NWT RESEARCH DATABASE

Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1992 1990
Summary: The research party will continue to study past climatic variation and will continue to examine the relationship between climatic change and vegetation response. They will continue lake sediment coring and will collect tree increment cores....

Principal Investigator: Olsen, Sue K.
Licensed Year(s): 1992
Summary: The experiment will determine the interacting effects of fire severity, soil moisture and air temperature treatments on the emergence, winter survival and initial growth of treeline and near treeline tree species. The availability and viability of tree seed for successful regeneration of the treeline and near-treeline tree species will also be determined....

Principal Investigator: Beyens, L.
Licensed Year(s): 1992 1987
Summary: In the vicinity of Cambridge Bay the researcher hopes to gain more insight in the biogeography and ecology of unicellulars, i.e. diatoms and testate amoebae. A small collection of samples of terrestrial and aquatic material will be undertaken....

Principal Investigator: Landhaeusser, Simon M.
Licensed Year(s): 1992 1991 1990
Summary: To determine the maximum size of treeline tree species in a burned and unburned valley in the Caribou Hills, the mass of standing trees on different slopes and aspects will be estimated and related to the energy input. In 1992 the plots prepared in 1990 and planted and seeded in 1991, will be revisited and measurement of growth for the second growing season will be taken....

Principal Investigator: Nicholson, Barbara
Licensed Year(s): 1992
Summary: The Researcher will map the present distribution of boreal and subarctic wetlands in the Mackenzie River Basin. Wetland vegetation and water chemistry will be described for areas immediately surrounding permanent weather stations. The ecological relationships between climate, wetland water chemistry and wetland species distribution will be analyzed. A predictive indicator model will be built to pr...

Principal Investigator: Romo, J.T.
Licensed Year(s): 1992
Summary: The project examines the effects of a high-density muskoxen populations on a sedge meadow plant community. Two fences exist at the study site to exclude muskoxen and thus provide an ungrazed area used for comparison with the grazed area. Plant species abundance, plant height, grazing use of plant species and weight of plants are some of the data that will be compared among grazed and ungrazed are...

Principal Investigator: Fahselt, D.
Licensed Year(s): 1992 1991 1990
Summary: The Researcher will compare the levels of enzyme variation from populations of umbilicate species from the Arctic as well as from the southern limit of their ranges in southeastern USA. The objective will be to ascertain whether there is any correlation between the level of variability in enzyme patterns and latitude....

Principal Investigator: Viren, Tom
Licensed Year(s): 1991
Summary: Mr. Lonnie Dupre, Mr. Malcolm Vance and Mr. Jon Nierenburg will collect snow and plant material samples on behalf of Mr. Derik Muir, Department of Fisheries and Oceans, Canada and Mr. Dan Jaffe, Geophysical Institute, University of Alaska, Fairbanks....

Principal Investigator: Matthews, Steven
Licensed Year(s): 1991
Summary: The project will evaluate airborne RADAR data as well as Landsat TM and SPOT satellite data to distinguish vegetation cover types of the tundra near Baker Lake. Detailed vegetation surveys will be carried out in the field. The data will be used to classify vegetation cover types and in accuracy assessment. Wildlife habitat types will be based on the resultant classification and produced as mapped ...

Principal Investigator: Henry, Gregory
Licensed Year(s): 1991 1990
Summary: The Researchers will continue to investigate how high arctic sedge meadows respond to microclimate and grazing....