Now showing items 1-10 of 25
Insights into biodiversity sampling strategies for freshwater microinvertebrate faunas through bioblitz campaigns and DNA barcoding
(BMC Ecology, 2013)
Background: Biodiversity surveys have long depended on traditional methods of taxonomy to inform sampling protocols and to determine when a representative sample of a given species pool of interest has been obtained. ...
Response of arctic sedges to release from grazing: leaf elongation in two species of Carex
We have used demographic methods to determine whether increased rates of leaf elongation occur in two sedges, Carex subspathacea Wormsk and Carex xflavicans Nyl., when heavily grazed by Lesser Snow Geese (Chen caerulescens ...
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 ...
Seed and vegetation dynamics in undamaged and degraded coastal habitats of the Hudson Bay lowlands.
(Ottawa : National Library of Canada = Bibliotheque nationale du Canada, 2000)
Grubbing and grazing by increasing numbers of lesser snow geese (Anser caerulescens caerulescens) have led to loss of vegetation and soil degradation in salt marshes and on beach ridges. These changes have had a deleterious ...
Camp Flicek, Churchill, Manitoba
Soil Microbial and Nutrient Dynamics During Late Winter and Early Spring in Low Arctic Sedge Meadows
(Toronto : University of Toronto, 2010)
Microbial activity occurs year-round in Arctic soils, including during the winter when soils are frozen. From 2004 to 2008 I monitored soil microbial and nutrient dynamics in low Arctic wet and dry sedge meadows near ...