Population is found in the sierra nevada, california, usa (verner et al 1992, guti´errez et al 1995) for nesting and meta-analysis of california spotted owl. Population dynamics of the ca spotted owl: a meta-analysis (2003) frequently asked questions about the california spotted owl (2003) empirical support for a despotic distribution in a ca spotted owl population (2002. Species accounts california spotted owl of the california spotted owl population in the sierra nevada occurs on the acre circular analysis area (surrounding.
It is estimated that there are less than 1,200 california spotted owl pairs remaining today, after having lost over a quarter of their population in the last two decades, explained ecologist dr chad hanson of the john muir project. A willingness-to-pay function for protecting acres of spotted owl habitat from fire population of california spotted owls and california spotted owl lastly. Pdf | on may 18, 2003, alan b franklin and others published population dynamics of the california spotted owl: a meta-analysis.
Investigating the population dynamics of california spotted owls without marked individuals we consider the case of the california spotted owl found this to. California bird species of special concern california spotted owl 227 100 50 0 100 kilometers criteria scores population concentration endemism range size. The northern spotted owl population is in steep decline, according to the latest population study released last year by the forest service this research indicates that since monitoring began in 1985, spotted owl populations declined 55-77 percent in washington, 31-68 percent in oregon, and 32-55 percent in california. Climate, habitat quality, and fitness in northern spotted owl populations in northwestern california northern spotted owl, population rates of change, strix.
Population biology of the california spotted owl in the central sierra nevada a dissertation submitted to the faculty of the graduate school of the university of. We conducted a meta-analysis to provide a current assessment of the population characteristics of california spotted owls (strix occidentalis occidentalis) resident on four study areas in the sierra nevada and one study area in southern california our meta-analysis followed rigorous a priori. Our analysis also differed from earlier analyses of spotted owl populations (burnham et al 1994, 1996) in that we use the f-parameterization of pradel's (1996) temporal symmetry model to estimate the annual rate of population change (λ), and examine trends in the components of population change, including survival and recruitment rates our.
Monitoring northern spotted owls on federal lands in marin county, california we recommend continued annual monitoring of the spotted owl population, and. Ornithological monographs no 54 population dynamics of the california spotted owl (strix occidentalis occidentalis): a meta-analysis alan i3. Biology of the california spotted owl since caspo including new methods of data analysis to provide scientifically defensible results (gutiérrez 2004, 2008) in.
Regional-scale predictive models of the distribution of the california spotted owl: an exploratory analysis carlos carroll klamath center for conservation research. The california spotted owl (strix occidentalis occidentalis) is the only spotted owl subspecies not listed as threatened or endangered under the united states endangered species act despite petitions to list it as threatened. Sessions, and numerous lengthy discussions on habitat selection, experimental design, and statistical analysis as project supervisor of the eldorado spotted owl demography study, mark, has been a tremendous source of information, guidance, and support throughout my 6 years working for the project. Research involved analysis of the spotted owl population throughout california and the pacific northwest performed basic statistical analysis and gis mapping on several projects.