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Migratory connectivity in white-throated sparrows : inferences from stable hydrogen isotope analyses
(2005-08-03)
Tracking migratory movements of birds between breeding and wintering areas is important for both theoretical and conservation purposes. In particular, information about linkages between stages of the annual cycle (i.e., ...
Covariates of Intraspecific Variation in Hibernation Expression in the Northernmost Population of Black-tailed Prairie Dogs
(2022-05-30)
Hibernation is an energy-saving strategy employed by species to survive periods of low resource abundance and inclement weather. Due to the costs and benefits associated with the use of torpor and arousal during hibernation, ...
The molecular architecture of Mamestra configurata Petitrophic Matrix
(2011-03-01)
The peritrophic matrix (PM) lines the insect midgut and is composed of chitin and protein. It is required for organization of digestion and for protection of epithelial cells from mechanical damage, pathogens, and toxins. ...
Neurobehavioural Toxicity of Bisphenol S in zebrafish (Danio rerio)
(2022-05-16)
Elevated levels of contaminants from anthropogenic activities are a pernicious problem in various ecosystems. The presence of bisphenol analogues and especially bisphenol S (BPS) in the aquatic environment has been a growing ...
A Primary Productivity Hypothesis for Disturbance-Mediated Apparent Competition for Boreal Caribou in Canada
(2022-01-17)
The most widely reported threat to populations of boreal and mountain woodland caribou (Rangifer tarandus caribou) involves what has come to be known as disturbance-mediated apparent competition (DMAC). Here, anthropogenic ...
Nearshore Habitat Associations of Fish Assemblages in Waskesiu Lake, Saskatchewan
(1999)
Knowledge of fish habitat associations in all types of lakes is important for
conservation and management to ensure that land developments or other human activities do
not have irreversible impacts on lake ecology. ...
The edge of a species' range : survival and space-use patterns of raccoons at the northern periphery of their distribution
(2006-03-29)
The raccoon (Procyon lotor) is a species that has likely benefited from environmental conditions that followed European settlement of North America. As such, the raccoon has experienced vast range expansion during the ...
Sexual reproductive processes of plants in an alpine tundra environment
(2015-08-11)
Sexual reproduction is an important mechanism shaping plant community composition that will likely be affected by unprecedented rates of climate change in Canada’s North. To anticipate potential changes in plant communities, ...
Wetland- and landscape-level effects on scoter (Melanitta spp.), scaup (Aythya spp.), and macroinvertebrates in wetlands of the Central Mackenzie Valley, Northwest Territories
(2022-02-07)
North American breeding populations of scoters (Melanitta spp.) and scaup (Aythya spp.), which nest predominantly in the rapidly changing boreal forest, were over 20% lower 2005–2014 in the western boreal forest compared ...
A Structural Investigation of Floral Nectaries in Disk and Ray Florets of Seven North American Aster Species (Asteraceae: Astereae)
(2020-09-22)
This project examined nectary morphology and anatomy of several aster species belonging to the North American clade of Astereae. Inflorescences and foliage of Doellingeria umbellata (Miller) Nees, Eurybia divaricata (L.) ...