Title Population demography of northern spotted owls / Eric D. Forsman [and others]

Published Berkeley : University of California Press, ©2011

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Description 1 online resource (xii, 106 pages) : illustrations, map Series Studies in avian biology ; no. 40 Studies in avian biology ; no. 40 Contents Cover; Contents; Authors; Acknowledgments; Abstract; Study Areas; Field Methods; Analytical Methods; Development of Covariates; Barred Owl Covariate; Habitat Covariates; Weather and Climate Covariates; Land Ownership, Ecoregion, and Latitude Covariates; Reproduction Covariate; Fecundity; Individual Study Areas; Meta-analysis of Fecundity; Apparent Survival; Individual Study Areas; Meta-analysis of Apparent Survival; Annual Rate of Population Change (?); Individual Study Areas; Estimates of Realized Population Change; Meta-analysis of Annual Rate of Population Change; Statistical Conventions Workshop ProtocolsResults; Fecundity; Individual Study Areas; Meta-analysis of Fecundity; Apparent Survival; Individual Study Areas; Meta-analysis of Apparent Survival on All Areas; Meta-analysis of Apparent Survival on the Eight NWFP Monitoring Areas; Potential Cost of Reproduction on Survival; Effects of Barred Owls on Recapture and Survival; Annual Rate of Population Change; Individual Study Areas; Estimates of Realized Population Change; Meta-analysis of Annual Rate of Population Change; Discussion; Fecundity; Apparent Survival Annual Rate of Population Change and Realized Rates of Population ChangeIndividual Study Areas; Meta-analysis of Annual Rate of Population Change; Status of Owl Populations in the Eight NWFP Monitoring Areas; Associations Between Demographic Parameters and Covariates; Cost of Reproduction on Survival; Weather and Climate; Barred Owls; Habitat; Potential Biases in Estimates of Demographic Parameters; Fecundity; Apparent Survival; Annual Rate of Population Change; Estimating Goodness-of-Fit and Overdispersion; Summary, Conclusions, and Recommendations; Appendices; Literature Cited; Index Summary "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."--Provided by publisher Bibliography Includes bibliographical references and index Notes English Print version record Subject Northern spotted owl. Bird populations. NATURE -- Animals -- Birds. NATURE -- Birdwatching Guides. SCIENCE -- Life Sciences -- Zoology -- Ornithology. Bird populations Northern spotted owl Form Electronic book Author Forsman, Eric D. LC no. 2010048821 ISBN 9780520950597 0520950593 1283278626 9781283278621 9786613278623 6613278629

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