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Author : Carly Jane Walker
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (625 download)
Download or read book Influences of Landscape Structure on Snowshoe Hare Populations in Fragmented Forests written by Carly Jane Walker and published by . This book was released on 2005 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Otto Jensen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (124 download)
Download or read book Snowshoe Hare Population Ecology in Lynx-occupied Areas of Washington written by Paul Otto Jensen and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Boreal forest ecosystems are being disrupted by climate change, resulting in alterations to species distribution and abundance. Snowshoe hares (Lepus americanus) are a keystone boreal forest herbivore that has begun to experience range contraction in the continental United States. Despite their importance, we have limited spatio-temporal knowledge of their densities along the southern edge of their range where boreal habitat is fragmented and climatic conditions are marginal. To address this limitation, we explored the accuracy of three non-invasive techniques for estimating hare density including two indices (pellet density and camera trap detection rate) and a camera-trap-based model for direct density estimation (Random Encounter Model - REM) at 13, 10.25 ha sites in northcentral Washington. We compared these values to spatially explicit capture-recapture (SECR) density estimates from live-capture efforts at the same 13 sites. SECR ranged from 0.16-1.58 hares/ha. Pellet densities had a strong linear association to SECR (R2 = 0.91) and camera trap detection rates had a strong exponential relationship with SECR (R2 = 0.81). REM densities using our camera-trap-derived animal speed (2.4 km/day) ranged from 0.16 to 1.10 hares/ha, though estimates were sensitive to animal speed. Average absolute difference between REM- and SECR-based density estimates were 0.19 hares/ha (range = 0.00-0.84, SE = 0.07), with REM-based estimates for 10 of 13 sites falling within SECR confidence intervals. Additionally, using pellet density data maintained by two external sources and remote sensed data derived to describe forest structure and topography, we developed a landscape-scale pellet density model, converted pellets to density, and related hare density to detection rates of a threatened species, Canada lynx (Lynx canadensis) that relies heavily on hare as prey. We found pellet density is best predicted by stand age, horizontal and vertical cover and lynx detection rates are significantly higher when hare density is > 0.5 hares/ha. As hare populations change along their southern range edge, non-invasive techniques will enable the collection of cost-effective large-scale data that can be used to inform management and conservation, and provide the means to better assess trophic relationships within forested communities.
Author : Nathan Daniel Berg
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (69 download)
Download or read book Snowshoe Hare and Frost Structure Relationships in Western Wyoming written by Nathan Daniel Berg and published by . This book was released on 2009 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Snowshoe hares (Lepus americanus) are a critically important prey species for Canada lynx (Lynx canadensis). Determination of snowshoe hare distribution and abundance is needed in western Wyoming for lynx conservation. We used linear regression to examine the correlations between snowshoe hare density, as determined by mark-recapture estimates, and fecal pellet plot counts on both uncleared and annually cleared plots on the Bridger-Teton National Forest, western Wyoming. We found significant correlations between hare density estimates and fecal pellet counts for both uncleared and annually cleared pellet counts; however the relationship was much stronger for annually cleared pellet counts. Adjusting the buffer size by omitting hard habitat edges (not used by hares) around the trapping grids improved correlations between hare density and fecal pellet counts further. We recommend pellet counts from annually cleared plots be used when precise estimates of snowshoe hare abundance are required. Though precision is sacrificed when using uncleared plots, they are useful as a coarse index of habitat use by hares. The derived regression equations should be used to identify foraging habitat for lynx in western Wyoming. In addition to snowshoe hares, in western Wyoming red squirrels (Tamiasciurus hudsonicus) and grouse (Bonasa umbellus and Dendragapus obscurus) are used by Canada lynx. Whether young forests or older multi-storied forests contain more snowshoe hares, red squirrels, and grouse in western Wyoming is currently unknown. We estimated snowshoe hare density, and indexed red squirrel and forest grouse abundance in 3 classes of 30-70-year-old lodgepole pine (Pinus contorta) and 4 classes of mature multi-storied forest with a spruce (Picea engelmannii)- fir (Abies lasiocarpa) component. We recorded landscape and forest structure characteristics to understand how these influence lynx prey abundance. Overall, snowshoe hares, red squirrels, and forest grouse were more abundant in multi-storied forests than young forests. Forest attributes that predicted prey abundance were often more prevalent in multi-storied forests. Results from this study suggest that multi-storied forests with a spruce-fir component were disproportionately important to snowshoe hares, red squirrels, and forest grouse in western Wyoming. Canada lynx conservation efforts should focus on maintaining, enhancing, and promoting multi-storied forests in this region.
