JeanBouchard1993

Référence

Jean, M., Bouchard, A. (1993) Riverine wetland vegetation: importance of small-scale and large- scale environmental variation. Journal of Vegetation Science, 4(5):609-620.

Résumé

Evaluated the relative importance of small-scale variation in abiotic factors and large-scale spatio-temporal variation on the distribution of wetland vegetation of a section of the Upper St. Lawrence River in Quebec. Vegetation data were classified with agglomerative clustering into 11 community types, from Acer rubrum, Acer saccharinum and Fraxinus swamps, to scrubs dominated by Salix petiolaris, Alnus rugosa var. americana or Myrica gale, to Typha, Typha/Lythrum, Carex lacustris and Calamagrostis canadensis marshes. Peat thickness and water level are the most important abiotic variables correlated with plant community composition. As a whole, small-scale variation accounts for 25.6% of the species variation. Another 21.6% is explained by large-scale spatial distribution, and historical landscape dynamics. Interaction between small-scale and large-scale variations explains another 1.7%. In total, 48.9% of the species variation is explained by the two data sets. Time lag between a relative stabilization of species distribution and the reduction of natural disturbances (water level fluctuations and fires) could be a possible cause of the importance of spatio-temporal variables and the undetermined portion of species variation. -from Authors

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@ARTICLE { JeanBouchard1993,
    AUTHOR = { Jean, M. and Bouchard, A. },
    TITLE = { Riverine wetland vegetation: importance of small-scale and large- scale environmental variation },
    JOURNAL = { Journal of Vegetation Science },
    YEAR = { 1993 },
    VOLUME = { 4 },
    PAGES = { 609-620 },
    NUMBER = { 5 },
    NOTE = { 11009233 (ISSN) Cited By (since 1996): 30 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English },
    ABSTRACT = { Evaluated the relative importance of small-scale variation in abiotic factors and large-scale spatio-temporal variation on the distribution of wetland vegetation of a section of the Upper St. Lawrence River in Quebec. Vegetation data were classified with agglomerative clustering into 11 community types, from Acer rubrum, Acer saccharinum and Fraxinus swamps, to scrubs dominated by Salix petiolaris, Alnus rugosa var. americana or Myrica gale, to Typha, Typha/Lythrum, Carex lacustris and Calamagrostis canadensis marshes. Peat thickness and water level are the most important abiotic variables correlated with plant community composition. As a whole, small-scale variation accounts for 25.6% of the species variation. Another 21.6% is explained by large-scale spatial distribution, and historical landscape dynamics. Interaction between small-scale and large-scale variations explains another 1.7%. In total, 48.9% of the species variation is explained by the two data sets. Time lag between a relative stabilization of species distribution and the reduction of natural disturbances (water level fluctuations and fires) could be a possible cause of the importance of spatio-temporal variables and the undetermined portion of species variation. -from Authors },
    KEYWORDS = { plant community scale wetland vegetation Canada, Quebec, St Lawrence River Acer rubrum Acer saccharinum Alnus rugosa americana Calamagrostis canadensis Carex lacustris Fraxinus Lythrum Myrica gale Salix petiolaris Typha },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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