Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1000

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Author: Samuel Frederick Hildebrand
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 424

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Author: Vadim J. Birstein
Publisher: Springer Science & Business Media
ISBN: 0792345177
Category : Nature
Languages : en
Pages : 444

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Book Description
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.

Author: C. Richard Robins
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395975152
Category : Nature
Languages : en
Pages : 508

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The more than 1,000 species descriptions in this guide include information on range and habitat such as depths, bottom types, water temperatures, and salinity. The almost 1,100 illustrations use the Peterson Identification System for quick, accurate field identification.

Author: F.P. Binkowski
Publisher: Springer
ISBN: 9061935393
Category : Science
Languages : en
Pages : 157

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Proceedings from a Symposium on Biology and Management of Sturgeon, held during the 113th Annual Meeting of American Fisheries Society at Milwaukee, Wisconsin, USA, August 16-20, 1983

Author: Tatiana A. Dettlaff
Publisher: Springer Science & Business Media
ISBN: 3642770576
Category : Science
Languages : en
Pages : 309

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Book Description
This book is the first comprehensive description of development of the Acipenserid fish published in the English language. It con tains the results of more than 40 years of studies by the authors and their colleagues. My own life in science has been intimately related both with the authors and the fish, which are the subject of this book. Therefore, it gives me a great pleasure to present to the English reader an expanded version of the book. Those interested in the history of biology must be well aware of the fact that genetics in the USSR was practically demolished by Lysenko at the session of the Lenin All-Union Academy of Agricultural Sciences in 1948. However, it is much less well known that other fundamental branches of biology were also persecuted at that time, experimental embryology (developmental mechanics) among them. As a result, many embryologists, in cluding the authors of this book, were forced to turn to more ap plied problems, this being the only way to continue research. They had to abandon amphibians and concentrate their efforts on sturgeon.

Author: United States. Army. Corps of Engineers
Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 232

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Author: Andrew P. Hendry
Publisher: Princeton University Press
ISBN: 0691204179
Category : Science
Languages : en
Pages : 410

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In recent years, scientists have realized that evolution can occur on timescales much shorter than the 'long lapse of ages' emphasized by Darwin - in fact, evolutionary change is occurring all around us all the time. This work provides an authoritative and accessible introduction to eco-evolutionary dynamics, a cutting-edge new field that seeks to unify evolution and ecology into a common conceptual framework focusing on rapid and dynamic environmental and evolutionary change.

Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 316

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Author: John Tee-Van
Publisher:
ISBN:
Category :
Languages : en
Pages :

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