Author : Ajith H. Perera
Publisher : UBC Press
ISBN 13 : 0774842369
Total Pages : 355 pages
Book Rating : 4.7/5 (748 download)
Download or read book Ecology of a Managed Terrestrial Landscape written by Ajith H. Perera and published by UBC Press. This book was released on 2011-11-01 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing popularity of the broad, landscape-scale approach to forest management represents a dramatic shift from the traditional, stand-based focus on timber production. Ecology of a Managed Terrestrial Landscape responds to the increasing need of forest policy developers, planners, and managers for an integrated, comprehensive perspective on ecological landscapes. The book examines the "big picture" of ecological patterns and processes through a case study of the vast managed forest region in Ontario. The contributors synthesize current landscape ecological knowledge of this area and look at gaps and future research directions from several points of view: spatial patterns, ecological functions and processes, natural disturbances, and ecological responses to disturbance. They also discuss the integration of landscape ecological knowledge into policies of forest management policies, particularly with respect to Ontario's legislative goals of forest sustainability. Ecology of a Managed Terrestrial Landscape is the first book to describe the landscape ecology of a continuously forested landscape in a comprehensive manner. It is written for instructors and students in forest management, wildlife ecology, and landscape ecology, and for forest managers, planners, and policy developers in North America.
Author : Sharon K. Collinge
Publisher : JHU Press
ISBN 13 : 0801895669
Total Pages : 358 pages
Book Rating : 4.8/5 (18 download)
Download or read book Ecology of Fragmented Landscapes written by Sharon K. Collinge and published by JHU Press. This book was released on 2009-06-01 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ask airline passengers what they see as they gaze out the window, and they will describe a fragmented landscape: a patchwork of desert, woodlands, farmlands, and developed neighborhoods. Once-contiguous forests are now subdivided; tallgrass prairies that extended for thousands of miles are now crisscrossed by highways and byways. Whether the result of naturally occurring environmental changes or the product of seemingly unchecked human development, fractured lands significantly impact the planet’s biological diversity. In Ecology of Fragmented Landscapes, Sharon K. Collinge defines fragmentation, explains its various causes, and suggests ways that we can put our lands back together. Researchers have been studying the ecological effects of dismantling nature for decades. In this book, Collinge evaluates this body of research, expertly synthesizing all that is known about the ecology of fragmented landscapes. Expanding on the traditional coverage of this topic, Collinge also discusses disease ecology, restoration, conservation, and planning. Not since Richard T. T. Forman's classic Land Mosaics has there been a more comprehensive examination of landscape fragmentation. Ecology of Fragmented Landscapes is critical reading for ecologists, conservation biologists, and students alike.
Author :
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (319 download)
Download or read book Effects of Agricultural Conservation Practices on Fish and Wildlife written by and published by . This book was released on 2008 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
Author : Malcolm L. Hunter
Publisher : Cambridge University Press
ISBN 13 : 9780521637688
Total Pages : 720 pages
Book Rating : 4.6/5 (376 download)
Download or read book Maintaining Biodiversity in Forest Ecosystems written by Malcolm L. Hunter and published by Cambridge University Press. This book was released on 1999-06-10 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the ways in which we can continue to benefit from forests, while conserving their biodiversity.
