Download or read book Population Ecology of the Northern Spotted Owl Strix Occidentalis Caurina in Northwestern California written by Alan B. Franklin and published by . This book was released on 2002 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Ecology of the Northern Spotted Owl Strix Occidentalis Caurina in Northern California written by Alan B. Franklin and published by . This book was released on 1990 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Ecology of the Northern Spotted Owl Strix Occidentalis Caurina in Northwest California written by Alan B. Franklin and published by . This book was released on 1988 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Demography of Northern Spotted Owls written by Eric D. Forsman and published by Univ of California Press. This book was released on 2011-07-21 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conclusions, and Recommendations P.75

Download or read book Northern Spotted Owl Strix Occidentalis Caurina written by and published by . This book was released on 1990 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Population Demography of Northern Spotted Owls written by Eric Forsman and published by Univ of California Press. This book was released on 2011-07-21 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. 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. White

Download or read book Population Ecology of the California Spotted Owl in the Central Sierra Nevada written by Christine A Moen and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Configuration Around Spotted Owl Nest and Roost Sites in Northwestern California written by John E. Hunter and published by . This book was released on 1994 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The California Spotted Owl written by Jared Verner and published by DIANE Publishing. This book was released on 1994 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers: an assessment of the current status of the California spotted owl, its biology and habitat use, and forests where the subspecies occurs in the Sierra Nevada and southern California. Suggests the direction of future inventories and research, identifies projected trends in habitat, and offers guidelines and recommendations for management of the California spotted owl. Charts, tables, graphs and color photos.

Download or read book Final Environmental Impact Statement on Management for the Northern Spotted Owl in the National Forests written by United States. Forest Service and published by . This book was released on 1992 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nest Site Selection and Nesting Habitat of the Northern Spotted Owl Strix Occidentalis Caurina in Northwestern California written by William S. LaHaye and published by . This book was released on 1988 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Northwest Forest Plan the First 10 Years 1994 2003 written by Joseph Lint and published by . This book was released on 2005 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The California Spotted Owl written by and published by . This book was released on 1992 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Northern Spotted Owl Effectiveness Monitoring Plan for the Northwest Forest Plan written by Joseph Lint and published by . This book was released on 1999 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology of the Spotted Owl in the Central Sierra Nevada California written by Stephen A. Laymon and published by . This book was released on 1988 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the ecology of the spotted owl (Strix occidentalis) was conducted on the west slope of the Sierra Nevada, California from June 1982 to January 1985. Nine juvenile and 12 adult spotted owls were captured and fitted with radio transmitters. Tests of survey techniques showed an average response rate of 25% to nocturnal call surveys. Males responded more frequently than females and non-breeding owls responded more frequently than breeding owls. Reproductive success was low, with only 5 of 50 pairings producing young. Juvenile survival prior to dispersal (n = 12), was also low (33%). These results predict a rapidly declining population if not supplemented by immigration. Home ranges were determined by the minimum convex polygon method. The median summer-fall home range size for an individual spotted owl was 1210 ha (2988 acres); the median summer-fall home range size for a pair was 1660 ha (4100 acres). In November, the owls migrated downslope from mixed conifer forest above 1300 m (4265 feet) to oak-pine woodlands below 1300 m. Despite occupancy of the study area by spotted owls the site is believed to be marginal habitat based on the poor reproductive success and high mortality rates observed during the study. -- Adapted from abstract.

Download or read book Of Spotted Owls Old Growth and New Policies written by Bruce G. Marcot and published by . This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characteristics of Fragmented Habitats Used by the Northern Spotted Owl Strix Occidentalis Caurina in Northwestern California written by Gilberto Chávez León and published by . This book was released on 1989 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: