Habitat parameters associated with beaver dam sites in a northern Ontario watershed. Donald M. Barnes and Azim U. Mallik
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TextPublication details: Ontario : 1995Online resources: Abstract: Fifteen active and twelve no dam sites within the Swanson River drainage area of the Chapleau Crown Game Preserve were studied to determine if beaver (Castor canadensis) dam building activity was related to vegetative and physical parameters of the site. Around each sample site,9 vegetative and 5 physical parameters of the habitat were measured.T-tests and a multivariate analysis of variance (MANOVA) showed that beaver dam sites were related to: increased densities of the forage species trembling aspen (Populus tremuloides), willow (Salix spp.), and white birch (Betula papyrifera); increased densities of woody plants with a diameter of 1.5 - 2.5 cm; increased stream gradient (active dams--1.10%; no dam sites--0.50%); decreased upstream watershed area (active dams-- 521.1 ha; no dam sites--6,247.3 ha); and decreased cross sectional area (active dams--1.29 m2; no dam sites--15.8 m2). According to the Wilk's Lambda Criterion of MANOVA, 89% of the variation between active and no dam sit
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Fifteen active and twelve no dam sites within the Swanson River drainage area of the Chapleau Crown Game Preserve were studied to determine if beaver (Castor canadensis) dam building activity was related to vegetative and physical parameters of the site. Around each sample site,9 vegetative and 5 physical parameters of the habitat were measured.T-tests and a multivariate analysis of variance (MANOVA) showed that beaver dam sites were related to: increased densities of the forage species trembling aspen (Populus tremuloides), willow (Salix spp.), and white birch (Betula papyrifera); increased densities of woody plants with a diameter of 1.5 - 2.5 cm; increased stream gradient (active dams--1.10%; no dam sites--0.50%); decreased upstream watershed area (active dams-- 521.1 ha; no dam sites--6,247.3 ha); and decreased cross sectional area (active dams--1.29 m2; no dam sites--15.8 m2). According to the Wilk's Lambda Criterion of MANOVA, 89% of the variation between active and no dam sit