Population Demography of Northern Spotted Owls

£46.00

Usually dispatched within 4-7 days
Population Demography of Northern Spotted Owls Author: Format: Hardback First Published: Published By: University of California Press
string(3) "120"
Pages: 120 Illustrations and other contents: 20 line illustrations, 37 tables Language: English ISBN: 9780520270084 Categories: ,

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.

Weight0.499 kg
Author

Editor
Photographer
Format

Illustrators
Publisher

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

"One of the most exact and large-scale metapopulation analyses in the world." Luonnon Tutkija