Search
Skip to Search Results- 11Spence, John (Renewable Resources)
- 2Acorn, John (Renewable Resources)
- 2Langor, David (Canadian Forest Service)
- 2Nielsen, Scott (Renewable Resources)
- 1He, Fangliang (Renewable Resources)
- 1Langor, David (Renewable Resources)
- 1Abele, Suzanne E
- 1Amos, Jared J. H.
- 1Bell, Aaron J
- 1Del Bel Belluz, Vincent
- 1Domahidi, Zoltan
- 1Kamunya, Esther W
-
Gastropod diversity in the boreal mixedwood forest of northern Alberta - variation among forest types and response to partial harvesting
DownloadFall 2010
Terrestrial gastropods are important decomposers, herbivores, and prey items in forest systems and constitute a poorly understood element of forest biodiversity in Canada. I studied gastropod assemblages in relation to forest cover type and in response to variable retention harvesting in the...
-
Saproxylic Beetles (Coleoptera) Associated With Aspen Deadwood in Broad-Leaved Boreal Mixedwood Stands
DownloadFall 2012
I assessed deadwood-associated (i.e., ‘saproxylic’) beetles (Coleoptera) along a decay gradient of trembling aspen in mature deciduous stands of the boreal mixedwood forest in NW Alberta. Various collection methods were employed to sample saproxylic beetle species. Assemblages differed between...
-
Conservation of boreal moth communities in the mixedwood boreal forests of northwestern Alberta: Impacts of green tree retention and slash-burning
DownloadFall 2012
Green tree retention (GTR), which involves leaving dispersed or clustered live trees on harvested stands, is being adopted as an alternative to clear-cutting, and to conserve biodiversity on managed forests. This thesis examines the post-harvest (7-10yrs) recovery of boreal moths following...
-
Spring 2013
Woodland caribou (Rangifer tarandus caribou) populations are threatened across Canada. Recovery plans are being implemented to address conservation priorities using the best available knowledge. I used animal location data to evaluate sampling requirements for estimating caribou population...
-
Fall 2015
The Canadian boreal forest is vital breeding habitat for North American songbirds. Extensive anthropogenic disturbances within this biome are therefore of conservation concern. Using unharvested stands as controls, I examined the effects of variable retention management (VRM) relative to...
-
The Biogeography of Ground Beetles (Coleoptera: Carabidae) on the Islands of Lac la Ronge, Saskatchewan, Canada
DownloadFall 2015
Islands offer unusual opportunities for studying theoretical concepts in ecology. I studied the role of island size and isolation in structuring assemblages of ground beetles (Coleoptera: Carabidae) on the islands and adjacent mainland of Lac la Ronge, Saskatchewan, Canada. Carabid beetles were...
-
Influence of variable retention and deadwood characteristics on saproxylic beetles in boreal white spruce stands
DownloadSpring 2016
Retention forestry aims to maintain a significant level of continuity in forest structure, composition and complexity so as to support conservation and recovery of biodiversity and ecological function on managed landscapes; however, the amount and distribution of retention that best meets...
-
Distribution and breeding ecology of boreal and northern saw-whet owls in the Boreal forests of Alberta, Canada
DownloadSpring 2018
The boreal forest is an ecologically dynamic region with a long history of natural disturbances. These dynamics now run at a different and more rapid pace in Alberta because of land-use change, forestry, and developments in the energy industry. Although boreal owls Aegolius funereus and northern...
-
Disturbance, habitat variability and biodiversity of a boreal carabid (Coleoptera: Carabidae) fauna 15 years after variable retention harvest
DownloadFall 2018
Species diversity patterns and the processes that drive them are a central focus of modern ecology. Although the spatial effects of habitat variation and disturbance on aggregate metrics like diversity and abundance have received considerable attention at local scales, ecologists have virtually...
-
Effects of clear-cutting and wildfires on succession of ground beetle (Coleoptera: Carabidae) assemblages in western Alberta
DownloadSpring 2019
I studied how carabid beetle assemblages in lodgepole pine stands have responded after clear- cut harvest and wildfires on an actively managed landscape ~20 km south of Hinton, Alberta. This work builds on and expands the focus of a previous study (Niemelä et al. 1993) conducted 23-24 years...