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Modeling the cumulative effects of a...

Michigan State University.

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Modeling the cumulative effects of aspen management practices on timber and wildlife at multiple spatial and temporal scales.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Modeling the cumulative effects of aspen management practices on timber and wildlife at multiple spatial and temporal scales./
作者:	Felix, Alexandra B.
面頁冊數:	340 p.
附註:	Adviser: Henry Campa, III.
Contained By:	Dissertation Abstracts International69-04B.
標題:	Agriculture, Forestry and Wildlife. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3312683
ISBN:	9780549618737

Modeling the cumulative effects of aspen management practices on timber and wildlife at multiple spatial and temporal scales.
Felix, Alexandra B.

Modeling the cumulative effects of aspen management practices on timber and wildlife at multiple spatial and temporal scales. - 340 p.

Adviser: Henry Campa, III.

Thesis (Ph.D.)--Michigan State University, 2008.

To effectively manage wildlife and timber resources, managers and planners need to understand how different ecological conditions and management practices affect forest characteristics and subsequently how wildlife respond. To address this need, I refined an ecological classification system used to define habitat types, and investigated the potential spatial distribution of aspen, ecological differences associated with aspen in 3 age classes (20--29, 50--59, > 70) and 6 habitat types, avian community associations, ruffed grouse selection of aspen for drumming habitat, and the cumulative effects of aspen management practices on wildlife and timber in a 12,300 km2 area in Michigan's Upper Peninsula from 2004--2006. The goals of the project were to understand how forest management may affect the structure of vegetation within ecosystems, the distribution of resources within the landscape, and wildlife response to those changes; and to investigate the feasibility of different aspen management scenarios on timber sustainability and maintenance of wildlife habitat.

ISBN: 9780549618737Subjects--Topical Terms:

783690
Agriculture, Forestry and Wildlife.

Modeling the cumulative effects of aspen management practices on timber and wildlife at multiple spatial and temporal scales.
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500 $a Source: Dissertation Abstracts International, Volume: 69-04, Section: B, page: 2020.
502 $a Thesis (Ph.D.)--Michigan State University, 2008.
520 $a To effectively manage wildlife and timber resources, managers and planners need to understand how different ecological conditions and management practices affect forest characteristics and subsequently how wildlife respond. To address this need, I refined an ecological classification system used to define habitat types, and investigated the potential spatial distribution of aspen, ecological differences associated with aspen in 3 age classes (20--29, 50--59, > 70) and 6 habitat types, avian community associations, ruffed grouse selection of aspen for drumming habitat, and the cumulative effects of aspen management practices on wildlife and timber in a 12,300 km2 area in Michigan's Upper Peninsula from 2004--2006. The goals of the project were to understand how forest management may affect the structure of vegetation within ecosystems, the distribution of resources within the landscape, and wildlife response to those changes; and to investigate the feasibility of different aspen management scenarios on timber sustainability and maintenance of wildlife habitat.
520 $a Differences in vegetation structure and composition were observed among age classes and habitat types (p < 0.10); most notable were stem and shrub density, herbaceous cover, and conifer cover. These differences contributed to identification of 7 avian community associations and differences in grouse drumming habitat selection. Grouse selection was higher (p < 0.05) for young (0--29-year-old) and old (> 50 years) aspen and aspen on habitat types supported by mesic loamy soils. Grouse did not select drumming areas in non-aspen vegetation types and in aspen growing on xeric sandy soils.
520 $a I used goal programming to develop a timber harvest schedule for 10 decades that minimized the deviation (in terms of area) from meeting the Michigan Department of Natural Resources' goal of establishing and maintaining an even-age class distribution of aspen in 8 age classes in 9 habitat types under 3 management scenarios (i.e., harvest all aspen by 80 years, harvest all aspen > 60 years, and intensively harvest aspen by requiring ≥ 60% to be harvested from the 40-year age class). The spatial feasibility and spatial and temporal consequences of the harvest schedule was evaluated through simulations using the program HARVEST. The goal was feasible by decade 8 under scenario 1 (i.e., harvest by 80 years), it was attainable in 6 habitat types by decade 8 under scenario 2 (i.e., harvest aspen > 60), and it was not attainable under intensive management. Meeting the goal increased habitat availability for most avian communities, but decreased the amount of highly selected grouse drumming habitat. Aspen volume harvested was sustainable at168,000 cords/decade once the goal was met.
520 $a Within many state and federal agencies, forest management goals include sustainable management to meet a variety of objectives. The cumulative effects of management decisions are what determine how well long-term forest management goals are being met. The results of this project provide quantitative answers to questions such as how much aspen to cut, where can it be cut, and what are the effects on timber production and wildlife at multiple levels of biological organization. With increasing demands on natural resources, answers to such questions are essential for agencies and other landowners to sustain timber and wildlife resources.
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