Articles Selected From Archiwum Hydrobiologii I Rybactwa Gdynia Vol 13 1947 And Polskie Archiwum Hydrobiologii Warszawa Vol 1 14 1953 5 18 1958
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Articles Selected From Archiwum Hydrobiologii I Rybactwa Gdynia Vol 13 1947 And Polskie Archiwum Hydrobiologii Warszawa Vol 1 14 1953 5 18 1958
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Author :
language : en
Publisher:
Release Date : 1963
Articles Selected From Archiwum Hydrobiologii I Rybactwa Gdynia Vol 13 1947 And Polskie Archiwum Hydrobiologii Warszawa Vol 1 14 1953 5 18 1958 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Fisheries categories.
Dictionary Catalog Of The Department Library
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Author : United States. Department of the Interior. Library
language : en
Publisher:
Release Date : 1967
Dictionary Catalog Of The Department Library written by United States. Department of the Interior. Library and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Library catalogs categories.
National Union Catalog
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Author :
language : en
Publisher:
Release Date : 1956
National Union Catalog written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Union catalogs categories.
Includes entries for maps and atlases
The National Union Catalogs 1963
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Author :
language : en
Publisher:
Release Date : 1964
The National Union Catalogs 1963 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with American literature categories.
Bibliografia Bibliografii I Nauki O Ksi Ce
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Author :
language : pl
Publisher:
Release Date : 1967
Bibliografia Bibliografii I Nauki O Ksi Ce written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Bibliographical literature categories.
Sturgeon Biodiversity And Conservation
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Author : Vadim J. Birstein
language : en
Publisher: Springer Science & Business Media
Release Date : 1997-05-31
Sturgeon Biodiversity And Conservation written by Vadim J. Birstein and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-05-31 with Nature categories.
This volume presents a synthesis of basic biological and conservation data for more than 30 species of sturgeons (Acipenseridae), paddlefishes (Polyodontidae) and their fossil allies in the order Acipenseriformes. Since the Jurassic, the four families of sturgeon-like fish have been restricted to the Holarctic, where until very recently they flourished in most major river systems. Today, however, virtually all species of sturgeons and paddlefishes face difficult conservation issues. Papers in the first section of this volume examine paleontology, systematics, evolution and basic biology of Acipenseriformes. The second section of this volume details current conservation status for most of the world's living species of Acipenseriformes. These papers mark the first attempt to make such a global review of recent data from across the northern hemisphere. The emerging picture is discouraging, for negative anthropogenic impacts range from overfishing to water pollution, to dams and water diversion projects, and all species are threatened to some degree. The third section of the volume considers specific human impacts and responses to conservation issues. These include: the Aral Sea ecological disaster and its impact on native sturgeons; a review of methods for restoring sturgeon populations; the use of molecular techniques in developing conservation strategies; the extreme sensitivity of sturgeons and paddlefishes to overfishing; and the history of a recently convicted caviar poaching ring. The volume's summary reviews the status of all extant species and notes future directions for research on behavior, ecology and population biology that could lead to better co-ordinated international conservation efforts.
Conservation Of Endangered Freshwater Fish In Europe
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Author : Arthur Kirchhofer
language : en
Publisher: Birkhäuser
Release Date : 2012-12-06
Conservation Of Endangered Freshwater Fish In Europe written by Arthur Kirchhofer and has been published by Birkhäuser this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
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.
Frontiers In Geographical Teaching
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Author : Richard J. Chorley
language : en
Publisher: Routledge
Release Date : 2020-11
Frontiers In Geographical Teaching written by Richard J. Chorley and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11 with Geography categories.
Originally published in 1965; second edition1970. Originally receiving a hostile reaction from British journals, the book's diagnosis and prognosis were a forerunner of developments in methodological changes of the discipline. It collects a series of essays looking at geographic concepts, techniques, and teaching methods and courses.
The Greenland Entomofauna
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Author : Jens Böcher
language : en
Publisher: BRILL
Release Date : 2015-05-26
The Greenland Entomofauna written by Jens Böcher and has been published by BRILL this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-26 with Science categories.
In The Greenland Entomofauna an international team of 64 taxonomic specialists provide for the first time a richly illustrated guide to the identification of the ≈1200 species of Hexapods/Insects, Arachnids and Myriapods so far known to occur in the country. While the composition, origin and adaptations of the Greenland fauna has always been a challenge to biogeographers and ecologists/ecophysiologists, the provision of a tool for detailed identification of its constituent species is now particularly timely, since global climate change will expectedly have a particularly noticeable impact on biota at high latitudes. This obviously renders the feasibility of monitoring distributional range shifts of the principal components of this biota a matter of some urgency. Contributors are: Achterberg, Cornelius van; Ahola, Matti; Barták, Miroslav; Behan-Pelletier, Valerie; Bird, Jeremy M.; Bøg, Katrine; Brodo, Fenja; Buhl, Peter N.; Dahl, Christine; Disney, R. Henry L.; Dittmar, Katharina; Fjellberg, Arne; Gammelmo, Øivind; Forshage, Mattias; Gerecke, Reinhard; Gertsson, Carl-Axel; Haastriter, Michael M.L.; Haenni, Jean-Paul; Heie, Ole E.; Heraty, John M.; Hodgson, Chris; Hodkinson, Ian D.; Horsfield, David; Huber, John T.; Jaschoff, Matthias; Jensen, Frank; Johanson, Kjell A.; Jussila, Reijo; Karsholt, Ole; Krzeminska, Ewa; Lantsov, Vladimir I.; Láska, Pavel; Lindegaard, Claus; Lyneborg, Leif (†); Makarova, Olga; Marusik, Yura M.; Mathis, Wayne N.; Mazánek, Libor; Michelsen, Verner; Munk, Thorkild (†); Murphy, William L.; Nielsen, Søren A.; Nielsen, Tore R.; Noyes, John S.; Oosterbroek, Pjotr; Ozerov, Andrey L.; Pape, Thomas; Pinto, John D.; Pollet, Marc; Rindal, Eirik; Rohácek, Jindrich; Simonsen, Thomas J.; Smith, Vincent S.; Söli, Geir; Starý, Jaroslav; Strassen, Richard zur; Svensson, Bo. W.; Vilhelmsen, Lars; Vilkamaa, Pekka; Wilson, Michael; Zatwarnicki, Tadeusz
Threatened Freshwater Fishes Of Europe
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Author : Anton Lelek
language : en
Publisher:
Release Date : 1980
Threatened Freshwater Fishes Of Europe written by Anton Lelek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Endangered species categories.