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Author: Gerd Marmulla Publisher: Food & Agriculture Organization of the UN (FAO) ISBN: 9789251048948 Category : Fish habitat improvement Languages : en Pages : 118
Book Description
Many fish species, like salmon and sturgeon, undertake extended migrations as part of their basic behavior, and other fish and invertebrates also undertake short-term or small-scale migrations at certain phases of their life cycles. Activities such as dam construction for water supply and power generation, channelization for navigation and flood control, land drainage and wetland reclamation for agricultural and urban use all have profound impact on the aquatic ecosystem and thus on natural fish populations. Fish passes are often the only way to make it possible for aquatic fauna to pass obstacles that block their up-river journey. Based on knowledge and experience from mainly Europe and North America, this book describes the various types of fish passes, with special emphasis to "close-to-nature" solutions.
Author: Gerd Marmulla Publisher: Food & Agriculture Organization of the UN (FAO) ISBN: 9789251048948 Category : Fish habitat improvement Languages : en Pages : 118
Book Description
Many fish species, like salmon and sturgeon, undertake extended migrations as part of their basic behavior, and other fish and invertebrates also undertake short-term or small-scale migrations at certain phases of their life cycles. Activities such as dam construction for water supply and power generation, channelization for navigation and flood control, land drainage and wetland reclamation for agricultural and urban use all have profound impact on the aquatic ecosystem and thus on natural fish populations. Fish passes are often the only way to make it possible for aquatic fauna to pass obstacles that block their up-river journey. Based on knowledge and experience from mainly Europe and North America, this book describes the various types of fish passes, with special emphasis to "close-to-nature" solutions.
Author: Food and Agriculture Organization of the United Nations Publisher: Food & Agriculture Org. ISBN: 9789251046944 Category : Business & Economics Languages : en Pages : 180
Book Description
The importance of free longitudinal passage of river fauna is stressed.
Author: Martyn Lucas Publisher: John Wiley & Sons ISBN: 0470999640 Category : Technology & Engineering Languages : en Pages : 440
Book Description
Recent studies have increasingly demonstrated the widespread existence of spatio-temporal variations in the abundance and distribution of species of freshwater fishes, previously assumed not to move between habitats. These movements are often on a seasonal or ontogenetic basis, for spawning, feeding and refuge, and in many cases are fundamental for the successful completion of lifecycles. This important book provides a single source for a range of previously widely dispersed information on these movements of fish in fresh waters, covering potamodromous fishes as well as the more familiar diadromous species, worldwide. Contents include full descriptions of types of migration and spatial behaviour, the stimulus and capacity for fish to migrate, the effects of climate on patterns of migratory behaviour, a taxonomic analysis (mostly by family) of freshwater fish migration, methods for studying migration, and details of the impacts of man's activities on freshwater fish migration. Migration of Freshwater Fishes provides an excellent and comprehensive reference to which the river manager, biologist or student can now refer to obtain information, advice and current opinion on the migratory behaviour of most taxonomic groups of fishes occurring in fresh water. University libraries and aquatic research stations should also have copies of this essential reference book on their shelves. Well-known international authors. Of great commercial importance to fisheries and professional angling bodies. Draws together much new information in one place. Detailed review of world wide migratory behaviour for most groups of freshwater fishes. Pure and applied relevance, for academics, fisheries scientists, river managers and conservationists. This comprehensive book includes 67 tables and figures and over 1,400 references.
Author: Satish Chander Agarwal Publisher: CRC Press ISBN: 1000373886 Category : Science Languages : en Pages : 429
Book Description
In all the developing countries, the vast natural resource have great potentials for the production of fish. Natural water resource are categorized on the basis of altitude, temperature and salinity. The different fish species have adopted as per water ecosystem. Out of identified about 22000 fish species, only 10% belongs to freshwater. Only 107 species have been found suitable as culturable. Hence, major chunk of fish are not cultured by man but used by him as food or other uses. It is therefore, the natural fisheries is very important for human being and proper management and legislation are needed to have the sustainable production. The text of the book is written in simple language so as understandable by scientists, extension workers, students and farmers. References and literature for further reading have been given in the end. Note: T&F does not sell or distribute the Hardback in India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka.
Author: Gerd Marmulla
Author: Gerd Marmulla
Author: Great Britain
Author: Food and Agriculture Organization of the United Nations
Author: American Fisheries Society
Author: U.S. Fish and Wildlife Service
Author: World Commission on Dams
Author: Martyn Lucas
Author: Eva B. Thorstad
Author: Francis Day
Author: Satish Chander Agarwal