7 record(s) found for principal investigator "MacDonald, Glen" (multi-year projects are grouped):
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2000 Years of Climate Change at Treeline North of Yellowknife
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 2005
Summary: The researchers believe that the treeline zone is one of the most sensitive areas on earth to temperature changes, both natural and caused by global warming. They would like to take a small core (5 cm diameter) from the mud at the bottom of two small lakes close to Back Lake, northeast of Yellowknife. In the laboratory, they will analyze the cores for temperature-sensitive aquatic insect remains...


Post-glacial treeline change in the Campbell-Dolomite Uplands of the Inuvik area
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1993
Summary: As part of an on-going study, this research will involve collecting cores from trees located in the Campbell-Dolomite Uplands (near Campbell Lake). This data will be added to data collected in other locations (past studies) in order to determine how past climate has influenced the growth of trees (as indicated by tree rings within the tree trunk). The research is helpful in trying to understand ...


Postglacial Treeline Change in the Mackenzie-Selwyn Mountains
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1992 1990
Summary: Dr. Glen MacDonald and his team will collect lake sediment core samples from 3 or 4 small lakes in the Mackenzie Mountains, adjacent to the Canol Road for the purpose of fossil pollen and macrofossil analysis. The area will be revisited in July to conduct surveys of vegetation at and around the treeline....


The Relation Between Postglacial History and the Modern Genetic and Morphologic Diversity of Jack Pine (Pinus banksiana) in Western Canada
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1989 1988
Summary: Dr. Glen MacDonald and his team will be obtaining lake sediment cores, samples of pine needles, cones, seeds and tree-ring cores from 2 sites near Hay River. Fossil pollen from the sediment will be used to document the chronology of pine migration into the NWT following the last ice-age. The study will be used to understand postglacial history of northern plants....


The postglacial history of the northern treeline in the Kazan River region
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1988
Summary: to obtain lake sediment cores, peat samples, and tree-ring cores in the Kazan river region to examine the postglacial history of the northern treeline in this region...


Treeline plant population response to postglacial climatic change in North Central Canada.
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1987
Summary: To use fossil pollen and plant macrofossils from small lakes to reconstruct the response of plant populations in the treeline zone to climatic change. Modern pollen surface samples from small lakes in the treeline zone will be collected to aoid in the interpretation of the fossil pollen samples. The study area will include the boreal forest, forest-tundra and tundra zones near Yellowknife (115 W...


Licence #5070
Principal Investigator: MacDonald, Glen M
Licensed Year(s): 1985
Summary: To collect surface samples from small lakes to reconstruct the response of plant populations in the treeline zone to climatic change....


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