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Author: Wazir Singh Lakra
Publisher:
ISBN: 9788190554053
Category : Fishes
Languages : en
Pages : 20
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Book Description
Author: Wazir Singh Lakra
Publisher:
ISBN: 9788190554053
Category : Fishes
Languages : en
Pages : 20
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Book Description
Author: Nature Conservators (India)
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 450
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Book Description
Author: Gerry Closs
Publisher: Cambridge University Press
ISBN: 1107040116
Category : Nature
Languages : en
Pages : 601
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Book Description
A global assessment of the current state of freshwater fish biodiversity and the opportunities and challenges to conservation.
Author: Ambat Gopalan Kutty Menon
Publisher: Survey
ISBN:
Category : Nature
Languages : en
Pages : 416
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Book Description
Author: David Dudgeon
Publisher: Cambridge University Press
ISBN: 1108882625
Category : Nature
Languages : en
Pages : 517
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Book Description
Growing human populations and higher demands for water impose increasing impacts and stresses upon freshwater biodiversity. Their combined effects have made these animals more endangered than their terrestrial and marine counterparts. Overuse and contamination of water, overexploitation and overfishing, introduction of alien species, and alteration of natural flow regimes have led to a 'great thinning' and declines in abundance of freshwater animals, a 'great shrinking' in body size with reductions in large species, and a 'great mixing' whereby the spread of introduced species has tended to homogenize previously dissimilar communities in different parts of the world. Climate change and warming temperatures will alter global water availability, and exacerbate the other threat factors. What conservation action is needed to halt or reverse these trends, and preserve freshwater biodiversity in a rapidly changing world? This book offers the tools and approaches that can be deployed to help conserve freshwater biodiversity.
Author: David Dudgeon
Publisher: Taylor & Francis
ISBN: 1000629740
Category : Nature
Languages : en
Pages : 249
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Book Description
This book offers a comprehensive account of the current state of inland waters in tropical and subtropical East Asia, exploring a series of case studies of freshwater fish, reptiles, amphibians, birds, mammals and water bodies at particular risk. The book highlights the rich freshwater biodiversity of tropical East Asia and draws attention to the various threats it faces due to human activities and rapid environmental change. It addresses the question of whether the contributions of these animals and habitats, or biodiversity in general, to ecosystem functioning and service provision provide sufficient basis for arguments supporting nature conservation. Drawing on instances from the rivers and lakes of tropical East Asia, the book also asks whether the benefits accruing from intact ecosystems are likely to be enough to ensure their preservation. If the answer to either or both these questions is ‘no’, then what are the prospects for freshwater biodiversity in rapidly changing tropical East Asia? This book will be of interest to students and scholars of biodiversity, conservation, freshwater ecology, ecosystem services and Asian Studies.
Author: David James Allen
Publisher: IUCN
ISBN: 2831713242
Category : Freshwater biodiversity
Languages : en
Pages : 100
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Book Description
Author: Rohan Pethiyagoda
Publisher:
ISBN: 9789559114000
Category : Fishes
Languages : en
Pages : 362
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Book Description
Author: R. P. Barman
Publisher:
ISBN:
Category : Freshwater fishes
Languages : en
Pages : 64
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Book Description
Author: Arthur Kirchhofer
Publisher: Birkhäuser
ISBN: 3034890141
Category : Science
Languages : en
Pages : 340
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Book Description
Two events have recently improved the prospects of protecting fish and their environment in Switzerland: the acceptance of a new Federal Water Protection Law in the plebiscite of May 17th 1992, and the new Federal Legislation on Fisheries, in force since January 1st 1994. With this legal framework, the possibilities for protection of nature and landscape have now considerably improved in Switzerland. The most important aims of the Federal Law on Water Protection are to safeguard the natural habitats of the native flora and fauna and water as the habitat of aquatic organisms. This includes not only the preservation or restoration of water quality in lakes and rivers, but also, in rivers used for hydroelectricity, irrigation or as industrial or other water supplies, the maintenance of sufficient water to fulfill the minimal requirements for fish. However, good quality water in sufficient quan tities alone is not enough to guarantee the survival of fish. Intact fish habitats comprise various phYsical structures including plenty of hiding places, hunting grounds, reproduction and nursery areas within suitable distances from each other. This third aspect of conservation and restoration of aquatic habitats is a central point in the new Federal Law on Fisheries. Whereas the former versions of this law were more concerned with fishery regulations, the recent legislation defines new areas of responsibility for the federal and the cantonal governments.
