BloisDomonBouchard2001

Référence

de Blois, S., Domon, G., Bouchard, A. (2001) Environmental, historical, and contextual determinants of vegetation cover: A landscape perspective. Landscape Ecology, 16(5):421-436.

Résumé

We formulated and tested models of relationships among determinants of vegetation cover in two agroforested landscapes of eastern North America (Haut Saint-Laurent, Quebec, Canada) that differed by the spatial arrangement of their geomorphic features and intensity of agricultural activities. Our landscape model compared the woody plots of each landscape in terms of the relative influence of environmental attributes, land use history (1958-1997), and spatial context (i.e., proximity of similar or contrasting land cover). Our vegetation model evaluated the relative contribution of the same sets of variables to the distributions of herbs, trees, and shrubs. Relationships were assessed using partial Mantel tests and path analyses. Significant environmental and contextual differences were found between the vegetation plots of the two landscapes, but disturbance history was similar. Our vegetation model confirms the dominant effect of historical factors on vegetation patterns. Whereas land-use history overrides environmental and contextual control for trees, herbaceous and shrub species are more sensitive to environmental conditions. Context is determinant only for understory species in older, less-disturbed plots. Results are discussed in relevance to vegetation dynamics in a landscape perspective that integrates interactions between environmental and human influences.

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@ARTICLE { BloisDomonBouchard2001,
    AUTHOR = { de Blois, S. and Domon, G. and Bouchard, A. },
    TITLE = { Environmental, historical, and contextual determinants of vegetation cover: A landscape perspective },
    JOURNAL = { Landscape Ecology },
    YEAR = { 2001 },
    VOLUME = { 16 },
    PAGES = { 421-436 },
    NUMBER = { 5 },
    NOTE = { 09212973 (ISSN) Cited By (since 1996): 17 Export Date: 26 April 2007 Source: Scopus CODEN: LAECE doi: 10.1023/A:1017548003345 Language of Original Document: English Correspondence Address: De Blois, S.; Plant Science Department; McGill University; Macdonald Campus 21; III Lakeshore Road Ste. Anne de Bellevue, Que. H9X 3V9, Canada; email: debloiss@magellan.umontreal.ca References: Abrams, M.D., Ruffner, C.M., Physiographic analysis of witness-tree distribution (1765-1798) and present forest cover through north central Pennsylvania (1995) Can. J. For. Res., 25, pp. 659-668; Austin, M.P., Nicholls, A.O., Species association within herbaceous vegetation in an Australian Eucalypt forest (1988) Diversity and Patterns in Plant Communities, pp. 95-114. , (eds.) Edited by H. J. During, M. J. A. Werger and J. H. Willems. SPB Academic Publishing. 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    ABSTRACT = { We formulated and tested models of relationships among determinants of vegetation cover in two agroforested landscapes of eastern North America (Haut Saint-Laurent, Quebec, Canada) that differed by the spatial arrangement of their geomorphic features and intensity of agricultural activities. Our landscape model compared the woody plots of each landscape in terms of the relative influence of environmental attributes, land use history (1958-1997), and spatial context (i.e., proximity of similar or contrasting land cover). Our vegetation model evaluated the relative contribution of the same sets of variables to the distributions of herbs, trees, and shrubs. Relationships were assessed using partial Mantel tests and path analyses. Significant environmental and contextual differences were found between the vegetation plots of the two landscapes, but disturbance history was similar. Our vegetation model confirms the dominant effect of historical factors on vegetation patterns. Whereas land-use history overrides environmental and contextual control for trees, herbaceous and shrub species are more sensitive to environmental conditions. Context is determinant only for understory species in older, less-disturbed plots. Results are discussed in relevance to vegetation dynamics in a landscape perspective that integrates interactions between environmental and human influences. },
    KEYWORDS = { Agricultural landscape Agroforested landscape Human disturbance Land use history Landscape model Mantel test Path analysis Quebec Spatial context Vegetation model environmental factor land use landscape ecology spatial analysis vegetation cover Canada },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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