We are always seeking good students to fill positions, and you should contact me directly for information on graduate positions or summer employment. Prospective students should have good academic standing, a solid understanding of ecological principles, superior field and quantitative skills, and an insatiable curiosity about natural systems. Applicants should work well on their own as well as part of a team, and all students are expected to publish their work before the end of their degree. Candidates for the positions listed below should submit a cover letter and CV to me directly in advance of a formal application to Trent University's graduate program. Postdocs are welcome to apply at any time.
NEW (Start date: 2021) Spatio-temporal dynamics in Western Chorus Frog (MSc)
In collaboration with Blazing Star Environmental and the Canadian Wildlife Service, we are assessing the patterns of distribution and occurrence of western chorus frog across its Canadian range. Western Chorus frogs are highly cryptic and are listed as Threatened in Canada, it is therefore essential that variability in population status, distribution and trends be understood. The project will involve conducting field surveys and collecting citizen science datasets to assess factors affecting species occupancy through space and time. Ultimately, the project will contribute to an improved understanding of chorus frog habitat requirements and population status across their range. There may also be an opportunity to validate eDNA as a means of monitoring chorus frog occurrence in local wetlands. The funding package includes a competitive stipend as well as coverage of all field-related travel and other expenses. Successful candidates will have a BSc in Biology or related field, familiarity with and quantitative skills in occupancy and habitat modeling, a strong work ethic, and interest in working collaboratively in a large and diverse research group. Additional desirable skills include amphibian field skills and working independently. To apply, please send a cover letter, curriculum vitae, unofficial academic transcript, and contact information for 3 references to: Dennis Murray (dennismurray@trentu.ca) and Tom Hossie (thossie@trentu.ca). The successful candidate will be enrolled at Trent University by January (preferably) or no later than May 2020, and we will accept applications until a suitable candidate is found, so apply early. See www.thomashossie.ca for additional information.
NEW (Start date: 2021) Canada lynx population ecology (PhD)
We have studied lynx behaviour intensively for the last 5 years at Kluane Lake, Yukon. As hare populations have recently crashed and are currently near a cyclic low, we need to understand how resident lynx respond to a dramatic decline in their primary prey. The project will involve radio-collarring lynx and monitoring movements and behaviour using salellite-based telemetry and accelerometry, respectively. The work will contrast contemporary movement ecology and foraging dynamics to our previous observations when hares were abundant, to gain insight into predator-prey interactions in a dynamic landscape. This work may also involve assessment of physiological or genome-level changes related to prey population decline. The PhD student will have the opportunity to develop additional research questions within the scope of the broader project.
NEW (Start date: 2021) Boreal forest responses to climate change (PhD)
We are offering a project to assess responses to climate change among native species in Canada’s boreal forest. The boreal forest comprises Canada’s largest biome but its state is rapidly deteriorating, including due to climate change. Our recent findings (Row et al. 2012 Glob. Chan. Biol doi:10.1111/gcb.12526; Murray et al. 2017 PLoS (ONE) 12(5) e0176706) forecast dire consequences to the boreal forest especially in the boundary region between Ontario-Quebec where disjunct east-west populations of native plants, birds, and mammals, and extensive loss of native biodiversity, likely will arise. Through field sampling, species distribution modelling, population viability analysis, and/or landscape genetics and adaptive genomics, the PhD student will determine: 1) the current and potential future extent of change in boreal species in the Ontario-Quebec region relative to less-impacted areas; 2) how boreal breakdown may affect population processes and viability of native species in the region; 3) whether invasives are colonizing the region disproportionately quickly compared to other regions; and 4) if native or invasive species in the region demonstrate genome-level evidence of stress or adaptation to environmental change. The PhD student will have the opportunity to develop specific research questions within the scope of the larger project.
NEW (Start date: 2021) Amphibian responses to predation risk (MSc or PhD)
We are initiating new projects to assess the responses of amphibians to environmental stressors (e.g., pathogens, contaminants, food limitation, predation risk), and exploring the heritability and plasticity of traits within and across generations and life stages. Our recent investigations in this area highlight the opportunity to test fundamental questions in stress ecology, evolutionary biology, and conservation biology via experimental, field and molecular techniques. The student will have the opportunity to develop specific research questions within the scope of the larger project.
