Download or read book Breeding Bird Communities in Aspen Forests of the Sub boreal Spruce dk Subzone in the Prince Rupert Forest Region written by Rosamund A. Pojar and published by Research Branch, Ministry of Forests. This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports a two-year study initiated to examine the diversity of bird communities in different seral stages of the aspen ecosystem at the western end of the dry cool subzone of the sub-boreal spruce zone of the Prince Rupert Forest Region, British Columbia. Breeding birds were chosen for the study since they tend to stay within a relatively confined area once in their territories and are hence easier to count. The study also had the objective of identifying management indicator species that could represent the diversity of most birds likely to be affected by aspen management. Birds were counted by a modified point count method for clearcuts, sapling aspen stands, mature aspen stands, old aspen stands with century-old trees, and mixed aspen-conifer stands. Data were analyzed using a detrended correspondence analysis ordination procedure, and habitat relationships of the 16 most abundant species were analyzed by multiple regression.
Download or read book Birds of British Columbia Volume 4 written by Wayne Campbell and published by UBC Press. This book was released on 2007-11-01 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: This much-awaited final volume of The Birds of British Columbia completes what some have called one of the most important regional ornithological works in North America. It is the culmination of more than 25 years of effort by the authors who, with the assistance of thousands of dedicated volunteers throughout the province, have created the basic reference work on the avifauna of British Columbia.
Download or read book Birds of British Columbia Volume 3 written by Wayne Campbell and published by UBC Press. This book was released on 2007-10-01 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: British Columbia has one of the richest assemblages of bird species in the world. The four volumes of The Birds of British Columbia provide unprecedented coverage of this region's birds, presenting a wealth of information on the ornithological history, habitat, breeding habits, migratory movements, seasonality, and distribution patterns of each of the 472 species of birds. This third volume, covering the first half of the passerines, builds on the authoritative format of the previous bestselling volumes. It contains 89 species, including common ones such as swallows, jays, crows, wrens, thrushes, and starlings. The text is supported by hundreds of full-colour pictures, including unique habitat photographs, detailed distribution maps, and beautiful illustrations of the birds, their nests, eggs, and young. The Birds of British Columbia is a complete reference work for bird-watchers, ornithologists, and naturalists who want in-depth information on the province's regularly occurring and rare birds.
Download or read book Ecological Dynamics on Yellowstone s Northern Range written by National Research Council and published by National Academies Press. This book was released on 2002-02-01 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecological Dynamics on Yellowstone's Northern Range discusses the complex management challenges in Yellowstone National Park. Controversy over the National Park Service's approach of "natural regulation" has heightened in recent years because of changes in vegetation and other ecosystem components in Yellowstone's northern range. Natural regulation minimizes human impacts, including management intervention by the National Park Service, on the park ecosystem. Many have attributed these changes to increased size of elk and other ungulate herds. This report examines the evidence that increased ungulate populations are responsible for the changes in vegetation and that the changes represent a major and serious change in the Yellowstone ecosystem. According to the authors, any human intervention to protect species such as the aspen and those that depend on them should be prudently localized rather than ecosystem-wide. An ecosystem-wide approach, such as reducing ungulate populations, could be more disruptive. The report concludes that although dramatic ecological change does not appear to be imminent, approaches to dealing with potential human-caused changes in the ecosystem, including those related to climate change, should be considered now. The need for research and public education is also compelling.
Download or read book Disturbance Ecology and Biological Diversity written by Erik A. Beever and published by CRC Press. This book was released on 2019-10-30 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents cascading effects of ecological disturbances on a multitude of ecosystem components. It includes agricultural development, large infrequent disturbances, forest harvesting, non-native grazing in deserts, ground transportation, powerline corridors, fires, urban ecology, disturbance in aquatic ecosystems, land-use dynamics on diversity, habitat fragmentation, sedimentation of wetlands, and contemporary climate change. The book facilitates users in understanding why disturbances are occurring while recommending mitigation and remediation strategies.
Download or read book Modeling the Cumulative Effects of Aspen Management Practices on Timber and Wildlife at Multiple Spatial and Temporal Scales written by Alexandra B. Felix and published by . This book was released on 2008 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2006 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Biodiversity Publications written by Graham Shuley and published by British Columbia, Ministry of Forests Research Program. This book was released on 1998 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FRDA Report written by and published by . This book was released on 1996 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Management of B C Hardwoods written by Canada-British Columbia Partnership Agreement on Forest Resource Development: FRDA II. and published by Canadian Forest Service. This book was released on 1996 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive but non-technical overview of the ecology and management, for both timber production and environmental values, of hardwoods in British Columbia.
Download or read book Bird Populations of Aspen Forests in Western North America written by J. A. Douglas Flack and published by American Ornithologists Union. This book was released on 1976 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bird Diversity and Abundance Following Aspen Clear Cutting in the Boreal White and Black Spruce Biogeoclimatic Zone written by Industrial Forestry Service and published by . This book was released on 1996 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relations of Structure in Aspen Forests to Bird Populations written by Douglas Flack and published by . This book was released on 1967 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nesting Bird Community Response to Natural Habitat Variation in Aspen Forests of the Central Rocky Mountains written by Heather M Struempf and published by . This book was released on 2000 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Classification cologique biophysique Du Territoire Au Canada written by Canada Committee on Ecological (Biophysical) Land Classification and published by Ministère des approvisionnements et services. This book was released on 1976 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses methodology and status of biophysical land classification in Canada.
Download or read book Creating a Forestry for the 21st Century written by Kathryn A. Kohm and published by Island Press. This book was released on 1997 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, a sea change has occurred in the field of forestry. A vastly increased understanding of how ecological systems function has transformed the science from one focused on simplifying systems, producing wood, and managing at the stand-level to one concerned with understanding and managing complexity, providing a wide range of ecological goods and services, and managing across broad landscapes.Creating a Forestry for the 21st Century is an authoritative and multidisciplinary examination of the current state of forestry and its relation to the emergent field of ecosystem management. Drawing upon the expertise of top professionals in the field, it provides an up-to-date synthesis of principles of ecosystem management and their implications for forest policy. Leading scientists, including Malcolm Hunter, Jr., Bruce G. Marcot, James K. Agee, Thomas R. Crow, Robert J. Naiman, John C. Gordon, R.W. Behan, Steven L. Yaffee, and many others examine topics that are central to the future of forestry: new understandings of ecological processes and principles, from stand structure and function to disturbance processes and the movement of organisms across landscapes challenges to long-held assumptions: the rationale for clearcutting, the wisdom of short rotations, the exclusion of fire traditional tools in light of expanded goals for forest landscapes managing at larger spatial scales, including practical information and ideas for managing large landscapes over long time periods the economic, organizational, and political issues that are critical to implementing successful ecosystem management and developing institutions to transform knowledge into action Featuring a 16-page center section with color photographs that illustrate some of the best on-the-ground examples of ecosystem management from around the world, Creating a Forestry for the 21st Century is the definitive text on managing ecosystems. It provides a compelling case for thinking creatively beyond the bounds of traditional forest resource management, and will be essential reading for students; scientists working in state, federal, and private research institutions; public and private forest managers; staff members of environmental/conservation organizations; and policymakers.
