Browsing by Title
Now showing items 5004-5023 of 5196
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Vulnerability of national economies to the impacts of climate change on fisheries
(2009)Type: Journal ArticleAnthropogenic global warming has significantly influenced physical and biological processes at global and regional scales. The observed and anticipated changes in global climate present significant opportunities and ... -
Wall-to-wall fieldwork: some guidelines for secondary data collection in developing countries
(1991)Type: Journal ArticleA discussion is presented on the usefulness of secondary data in research in the field of agriculture, considering implications for the fisheries and aquaculture sectors. Four categories of secondary data are examined -- ... -
Warning signs unheeded in South Pacific invertebrate trade
(1996)Type: Journal ArticleNearshore marine resources play a significant role in the lives of South Pacific islanders and can be critical to the economies of nations in the region. However, few countries have adequate management controls in place ... -
Waste management in the coastal areas of the ASEAN region: roles of governments, banking institutions, donor agencies, private sector and communities
(1992)Type: Conference ProceedingsThis conference aimed to assess the severity of environmental threats of waste disposal to the ASEAN region's coastal zone; demonstrate technologies in waste management; explore ways in which international banking institutions ... -
Wastewater reuse in aquaculture: socially and environmentally appropriate wastewater treatment for Vietnam
(1996)Type: Journal ArticleWastewater is reused and treated in four main types of farming in Vietnam: fish culture in 200 ha; rotation of rice and fish culture in 400 ha; land vegetables and aquatic vegetables. -
Wastewater treatment for land-based aquaculture: improvements and value-adding alternatives in model systems from Australia
(2013)Type: Journal ArticleSettlement ponds are used to remove particulate and dissolved nutrients in Australian land-based aquaculture wastewater. At best, marine and brackish water settlement ponds reduce total suspended solids by 60%, but their ... -
Wastewater use in aquaculture: research in Peru
(1995)Type: Journal ArticleUse of wastewater is an issue gaining importance throughout the (developing) world, as water sources become scarcer and competition for them increases. In Peru, research has shown the technical, economic and social feasibility ... -
Wastewater-fed aquaculture systems: status and prospects
(1996)Type: Journal ArticleIssues concerning the promotion of wastewater reuse in aquaculture are re-examined in this article. -
Water and fisheries
(2009)Type: Book ChapterThis paper highlights the importance of fisheries and aquaculture in management of the world’s water resources. It underlines the value of these resources and the critical importance of managing water quantity and quality ... -
Water and sediment quality and plankton diversity of Posna beel, Tangail.
(2007)Type: Journal ArticlePhysiochemical studies on water and sediment quality and plankton diversity of Posna beel, Kalihati, Tangail were conducted during 2003-2005. Surface water temperature was minimum (16°C) during winter and maximum (33 °C) ... -
Water for fish: Sustainable inland fisheries
(2018)Type: BlogWater for fish: Sustainable inland fisheries -
Water management and wise use of wetlands: enhancing productivity
(2006)Type: Book ChapterLakes and reservoirs are affected by human interventions mainly by eutrophication. Changes in morphology are less common, although siltation and local alterations to the riparian zone can result from urbanisation,marina ... -
Water quality in integrated livestock-fish ponds
(1983)Type: Journal ArticleWater quality variables were monitored during 3.5 years of research on pig-fish, duck-fish and chicken-fish systems. Early morning dissolved oxygen levels were often below 0.5 mg/1. Total ammonia levels were highest in ... -
Water quality management
(2022)Type: BriefIn fish culture, water quality is the degree of how conducive the water is for fish growth and the environmental conditions that affect it. Fish farmers need to have sufficient knowledge of water quality parameters, the ... -
Water quality research or water quality checking: proposed guidelines
(1990)Type: Journal ArticleA simple plan is outlined to assist in the design of water quality research and monitoring programmes at aquacultureresearch stations. Before monitoring any programme, a decision on the goals of the aquaculture research to ... -
Water quality, fish production and economics of Nile Tilapia, Oreochromis niloticus, and African catfish, Clarias gariepinus, monoculture and polyculture
(2010)Type: Journal ArticleTilapia is the main cultured fish species in Egypt, contributing 43.5% of farmed fish production and 24% of total fisheries production. The main problem facing tilapia producers is early reproduction before fish reach ... -
Water requirements of floodplain rivers and fisheries : existing decision support tools and pathways for development
(2007)Type: ReportThis report comprehensively reviews current environmental flow methodologies and fisheries production models to show that the combination of the DRIFT (Downstream Response to Imposed Flow Transformation) methodology and ... -
Water resources, forests and ecosystem goods and services
(2009)Type: Book ChapterThe chapter begins with an overview of the water system in the Congo Basin, presents a synopsis of select hydrological goods and services, describes the relationship between forests and water resources in large river systems ... -
Water use at integrated aquaculture-agriculture farms: experiences with limited water resources in Egypt
(2012)Type: Journal ArticleFish farming in Egypt is not formally recognized as an agricultural activity, so aquaculture cannot use water from irrigation canals. However, fish are raised as primary or secondary crops in combination with fruit and ... -
Water, poverty and inland fisheries: lessons from Africa and Asia
(2009)Type: Journal ArticleRelying on experience from West Africa and the Mekong Basin, the authors contend that small-scale inland fisheries are a critical element in the livelihoods of many farming households who live near water bodies in developing ...
