Biology, Department of
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Recent Submissions
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Acoustic Telemetry Provides New Insights into the Ecology of Smallmouth Bass in Eastern Lake Ontario
Smallmouth Bass (Micropterus dolomieu) are a top predator native to the Laurentian Great Lakes, with a wide distribution in North America. Our understanding of Smallmouth Bass ecology is extensive, although primarily based ... -
Temporal Evolution of Critical Traits and their Relationship to Cod Stock Collapse and Recovery
(Canadian Science Publishing, 2022-06-08)The North Atlantic Fisheries Organization response to a precipitous decline of the Flemish Cap cod (Gadus morhua) stock during the 1990s was the imposition of an 11-y moratorium on directed fishing for cod; recovery followed. ... -
Investigating the therapeutic potential of cannabidiol for Alzheimer’s disease: Using Caenorhabditis elegans that express the amyloid-beta protein
Roughly 55 million people worldwide suffer from dementia, and its prevalence is predicted to increase to about 139 million by 2050. Alzheimer’s disease (AD) is the most common form of dementia, accounting for 60-70% of ... -
Genomic evidence of long-term asexuality at the northern range limit of wetland plant, Decodon verticillatus (Lythraceae)
Many plant species shift from sexual to asexual reproduction at geographic range edges, but the impact of asexual reproduction on range expansion is largely unknown. If asexuality allows genotypes well-adapted to range ... -
A framework for 210Pb model selection and its application to 37 cores from Eastern Canada to identify the dynamics and drivers of lake sedimentation rates
(Wiley, 2022-04-26)Lake sedimentation rate represents a synthetic metric of ecosystem functioning. Many localized studies have reported a significant association between land use/land cover changes and lake sediment mass accumulation rates, ... -
What is the role of phosphorylation of the Ca2+/calmodulin-dependent glutamate decarboxylase isozyme, AtGAD1, in response to phosphate nutrition of Arabidopsis thaliana?
Orthophosphate (H2PO4−; Pi) is an essential but limiting macronutrient required for many fundamental aspects of plant metabolism, particularly photosynthesis and respiration. Pi starved (-Pi) plants elicit a Pi starvation ... -
An Integrative Perspective On the Mechanistic Basis of Context- Dependent Species Interactions
(Oxford University Press, 2022-05-24)It has long been known that the outcome of species interactions depends on the environmental context in which they occur. Climate change research has sparked a renewed interest in context-dependent species interactions ... -
Investigating the Role of Neuropeptide Receptors npr-16 and npr-24 in Caenorhabditis elegans
The conserved neuropeptide signaling pathway in C. elegans provides a promising opportunity to further advance our knowledge regarding the molecular basis of behaviour and physiology in higher organisms while paving the ... -
Investigating the Effect of Tumour Suppressor PTEN/DAF-18 Variants and Mammalian Insulin on the Insulin and Insulin-like Signaling Pathway in Caenorhabditis elegans
The insulin and insulin-like growth factor signaling (IIS) pathway is an anabolic, growth stimulating pathway highly conserved among humans and Caenorhabditis elegans (C. elegans). In humans, the tumour suppressor protein ... -
Developing diatom-based inference models to assess lake ecosystem change along a gradient of metal smelting impacts: sudbury lakes revisited
(Wiley, 2022-05-16)Mining and smelting activities have strongly influenced the Sudbury region (Ontario, Canada) since the late 19th century, leading to acidification and metal contamination in many local ecosystems. Regulations on restricting ... -
Investigating the role of Ricinus communis Ca2+-dependent protein kinase-1 (RcCDPK1) autophosphorylation and the regulatory networks of RcCDPK1 and its Arabidopsis ortholog AtCPK4
Castor (Ricinus communis) oil seeds (COS) have become an important model for studies of oil seed metabolism owing to their unusually high accumulation of storage triacylglycerides. R. communis Ca2+-dependent protein kinase-1 ... -
Expression and characterization of an antifreeze protein from the perennial rye grass, Lolium perenne
(Elsevier, 2011-06)Antifreeze proteins (AFP) are an evolutionarily diverse class of stress response products best known in certain metazoans that adopt a freeze-avoidance survival strategy. The perennial ryegrass, Lolium perenne (Lp), cannot ... -
Broadscale effects of landscape on genetic structure of polar bears
The interplay between landscape features and genetic processes (e.g., gene flow, genetic drift) ultimately shapes population structure and species distributions. Understanding the evolutionary processes linking species and ... -
ECOSYSTEM-LEVEL RESPONSES TO INCREASED ATMOSPHERIC NITROGEN DEPOSITION IN AN ONTARIO HAYFIELD OF VARYING SOIL TEXTURE
Atmospheric deposition of nitrogen (N) derived from agricultural intensification (fertilizer addition) and fossil fuel burning is likely to significantly affect the long-term stability of many ecosystems because it impacts ... -
Among-species variation in hormone concentrations is associated with urban occurrence in birds
Urbanization of natural areas is increasing worldwide, contributing to rapid biodiversity loss. While most wildlife disappears as habitats become urbanized, some species survive and even thrive in cities, though the traits ... -
Signal Evolution and Species Coexistence: Visual Signals as Mediators of Interspecific Interactions
Species coexistence is a key step in diversification, so learning about the traits that allow closely related species to live together is important for understanding the origin and maintenance of biodiversity. Signals, ... -
Estimating Effective Sizes of Canada’s Polar Bear Populations
Arctic climate continues to warm more rapidly than the rest of the planet, and species distributions are expected to change profoundly. As the Arctic’s apex predator, the polar bear (Ursus maritimus) is greatly impacted ... -
Using Diatoms to Track Road Salt Seepage into Small, Shallow, Softwater Ontario Lakes
(Canadian Science Publishing, 2022-04-04)Since the 1950s, the widespread application of road salt for winter road maintenance and safety in cold regions has led to increased conductivity levels in many freshwater systems. Salting practices have adversely affected ... -
Long-term trends in a vulnerable seabird species: Explorations of population dynamics using paleolimnology
Long-term data are critical to contextualize population declines and to establish the best management approaches. For most species, however, monitoring data are sparse leading to difficulty in assessing population baselines ... -
Cold Acclimation in Brachypodium distachyon
Freeze-thaw events, exacerbated by climate change and seasonal transition, together with the ubiquitous ice nucleation-active (INA+) phytopathogen, Pseudomonas syringae, can result in frost damage to crops. Certain cold-hardy ...
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