Asteroidea of the North Pacific and Adjacent Waters, Vol. 1 (Classic Reprint)
Asteroidea of the North Pacific and Adjacent Waters, Vol. 1 (Classic Reprint)

Author: Walter Kenrick Fisher

Publisher: Forgotten Books

Published: 2017-12-03

Total Pages: 672

ISBN-13: 9780260432735

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Excerpt from Asteroidea of the North Pacific and Adjacent Waters, Vol. 1 The material proved to be richer than was anticipated, and it has been meces sary to issue the work in two parts, of which this is Part 1. Part 2 will contain an account of the order Forcipulata. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Conservation of Endangered Freshwater Fish in Europe
Conservation of Endangered Freshwater Fish in Europe

Author: Arthur Kirchhofer

Publisher: Birkhäuser

Published: 2012-12-06

Total Pages: 340

ISBN-13: 3034890141

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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.