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Zusatztext "One of the most exact and large-scale metapopulation analyses in the world." Informationen zum Autor Eric D. Forsman ! who collaborated with a team of twenty-seven researchers to produce this report! is a Wildlife Biologist with the USDA Forest Service's Pacific Northwest Research Station! and also holds a courtesy faculty position as an Associate Professor in the Department of Fisheries and Wildlife at Oregon State University. Klappentext "In addition to state of the art analysis of huge datasets! this monograph provides a wonderful example of cooperation among scientists and field biologists to achieve a common goal. The monograph provides an analysis template for any species whose conservation is controversial or its population analysis challenging. Therefore! it is a must-read for all population ecologists! wildlife biologists and managers! conservation biologists! and graduate students in these fields."-R.J. Gutiérrez! University of Minnesota "This state-of-the-art examination of the demography of the Northern Spotted Owl serves as a model of the information needed for truly scientific conservation of at-risk species. If only we could gather similar information for all plants and animals facing uncertain futures."-John Faaborg! University of Missouri at Columbia "This book on demography of spotted owl populations is an excellent and comprehensive contribution to the literature on ecology and conservation of owls. It warrants to be read by all biologists and naturalists interested in fascinating raptors and owls"--Erkki Korpimäki! University of Turku! Finland Zusammenfassung 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. Inhaltsverzeichnis INTRODUCTION 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 PROTOCOLS RESULTS 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 CHANGE Individual 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 ...
