BuddleShorthouse2008

Reference

Buddle, C.M. and Shorthouse, D.P. (2008) Effects of experimental harvesting on spider (Araneae) assemblages in boreal deciduous forests. Canadian Entomologist, 140(4):437-452.

Abstract

Two large-scale forestry experiments, in Quebec (Sylviculture et amenagement forestiers ecosysystemique (SAFE)) and Alberta (Ecosystem Management by Emulating Natural Disturbance (E MEND)), were established in the late 1990s to test the effects of alternative silvicultural strategies (e.g., partial cutting) oil biodiversity in northern boreal forests. We collected spiders in pitfall traps 2 years after the application of partial-cutting treatments ill deciduous stands at EMEND and 6 years after similar treatments in deciduous stands at SAFE. Although we are aware of the challenges imposed by disparate locations and whole-scale experimental methods. our objective was to compare the effects of partial cutting oil spider assemblages (diversity and community composition), and ill doing SO, to formulate a few general Statements. Overall, 98 species (6107 individuals) were collected from Alberta and 86 species (3414 individuals) from Quebec. Of these, 44 species were common to both regions. Ordination and indicator-species analyses revealed a distinct effect of geographic separation: the spider assemblages in deciduous stands within the boreal plains ecoregion of Alberta and the boreal shield ill Quebec were distinct. However, the effects of partial cutting oil spider assemblages within each project were similar: removal of 25%-33% of trees shifted a characteristic old-growth fauna toward one more typical of clearcuts. Indicator-species analysis also revealed the dominance of wolf spider (Lycosidae) species in clearcuts Within both experiments and we present evidence that clear-Cutting homogenizes spider assemblages. Old-growth forests contain spider faunas that are easily disrupted by moderate partial Cutting. In the face of: intense harvesting practices, managing for the maintenance of biodiversity and conservation of spider faunas in northern forests will require retention of old-growth forests.

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@ARTICLE { BuddleShorthouse2008,
    AUTHOR = { Buddle, C.M. and Shorthouse, D.P. },
    TITLE = { Effects of experimental harvesting on spider (Araneae) assemblages in boreal deciduous forests },
    JOURNAL = { Canadian Entomologist },
    YEAR = { 2008 },
    VOLUME = { 140 },
    PAGES = { 437-452 },
    NUMBER = { 4 },
    MONTH = { jul },
    AF = { Buddle, Christopher M.EOLEOLShorthouse, David P. },
    PG = { 16 },
    SN = { 0008-347X },
    UT = { ISI:000258940500004 },
    ABSTRACT = { Two large-scale forestry experiments, in Quebec (Sylviculture et amenagement forestiers ecosysystemique (SAFE)) and Alberta (Ecosystem Management by Emulating Natural Disturbance (E MEND)), were established in the late 1990s to test the effects of alternative silvicultural strategies (e.g., partial cutting) oil biodiversity in northern boreal forests. We collected spiders in pitfall traps 2 years after the application of partial-cutting treatments ill deciduous stands at EMEND and 6 years after similar treatments in deciduous stands at SAFE. Although we are aware of the challenges imposed by disparate locations and whole-scale experimental methods. our objective was to compare the effects of partial cutting oil spider assemblages (diversity and community composition), and ill doing SO, to formulate a few general Statements. Overall, 98 species (6107 individuals) were collected from Alberta and 86 species (3414 individuals) from Quebec. Of these, 44 species were common to both regions. Ordination and indicator-species analyses revealed a distinct effect of geographic separation: the spider assemblages in deciduous stands within the boreal plains ecoregion of Alberta and the boreal shield ill Quebec were distinct. However, the effects of partial cutting oil spider assemblages within each project were similar: removal of 25%-33% of trees shifted a characteristic old-growth fauna toward one more typical of clearcuts. Indicator-species analysis also revealed the dominance of wolf spider (Lycosidae) species in clearcuts Within both experiments and we present evidence that clear-Cutting homogenizes spider assemblages. Old-growth forests contain spider faunas that are easily disrupted by moderate partial Cutting. In the face of: intense harvesting practices, managing for the maintenance of biodiversity and conservation of spider faunas in northern forests will require retention of old-growth forests. },
    KEYWORDS = { COARSE WOODY DEBRIS; NATURAL DISTURBANCE; ECOSYSTEM MANAGEMENT; SOUTHERN FINLAND; CENTRAL ALBERTA; BIODIVERSITY; SUCCESSION; DIVERSITY; COMMUNITY; WILDFIRE },
    OWNER = { brugerolles },
    TIMESTAMP = { 2008.09.26 },
}

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