Selected Bibliography on the Sea Otter PDF Download
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Author: Ethel I. Todd
Publisher:
ISBN:
Category : Sea otter
Languages : en
Pages : 52
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Book Description
Bibliography stressing recent literature dealing with biology of the sea otter (Enhydra lutris).
Author: Ethel I. Todd
Publisher:
ISBN:
Category : Sea otter
Languages : en
Pages : 52
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Book Description
Bibliography stressing recent literature dealing with biology of the sea otter (Enhydra lutris).
Author:
Publisher:
ISBN:
Category : Marine mammals
Languages : en
Pages : 100
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Book Description
Author: Renn Tumlison
Publisher:
ISBN:
Category : North American river otter
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 978
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1388
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1408
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Book Description
Author:
Publisher:
ISBN:
Category : Technical reports
Languages : en
Pages : 506
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Book Description
Author:
Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 58
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Book Description
Author: James L. Ruos
Publisher:
ISBN:
Category : Bird populations
Languages : en
Pages : 638
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Book Description
U.S. mourning dove population indexes increased by 4% from 1969 to 1970 in the Eastern Management Unit, but declined 2% in the Central Management Unit and 11% in the Western Management Unit. The changes were below the 10-year means, 1960-69, by 3% in the Eastern Unit, 15% in the Central, and 27% in the Western. Regression analyses of the call-count data for 1960-70 indicate a statistically significant downward trend in dove breeding populations in all management units; mean rates of decline were 1% a year in the Eastern Unit, 3% a year in the Central, and 4% in the Western
Author: Todd McLeish
Publisher: Sasquatch Books
ISBN: 1632171384
Category : Nature
Languages : en
Pages : 272
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Book Description
A science journalist's journey along the Pacific Coast from California to Alaska to track the status, health, habits, personality, and viability of sea otters--the appealing species unique to this coastline that was hunted to near extinction in the 18th and 19th centuries. These adorable, furry marine mammals--often seen floating on their backs holding hands--reveal the health of the coastal ecosystem along the Pacific Ocean. Once hunted for their prized fur during the 1700s and 1800s, these animals nearly went extinct. Only now, nearly a century after hunting ceased, are populations showing stable growth in some places. Sea otters are a keystone species in coastal areas, feeding on sea urchins, clams, crab, and other crustaceans. When they are present, kelp beds are thick and healthy, providing homes for an array of sealife. When otters disappear, sea urchins take over, and the kelp disappears along with all of the creatures that live in the beds. Now, thanks to their protected status, sea otters are making a comeback in California, Washington, and Alaska.
