WeselyFraverKeneficEtAl2018

Référence

Wesely, N., Fraver, S., Kenefic, L.S., Weiskittel, A.R., Ruel, J.-C., Thompson, M.E. and White, A.S. (2018) Structural attributes of old-growth and partially harvested northern white-cedar stands in northeastern North America. Forests, 9(7). (Scopus )

Résumé

Forestry practitioners often need to identify old-growth stands because of their high conservation value. To identify the structural and compositional characteristics potentially unique to old-growth northern white-cedar (Thuja occidentalis L.) stands, we compared 16 old-growth stands and 17 partially harvested stands in Maine, USA and New Brunswick, Canada. Potential old-growth predictors included common structural metrics such as basal area (BA), quadratic mean diameter (QMD), large tree (≥40 cm diameter at breast height) density, and volumes of coarse woody debris (CWD), along with six structural indices. Using generalized linear mixed-models, we identified two significant structural predictors that differentiate old-growth from partially harvested stands when used in combination: Volume of advanced-decay CWD and live tree QMD. None of the structural indices were useful in distinguishing between old-growth and partially harvested stands, nor did the two types differ with respect to tree species composition. Our results demonstrate that two metrics easily derived from standard inventory data-decayed CWD volume and QMD-effectively characterize the old-growth white-cedar stands sampled in this study. Taken together, these results can improve management decision making for white-cedar, particularly in the context of certification, while also shedding light on the effects of past partial harvesting on current forest structure. © 2018 by the authors.

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@ARTICLE { WeselyFraverKeneficEtAl2018,
    AUTHOR = { Wesely, N. and Fraver, S. and Kenefic, L.S. and Weiskittel, A.R. and Ruel, J.-C. and Thompson, M.E. and White, A.S. },
    TITLE = { Structural attributes of old-growth and partially harvested northern white-cedar stands in northeastern North America },
    JOURNAL = { Forests },
    YEAR = { 2018 },
    VOLUME = { 9 },
    NUMBER = { 7 },
    NOTE = { cited By 0 },
    ABSTRACT = { Forestry practitioners often need to identify old-growth stands because of their high conservation value. To identify the structural and compositional characteristics potentially unique to old-growth northern white-cedar (Thuja occidentalis L.) stands, we compared 16 old-growth stands and 17 partially harvested stands in Maine, USA and New Brunswick, Canada. Potential old-growth predictors included common structural metrics such as basal area (BA), quadratic mean diameter (QMD), large tree (≥40 cm diameter at breast height) density, and volumes of coarse woody debris (CWD), along with six structural indices. Using generalized linear mixed-models, we identified two significant structural predictors that differentiate old-growth from partially harvested stands when used in combination: Volume of advanced-decay CWD and live tree QMD. None of the structural indices were useful in distinguishing between old-growth and partially harvested stands, nor did the two types differ with respect to tree species composition. Our results demonstrate that two metrics easily derived from standard inventory data-decayed CWD volume and QMD-effectively characterize the old-growth white-cedar stands sampled in this study. Taken together, these results can improve management decision making for white-cedar, particularly in the context of certification, while also shedding light on the effects of past partial harvesting on current forest structure. © 2018 by the authors. },
    AFFILIATION = { School of Forest Resources, University of Maine, Orono, ME, United States; U.S. Forest Service, Northern Research Station, Bradley, ME, United States; Faculté de Foresterie de Géographie et de Géomatique, Université Laval, 2405 Rue de la Terrasse, Québec, QC, Canada },
    ART_NUMBER = { 376 },
    AUTHOR_KEYWORDS = { Coarse woody debris; Dead wood; Forest certification; Forest structure; Naturalness; Thuja occidentalis L },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.3390/f9070376 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048935177&doi=10.3390%2ff9070376&partnerID=40&md5=74b27b9f88eca8ede4d6170022957e51 },
}

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