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Book (series)Consequences of biomanipulation for fish and fisheries 2001
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No results found.The main goal of biomanipulation by fish reduction is not a change in the fish community but a change in the aquatic ecosystem. Fish reduction is a method to push the system in another state, usually a shift from algae domination to macrophyte domination. Intensive fish removal is done by one of the following methods: seining (the Netherlands, Germany, UK), trawling (Sweden, Finland), use of rotenone (Norway, USA, Poland) and stocking of piscivorous fish (USA, Germany). If circumstances allow it (reservoir, ponds) draining is combined with seining (the Netherlands, UK, Poland). The intensity and duration of fishing differs per case, but is quite important for the way the system changes. Fishing may be combined with stocking of predatory fish, mainly pike and pikeperch (or walleye)...... -
No Thumbnail AvailableBook (series)Reservoir fisheries of India 1995
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No results found.The existing literature on limnology and fisheries of Indian reservoirs has been reviewed by covering more than 100 reservoirs located in various parts of the country. An assessment of environment-mediated production functions of reservoirs has been attempted. Since the ecosystem processes in reservoirs belonging to different geo-climatic regions exhibit wide variations depending on meteorological, morphometric and hydro-edaphic features of the impoundments, an effort has been made to gauge the influence of these abiotic variables on the production dynamics. Authentic information on water areas under different categories of reservoirs has been collected and interpreted in respect of all the Indian States. An attempt has also been made to resolve the anomalies pertaining to classification and nomenclature to the extent possible. Various fisheries management norms followed in the reservoirs of the country including the selection of species for stocking, stocking rate and introduction of exotic species have been reviewed. Indian reservoirs have been stocked with the Indo-Gangetic carps for many decades and the impact of this stocking has been assessed in terms of fish production and the indigenous faunistic diversity. -
No Thumbnail AvailableBook (series)Management of Asian reservoir fisheries. 1980
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No results found.An increasing number of impoundments in Southeast Asian countries is now becoming available for fishery management purposes. This report is an overview of reservoir fisheries experience, based both on temperate and tropical countries. It provides a synthesis of information of fish population studies, including predictions of fish potential yield, alternatives for management of fish populations and for management of the habitat. It should assist in planning fishery management strategies for new r eservoirs, and improve the management of existing reservoir fisheries in Southeast Asia.
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