SchmuckiBloisBouchardEtAl2002

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Schmucki, R., de Blois, S., Bouchard, A., Domon, G. (2002) Spatial and temporal dynamics of hedgerows in three agricultural landscapes of Southern Quebec, Canada. Environmental Management, 30(5):651-664.

Résumé

Noncrop areas such as hedgerows in agricultural landscapes can perform several ecological and agronomic functions (e.g., habitat, movement corridors, wind-break, etc.), but their dynamics and drivers of changes are often poorly known. We conducted a study in three agricultural landscapes of southern Quebec, Canada, to assess and compare the spatial and temporal (1958-1997) dynamics of three hedgerow networks in relation to geomorphic conditions (marine, glacial, and mixed deposit) and land-use changes. Hedgerow networks were mapped and described in terms of their structure (density, degree of connectivity, and presence of trees or shrubs) and their relationship to other components of the landscape (connection to woodland). Relationships were assessed in time and space using nonparametric correlation, Mantel test, and principal components analysis (PCA). Results show significant differences between hedgerow structure for the three landscapes and distinct temporal and spatial dynamics that can be related to changes in management practices and agricultural policies. On marine deposits, increases in hedgerow density did not always correspond to an increase in their degree of connectivity, suggesting a possible reduction in network quality. On glacial deposits, hedgerow density declined following abandonment of agricultural land, but rather than disappearing, these linear structures were integrated into adjacent brush or forested areas. Our analysis reveals the complex spatial and temporal dynamics of the hedgerow networks and highlights the need to take into account spatial attributes such as connectivity and connection to woodland to evaluate more accurately overall network quality.

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@ARTICLE { SchmuckiBloisBouchardEtAl2002,
    AUTHOR = { Schmucki, R. and de Blois, S. and Bouchard, A. and Domon, G. },
    TITLE = { Spatial and temporal dynamics of hedgerows in three agricultural landscapes of Southern Quebec, Canada },
    JOURNAL = { Environmental Management },
    YEAR = { 2002 },
    VOLUME = { 30 },
    PAGES = { 651-664 },
    NUMBER = { 5 },
    NOTE = { 0364152X (ISSN) Cited By (since 1996): 5 Export Date: 26 April 2007 Source: Scopus CODEN: EMNGD doi: 10.1007/s00267-002-2704-9 Language of Original Document: English Correspondence Address: De Blois, S.; Department of Plant Science; McGill University; Macdonald Campus; 21, 111 Lakeshore Ste. Anne de Bellevue, Que. H9X 3V9, Canada References: Bariteau, L., (1987) Haut-Saint-Laurent: E?cologie et Ame?nagement, Carte Ge?omorphologique, Feuillet I. Carte a? 1/20 000 de Cazaville (Feuille no. 31 g 01-200-0101), , Centre de recherches e?cologique de Montre?al (CREM), Universite? de Montre?al; Bariteau, L., (1988) La Cartographie Ge?omorphologique au 1:20 000 de Mode?les Polyge?niques: Un Exemple des Basses Terres du Saint-Laurent, p. 185. , MSc thesis. 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    ABSTRACT = { Noncrop areas such as hedgerows in agricultural landscapes can perform several ecological and agronomic functions (e.g., habitat, movement corridors, wind-break, etc.), but their dynamics and drivers of changes are often poorly known. We conducted a study in three agricultural landscapes of southern Quebec, Canada, to assess and compare the spatial and temporal (1958-1997) dynamics of three hedgerow networks in relation to geomorphic conditions (marine, glacial, and mixed deposit) and land-use changes. Hedgerow networks were mapped and described in terms of their structure (density, degree of connectivity, and presence of trees or shrubs) and their relationship to other components of the landscape (connection to woodland). Relationships were assessed in time and space using nonparametric correlation, Mantel test, and principal components analysis (PCA). Results show significant differences between hedgerow structure for the three landscapes and distinct temporal and spatial dynamics that can be related to changes in management practices and agricultural policies. On marine deposits, increases in hedgerow density did not always correspond to an increase in their degree of connectivity, suggesting a possible reduction in network quality. On glacial deposits, hedgerow density declined following abandonment of agricultural land, but rather than disappearing, these linear structures were integrated into adjacent brush or forested areas. Our analysis reveals the complex spatial and temporal dynamics of the hedgerow networks and highlights the need to take into account spatial attributes such as connectivity and connection to woodland to evaluate more accurately overall network quality. },
    KEYWORDS = { Corridor Field margin Hedgerow network Landscape dynamics Noncrop habitat Agriculture Ecology Principal component analysis Hedgerows Environmental impact agricultural land field margin habitat corridor hedgerow spatial variation temporal variation agricultural management agriculture ecosystem environmental protection tree Canada Agriculture Conservation of Natural Resources Ecosystem Trees },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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