Biology, Department of
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Breeding eider ducks strongly influence subarctic coastal pond chemistry
(2018)Arctic freshwater ponds are typically pristine and oligotrophic, however, seabird biovectors can markedly alter 29 water quality via enrichment with marine-derived nutrients and bioaccumulated metals. These ornithogenic ... -
Interannual variation in season length is linked to strong co-gradient plasticity of phenology in a montane annual plant
(Wiley, 2019-06-21)Species are commonly distributed along latitudinal and elevational gradients of growing season length to which they might respond via phenotypic plasticity and / or adaptive genetic differentiation. However, the relative ... -
Summer precipitation limits plant species richness but not overall productivity in a temperate mesic old field meadow
(Journal of Vegetation, 2019) -
Transcriptional and post-translational upregulation of phosphoenolpyruvate carboxylase in Arabidopsis thaliana (L. Heynh) under cadmium stress
(Elsevier, 2019-08-01)Phosphoenolpyruvate carboxylase (PEPC) is a tightly controlled anaplerotic enzyme that replenishes organic acids that have been withdrawn from the tricarboxylic acid cycle. Organic acid anions are important chelators of ... -
Rapid cold hardening and octopamine modulate chill tolerance in Locusta migratoria
(Elsevier, 2019-08-01)Temperature has profound effects on the neural function and behaviour of insects. When exposed to low temperature, chill-susceptible insects enter chill coma, a reversible state of neuromuscular paralysis. Despite the ... -
EDTP/MTMR14: A novel target for improved survivorship to prolonged anoxia and cellular protein aggregates
(Elsevier, 2019-07-13)Drosophila egg-derived tyrosine phosphatase (EDTP), a lipid phosphatase that removes 3-position phosphate at the inositol ring, has dual functions in oogenesis and muscle performance in adults. A mammalian homologous gene ... -
Partitioning resources through the seasons: a test of the competitive ability – cold tolerance trade-off hypothesis in seasonally breeding beetles
Understanding the factors that maintain and constrain biodiversity and species coexistence is a major goal in ecology. Closely related species that use similar resources often differ in their seasonal patterns of activity, ... -
An Exploration of the Intestinal Bacteria of Two Anadromous Arctic Salmonids
In teleost fish, the microbiome plays a variety of roles in host physiology and adaptability to different environments. Anadromous fish (migrating to sea after maturation and returning to freshwater to spawn) are reported ... -
Getting One's Ducks in a Row: Conservation Units of Common Eiders (Somateria mollissima) Throughout North America
Anthropogenic climate change is resulting in a variety of consequences for ecosystems and biodiversity. Collectively these changes are negatively impacting species survival and are increasing rates of extinction. Species ... -
Diversity and function of the soil microbiome in a North American forest in response to Alliaria petiolata (garlic mustard) invasion.
The disruption of soil microbial communities is thought to be a major contributor to the expansion of invasive plants. Previous research has focused on identifying how invasive plants change soil microbial diversity and ... -
Extra-pair offspring are less heterozygous than within-pair offspring in American redstarts (Setophaga ruticilla)
(2019-03-20)The vast majority of bird species are socially monogamous; however, extra-pair paternity is nearly ubiquitous and a number of theories have been proposed to explain the prevalence of this mixed mating strategy. Here, we ... -
Correlates of alternative migratory strategies in western bluebirds
(2019-03-08)Partial migration occurs when only some animals in a population migrate. While evidence suggests that migratory strategies are partially controlled by genes, individual and environmental conditions which alter the cost-benefit ... -
Evolutionary Constraints: Phenology and elevational range limits in an annual plant
All species have limits to their geographic distributions and many range limits are stable over centuries, indicating a failure to adapt to conditions beyond the range edge. This simple observation contradicts copious ... -
Daphnia vertical position and implications for the impact of the invasive zooplankton predator, Bythotrephes longimanus, on plankton communities in south-central Ontario
Species diversity and identity play an important role in determining community structure and regulating ecosystem processes. However, species interactions are often characterized by the mean effect or response, often ... -
Assessing long-term environmental trends in Ontario lakes that support Lake Trout (Salvelinus namaycush)
Oxygenated habitats for Lake Trout (Salvelinus namaycush) are projected to deteriorate with climate warming. However, a paucity of long-term limnological monitoring data impedes the ability to determine if concentrations ... -
Screening Assessments for Aquatic Invasive Species Using Species Distribution Models
Invasive species are a major cause of biodiversity loss in North American freshwaters. Once established, aquatic invasive species (AIS) can restructure food webs and change the abiotic or physical conditions of a water ... -
Coping with Thermal Challenges: Reaction Norms of Life History Traits of a Burying Beetles with Biparental Care
To succeed and thrive in different environments, individuals can express plastic phenotypes, including life history traits, to ensure some level of fitness across conditions. As such, the plasticity of traits is central ... -
Sedimentary Midges as Paleoindicators of Deep-water Oxygen Conditions Across a Broad Trophic Gradient in Boreal Lakes
Cultural eutrophication, the addition of excess nutrients to an aquatic system, is a significant water quality concern that often promotes excess algal growth and deep-water oxygen depletion. Deep-water oxygen also influences ... -
The Roles of the Neuropeptide Receptor NPR-14 in the Regulation of Sleep Behaviours in Caenorhabditis elegans
Most animals with a nervous system exhibit sleep behaviour(s) during their life cycle, which appears as a decreased level of physical activity and changes in metabolism. Even animals with a simple nervous system like ...
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