17 record(s) found with the tag "tundra ecosystems" (multi-year projects are grouped):
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Winter Low Ground Pressure Vehicle Trials
Principal Investigator: Callow, Lin
Licenced Year(s): 2004
Summary: The objective of these trials is to evaluate the performance of Low Ground Pressure Vehicles (LGPV) on frozen tundra without surface preparation. The effects of LGPV passage on soil, permafrost, and vegetation will be monitored and the details of each tr...

Active layer growth and groundwater chemistry, Daring Lake, NWT
Principal Investigator: English, Michael C
Licenced Year(s): 2003 2002 2001 2000
Summary: The crew will fly from Yellowknife to the Tundra Ecosystem Research Station camp on Daring Lake from BHP (Ekati Mine) by helicopter. The research team itinerary consists of: (1) setting up the camp; (2) sampling all of the major streams flowing into Daring Lake for chemistry and instantaneous flow; (3) walking through several basins to decide on an intensive sampling site; and (4) installing dri...

Vegetation Responses to the Acidic Sulfur fumes at the Smoking Hills, Cape Bathurst.
Principal Investigator: Hutchinson, Tom
Licenced Year(s): 1999
Summary: The purpose of this study is to re-measure the occurrences of vegetation, identifying all the different species and measuring them quantitatively in places that were measured 13 years ago. The focus this time will be on the ability of the tundra ecosystem to recover when a strong chemical stress ceases. The team will be flown in early August from Inuvik to the old DEW Line landing strip at Mallo...

Tundra Northwest 1999
Principal Investigator: Karlqvist, Anders
Licenced Year(s): 1999
Summary: The overall goal of the expedition Tundra Northwest 1999 is to study geographic variation of terrestrial and freshwater ecosystems of the tundra. By using the CCG icebreaker Louis St. Laurent for transport and as a scientific platform the the expedition route will include a longitudinal gradient from Baffin Island to the northern coast of Alaska and a latitudinal gradient through the Canadian Arc...

Species Composition Changes Along a Gradient From Subarctic Forest to Tundra
Principal Investigator: Henry, Gregory
Licenced Year(s): 1995 1994 1993 1991
Summary: Using the latitudinal treeline, the Researchers will examine plant communities in forest, treeline and tundra communities. They will determine locations for permanent plots to monitor long-term changes in vegetation as a response to predicted global warming....

Licence #2426
Principal Investigator: Svoboda, Josef
Licenced Year(s): 1979
Summary: (1) A radiocesium study. (2) A study of how tundra plant communities have adapted and evolved, their distribution, abundance and productivity....

Licence #1963
Principal Investigator: Rouse, W.
Licenced Year(s): 1976
Summary: To develop a classification of fire effects on the microclimate of forest and tundra ecosystems....