| Concentrating anthropogenic disturbance to balance ecological and economic values: applications to forest management. | |
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MedLine Citation:
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PMID: 22827134    Owner: NLM    Status: In-Process    |
Abstract/OtherAbstract:
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To maintain healthy ecosystems, natural-disturbance-based management aims to minimize differences between unmanaged and managed landscapes. Two related approaches may help accomplish this goal, either applied together or in isolation: (1) concentrating anthropogenic disturbance through zoning (with protected areas and intensive management); and (2) emulating natural disturbances. The purpose of this paper is to examine the effects of these two approaches, applied both in isolation and in combination, on the structure of the forest landscape. To do so, we use a spatially explicit landscape simulation model on a large fire-dominated landscape in eastern Canada. Specifically, we examine the effects of (1) increasing the maximum size of logged stands (cutblocks) to better emulate the full range of fire sizes in a fire-dominated landscape, (2) increasing protected areas, and (3) adding aggregated or dispersed intensive wood production areas to the landscape in addition to protected areas (triad management). We focus on maximizing the amount and minimizing the fragmentation of old-growth forest and on reducing road construction. Increasing maximum cutblock size and adding protected areas led to reduced road construction, while the latter also resulted in less fragmentation and more old growth. Although protected areas led to reduced harvest volume, the addition of an intensive production zone (triad management) counterbalanced this loss and resulted in more old growth than equivalent scenarios with protected areas but no intensive production zone. However, we found no differences between aggregated and dispersed intensive wood production. Our results imply that differences between unmanaged and managed landscapes can be reduced by concentrating logging efforts through a combination of protected areas and intensive wood production, and by creating some larger cutblocks. We conclude that the forest industry and regulators should therefore seek to increase protected areas through triad management and consider increasing maximum cutblock size. These results add to a growing body of literature indicating that intensive management on a small part of the landscape may be better than less intensive management spread out over a much larger part of the landscape, whether this is in the context of forestry, agriculture, or urban development. |
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Authors:
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Rebecca Tittler; Christian Messier; Andrew Fall |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't    |
Journal Detail:
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Title: Ecological applications : a publication of the Ecological Society of America    Volume: 22    ISSN: 1051-0761    ISO Abbreviation: Ecol Appl    Publication Date: 2012 Jun |
Date Detail:
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Created Date:Â 2012-07-25 Â Â Â Completed Date:Â - Â Â Â Revised Date:Â - Â Â Â |
Medline Journal Info:
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Nlm Unique ID: 9889808    Medline TA: Ecol Appl    Country: United States    |
Other Details:
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Languages: eng    Pagination: 1268-77    Citation Subset: IM    |
Affiliation:
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Centre d'etude de la forêt, Université du Québec a Montréal, C.P. 8888, Su. Centre-Ville, Montréal, Québec H3C 3P8, Canada. rtittler@gmail.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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