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2 record(s) found for principal investigator "Henry, Greg" (multi-year projects are grouped):
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Ecology of White Spruce at the Species Limit in North West Canada
Principal Investigator: Henry, Greg H R
Licensed Year(s): 2009 2008
Summary: This license has been issued for the scientific research application #868. The objectives of this research are to determine what changes have occurred in spruce trees near the treeline in response to the warming climate of the Mackenzie Delta region over the past 20-50 years. The researchers will visit sites measured in the early 1990s and repeat the same measurements, which will allow them to ...

Ecological Studies Along the Gradient From Subarctic Forest to Tundra
Principal Investigator: Henry, Greg H R
Licensed Year(s): 1995 1994 1993 1991
Summary: The researchers want to determine the age of the isolated "tree islands" and how they manage to grow so far from the treeline. Researchers look for old stems for carbon dating, and map the position of each stem. The age and growth rates of the trees are determined by counting and measuring tree-rings. This year plant communities found on south-facing slopes down the Anderson River will be studied....