Author: Publisher:
ISBN:
Category : Salmon fisheries
Languages : en
Pages : 530
Book Description
The Salmon and Trout Magazine
Author: General catalogue of printed books
Author: British museum. Dept. of printed booksPublisher:
ISBN:
Category :
Languages : en
Pages : 532
Book Description
General Catalogue of Printed Books
Author: British Museum. Department of Printed BooksPublisher:
ISBN:
Category : English imprints
Languages : en
Pages : 528
Book Description
Illustrated Sporting & Dramatic News
Author: General Catalogue of Printed Books to 1955
Author: British Museum. Dept. of Printed BooksPublisher:
ISBN:
Category : English imprints
Languages : en
Pages : 1306
Book Description
Pamphlets on Biology
Author: Computation and Interpretation of Biological Statistics of Fish Populations
Author: William Edwin RickerPublisher:
ISBN: 9781932846232
Category : Technology & Engineering
Languages : en
Pages : 0
Book Description
Computation and Interpretation of Biological Statistics of Fish Populations, first published in 1975, deals with the general field of biological statistics of fish populations. It is a compilation of the more important procedures used to estimate abundance, age composition, rate of growth, and mortality rates in fish populations, with working examples of all the computations. Computation and Interpretation of Biological Statistics of Fish Populations is one of the most highly cited scientific references in the field of fisheries.
The Harvest of the Sea
Author: James Glass BertramPublisher:
ISBN:
Category : Fish-culture
Languages : en
Pages : 586
Book Description
Dictionary Catalog of the Department Library
Author: United States. Department of the Interior. LibraryPublisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 804
Book Description
Conservation of Endangered Freshwater Fish in Europe
Author: Arthur KirchhoferPublisher: Birkhäuser
ISBN: 3034890141
Category : Science
Languages : en
Pages : 340
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.