Download or read book The Effects of Clearcutting on Bird Species Species Diversity and Foliage Height Diversity in Northeastern Minnesota written by Meghan Felton and published by . This book was released on 2009 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the workshop written by North Central Forest Experiment Station (Saint Paul, Minn.) and published by . This book was released on 1979 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bird Densities and Diversity in Clearcut and Mature Oak hickory Forest written by Frank Richard Thompson and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some harvest options and their consequences for the aspen birch and associated conifer forest types of the Lake States written by North Central Forest Experiment Station (Saint Paul, Minn.). and published by . This book was released on 1978 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book USDA Forest Service General Technical Report NC written by and published by . This book was released on 1979 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Forest Management Practices on Nongame Birds written by Marie Theresa Nietfeld and published by . This book was released on 1990 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This annotated bibliography contains over 700 references which deal with: (1) effects, direct and indirect, of forest management practices on nongame forest birds, covering such topics as logging, cut types, rotation periods, thinning, site preparation, plantations, pesticides, herbicides, burning and regeneration: (2) forest bird-habitat relationships in both natural and sites disturbed by forestry operations or other practices which would produce similar situations; (3) factors affecting species diversity and biogeography distributions; (4) the role of birds in the forest ecosystem; and (5) management and conservation considerations for nongame forest birds, and sorne related techniques. The emphasis was placed on migratory songbirds in the boreal forest area. However, since few studies have investigated the effects of forestry practices on this category of birds in the boreal region, information was included for a variety of habitat types from aIl over North America, and a few from other regions. It was hoped that the findings and management considerations in these papers would provide usefuI information, and that some of the trends observed could be applied to the boreal region"--Abstract, p. iii.
Download or read book Responses of Birds and Small Mammals to Clearcutting in a Subalpine Forest in Central Colorado written by Virgil E. Scott and published by . This book was released on 1982 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reserve Timber Management in Northern Minnesota Aspen Clearcuts written by Samuel Bushnell Merrill and published by . This book was released on 1992 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation of Avian Diversity in North America written by and published by . This book was released on 1990 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Responses of Wildlife to Clearcutting and Associated Treatments in the Eastern United States written by Richard F. Harlow and published by . This book was released on 1997 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Planning for the Birds written by Carol Willis Pearson and published by . This book was released on 1998 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Clearcutting a Subalpine Forest in Central Colorado on Wildlife Habitat written by Glenn LeRoy Crouch and published by . This book was released on 1985 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Invasion by Reed Canarygrass Phalaris Arundinacea on Avian Communities and Nesting Success in Minnesota Wetlands written by Emily J. Hutchins and published by . This book was released on 2011 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive plants are a primary contributor to loss of biodiversity worldwide. In southern Minnesota, many wetlands have been invaded by reed canarygrass (Phalaris arundinacea). The current perception among ecologists and resource managers is that these wetlands are of little value to wildlife, yet little is known about the effects on birds of the widespread conversion of diverse wetlands to apparent monocultures of P. arundinacea. The purpose of this study was to determine the effects of P. arundinacea-mediated changes in the wetland plant community on avian communities and nesting success. During 2006 and 2007, I studied four diverse sedge wetlands paired with four wetlands dominated by P. arundinacea in the farmland region of southern Minnesota. I measured vegetative structure and composition, surveyed birds year-round via the fixed-radius point count technique, and conducted nest searching and monitoring to assess nesting success of Red-winged Blackbirds (Agelaius phoeniceus). Vegetation in wetlands invaded by P. arundinacea was taller and had greater visual obstruction readings than vegetation in sedge wetlands, but sedge wetlands had greater plant species richness and number of woody stems/100 m2 that were two meters tall. Plant species diversity, litter depth, horizontal heterogeneity, and number of woody stems/100 m2 that were two meters were not different between habitat types. Bird species richness was greater in wetlands invaded by P. arundinacea during the breeding season but did not differ between habitat types during the non-breeding season. Bird species diversity was not different between habitat types during either season. The abundance of individual species, including rare and listed species, also was not different between habitat types for either season, with one exception. The Ring-necked Pheasant (Phasianus colchicus) was more abundant in wetlands dominated by P. arundinacea during the non-breeding season. Rare species collectively contributed similar percent composition to the bird communities of each habitat type. Furthermore, nesting success and density of nests/10 hectares of Red-winged Blackbirds was not different between habitat types. Results of this study did not indicate that invasion by P. arundinacea has a negative effect on bird communities or nesting success of Red-winged Blackbirds in wetlands of southern Minnesota. The invasion by P. arundinacea does not appear to have altered the structure of wetland vegetation in a way that negatively affects birds and may provide better avian habitat than is currently perceived. Although invasion by P. arundinacea had mixed effects on the plant community in this study, it has had marked negative effects on other native plant communities and is likely to be a continual problem in the restoration and management of wetlands in Minnesota.
Download or read book Causes and Consequences of Species Diversity in Forest Ecosystems written by Aaron M. Ellison and published by MDPI. This book was released on 2019-07-30 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue Causes and Consequences of Species Diversity in Forest Ecosystems that was published in Forests
Download or read book Factors Affecting Avian Diversity in a Northeastern Woodlot written by Thomas Steven Litwin and published by . This book was released on 1986 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impact of Agriculture and Urban Development on the Community Structure of Wetland Birds in East Central Minnesota written by Christa R. Von Behren and published by . This book was released on 2007 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetlands are one of the fastest disappearing habitats in America. Many wetlands are also being altered due to the effects of various types of land use. Because wetlands provide important habitat for many types of birds, these species can be affected by changes in wetlands due to land use. The impacts of several wetland features, including wetland size, proximity to other wetlands, and vegetation, on bird communities have been debated in the literature. While some studies have found landscape-level features, such as connectivity to other sites to be the most important factors for explaining bird diversity, others have found within-patch characteristics to be more important. It is also unclear how these variables affect rates of nest predation in wetlands. The purpose of this study was to analyze the effects of several wetland features on wetland bird assemblages and nest predation rates at several spatial scales. Bird surveys, vegetation surveys, and measurements of nest predation were conducted at the Cedar Creek Natural History Area in East Bethel, Minnesota. Landscape analyses were conducted at four different spatial scales. Results showed that wetlands are used extensively, not only by species that breed in wetlands, but by species that breed in other environments as well, particularly by woodland birds. Results also indicated that diversity in vegetation structure is associated with an increase in the number of species using wetlands. Low bird species richness in wetlands was associated with increased amounts of agriculture and urban development, which was due to the reduction in trees in agricultural and developed areas. Unlike studies of upland species, birds responded the same way to urban development as to agriculture in the landscape. Features at both the habitat level and at broader landscape scales were found to be significantly correlated with features of the bird communities, indicating the importance of implementing conservation plans at multiple spatial scales. Results suggest that for restoration and construction of wetlands, increasing the variation in both vertical and horizontal structure within the wetland and in the surrounding landscape will increase the bird diversity within the wetland. The results of this study suggest that further encroachment of development and agriculture on wetlands in East Central Minnesota will lead to a decline in wetland bird diversity, particularly with respect to woodland birds that use the wetlands for foraging purposes. The data suggest that woodland obligates will disappear first from the area, followed by sensitive wetland obligates.
Download or read book Impacts of Coal Surface Mining on 25 Migratory Bird Species of High Federal Interest written by Judith Scherpelz Armbruster and published by . This book was released on 1983 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