Long-term ecological monitoring (PhD)
We are offering a project to assess the statistical limitations and biological inference of contemporary long-term ecological monitoring study designs and datasets, to help reveal the extent that existing approaches may be limited in guiding wildlife conservation programs or documenting broader patterns of environmental change. Currently, few robust long-term datasets of wildlife abundance exist, and there is the need to evaluate both the optimal design of long-term monitoring studies and the reliability of surrogate datasets (e.g., harvest statistics, habitat loss timeseries) in population analysis. Indeed, our previous work on carnivores and waterfowl (e.g., Murray et al. 2010, Ecology 91: 571-581; Murray et al. 2008 J. Wildl. Manage. 72: 1463-1472) revealed shortcomings that call into question the broader utility of existing approaches in population analysis and management. Through timeseries analysis, statistical power analysis, and simulation modelling, the project will address questions such as: 1) population timeseries attributes that are needed to reliably detect a numerical decline or increase; 2) the most robust statistical methods for assessing cyclicity and attenuation in fluctuating animal populations; 3) optimal design of wildlife surveys in heterogeneous and changing landscapes; and 4) forecasting population viability using limited or biased data. The student will have the opportunity to develop specific research questions within the scope of the larger project, and our lab-based model system (i.e., Chlamydomonas, see Borlestean et al. 2015 Frontiers in Ecology and Evolution doi: 10.3389/fevo.2015.00037) is available to test specific model predictions in an empirical context.
Design optimization for private protected areas (MSc or PhD)
We have a project developing a robust and universal strategy for selecting private land parcels for conservation. Using a variety of GIS tools, we will develop models for quantifying the conservation value of individual land parcels based on natural characteristics, anthropogenic effects, zoning, and connectivity, and assess their application using the highly fragmented southern Ontario landscape as test case. The models will be further tested across a range of restrictions to ultimately provide a set of general guidelines to assist NGOs in optimizing their choice of land parcels for protection. Ultimately, we aim to optimize procedures for designing protected areas networks across southern Ontario and beyond. If the position is filled by a PhD candidate, there will be additional opportunity to tailor specific research questions within the scope of the larger project.
Boreal forest responses to climate change (PhD)
We are offering a project to assess responses to climate change among native species in Canada’s boreal forest. The boreal forest comprises Canada’s largest biome but its state is rapidly deteriorating, including due to climate change. Our recent findings (Row et al. 2012 Glob. Chan. Biol doi:10.1111/gcb.12526; Murray et al. 2017 PLoS (ONE) 12(5) e0176706) forecast dire consequences to the boreal forest especially in the boundary region between Ontario-Quebec where disjunct east-west populations of native plants, birds, and mammals, and extensive loss of native biodiversity, likely will arise. Through field sampling, species distribution modelling, population viability analysis, and/or landscape genetics and adaptive genomics, the PhD student will determine: 1) the current and potential future extent of change in boreal species in the Ontario-Quebec region relative to less-impacted areas; 2) how boreal breakdown may affect population processes and viability of native species in the region; 3) whether invasives are colonizing the region disproportionately quickly compared to other regions; and 4) if native or invasive species in the region demonstrate genome-level evidence of stress or adaptation to environmental change. The PhD student will have the opportunity to develop specific research questions within the scope of the larger project.
Amphibian disease ecology (PhD or MSc)
We have projects to assess responses of amphibians to chytrid and/or frog virus #3 (i.e., Rana virus) infection. These pathogens are contributing to the global decline in amphibians, and there is increasing concern over their effect on larval amphibians either across strains of the pathogens themselves (which are known to have different levels of virulence), or through synergistic interactions with other environmental stressors (e.g., contaminants, food limitation, predation risk). Our recent investigations in this area highlight the opportunity to test fundamental questions in disease ecology, host-parasite co-evolution, and conservation biology via experimental, field and molecular techniques. The student will have the opportunity to develop specific research questions within the scope of the larger project.
Ambystoma salamander kin selection and aggression (PhD or MSc)
The Integrative Wildlife Conservation (Murray) lab at Trent University, Peterborough, Ontario, is seeking an MSc student to investigate kin selection in unisexual Ambystoma salamanders. This system provides unprecedented means to test kin selection theory because relatedness can range up to 100% (even among larvae born from different mothers), and there are well characterized means to experimentally manipulate the costs and benefits of kin-directed aggression. Specifically, the student will design and implement lab experiments using salamander larvae and may evaluate one of the following questions: 1) How do larvae respond to their ploidy-elevated kin?, 2) To what extent is conspecific aggression influenced by food availability and conspecific density?, 3) Does predator exposure modulate conspecific aggression among kin and non-kin? 4) How does relatedness affect cannibalistic behaviour of larvae? Students will have the opportunity to develop specific research questions within the scope of the larger project.
