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Registros recuperados: 36
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Balancing irrigation and hydropower: Case study from Southern Sri Lanka AgEcon
Molle, Francois; Jayakody, Priyantha; Ariyaratne, Badugodahewa Ranjith; Somatilake, H.S..
This report analyzes a case from southern Sri Lanka, where the Samanalawewa dam and the Kaltota Irrigation Scheme (KIS) compete for the water of the Walawe river. At the catchment level, it is shown that dam releases are well attuned to the needs of KIS and to the occurrences of natural runoff, and that little of the dam water is "lost" to the river.
Tipo: Report Palavras-chave: Reservoirs; Dams; Hydroelectric schemes; Economic analysis; Canals; Irrigation scheduling; Cropping systems; Case studies; Crop Production/Industries; Farm Management; Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/44544
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Barragens de contenção de águas superficiais de chuvas. Repositório Alice
BARROS, L. C. de.
1999
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Barragem; Construcao; Chuva; Cerrado; Brasil Central; Brazil; Dams; Construction; Rain water; Areas devastated.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/482480
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Biophysical, Socioeconomic, and Geopolitical Vulnerabilities to Hydropower Development on the Nu River, China Ecology and Society
Tullos, Desiree D.; Oregon State University; desiree.tullos@oregonstate.edu; Foster-Moore, Eric; The World Bank; fostermoore@gmail.com; Magee, Darrin; Hobart and William Smith Colleges; magee@hws.edu; Tilt, Bryan; Oregon State University; Bryan.Tilt@oregonstate.edu; Wolf, Aaron T.; Oregon State University; wolfa@geo.oregonstate.edu; Schmitt, Edwin; Chinese University of Hong Kong; schmitte@cuhk.edu.hk; Gassert, Francis; World Resources Institute; fgassert@gmail.com; Kibler, Kelly; Oregon State University; kibler.kelly@gmail.com.
Tipo: Peer-Reviewed Reports Palavras-chave: China; Dams; Hydroelectric power; Hydro-politics; International rivers; Nu River; Resettlement; Salween River; Vulnerability; Yunnan Province.
Ano: 2013
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Blood sucking Diptera (Culicidae, Psychodidae, Simuliidae) in forest fragment under impact of dam in the borderland of Rio Grande do Sul and Santa Catarina states, Brazil Ciência Rural
Muller,Gerson Azulim; Dalavequia,Maira Aparecida; Wagner,Glauber; Marcondes,Carlos Brisola.
The study of Diptera of medical importance in areas affected by dam constructions is very important due to the possibility of the occurrence of diseases transmitted by these species. Collections were performed during 2010 and 2011 in an area under impact of a dam on the Uruguai River in the borderland of Rio Grande do Sul and Santa Catarina states. Insects were collected using suction tubes and Shannon trap, also immature live forms were obtained by manual collect. Eight-hundred sixty-one Diptera insects were captured, including Haemagogus leucocelaenus (Culicidae), Aedes albopictus (Culicidae), three species of Anopheles spp. (Culicidae), two of Plebotominae and three distinct Simuliidae species. The Diptera fauna in the area is diversified and species...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dams; Diptera; Environmental impact; Vectors.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000701194
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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
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Climate change impacts on hydrology and water resources of the Upper Blue Nile River Basin, Ethiopia AgEcon
Kim, Ungtae; Kaluarachchi, Jagath J.; Smakhtin, Vladimir U..
The report evaluates the impacts of climate change on the hydrological regime and water resources of the Blue Nile River Basin in Ethiopia. It starts from the construction of the climate change scenarios based on the outcomes of several general circulation models (GCMs), uses a simple hydrological model to convert theses scenarios into runoff, and examines the impacts by means of a set of indices. The results, however uncertain with existing accuracy of climate models, suggest that the region is likely to have the future potential to produce hydropower, increase flow duration, and increase water storage capacity without affecting outflows to the riparian countries in the 2050s.
Tipo: Report Palavras-chave: Climate change; Hydrology; River basins; Runoff; Precipitation; Models; Dams; Operating policies; Water power; Drought; Analysis; Africa; Ethiopia; Egypt; Sudan; Upper Blue Nile River Basin; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Land Economics/Use; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/53025
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Dams AgEcon
Duflo, Esther; Pande, Rohini.
The construction of large dams is one of the most costly and controversial forms of public infrastructure investment in developing countries, but little is known about their impact. This paper studies the productivity and distributional effects of large dams in India. To account for endogenous placement of dams we use GIS data and the fact that river gradient affects a district's suitability for dams to provide instrumental variable estimates of their impact. We find that, in a district where a dam is built, agricultural production does not increase but poverty does. In contrast, districts located downstream from the dam benefit from increased irrigation and see agricultural production increase and poverty fall. Overall, our estimates suggest that large...
Tipo: Working or Discussion Paper Palavras-chave: Dams; Development planning; Program evaluation; India; Public Economics; O21; O12; H43; H23.
Ano: 2005 URL: http://purl.umn.edu/28373
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Developing a hydrological model for the Mekong Basin: impacts of basin development on fisheries productivity. AgEcon
Kite, Geoff.
