6 record(s) found with the tag "white spruce" (multi-year projects are grouped):
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Ecology of white spruce at the species limit in NWT, Canada
Principal Investigator: Walker, Xanthe J
Licenced Year(s): 2009 2008
Summary: The overall objective of this research is to determine the impact of climate change on the ecological patterns and processes of white spruce trees within the forest-tundra transition zone in the Tuktoyaktuk region of the Northwest Territories, Canada. White spruce reproduction, establishment, and growth will be assessed to determine how these parameters may have changed since they were last measur...


Tree regeneration on seismic lines
Principal Investigator: Greene, David F
Licenced Year(s): 2005 2004
Summary: The purpose of this project is to identify the factors that promote or retard forest regrowth after seismic line cutting. Little was known about tree regeneration on seismic lines until the 2001-2003 study by Seccombe-Hett and Walker-Larsen, which showed that older lines were well-stocked but that the delay in coloniziation might be caused by dramatic subsidence and resulting water-logging. ...


Dispersal of white spruce seeds and pollen/understory scarification in a mast year
Principal Investigator: Greene, David F
Licenced Year(s): 2002
Summary: The long distance dispersal of tree pollen and seeds is of considerable interest as we ask how fast plants can migrate in response to rapid climate change. Examination of seed dispersal will actually be based on looking at germinants (rather than seeds)...


Near-surface ground ice in sediments of the Mackenzie Delta region, NWT
Principal Investigator: Kokelj, Steven V
Licenced Year(s): 2004 2003 2002 2001 2000 2000 1999
Summary: This project investigates the the distribution and amount of near-surface ice in sediments of the Mackenzie delta area near Inuvik. Sites near Inuvik will be accessed via road and sampled using a hand held power auger. Soil cores will be removed and taken to the Inuvik Research Center for subsequent examination. The thickness of permafrost will be measured by near-surface water jet drilling which ...


Changes in plant communities from subarctic forest to tundra
Principal Investigator: Henry, Gregory H.R.
Licenced Year(s): 1995 1994 1993 1991
Summary: This study continues from the research conducted in 1991 where we examined the plant community and assessed plant distribution as the subarctic forest changes to tundra. We are interested in how the smaller plant species are influenced by changes in the number of trees that are nearby as well as changes in climate. Permanent plots will be established in order to monitor any changes in the plant ...


Licence #2757
Principal Investigator: Greene, David F
Licenced Year(s): 1982
Summary: To undertake a study of white spruce, genus (Picea glauca). i) digging of seedlings ii) coring of mature trees iii) digging 3 soil pits iv) collecting plant samples v) collecting seed samples vi) felling approx. 15 trees (all sizes - one location) This is the field work in conjunction with an MSc. thesis....


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