Salamander genomics - a whole world of interesting questions! Independent research for genomics experienced applicants only.
NEW (Start date: 2021) Spatio-temporal dynamics in Western Chorus Frog (MSc)
In collaboration with Blazing Star Environmental and the Canadian Wildlife Service, we are assessing the patterns of distribution and occurrence of western chorus frog across its Canadian range. Western Chorus frogs are highly cryptic and are listed as Threatened in Canada, it is therefore essential that variability in population status, distribution and trends be understood. The project will involve conducting field surveys and collecting citizen science datasets to assess factors affecting species occupancy through space and time. Ultimately, the project will contribute to an improved understanding of chorus frog habitat requirements and population status across their range. There may also be an opportunity to validate eDNA as a means of monitoring chorus frog occurrence in local wetlands. The funding package includes a competitive stipend as well as coverage of all field-related travel and other expenses. Successful candidates will have a BSc in Biology or related field, familiarity with and quantitative skills in occupancy and habitat modeling, a strong work ethic, and interest in working collaboratively in a large and diverse research group. Additional desirable skills include amphibian field skills and working independently. To apply, please send a cover letter, curriculum vitae, unofficial academic transcript, and contact information for 3 references to: Dennis Murray (dennismurray@trentu.ca) and Tom Hossie (thossie@trentu.ca). The successful candidate will be enrolled at Trent University by January (preferably) or no later than May 2020, and we will accept applications until a suitable candidate is found, so apply early. See www.thomashossie.ca for additional information.
NEW (Start date: 2021) Canada lynx population ecology (PhD)
We have studied lynx behaviour intensively for the last 5 years at Kluane Lake, Yukon. As hare populations have recently crashed and are currently near a cyclic low, we need to understand how resident lynx respond to a dramatic decline in their primary prey. The project will involve radio-collarring lynx and monitoring movements and behaviour using salellite-based telemetry and accelerometry, respectively. The work will contrast contemporary movement ecology and foraging dynamics to our previous observations when hares were abundant, to gain insight into predator-prey interactions in a dynamic landscape. This work may also involve assessment of physiological or genome-level changes related to prey population decline. The PhD student will have the opportunity to develop additional research questions within the scope of the broader project.
NEW (Start date: 2021) Boreal forest responses to climate change (PhD)
We are offering a project to assess responses to climate change among native species in Canada’s boreal forest. The boreal forest comprises Canada’s largest biome but its state is rapidly deteriorating, including due to climate change. Our recent findings (Row et al. 2012 Glob. Chan. Biol doi:10.1111/gcb.12526; Murray et al. 2017 PLoS (ONE) 12(5) e0176706) forecast dire consequences to the boreal forest especially in the boundary region between Ontario-Quebec where disjunct east-west populations of native plants, birds, and mammals, and extensive loss of native biodiversity, likely will arise. Through field sampling, species distribution modelling, population viability analysis, and/or landscape genetics and adaptive genomics, the PhD student will determine: 1) the current and potential future extent of change in boreal species in the Ontario-Quebec region relative to less-impacted areas; 2) how boreal breakdown may affect population processes and viability of native species in the region; 3) whether invasives are colonizing the region disproportionately quickly compared to other regions; and 4) if native or invasive species in the region demonstrate genome-level evidence of stress or adaptation to environmental change. The PhD student will have the opportunity to develop specific research questions within the scope of the larger project.
NEW (Start date: 2021) Amphibian responses to predation risk (MSc or PhD)
We are initiating new projects to assess the responses of amphibians to environmental stressors (e.g., pathogens, contaminants, food limitation, predation risk), and exploring the heritability and plasticity of traits within and across generations and life stages. Our recent investigations in this area highlight the opportunity to test fundamental questions in stress ecology, evolutionary biology, and conservation biology via experimental, field and molecular techniques. The student will have the opportunity to develop specific research questions within the scope of the larger project.