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Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (327 download)
Download or read book Special Reference Briefs written by and published by . This book was released on 1983 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kathleen A. Galvin
Publisher : Springer Science & Business Media
ISBN 13 : 1402049064
Total Pages : 422 pages
Book Rating : 4.4/5 (2 download)
Download or read book Fragmentation in Semi-Arid and Arid Landscapes written by Kathleen A. Galvin and published by Springer Science & Business Media. This book was released on 2007-10-12 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: With detailed data from nine sites around the world, the authors examine how the so-called ‘fragmentation’ of these fragile landscapes occurs and the consequences of this break-up for ecosystems and the people who depend on them. ‘Rangelands’ make up a quarter of the world’s landscape, and here, the case is developed that while fragmentation arises from different natural, social and economic conditions worldwide, it creates similar outcomes for human and natural systems.
Author : Robert Fletcher
Publisher : Springer
ISBN 13 : 3030019896
Total Pages : 523 pages
Book Rating : 4.0/5 (3 download)
Download or read book Spatial Ecology and Conservation Modeling written by Robert Fletcher and published by Springer. This book was released on 2019-02-15 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a foundation for modern applied ecology. Much of current ecology research and conservation addresses problems across landscapes and regions, focusing on spatial patterns and processes. This book is aimed at teaching fundamental concepts and focuses on learning-by-doing through the use of examples with the software R. It is intended to provide an entry-level, easily accessible foundation for students and practitioners interested in spatial ecology and conservation.
Author :
Publisher :
ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.3/5 (91 download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sharon K. Collinge
Publisher : JHU Press
ISBN 13 : 0801891388
Total Pages : 358 pages
Book Rating : 4.8/5 (18 download)
Download or read book Ecology of Fragmented Landscapes written by Sharon K. Collinge and published by JHU Press. This book was released on 2009-06 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ask airline passengers what they see as they gaze out the window, and they will describe a fragmented landscape: a patchwork of desert, woodlands, farmlands, and developed neighborhoods. Once-contiguous forests are now subdivided; tallgrass prairies that extended for thousands of miles are now crisscrossed by highways and byways. Whether the result of naturally occurring environmental changes or the product of seemingly unchecked human development, fractured lands significantly impact the planet’s biological diversity. In Ecology of Fragmented Landscapes, Sharon K. Collinge defines fragmentation, explains its various causes, and suggests ways that we can put our lands back together. Researchers have been studying the ecological effects of dismantling nature for decades. In this book, Collinge evaluates this body of research, expertly synthesizing all that is known about the ecology of fragmented landscapes. Expanding on the traditional coverage of this topic, Collinge also discusses disease ecology, restoration, conservation, and planning. Not since Richard T. T. Forman's classic Land Mosaics has there been a more comprehensive examination of landscape fragmentation. Ecology of Fragmented Landscapes is critical reading for ecologists, conservation biologists, and students alike.
Author :
Publisher :
ISBN 13 :
Total Pages : 720 pages
Book Rating : 4.3/5 (91 download)
Download or read book General Technical Report RM. written by and published by . This book was released on 1994 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gary W. Barrett
Publisher : Springer Science & Business Media
ISBN 13 : 0387216227
Total Pages : 355 pages
Book Rating : 4.3/5 (872 download)
Download or read book Landscape Ecology of Small Mammals written by Gary W. Barrett and published by Springer Science & Business Media. This book was released on 2013-03-19 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary of much of the experimental work on the spatial ecology of small mammals. This field has entered an exciting stage with such new techniques as GIS and systems modeling becoming available. Leading contributors describe and analyze the most well-known case studies and provide new insights into how landscape patterns and processes have had an impact on small mammals and how small mammals have, in turn, affected landscape structure and composition.
Author :
Publisher :
ISBN 13 :
Total Pages : 672 pages
Book Rating : 4.3/5 (243 download)
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2007 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.3/5 (555 download)
Download or read book Beaverhead National Forest (N.F.) Bender-Retie Timber Sale written by and published by . This book was released on 1991 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.3/5 (555 download)
Download or read book Oil Shale and Tar Sands Resource Management Plan Amendments to Address Land Use Allocations in Colorado, Utah, and Wyoming written by and published by . This book was released on 2008 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
