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Book Optimal Sampling for Radiotelemetry Studies of Spotted Owl Habitat and Home Range Classic Reprint

Download or read book Optimal Sampling for Radiotelemetry Studies of Spotted Owl Habitat and Home Range Classic Reprint written by Andrew B. Carey and published by Forgotten Books. This book was released on 2018-01-12 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Optimal Sampling for Radiotelemetry Studies of Spotted Owl Habitat and Home Range In 1986, we began a study of the relation between the spotted owl and its primary prey, the northern flying squirrel (glaucomys sabrinas). As part of that study, we conducted a pilot study of the behavior of the spotted owl as it relates to sampling designs for radiotelemetry and the characteristics of owl ranges as they relate to studies of foraging site selection by the spotted owl. The objective of this paper is to report the results of the pilot study. Four areas spanning the range of environmental conditions in the southern Coast Range were chosen for study: (1) Cherry Creek Research Natural Area is on the wet, west slope of the Coast Range; (2) Peterson point-lookout Mountain, near the South Fork Smith River northwest of Drain, Oregon, is an area with a mixture of naturally regenerated mature and old-growth forests, as well as managed forest; (3) the Miner Creek area is representative of the east slope of the Coast Range and is generally composed of a mixture of old-growth and managed forest; (4) the Riverview area is at the juncture of the east slope of the Coast Range and the Interior Valley Margin Province - an area composed of old-growth, managed forest, a large riparian area, oak woodlands, and grasslands (including hayfields and pastures). About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Book Research Paper PNW

Download or read book Research Paper PNW written by and published by . This book was released on 1978 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Estimating the Occupancy of Spotted Owl Habitat Areas by Sampling and Adjusting for Bias

Download or read book Estimating the Occupancy of Spotted Owl Habitat Areas by Sampling and Adjusting for Bias written by David L. Azuma and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A basic sampling scheme is proposed to estimate the proportion of sampled units (Spotted Owl Habitat Areas (SOHAs) or randomly sampled 1000-acre polygon areas (RSAs)) occupied by spotted owl pairs. A bias adjustment for the possibility of missing a pair given its presence on a SOHA or RSA is suggested. The sampling scheme is based on a fixed number of visits to a sample unit (a SOHA or RSA) in which the occupancy is to be determined. Once occupancy is determined, or the maximum number of visits is reached, the sampling is completed for that unit. The resulting data are summarized as a set of independent Bernoulli trials; a zero (no occupancy) or one (occupancy) is recorded for each unit. The occupancy proportion is the sum of these Bernoulli trials divided by the sample size. The bias adjustment estimates this occupancy proportion for the estimated number of units on which a pair of owls was present but not detected. The bias adjustment requires the recording of the number of the visit during which occupancy was first detected. The distributional assumptions are checked with five different sets of data.

Book General Technical Report PNW GTR

Download or read book General Technical Report PNW GTR written by and published by . This book was released on 1999 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Sport Fishing

Download or read book Sport Fishing written by and published by . This book was released on 1988 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Recovery Plan for the Northern Spotted Owl Draft

Download or read book Recovery Plan for the Northern Spotted Owl Draft written by and published by . This book was released on 1991 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Journal of Raptor Research

Download or read book The Journal of Raptor Research written by and published by . This book was released on 1999 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Bibliographies and Literature of Agriculture

Download or read book Bibliographies and Literature of Agriculture written by and published by . This book was released on 1990 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Wildlife Review

Download or read book Wildlife Review written by and published by . This book was released on 1990 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Demography Home Range and Habitat Selection of Northern Spotted Owls in the Ashland Watershed

Download or read book Demography Home Range and Habitat Selection of Northern Spotted Owls in the Ashland Watershed written by Jason W. Schilling and published by . This book was released on 2010 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northern Spotted Owls (Strix occidentalis caurina) inhabit productive forests that historically supported frequent, large, variable-severity fires in the Klamath province of southwestern Oregon occur in complex. The potential for high-severity wildfire remains high throughout this region, so remaining spotted owl habitat is at risk. An adaptive management approach to fire management and owl recovery in these forests is being advocated under the Final Recovery Plan for the Northern Spotted Owl. However, it is currently unclear what short- or long-term effects these fuels reduction treatments will have on spotted owl populations. Proposed forest thinning treatments planned for the Ashland Watershed in southwestern Oregon provide an unprecedented opportunity to study the effects of thinning on spotted owl ecology. My objectives were to determine 1) monthly survival rates and 2) home range size of spotted owls in relation to habitat characteristics, and 3) owl habitat selection. Data were collected prior to forest manipulations and will serve as a baseline for comparison with post-thinning data. Survival, home range size and habitat selection for 15 Northern spotted owls were monitored using radio telemetry in the Ashland Watershed and surrounding area from September 2006 to October 2008. A remote-sensed vegetation map of the study area was used to characterize habitat classes and configuration. Estimates of monthly survival were generated in relation to habitat characteristics using program MARK. Monthly survival was positively correlated with the number of late forest patches within the individual home range and negatively correlated with the mean nearest neighbor of late forest patches. Annual home range size varied from 189 to 894 ha. Annual home range size increased with increased amounts of edge and decreased with increased amounts of intermediate aged-forest. The mean breeding season home range size was 491 ha and was larger than mean non-breeding season home ranges. Home range size increased with the addition of hard edge, and amount of old and mature forest combined. The mean size for annual core areas was 77 ha. The best predictor of both non-breeding home range size and core area size was hard edge. While home range size was positively related to the amount of hard edge within non-breeding home range in a linear fashion, core area size increased with increasing amounts of hard edge, but only up to a threshold point, where further increases in edge did not increase core area size. Logistic regression was used to model habitat selection of owls in relation to forest characteristics. Individual owls exhibited different preferences in selecting habitat for foraging and roosting. Overall, owls selected for habitat that was closer to streams and further away from edge. Old forest did not significantly influence selection, but mature forest was positively associated with annual and winter habitat selection for several individual owls. Intermediate forests and non-habitat were only weakly associated with spotted owl habitat selection.

Book Proceedings of the International Union of Game Biologists XXI Congress

Download or read book Proceedings of the International Union of Game Biologists XXI Congress written by International Union of Game Biologists. Congress and published by Chalk River, Ont. : Canadian Forest Service. This book was released on 1994 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of the congress whose proceedings are included in this document was on wildlife biology and management in forested environments. Papers presented are arranged under the following broad topics: wildlife and forest management; biodiversity; wildlife genetics; socio-economic considerations in forestry and wildlife management; carnivores; bears; geographical information systems; toxicology; parasites; birds; remote sensing; game ranching; and ungulates.