Status and Trends in Demography of Northern Spotted Owls, 1985-2003 PDF Download
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Author:
Publisher:
ISBN:
Category : Northern spotted owl
Languages : en
Pages : 22
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Author:
Publisher:
ISBN:
Category : Northern spotted owl
Languages : en
Pages : 22
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Book Description
Author: Robert Gene Anthony
Publisher:
ISBN:
Category : Northern spotted owl
Languages : en
Pages : 52
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Book Description
"We analyzed demographic data from northern spotted owls (Strix occidentalis caurina) from 12 study areas in Washington, Oregon, California for 1985-2003. The purpose of our analyses was to provide an assessment of the status and trends of northern spotted owl populations throughout most of their geographic range"--Page 2.
Author: Eric Forsman
Publisher: Univ of California Press
ISBN: 0520950593
Category : Science
Languages : en
Pages : 119
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Book Description
The Northern Spotted Owl, a threatened species that occurs in coniferous forests in the western United States, has become a well-known environmental symbol. But how is the owl actually faring? This book contains the results of a long-term effort by a large group of leading researchers to document population trends of the Northern Spotted Owl. The study was conducted on 11 areas in the Pacific Northwest from 1985 to 2008, and its objectives were both to evaluate population trends and to assess relationships between reproductive rates and recruitment of owls and covariates such as weather, habitat, and the invasion of a closely related species, the Barred Owl. Among other findings, the study shows that fecundity was declining in five populations, stable in three, and increasing in three areas. Annual apparent survival rates of adults were declining in 10 out of 11 areas. This broad, synthetic work provides the most complete and up-to-date picture of the population status of this inconspicuous forest owl, which is at the center of the complex and often volatile debate regarding the management of forest lands in the western United States. Researchers: Steven H. Ackers Lawrence S. Andrews David R. Anderson Robert G. Anthony Brian L. Biswell Kenneth P. Burnham Peter C. Carlson Raymond J. Davis Lowell V. Diller Katie M. Dugger Eric D. Forsman Alan B. Franklin Elizabeth M. Glenn Scott A. Gremel Dale R. Herter J. Mark Higley James E. Hines Robert B. Horn Joseph B. Lint James D. Nichols Janice A. Reid James P. Schaberl Carl J. Schwarz Thomas J. Snetsinger Stan G. Sovern Gary C. White
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 686
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Author: Joseph Lint
Publisher:
ISBN:
Category : Northern spotted owl
Languages : en
Pages : 188
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Author:
Publisher:
ISBN:
Category : Biodiversity conservation
Languages : en
Pages : 318
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Author: Joseph Lint
Publisher:
ISBN:
Category : Northern spotted owl
Languages : en
Pages : 176
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 380
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 482
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