8 record(s) found with the tag "lemming" (multi-year projects are grouped):
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Regional synchrony of lemming populations in the northern Yukon and Tuktoyaktuk region
Principal Investigator: Krebs, Charles
Licensed Year(s): 1993 1992 1991
Summary: The researchers will examine the cycles in lemming abundance (i.e., increases and decreases in the lemming population) for the western arctic region. Ongoing research suggests that lemmings in the Pearce Point area do not appear to reach very high numbers as has been noted in the eastern arctic and Scandinavia. Licence issued for use of Inuvik Research Centre....

Speciation and Historical Biogeography of Collared Lemmings in North America
Principal Investigator: Eger, Judith
Licensed Year(s): 1991
Summary: The investigators will study the chromosomal and genetic variation in collared lemmings to assess the effect of isolation of different populations in glacial refugia. They will compare this species with the brown lemming....

Licence #2506
Principal Investigator: Hickie, John P.
Licensed Year(s): 1979
Summary: To monitor the intensity of ultraviolet B radiation from the sun and collect blood samples from collared lammings for vitamin D content determination. The purpose of this work is to determine if native people whose diet is changing will need supplementary vitamin D to prevent certain types of disease, (e.g. rickets)....

Licence #2477
Principal Investigator: Lewis, M.C.
Licensed Year(s): 1979
Summary: 1. general vegetation surveys. 2. plant and growth reproduction. 3. diet and food preferences of lemmings. 4. effect of lemming grazing on plant growth and reproduction. 5. mineralnutrition of lichens. 6. atmospheric sampling....

Licence #2338
Principal Investigator: Lewis, M.C.
Licensed Year(s): 1978
Summary: Studies to include: (1) general vegetation surveys (2) plant growth and reproduction (3) diet and food preferences of lemmings (4) effect of lemming grazing on plant growth and reproduction (5) determination of mineral nutrition of lichens (6) atmospheric sampling...

Licence #2322
Principal Investigator: Burns, Gordon R.
Licensed Year(s): 1978
Summary: Lemming studies: (1) To monitor population density. (2) To record the length of each population's breeding season. (3) To record the characteristics of the reproductive system related to population growth....

Licence #2230
Principal Investigator: Rausch, R.
Licensed Year(s): 1977
Summary: Collection of a small sample of lemmings to continue a comparative study of these small mammals from isolated geographic locations....

Licence #2196
Principal Investigator: Lewis, M.C.
Licensed Year(s): 1977
Summary: A general vegetation survey of the island and adjacent mainland to determine growth and reproduction of plants. To conduct a study of the diet and food preferences of lemmings and the effect of their grazing on plant growth and reproduction....