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| Registros recuperados: 145 | |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Journal Contribution |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/573 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Journal Contribution |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/576 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Journal Contribution |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/580 |
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| Heymans, S.J.; Vakily, J.M.. |
| We present the key feature of a quantitative food web model for the shelf and slope waters off Sierra Leone, constructed using the Ecopath with Ecosim software. Three periods are represented: 1964, based on data from the Guinean Trawling Survey, complemented with field data on lower trophic levels gathered in the late 1950/early 1960s and published by A.R. Longhurst; 1978, for which fish abundance data from an ex-USSR survey exist, along with related, scattered fisheries information; and 1990, for which a fair amount of fisheries data exist, along with the results of a Spanish trawl survey. Demersal fish biomass appears to have declined linearly from 1964 to 1990, due to the massive increase of the catches of distant water fleets operating in Sierra Leone,... |
| Tipo: Conference Material |
Palavras-chave: Ecosystems; Marine structures. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/710 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Journal Contribution |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/579 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Journal Contribution |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/572 |
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| Kirchner, C. H.; Bartholomae, C. H.; Kreiner, A.. |
| This study attempts to explain the variability in recruitment of sardine in the northern Benguela and to develop potential models by including environmental information to predict recruitment. Two different recruitment and spawner number datasets were available: a VPA-developed dataset, for the period 1952–1987, and data from a simple age-structured model for 1992–2007. In all, four environmental indices were used: the degree of the intrusion of the warm Angola Current into northern Namibia, termed the Angola–Benguela front index; the extent of the upwelling area off central Namibia; average sea surface temperature (SST) over the northern and central Namibian shelf; and wind stress anomalies at Lüderitz as an indicator of upwelling strength. Contrary to... |
| Tipo: Journal Contribution |
Palavras-chave: Currents (water); Upwelling; Sardine fisheries; Environments; Ecosystems; Anomalies; Biomass; Spawning; Recruitment. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4671 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Report |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/601 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Report |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/610 |
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| Food and Agriculture Organization of the United Nations (FAO),Center for International Earth Science Information Network (CIESIN), World Resources Institute, International Food Policy Research Institute, Global Maritime Boundaries Database (GMBD),World Conservation Monitoring Centre(WCMC),The International Society for Mangrove Ecosystems (ISME) |
| Tipo: Report |
Palavras-chave: Ecosystems. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/607 |
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| Tackx, M.. |
| When considering zooplankton feeding as one of the pathways involved in the transfer of substances in marine ecosystems, it is important to study the composition and size distribution of the seston: firstly, the elements in which one is interested may be associated with different types and sizes of particles; secondly, particle size and composition are important factors in relation t o the feeding process of the zooplankton itself. High speed cinematographic studies have recently revealed that copepods use two different mechanisms for feeding. Small particles (< 12 pm) are collected by continuous low amplitude movements of the second maxillae and combing of the appendages. Larger particles are detected and collected individually by means of a specific... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecosystems; Seston; Zooplankton. |
| Ano: 1984 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3273 |
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| Rojas-Herrera,R; Zamudio-Maya,M; Arena-Ortiz,L; Pless,RC; O'Connor-Sánchez,A. |
| Mexico counts among the five countries with the highest biodiversity in the world. In the Yucatán Peninsula, there are aquatic ecosystems with a very special microbial diversity. These ecosystems are essential for the ecological equilibrium of the region, and are seriously threatened by human activities. Access and knowledge of the microbial resources of these environments have an enormous scientific interest, and could potentially result in biotechnological products which could lead to more efficient and environmentally friendly processes; it could also offer a full arsenal of microorganisms and/or novel molecules to the local and world industry to face the current needs. In recent years, with the rise of metagenomic technology, knowledge about microbial... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Ecosystems; Biotechnology; 454-sequencing. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572011000200017 |
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| McCartney, Matthew P.; Rebelo, Lisa-Maria; Senaratna Sellamuttu, Sonali; De Silva, Sanjiv. |
| In many places, growing population, in conjunction with efforts to increase food security, is escalating pressure to expand agriculture within wetlands. The environmental impact of wetland agriculture can have profound social and economic repercussions for people dependent on ecosystem services other than those provided directly by agriculture. If wetlands are not used sustainably, the functions which support agriculture, as well as other food security and ecosystem services, are undermined. This report synthesizes findings from multidisciplinary studies conducted into sustainable wetland agriculture by IWMI and partners in Africa and Asia. It highlights the value of wetland agriculture for poverty reduction as well as the need for more systematic planning... |
| Tipo: Report |
Palavras-chave: Wetlands; Agriculture; Productivity; Ecosystems; Poverty; Food security; Farm Management; Food Security and Poverty; Productivity Analysis. |
| Ano: 2010 |
URL: http://purl.umn.edu/113010 |
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| Haileslassie, Amare; Hagos, Fitsum; Mapedza, Everisto; Sadoff, Claudia W.; Awulachew, Seleshi Bekele; Gebreselassie, Solomon; Peden, Don. |
| Through rapid assessment of existing literature and review of policy and other official documents, the report synthesizes the existing knowledge and gaps on policies and institutions and identifies key research issues that need in-depth study. The report provides an overview of the range of key livelihoods and production systems in the Blue Nile Basin (BNB) and highlights their relative dependence on, and vulnerability to, water resources and water-related ecosystem services. It also makes an inventory of current water and land related policies and institutions in the BNB, their organizational arrangements, dynamics and linkages and key policy premises. It highlights the major problems in institutional arrangements and policy gaps and makes suggestions for... |
| Tipo: Working or Discussion Paper |
Palavras-chave: River basins; Water policy; Institutions; Institutional development; Farming systems; Mixed farming; Cereals; Sorghum; Irrigated farming; Vegetables; Pastoralism; Poverty; Water supply; Sanitation; Labor; Ecosystems; Energy; Water power; Watershed management; Water harvesting; Legal aspects; Environmental policy; Water users associations; Irrigation programs; Agricultural and Food Policy; Agricultural Finance; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/91871 |
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| Registros recuperados: 145 | |
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