Browsing Biology, Department of by Title
Now showing items 39-58 of 406
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Bacterial low temperature survival, ice nucleation proteins and ice-associating polymers
(2010-01-29)Microorganisms have developed ways to preserve cellular functions under low temperature conditions using a variety of biochemical adaptations including the modification of ice formation. In order to conduct a limited survey ... -
The behaviour of largemouth bass in Lake Opinicon, Ontario: A biological perspective for the evaluation of Murphy Bay fish sanctuary
(2010-04-01)This study provides a biological perspective on the potential of using year-round sanctuaries to protect largemouth bass (Micropterus salmoides). Although the Rideau Lakes bass sanctuaries have been present for more than ... -
Behavioural and Metabolic Characterization of NPR-9 and AIB Signaling Dynamics in Caenorhabditis Elegans
Caenorhabditis elegans inhabit heterogeneous environments and are often faced with diverse environmental cues. The nematode must modulate behavioural and physiological mechanisms to avoid aversive environmental conditions ... -
Behavioural Correlates of Social Dominance in Male Zebra Finches
Illuminating the adaptive nature of animal behaviours is a major goal of evolutionary biology, and the fitness consequences for many behaviours have been well-documented. Animal personality research seeks to achieve this ... -
Biochemical and Molecular Characterization of AtPAP25, a Novel Cell Wall-Localized Purple Acid Phosphatase Isozyme Upregulated by Phosphate-Starved Arabidopsis Thaliana
(2012-09-10)Upregulation of intracellular and secreted acid phosphatases (APases) is a universal response of orthophosphate-starved (-Pi) plants. APases hydrolize Pi from a broad spectrum of phosphomonoesters at an acidic pH. Plant ... -
Biochemical Responses of Arctic Soil Communities to Anthropogenic Stress
(2013-06-04)We are living in the era of climate change which becomes more complicated whenever some new environmental issue emerges only to get linked with this already existing challenge. Engineered nanoparticle (NP) contamination ... -
Biogeography and Diversification of the Andean Seedsnipes (Thinocoridae): An Antarctic Avian Lineage?
(2011-08-18)South America and the Andes harbour a rich biodiversity. High levels of in-situ speciation, survival of relict lineages into modern times, and mixing of biotas (Gondwanian and North American), have been demonstrated to ... -
Biological Impacts and Uses of Black Bass Competitive Fishing Tournaments on Large Lake Systems
(2016-09-29)Recreational fisheries in North America are valued between $47.3 billion and $56.8 billion. Fisheries managers must make strategic decisions based on sound science and knowledge of population ecology, to effectively conserve ... -
Biomanipulation in two Ontario Precambrian Shield lakes: a multi-proxy paleolimnological analysis
(2012-10-18)Food web biomanipulations provide the means to partly control water quality problems (i.e. algal blooms) in lakes by altering internal ecological mechanisms. However biomanipulation mechanisms are complex and the results ... -
Bioremediation of arsenic and cadmium in a Populus tremula x Populus alba mutant
The use of plants to remediate contaminated lands is of growing interest to the scientific community because of its ease of implementation, cost effectiveness and ability to stabilize contaminated soils. A novel Populus ... -
Black-Capped Chickadee Dawn Chorus Singing Behaviour: Evidence for Communication Networks
(2008-09-18)There has been a recent paradigm shift in the study of animal communication from examining interactions as dyads to considering interactions as occurring in a communication network. The dawn chorus of songbirds, a striking ... -
Body size and fitness in plants: Revisiting the selection consequences of competition
(Elsevier, 2015)Having capacity for a relatively large plant body size is usually regarded as a key functional trait associated with success under competition between resident species within natural vegetation. This traditional ... -
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 ... -
A BROAD SCALE INVESTIGATION OF DISPERSAL CONSTRAINTS ON THE NORTHERN RANGE LIMIT OF A PACIFIC COASTAL DUNE PLANT
Species are expected to occur and persist where environments allow for population self-replacement, and be limited where biotic and abiotic conditions shift outside their recognized niche. However, many species lack the ... -
The Calmodulin-Like Protein CML42 is Involved in Trichome Branching in Arabidopsis
(2009-09-16)The Snedden lab has been studying a family of Ca2+-binding proteins from Arabidopsis that are related to the prototypical Ca2+ sensor calmodulin (CaM) and are termed CMLs (CaM-like proteins). Previous work on CML42 ... -
Can genomic tools aid conservation of an arctic seabird, the northern fulmar (Fulmarus glacialis)?
Human activities and climate change threaten Arctic ecosystems. Population genetics and genomics may help conservationists appropriately manage threatened species both by (1) determining the population genetic structure ... -
Carry-over effects in American redstarts: Implications for sexual selection and behaviour
(2008-09-23)Migratory birds spend most of the year on the over-wintering grounds or traveling between breeding and wintering areas, but research has focused on the relatively short breeding period. As a consequence, we have only a ... -
Cellular Mechanisms Involved in Stress-Induced Coma and CNS Spreading Depression in the Locust
(2010-08-06)Spreading depression (SD) is an interesting and important phenomenon due to its role in mammalian pathologies such as migraine, seizures, and stroke. Until recently investigations of the mechanisms involved in SD have ... -
Cellular signalling pathways involved in thermoprotection of neural ciruit function in the locust.
(2009-08-27)Environmental temperature is arguably one of the most important abiotic physical factors affecting insect behaviour. Temperature affects virtually all physiological processes including those that regulate nervous system ... -
Changes in climate and catchment processes over the middle and late Holocene in the boreal region of northeastern Ontario, Canada
The climate of North America has varied substantially over the Holocene. Holocene Thermal Maximum (HTM) warmth occurred earlier in the west with associated aridity, compared to the east which was humid. Specific regions ...