Dams, Fish and Fisheries PDF Download
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Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251046944
Category : Business & Economics
Languages : en
Pages : 180
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Book Description
The importance of free longitudinal passage of river fauna is stressed.
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Category : Fishery management
Languages : en
Pages : 420
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Book Description
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Category : Forests and forestry
Languages : en
Pages : 432
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Book Description
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Category : Forests and forestry
Languages : en
Pages : 20
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Book Description
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Category : Forests and forestry
Languages : en
Pages : 718
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Book Description
Author: James L. Cooper
Publisher: DIANE Publishing
ISBN: 0788182447
Category :
Languages : en
Pages : 416
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Book Description
Proceedings of a symposium on warmwater fisheries held by the U.S. Forest Service at Scottsdale, AZ on June 4-8, 1991. Panels include: management opportunities and challenges: keys to better service; warmwater fisheries: a resource to be managed; artificial structures -- where they work and how to build them; where the fish come from; water level management; warmwater streams -- a strong current for quality management; non-traditional fishing holes; fertilization and forage fish management; hooking mortality; harvest regulations; recreational fishing; and the role of education in fisheries management. Illustrated.
Author: Robert Wallus
Publisher: CRC Press
ISBN: 1420003615
Category : Nature
Languages : en
Pages : 474
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Book Description
This seven-volume series is the most extensive treatise on early life histories of the freshwater fishes of North America. It represents the state-of-the-art in fishery biology and provides a systematic approach to the study of early life histories of all the fishes in this region. Each volume contains distinguishing characteristics and a pictorial
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Category : Agriculture
Languages : en
Pages : 520
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Book Description
Set includes revised editions of some issues.
Author: C.S. Tucker
Publisher: Elsevier
ISBN: 0080472206
Category : Technology & Engineering
Languages : en
Pages : 686
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Book Description
The history of channel catfish farming in the United States serves as a model for the development of pond-based aquaculture industries worldwide. Channel catfish farming is the largest and economically most important aquaculture industry in the United States. In 2003, over 300,000 metric tons (662 million pounds) of channel catfish were processed, representing about half the total United States aquaculture production. Demand for farm-raised catfish is strong, with record processing years in 2002 and 2003. In 22 chapters written by active scientists in the field, Biology and Culture of Channel Catfish comprehensively synthesizes over 30 years of research on this American icon. Throughout the book, fundamental biological aspects of channel catfish are linked to practical culture techniques. Topics include: • Latest information on reproductive physiology, genetics, and breeding • Comprehensive treatment of catfish nutrition, feeds, and feeding practices • Water quality management and pond dynamics • In-depth review of immunology in channel catfish • Practical information on diseases and health management • Techniques for commercial culture, including innovative techniques such as raceways, recirculating systems, and partitioned aquaculture systems • Catfish economics and marketing • Exploration of environmental concerns, including recommended Best Management Practices
Author: Albert E. Cowdrey
Publisher: University Press of Kentucky
ISBN: 9780813108513
Category : Science
Languages : en
Pages : 260
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Book Description
Here is the story of the long interaction between humans, land, and climate in the American South. It is a tale of exploitation and erosion, of destruction, disease, and defeat, but also of the persistent search for knowledge and wisdom. It is a story whose villains were also its victims and sometimes its heroes. Ancient forces created the southern landscape, but, as Albert E. Cowdrey shows, humankind from the time of earliest habitation has been at work reshaping it. The southern Indians, far from being the "natural ecologists" of myth, radically transformed their environment by hunting and burning. Such patterns were greatly accelerated by the arrival of Europeans, who viewed the land as a commodity to be exploited for immediate economic benefit. Cowdrey documents not only the long decline but the painfully slow struggle to repair the damage of human folly. The eighteenth century saw widespread though ineffectual efforts to protect game and conserve the soil. In the nineteenth century the first hesitant steps were taken toward scientific flood control, forestry, wildlife protection, and improved medicine. In this century, the New Deal, the explosion in scientific knowledge, and the national environmental movement have spurred more rapid improvements. But the efforts to harness the South's great rivers, to save its wild species, and to avert serious environmental pollution have often had equivocal results. Originally published in 1983 and needed now more than ever, This Land, This South was the first book to explore the cumulative impact of humans on the southern landscape and its effect on them. In graceful and at times lyrical prose, Albert Cowdrey brings together a vast array of information. Now revised and updated, this important book should be read by every person concerned with the past, present, or future of the South.
Author: A. Dennis Lemly
Publisher: Springer Science & Business Media
ISBN: 1461300738
Category : Science
Languages : en
Pages : 184
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Book Description
Selenium is a naturally occurring trace element that can become concentrated and released by industrial, agricultural, petrochemical and mining activities. At concentrated levels it is toxic and has polluted ecosystems around the world. This book will serve as a comprehensive practical handbook for everyone dealing with selenium in aquatic environments. It offers field-tested approaches and methods for assessment and water quality management. Using his twenty-year experience, the author discusses the effects of selenium on fish and bird populations and presents guidelines for identifying sources of pollution, interpreting selenium concentrations, assessing hazardous conditions, setting water quality criteria and ecosystem loading limits (TMDLs). He also includes a procedure for setting environmentally safe limits that ensure compliance with EPA regulations. Selenium Assessment in Aquatic Ecosystems will interest field scientists, natural resource managers, risk assessors and environmental planners.
