Thesis (Ph. D., Natural Resources)--University of Idaho, July 2007. / Major professor: Kathleen L. Kavanagh. Includes bibliographical references. Also available online (PDF file) by subscription or by purchasing the individual file.

Thesis (M.S.)--Western Washington University, 2010. / Includes bibliographical references (leaves 49-64). Also issued online.

There are many health issues surrounding Alberta’s forests today and for the future. Health impacts of diseases, pests and climate change are currently being predicted in order to implement new management ideas and solutions, and identify specific research needs. This study examines state of the art knowledge on the current impacts of Armillaria root disease (ARD) (Armillaria spp.) in Alberta’s boreal forest region. It also assesses the biology and structure of the disease within this region to predict the extent to which the boreal forest may be impacted. In the next 50 years, both Armillaria ostoyae (Romag.) Herink and Armillaria sinapina Bérubé & Dessureault will become more of a problem, due to climate change and the current mature state of Alberta’s forests. A. sinapina, as a less-pathogenic but more opportunistic species, is predicted to be more prevalent that A. ostoyae, since the former will flourish when there are environmental stresses. Management practices will require research and evaluation of the use of alternative native tree species that have a higher resistance to the Armillaria species within Alberta and the impacts of such alternatives to the forestry industry and community structure. Future research is also essential to determine if one promising biological control agent and fungus, Hypholoma fasciculare (Huds. ex. Fr.), will be a viable and cost effective method to control Armillaria species within Alberta.

Thesis (Ph.D.). / Written for the Dept. of Natural Resource Sciences. Title from title page of PDF (viewed 2009/06/08). Includes bibliographical references.

The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on December 29, 2009). Thesis advisor: Dr. C. Mark Cowell. Includes bibliographical references.

Ecotones are gradients of change between expanses of similar species composition. These regions often mark co-occurring range limits for several species, and thus are ideal for elucidating ecological and biogeographical phenomena. The forest to tundra transition (FTT) is one of the world's most prominent ecotones, but remains poorly studied especially with regard to vertebrate species occurrence. Vertebrate diversity, ecological structure and resource selection were characterized across the Yukon FTT using diversity metrics, ordination, hierarchical clustering, and resource modeling. The FTT represents an abrupt drop in vertebrate species richness within the more gradual, continental scale diversity gradient. Despite the patchiness and complexity in vegetative structure over this ecotone, the terrestrial vertebrate community is divisible into boreal, taiga, and tundra compartments. Most species conform to resource associations reported closer to the core of their range, generating remarkably consistent habitat and species associations despite a complex patchwork of contrasting habitat types.

Thesis (Ph.D.) - Carleton University, 2006. / Includes bibliographical references (p. 262-276). Also available in electronic format on the Internet.

Mémoire (M.Ress.Renouv.)--Université du Québec à Chicoutimi, 1995. / Document électronique également accessible en format PDF. CaQCU

Mémoire (M.Ress.Renouv.)--Université du Québec à Chicoutimi, 1996. / Résumé disponible sur Internet. CaQCU Document électronique également accessible en format PDF. CaQCU

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