Tipo: Working or Discussion Paper Palavras-chave: Simulation models; Hydrology; River basins; Water resource management; Productivity; Flow; Fisheries; Mapping; Data collection; Computer techniques; Climate; Soil properties; Stream flow; Dams; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2000 URL: http://purl.umn.edu/92781
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Effects of physical mixing on the environment of satellite lakes and dams of lake Victoria, Kenya OceanDocs
Guya, F.; Wakwabi, E.; Jembe, T.; Osumo, W.; Sitoki, L.; Ogutu, Z..
In the Lake Victoria (Kenya) catchment are found several small lakes and dams. The satellite lakes and dams are important aquifers and buffer zones for the lake. Besides the water bodies are important water sources both for livestock and domestic use. A study conducted in the water bodies between January 2003 and December 2004 showed that effects of eutrophication are wide spread in the lakes and dams. An investigation of primary productivity and effects of physical mixing and material transport was done. In Lake Sare, Lake Victoria waters are transported to the satellite lake during both day and night through Goye causeway that connects the two. The water bodies have higher rates of primary productivity than Lake Victoria. Spatial extent of oxygen...
Tipo: Proceedings Paper Palavras-chave: Dams; Eutrophication; Water reservoirs; Inland waters; Water bodies; Eutrophication; Primary production; Lake basins; Water mixing; Artificial lakes; Oxygen depletion; Endemic species; Pollution effects; Eutrophication; Dams; Http://aims.fao.org/aos/agrovoc/c_2734; Http://aims.fao.org/aos/agrovoc/c_2121.
Ano: 2006 URL: http://hdl.handle.net/1834/1494
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Estimation of evaporation in the Banabuiú dam, in the state of Ceará, Brazil, by different combined methods, derived from the Penman equation REA
Leão,Raimundo A. de O.; Soares,Antônio A.; Teixeira,Adunias dos S.; Silva,Demetrius D. Da.
The state of Ceará, Brazil, has 75% of its area covered by Brazilian semiarid, with its peculiar features. In this state, the dams are constituted in water structure of strategic importance, ensuring, both in time and space, the development and supply of water to population. However, construction of reservoirs results in various impacts that should be carefully observed when deciding on their implementation. One of the impacts identified as negative is the increased evaporation, which constitutes a major component of water balance in reservoirs, especially in arid regions. Several methods for estimating evaporation have been proposed over time, many of them deriving from the Penman equation. This study evaluated six different methods for estimating...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dams; Semiarid; Hydrologycal modelling; Water balance.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000100014
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Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species BABT
Pompeu,Paulo dos Santos; Horta,Luiz Felipe Mascarenhas; Martinez,Carlos Barreira.
This work aimed to experimentally evaluate the behavior of Brazilian freshwater fish species when submitted to a gradual increase in pressure, as well as sudden decompression's effects simulating the passage through a hydroelectric turbine. Four species from the São Francisco river basin were tested: Astyanax bimaculatus, Hypostomus sp., Leporinus reinhardti and Prochilodus costatus. For all of them mortality rates due to decompression were extremely low. However, the symptoms related to decompression, such as bulged eyes and hemorrhage, were not observed only in Hypostomus sp., and were more frequent the larger the pressure values were, considering the values from which decompression was performed. All these symptoms decreased significantly after 24 h of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Downstream fish passage; Dams; Experimental apparatus; Fish mortality; Pressure effects on fish.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100015
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Genetic characterization of the Neotropical catfish Pimelodus maculatus (Pimelodidae, Siluriformes) in the Upper Uruguay River Genet. Mol. Biol.
Ribolli,Josiane; Melo,Cláudio Manoel Rodrigues de; Zaniboni-Filho,Evoy.
Freshwater fish present unique challenges when one attempts to understand the factors that determine the structure of their populations. Habitat fragmentation is a leading cause of population decline that threatens ecosystems worldwide. In this study, we investigated the conservation status of genetic variability in the Neotropical catfish (Pimelodus maculatus). Specifically, we examined the structure and genetic diversity of this species in a region of the Upper Uruguay River fragmented by natural barriers and dams. There was no genetic structure among the four sites analyzed, indicating the existence of only one population group. A combination of environmental management and genetic monitoring should be used to minimize the impact of impoundment on...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conservation genetics; Dams; Habitat fragmentation; Microsatellite.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000500009
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Genetic diversity of the species Leporinus elongatus (Teleostei: Characiformes) in the Canoas Complex - Paranapanema River Neotropical Ichthyology
Ramos,Juliano Vilas Boas; Sodré,Leda Maria Koelblinger; Orsi,Mário Luís; Almeida,Fernanda Simões de.
