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Author: Juan Darío Restrepo Ángel
Publisher: Universidad Eafit
ISBN: 9588173906
Category : Magdalena River (Colombia)
Languages : es
Pages : 273
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Book Description
Author: Juan Darío Restrepo Ángel
Publisher: Universidad Eafit
ISBN: 9588173906
Category : Magdalena River (Colombia)
Languages : es
Pages : 273
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Book Description
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 852
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Book Description
Author: Ainsworth, R., Cowx, I.G., Funge-Smith, S.J.
Publisher: Food & Agriculture Org.
ISBN: 9251338264
Category : Technology & Engineering
Languages : en
Pages : 325
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Book Description
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).
Author: John F. Craig
Publisher: John Wiley & Sons
ISBN: 1118394402
Category : Technology & Engineering
Languages : en
Pages : 920
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Book Description
Inland fisheries are vital for the livelihoods and food resources of humans worldwide but their importance is underestimated, probably because large numbers of small, local operators are involved. Freshwater Fisheries Ecology defines what we have globally, what we are going to lose and mitigate for, and what, given the right tools, we can save. To estimate potential production, the dynamics of freshwater ecosystems (rivers, lakes and estuaries) need to be understood. These dynamics are diverse, as are the earths freshwater fisheries resources (from boreal to tropical regions), and these influence how fisheries are both utilized and abused. Three main types of fisheries are illustrated within the book: artisanal, commercial and recreational, and the tools which have evolved for fisheries governance and management, including assessment methods, are described. The book also covers in detail fisheries development, providing information on improving fisheries through environmental and habitat evaluation, enhancement and rehabilitation, aquaculture, genetically modified fishes and sustainability. The book thoroughly reviews the negative impacts on fisheries including excessive harvesting, climate change, toxicology, impoundments, barriers and abstractions, non-native species and eutrophication. Finally, key areas of future research are outlined. Freshwater Fisheries Ecology is truly a landmark publication, containing contributions from over 100 leading experts and supported by the Fisheries Society of the British Isles. The global approach makes this book essential reading for fish biologists, fisheries scientists and ecologists and upper level students in these disciplines. Libraries in all universities and research establishments where biological and fisheries sciences are studied and taught should have multiple copies of this hugely valuable resource. About the Editor John Craig is Editor-in-Chief of the Journal of Fish Biology and has an enormous range of expertise and a wealth of knowledge of freshwater fishes and their ecology, having studied them around the globe, including in Asia, North America, Africa, the Middle East and Europe. His particular interests have been in population dynamics and life history strategies. He is a Fellow of the Linnean Society of London and the Royal Society of Biology.
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Category : Geology
Languages : es
Pages : 444
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Languages : en
Pages : 1146
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Languages : en
Pages : 1136
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Category : Anthropology
Languages : en
Pages : 1136
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Category : International law
Languages : en
Pages : 1134
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Category : Science
Languages : en
Pages : 1152
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