Now showing items 1-10 of 19
Goose-induced Changes in Vegetation and Land Cover between 1976 and 1997 in an Arctic Coastal Marsh
(Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, 2005)
Since the 1970s, a breeding colony of lesser snow geese (Chen caerulescens caerulescens L.) at La Pérouse Bay, Manitoba, has grown 8% annually. This increase has led to significant loss of plant cover in all major salt- ...
Nutrient Limitation of Plants and Soil Microbial Growth in an Arctic Coastal Salt Marsh.
(Ottawa : National Library of Canada = Bibliothèque nationale du Canada, 2005)
In order to assess the nutrient limitation of plants and soil microorganisms in the Arctic coastal salt marsh at La Pérouse Bay, Manitoba, a nitrogen (N) and phosphorus (P) fertilization experiment was conducted. The ...
Robert L. Jefferies doing fieldwork in La Perouse Bay near Churchill, Manitoba
Photograph of R.L. Jefferies in La Perouse Bay near Churchill, Manitoba in 1985.
Lesser Snow Geese flying over salt-marsh flats at Moon La Pérouse Bay,1983.
Lesser Snow Geese flying over salt-marsh flats at Moon La Pérouse Bay, Hudson Bay, Churchill, Manitoba, Canada.
The role of lesser snow geese in positive, degenerative feedback processes resulting in the destruction of salt-marsh swards.
A positive feedback cycle between soil salinity and graminoid growth, triggered by intensive grazing and grubbing by geese, is proposed to account for the loss of graminoid vegetation in an arctic salt marsh (La Pérouse ...