Dams constructed along waterways interrupt the dispersion and migration of aquatic organisms, affecting mainly the abundance of migratory fish species. Translocation mechanisms have been constructed at dams aiming to minimize their impact on fish species migration behavior. There is little information available about the effect of the construction of dams on the genetic structure of the Neotropical migratory fish fauna. Therefore, RAPD molecular markers and microsatellites were utilized to evaluate the diversity and genetic structure of the migratory species Leporinus elongatus (piapara) in the Canoas Complex - Paranapanema River - Brazil. Ten groups were sampled in the fish ladders of the hydroelectric dam Canoas I and Canoas II during the reproductive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dams; Fish ladder; Genetic structure; Microsatellite; RAPD.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400015
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How pro-poor are participatory watershed management projects?: An Indian case study AgEcon
Kurian, Mathew; Dietz, Ton.
This report draws on a survey and case study evidence from 28 watershed management groups in Haryana to argue that participatory watershed management projects need not necessarily safeguard the interests of poorer rural households.
Tipo: Report Palavras-chave: Watershed management; Participatory management; Poverty; Farm income; Labor; Households; Women; Forest management; Dams; Irrigated farming; Case studies; Agricultural Finance; Consumer/Household Economics; Crop Production/Industries; Farm Management; Food Security and Poverty.
Ano: 2005 URL: http://purl.umn.edu/44542
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Hydrological and environmental issues of interbasin water transfers in India: a case of the Krishna River Basin AgEcon
Smakhtin, Vladimir U.; Gamage, Nilantha; Bharati, Luna.
Tipo: Report Palavras-chave: River basins; Water transfer; Environmental effects; Dams; Reservoirs; Water resources development; Irrigation requirements; Case studies; India; Krishna River; Godavari River; Community/Rural/Urban Development; Crop Production/Industries; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/53065
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Improved livelihoods in lower Limpopo: Process documentation AgEcon
van Koppen, Barbara; Mirira, R..
Tipo: Report Palavras-chave: Water resource management; Project planning; Project management; Participatory management; Community involvement; Irrigation schemes; Pumps; Dams; Canals; Mozambique; Lower Limpopo River Basin; Ndonga; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Land Economics/Use; Production Economics; Productivity Analysis; Teaching/Communication/Extension/Profession.
Ano: 2009 URL: http://purl.umn.edu/91808
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Integrated Management of the Blue Nile Basin in Ethiopia: Hydropower and Irrigation Modeling AgEcon
Block, Paul J..
Ethiopia is at a critical crossroads with a large and increasing population, a depressed national economy, insufficient agricultural production, and a low number of developed energy sources. The upper Blue Nile basin harbors considerable untapped potential for irrigation and hydropower development and expansion. Numerous hydrologic models have been developed to assess hydropower and agricultural irrigation potential within the basin, yet often fail to adequately address critical aspects, including the transient stages of large-scale reservoirs, relevant flow retention policies and associated downstream ramifications, and the implications of stochastic modeling of variable climate and climate change. A hydrologic model with dynamic climate capabilities is...
Tipo: Working or Discussion Paper Palavras-chave: Ethiopia; Dams; Water resources development; Hydrologic model; Energy; Climate variability; Climate change; Resource /Energy Economics and Policy.
Ano: 2007 URL: http://purl.umn.edu/42413
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Interaction between extreme weather events and megadams increases tree mortality and alters functional status of Amazonian forests. Repositório Alice
MOSER, P.; SIMON, M. F.; MEDEIROS, M. B. de; GONTIJO, A. B.; COSTA, F. R. C..
bitstream/item/202337/1/Moser-et-al-2019-Journal-of-Applied-Ecology.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Dams; Flood tolerance; Functional traits; Precipitation anomaly; Root tissue density; Stomata density; Global warming; Tree mortality.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112499
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IWRM and Rural Livelihood Project in Dzimphutsi: Process documentation AgEcon
van Koppen, Barbara; Shaba, Stalin.
Tipo: Report Palavras-chave: Water resource management; Multiple use; Project planning; Project management; Participatory management; Community involvement; Dams; Irrigation schemes; Irrigated farming; Fish ponds; Livestock; Domestic water; Villages; Water scarcity; Institution building; Water users; Impact assessment; Malawi; Dzimphutsi Village; Mtendere Irrigation Scheme; Nkudzi River; Agribusiness; Agricultural and Food Policy; Community/Rural/Urban Development; Crop Production/Industries; Demand and Price Analysis; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Land Economics/Use; Livestock Production/Industries; Production Economics; Productivity Analysis; Resource /Energy Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/91814
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Les conséquences des aménagements hydrauliques de la vallée du Mono (Togo-Bénin). Saura-t-on gérer l'avenir ? OceanDocs
Rossi, G.; Blivi, A.B..
Situé sur la frontière Togo-Bénin, le Mono draine un bassin-versant d'environ 30000 km2 et se jette dans l'Atlantique par l'intermédiaire d'un vaste système lagunaire. Un premier barrage, celui de Nangbeto, a été construit en 1987, modifiant de façon drastique le régime hydro-sédimentaire naturel dans la vallée et à l'embouchure. Un second barrage, celui d' Adjarala, va être entrepris....
Tipo: Journal Contribution Palavras-chave: Dams; Collisions; Environment management.
Ano: 1995 URL: http://hdl.handle.net/1834/1232
Registros recuperados: 36
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