L'élevage et la pêche de la truite et autres poissons d'eau douce ... Avec 55 figures dans le texte PDF Download

Author: Henry de GRAFFIGNY (pseud. [i.e. Raoul Marquis.])
Publisher:
ISBN:
Category :
Languages : fr
Pages : 268

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Author: Henry de Graffigny
Publisher:
ISBN:
Category :
Languages : fr
Pages : 272

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Author: Alphonse Gobin
Publisher:
ISBN:
Category : Fish-culture
Languages : fr
Pages : 368

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Author: Robert Villatte des Prugnes
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

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Author: Philippe Gaspard Gauckler
Publisher: Legare Street Press
ISBN: 9781022631250
Category :
Languages : fr
Pages : 0

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Ce livre présente une étude détaillée des poissons d'eau douce et de leur élevage en pisciculture. Il fournit des informations précieuses sur les différentes espèces de poissons, leur environnement naturel, leur alimentation, leur reproduction et leur élevage en captivité. Des méthodes de pêche et de gestion des stocks de poissons sont également décrites en détail. Cet ouvrage est indispensable pour tous les amoureux de la pêche et de l'élevage de poissons. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author:
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Category :
Languages : fr
Pages : 0

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Author: Bashford Dean
Publisher:
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Category : Fishes
Languages : en
Pages : 750

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Author: National Research Council Canada
Publisher: NRC Research Press
ISBN: 9780660149547
Category : Technology & Engineering
Languages : en
Pages : 276

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Up-to-date information, knowledge and research in progress in scientific fields related to natural production of juvenile Atlantic salmon and some other ecologically similar fluvial salmonids is contained in the 25 papers and 12 abstracts contained in this publication, which were prepared for an international symposium held in St. John's, Newfoundland. Studies relate to stream ecology, invertebrates and predators, habitat improvement, competitive effects, behaviour and dispersal, habitat and production of juvenile salmon, population dynamics and relationships of juvenile salmon estimates to smolt yields. A list of participants at the conference is also provided.

Author: Arthur Kirchhofer
Publisher: Birkhäuser
ISBN: 3034890141
Category : Science
Languages : en
Pages : 340

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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.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251045411
Category : Business & Economics
Languages : en
Pages : 20

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The actual Code of conduct is also available (1996) (ISBN 9251038341).