Septage Treatment and Disposal PDF Download
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Author: Ivan A. Cooper
Publisher:
ISBN:
Category : Sewage disposal
Languages : en
Pages : 48
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Book Description
Author: Ivan A. Cooper
Publisher:
ISBN:
Category : Sewage disposal
Languages : en
Pages : 48
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Book Description
Author: Beth A. K. Coughlan
Publisher:
ISBN: 9780160246869
Category : Bird banding
Languages : en
Pages : 14
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Book Description
Author: Kevin Summers
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 232
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Book Description
Author: David Starr Jordan
Publisher: BoD – Books on Demand
ISBN: 3734012414
Category : Fiction
Languages : en
Pages : 713
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Book Description
Reproduction of the original: A Guide to the Study of Fishes by David Starr Jordan
Author: Howard T. Odum
Publisher: Conservation Foundation
ISBN: 9780891640189
Category : Coastal ecology
Languages : en
Pages : 1977
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Book Description
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1000
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Book Description
Author: Corvallis Environmental Research Laboratory
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 114
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Book Description
Author: Ronald C. Phillips
Publisher:
ISBN:
Category : Coastal ecology
Languages : en
Pages : 104
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Book Description
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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Book Description
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.
