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Book (series)A review of major river basins and large lakes relevant to inland fisheries 2021
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No results found.This review presents summary information on 45 river and great lake basins of the world, which support inland fisheries. The information presented is drawn from published information in peer-reviewed journals as well as grey literature. Each basin summary is presented in a common format, covering the description of the fishery, estimates of catch and numbers of people engaged in the fishery, important biodiversity features and threats to the fishery. An analysis of the replacement costs of inland fish of the basin is also presented. This is expressed in terms of the water, land and greenhouse gas footprint that would arise if the inland fish that are currently produced had to be replaced with other forms of food (such as aquaculture fish, livestock or field crops). -
Book (series)Habitat rehabilitation for inland fisheries. Global review of effectiveness and guidance for rehabilitation of freshwater ecosystems. 2005The degradation of aquatic habitats through decades of human activities has lead to large efforts to restore and rehabilitate freshwater habitats for fisheries and aquatic resources in watersheds throughout the world. This document reviews published evaluations of freshwater habitat rehabilitation projects including studies on roads and sediment reduction, riparian and floodplain rehabilitation, placement of habitat structures in lakes and streams, addition of nutrients to increase aquatic produ ction, as well as other less common techniques. It was difficult to draw firm conclusions about many specific techniques due to the limited information provided physical habitat, biota and costs as well as the short duration and scope of most published evaluations. However, techniques such as reconnection of isolated habitats, rehabilitation of floodplains, and placement of instream structures have clearly proven effective for improving habitat and increasing local fish abundance under many cir cumstances. Techniques that restore processes such as riparian rehabilitation, sediment reduction methods (road improvements), dam removal and restoration of floods also show promise but may take years or decades to detect a change in biota. Other techniques such as bank protection, beaver removal, and bank debrushing can produce positive effects for some species but more often produce negative impacts on biota or disrupt natural processes. Our review demonstrates that three key areas lacking i n rehabilitation activities: 1) adequate assessment of historic conditions, impaired ecosystem processes, and factors limiting biotic production; 2) understanding upstream or watershed-scale factors that may influence effectiveness of reach or localized rehabilitation techniques; and 3) well designed and funded monitoring and evaluation.
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Book (series)Proceedings of the Second International Symposium on the Management of Large Rivers for Fisheries (Volume I)
Sustaining Livelihoods and Biodiversity in the New Millennium, 11-14 February 2003
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No results found.Volume I of the proceedings on the above theme, which was held in Phnom Penh, Cambodia from 11 to 14 February 2003. The three primary objectives of the symposium were to provide a forum (i) to review and synthesize the latest information on large rivers; (ii) to raise the political, public and scientific awareness of the importance of river systems, the living aquatic resources they support and the people that depend on them; and (iii) to contribute to better management, conservation and restora tion of the living aquatic resources of large rivers. Over 220 river scientists and managers from around the world attended the symposium. Selected papers appearing in the proceedings represent 96 rivers from 61 river basins from all continents and climatic zones.
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