Ruppert2016914

Référence

Ruppert, J.L.W., Fortin, M.-J., Gunn, E.A., Martell, D.L. (2016) Conserving woodland caribou habitat while maintaining timber yield: A graph theory approach. Canadian Journal of Forest Research, 46(7):914-923. (Scopus )

Résumé

The fragmentation and loss of old-growth forest has led to the decline of many forest-dwelling species that depend on old-growth forest as habitat. Emblematic of this issue in many areas of the managed boreal forest in Canada is the threatened woodland caribou (Rangifer tarandus caribou (Gmelsin, 1788)). We develop a methodology to help determine when and how timber can be harvested to best satisfy both industrial timber supply and woodland caribou habitat requirements. To start, we use least-cost paths based on graph theory to determine the configuration of woodland caribou preferred habitat patches. We then developed a heuristic procedure to schedule timber harvesting based on a trade-off between merchantable wood volume and the remaining amount of habitat and its connectivity during a planning cycle. Our heuristic can attain 84% of the potential woodland caribou habitat that would be available in the absence of harvesting at the end of a 100 year planning horizon. Interestingly, this is more than that which is attained by the current plan (50%) and a harvesting plan that targets high volume stands (32%). Our results indicate that our heuristic procedure (i.e., an ecologically tuned optimization approach) may better direct industrial activities to improve old-growth habitat while maintaining specified timber production levels. © 2016 NRC Research Press.

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@ARTICLE { Ruppert2016914,
    AUTHOR = { Ruppert, J.L.W. and Fortin, M.-J. and Gunn, E.A. and Martell, D.L. },
    TITLE = { Conserving woodland caribou habitat while maintaining timber yield: A graph theory approach },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2016 },
    VOLUME = { 46 },
    NUMBER = { 7 },
    PAGES = { 914-923 },
    NOTE = { cited By 1 },
    ABSTRACT = { The fragmentation and loss of old-growth forest has led to the decline of many forest-dwelling species that depend on old-growth forest as habitat. Emblematic of this issue in many areas of the managed boreal forest in Canada is the threatened woodland caribou (Rangifer tarandus caribou (Gmelsin, 1788)). We develop a methodology to help determine when and how timber can be harvested to best satisfy both industrial timber supply and woodland caribou habitat requirements. To start, we use least-cost paths based on graph theory to determine the configuration of woodland caribou preferred habitat patches. We then developed a heuristic procedure to schedule timber harvesting based on a trade-off between merchantable wood volume and the remaining amount of habitat and its connectivity during a planning cycle. Our heuristic can attain 84% of the potential woodland caribou habitat that would be available in the absence of harvesting at the end of a 100 year planning horizon. Interestingly, this is more than that which is attained by the current plan (50%) and a harvesting plan that targets high volume stands (32%). Our results indicate that our heuristic procedure (i.e., an ecologically tuned optimization approach) may better direct industrial activities to improve old-growth habitat while maintaining specified timber production levels. © 2016 NRC Research Press. },
    AFFILIATION = { Faculty of Forestry, University of Toronto, 33 Willcocks Street, Toronto, ON, Canada; Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada; Department of Renewable Resources, University of Alberta, 751 General Services Building, Edmonton, AB, Canada },
    AUTHOR_KEYWORDS = { Ecological values; Economic values; Graph theory; Habitat configuration; Least-cost paths },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1139/cjfr-2015-0431 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977090496&doi=10.1139%2fcjfr-2015-0431&partnerID=40&md5=8dce1fea57626e1b28747e74d1629b0e },
}

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