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- 2Najar, Ahmed
- 1Abele, Suzanne E
- 1Abou Rizk, Jenna S
- 1Aftergood, Olivia SR
- 1Aguilar Rojas, Jaime
- 1Akande, Oluwabunmi J
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...
Whole-plant transpiration in Populus sp.: its determination, nocturnal effects and influence by form of nitrogenDownload
Water is a crucial factor in the life of land plants. Transpiration (E) is inevitable and it is viewed as the universal cost of accessing a CO2-rich atmosphere. Although we now know that plants lose water at night, it had been assumed that stomata remained closed after dark. Renewed interest has...
Understory protection harvesting in boreal mixedwoods, which removes mature trembling aspen (Populus tremuloides Michx.) while leaving advance regeneration of white spruce (Picea glauca (Moench) Voss), is being used in many parts of northern Alberta, Canada. The harvesting system is a step...
The province of Alberta adopted a wetland policy in 1993 to manage wetlands in the central and southern regions of the province. Despite a stated commitment to review the policy every five years, to date, no policy evaluation has been conducted. Consequently, little is known about whether wetland...
Water-Level Change in Boreal Lakes as an Indicator of Area Burned and Number of Ignitions in the Canadian Prairie Provinces.Download
The relationship between water-level fluctuations of lakes and fire activity has never been elucidated in great detail. The majority of scientific research on wildfire-hydro-climate-vegetation dynamics examines patterns of traditional climatological variables such as temperature and precipitation...
Water availability and understory influence on tree growth in reclaimed forest ecosystems, Athabasca oil sands region, Alberta, CanadaDownload
Reclaimed forest ecosystems in the Athabasca oil sands region (AOSR) have limiting factors to growth that can result in poor tree performance, as indicated by stunted growth, foliar discolouration and needle dropping, and ultimately threaten reclamation success. Indicators of reclamation success...
Vegetation responses following mountain pine beetle attack in lodgepole pine forests of west-central AlbertaDownload
Natural disturbances are an integral part of forest ecosystems and drive successional change. The boreal forest is adapted to stand-replacing fires, which have different ecological impacts than less severe disturbances, such as insect attacks. In recent years, mountain pine beetle (MPB), a bark...
Variations in jack pine (Pinus banksiana) monoterpene composition and subsequent effects on pheromone production by mountain pine beetle (Dendroctonus ponderosae)Download
The secondary compounds of pines (Pinus) can strongly affect the physiology, ecology and behaviour of bark beetles (Coleoptera: Curculionidae, Scolytinae) that feed on host sub-cortical tissues. Jack pine (Pinus banksiana) has a wide distribution range in North America and thus variations in its...
In this thesis I examined the impacts of variable retention harvesting on residual tree mortality and natural regeneration of white spruce [Picea glauca (Moench (Voss)] in northern Alberta. The VR was done in four overstory canopy compositions (ranging from deciduous dominated to conifer...