5 record(s) found with the tag "forestry" (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
Licenced 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 ...


Treeline Dynamics in the Western Canadian Arctic
Principal Investigator: Green, Scott
Licenced Year(s): 2009 2008
Summary: This licence was issued for the application # 836. The project will examine past tree growth patterns at the northern treeline in Western Canada as a baseline to predict future growth responses to climate change. Additionally, the researchers will examine tree regeneration and plant associations at the northern treeline. Growth-ring analyses will be conducted in mature treeline populations....


Photosynthetic Efficiency and Water Relations in Boreal Conifers under 24 Hour Environmental Light Conditions
Principal Investigator: Johnston-Schuetz, Cheryl
Licenced Year(s): 2007
Summary: The objective of this project is to examine the environmental thresholds to the successful establishment of a boreal (high latitude) conifer forest by measuring photosynthetic rates in conifer seedlings. Climate change has the potential to shift southern commercial tree species and treelines northward with implications for existing ecosystems and future economic development. The project’s goal ...


Ecology of white spruce populations beyond present treeline
Principal Investigator: Henry, Greg H. R.
Licenced Year(s): 1995 1994 1993 1991
Summary: The researchers will measure various parts of the trees and take seed samples found on tree islands. They will take small cores from the base of the largest stems to determine age and growth rates. The tree rings can show how well the tress were growing in the past, and this can be related to changes in the climate....


Climatic Change at the Forest/Tundra Boundary
Principal Investigator: Landhaeusser, Simon M.
Licenced Year(s): 1992 1991 1990
Summary: The Researcher and his team will seed and plant plots prepared in 1990. They will determine the germination rate, establishment and the annual growth of the seedlings. The measurements will be related to the energy input which influences these microsites....


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