume of shallow groundwater stored in the catchment’s underlying aquifer and to what extent it can sustain the incremental growth in irrigated areas.
Tipo: Report
Palavras-chave: Groundwater irrigation; Aquifers; River basins; Catchment areas; Irrigation practices; Remote sensing; Mapping; Crop Production/Industries; Farm Management; Resource /Energy Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/112969

Spatial variation in water supply and demand across river basins of India
Provedor de dados: 31
Autores: Amarasinghe,   Upali A.; Sharma,   Bharat R.; Aloysius,   Noel; Scott,   Christopher A.; Smakhtin,   Vladimir U.; de Fraiture,   Charlotte.
India is a large country with regional differences in per-capita water supply and demand. Attempts to describe the water situation in India at a national level are often misleading due to the tremendous diversity in the water situation across the country. This Report analyzes the spatial variation of water supply and demand across river basins in India. The study identifies basins that are water-scarce because of inadequate water availability to meet the effective demand. It also identifies issues that are important for estimating the future water demand and for the formation of policy for future water-resources development and management.
Tipo: Report
Palavras-chave: Water supply; Water demand; River basins; Catchment areas; Water availability; Water scarcity; Estimation; Irrigation water; Domestic water; Population growth; Urbanization; Groundwater extraction; Crop production; Policy; Water transfer; India; Agricultural and Food Policy; Community/Rural/Urban Development; Consumer/Household Economics; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Production Economics.
Ano: 2004
URL: http://purl.umn.edu/52966

Smallholder system innovations in integrated watershed management (SSI): Strategies of water for food and environmental security in drought-prone tropical and subtropical agro-ecosystems.
Provedor de dados: 31
Autores: Bhatt,   Yogesh; Bossio,   Deborah A.; Enfors,   Elin; Gordon,   Line; Kongo,   Victor M.; Kosgei,   Job Rotich; Makurira,   Hodson; Masuki,  Kenneth; Mul,   Marloes; Tumbo,   Siza D.
Tipo: Working or Discussion Paper
Palavras-chave: Watershed management; Catchment areas; River basins; Hydrology; Models; Water harvesting; Crop production; Crop Production/Industries; Marketing; Production Economics; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/91943

Water-resource and land-use issues
Provedor de dados: 31
Autores: Calder,   Ian R.
This paper reviews perceived notions of the relationships between catchment land use and hydrology and explores whether much of the widely disseminated folklore, so often inextricably linked with issues of land use, is based on myth or reality. Gaps in our knowledge of the underlying processes in relation to land use and hydrology are identified. Our ability to apply this knowledge at different scales ranging from the plot to the catchment and regional scales are discussed and specific examples are drawn from Indian and African case studies. Methods for linking spatially distributed land-use hydrological models with economics and ecology through decision support systems are outlined and proposed as a framework for the integrated management of land and...
Tipo: Book
Palavras-chave: Water resource management; Water use; Case studies; Catchment areas; Land use; Hydrology; Models; Evaporation; Soil moisture; Decision support tools; Runoff; Flow; Forestry; Deforestation; Erosion; Rain; Environmental Economics and Policy; Land Economics/Use.
Ano: 1998
URL: http://purl.umn.edu/113610