Long-term ecological monitoring (PhD)
We are offering a project to assess the statistical limitations and biological inference of contemporary long-term ecological monitoring study designs and datasets, to help reveal the extent that existing approaches may be limited in guiding wildlife conservation programs or documenting broader patterns of environmental change. Currently, few robust long-term datasets of wildlife abundance exist, and there is the need to evaluate both the optimal design of long-term monitoring studies and the reliability of surrogate datasets (e.g., harvest statistics, habitat loss timeseries) in population analysis. Indeed, our previous work on carnivores and waterfowl (e.g., Murray et al. 2010, Ecology 91: 571-581; Murray et al. 2008 J. Wildl. Manage. 72: 1463-1472) revealed shortcomings that call into question the broader utility of existing approaches in population analysis and management. Through timeseries analysis, statistical power analysis, and simulation modelling, the project will address questions such as: 1) population timeseries attributes that are needed to reliably detect a numerical decline or increase; 2) the most robust statistical methods for assessing cyclicity and attenuation in fluctuating animal populations; 3) optimal design of wildlife surveys in heterogeneous and changing landscapes; and 4) forecasting population viability using limited or biased data. The student will have the opportunity to develop specific research questions within the scope of the larger project, and our lab-based model system (i.e., Chlamydomonas, see Borlestean et al. 2015 Frontiers in Ecology and Evolution doi: 10.3389/fevo.2015.00037) is available to test specific model predictions in an empirical context.
Design optimization for private protected areas (MSc or PhD)
We have a project developing a robust and universal strategy for selecting private land parcels for conservation. Using a variety of GIS tools, we will develop models for quantifying the conservation value of individual land parcels based on natural characteristics, anthropogenic effects, zoning, and connectivity, and assess their application using the highly fragmented southern Ontario landscape as test case. The models will be further tested across a range of restrictions to ultimately provide a set of general guidelines to assist NGOs in optimizing their choice of land parcels for protection. Ultimately, we aim to optimize procedures for designing protected areas networks across southern Ontario and beyond. If the position is filled by a PhD candidate, there will be additional opportunity to tailor specific research questions within the scope of the larger project.
Boreal forest responses to climate change (PhD)
We are offering a project to assess responses to climate change among native species in Canada’s boreal forest. The boreal forest comprises Canada’s largest biome but its state is rapidly deteriorating, including due to climate change. Our recent findings (Row et al. 2012 Glob. Chan. Biol doi:10.1111/gcb.12526; Murray et al. 2017 PLoS (ONE) 12(5) e0176706) forecast dire consequences to the boreal forest especially in the boundary region between Ontario-Quebec where disjunct east-west populations of native plants, birds, and mammals, and extensive loss of native biodiversity, likely will arise. Through field sampling, species distribution modelling, population viability analysis, and/or landscape genetics and adaptive genomics, the PhD student will determine: 1) the current and potential future extent of change in boreal species in the Ontario-Quebec region relative to less-impacted areas; 2) how boreal breakdown may affect population processes and viability of native species in the region; 3) whether invasives are colonizing the region disproportionately quickly compared to other regions; and 4) if native or invasive species in the region demonstrate genome-level evidence of stress or adaptation to environmental change. The PhD student will have the opportunity to develop specific research questions within the scope of the larger project.
Amphibian disease ecology (PhD or MSc)
We have projects to assess responses of amphibians to chytrid and/or frog virus #3 (i.e., Rana virus) infection. These pathogens are contributing to the global decline in amphibians, and there is increasing concern over their effect on larval amphibians either across strains of the pathogens themselves (which are known to have different levels of virulence), or through synergistic interactions with other environmental stressors (e.g., contaminants, food limitation, predation risk). Our recent investigations in this area highlight the opportunity to test fundamental questions in disease ecology, host-parasite co-evolution, and conservation biology via experimental, field and molecular techniques. The student will have the opportunity to develop specific research questions within the scope of the larger project.
Ambystoma salamander kin selection and aggression (PhD or MSc)
The Integrative Wildlife Conservation (Murray) lab at Trent University, Peterborough, Ontario, is seeking an MSc student to investigate kin selection in unisexual Ambystoma salamanders. This system provides unprecedented means to test kin selection theory because relatedness can range up to 100% (even among larvae born from different mothers), and there are well characterized means to experimentally manipulate the costs and benefits of kin-directed aggression. Specifically, the student will design and implement lab experiments using salamander larvae and may evaluate one of the following questions: 1) How do larvae respond to their ploidy-elevated kin?, 2) To what extent is conspecific aggression influenced by food availability and conspecific density?, 3) Does predator exposure modulate conspecific aggression among kin and non-kin? 4) How does relatedness affect cannibalistic behaviour of larvae? Students will have the opportunity to develop specific research questions within the scope of the larger project.
Salamander genomics - a whole world of interesting questions! Independent research for genomics experienced applicants only.