03804nam 2200637 a 450 991045681940332120200520144314.01-283-27862-697866132786230-520-95059-310.1525/9780520950597(CKB)2550000000039954(EBL)730036(OCoLC)745865766(SSID)ssj0000524939(PQKBManifestationID)11325124(PQKBTitleCode)TC0000524939(PQKBWorkID)10487847(PQKB)11423782(MiAaPQ)EBC730036(DE-B1597)521034(DE-B1597)9780520950597(Au-PeEL)EBL730036(CaPaEBR)ebr10482129(CaONFJC)MIL327862(EXLCZ)99255000000003995420101220d2011 uy 0engur|n|---|||||txtccrPopulation demography of northern spotted owls[electronic resource] /Eric D. Forsman ... [et al.]Berkeley University of California Pressc20111 online resource (119 p.)Studies in avian biology ;no. 40"A Publication of the Cooper Ornithological Society."0-520-27008-8 Includes bibliographical references and index.Frontmatter -- CONTENTS -- AUTHORS -- ACKNOWLEDGMENTS -- STUDY AREAS -- FIELD METHODS -- ANALYTICAL METHODS -- WORKSHOP PROTOCOLS -- RESULTS -- DISCUSSION -- SUMMARY, CONCLUSIONS, AND RECOMMENDATIONS -- APPENDICES -- LITERATURE CITED -- INDEX -- STUDIES IN AVIAN BIOLOGYThe 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. WhiteStudies in avian biology ;no. 40.Northern spotted owlBird populationsElectronic books.Northern spotted owl.Bird populations.598.9/7Forsman Eric D1042242MiAaPQMiAaPQMiAaPQBOOK9910456819403321Population demography of northern spotted owls2466331UNINA