Adaptation to global change in Alberta’s mountain environment
Using the Columbian ground squirrel as a model animal species, we are examining organismal responses to patterns of global change. Because of demonstrated gene flow over the mountain environment, from alpine to foothill habitats in Alberta, the ground squirrels have evolved extreme phenotypic plasticity in their lifecycles. Thus, they are at the extreme favorable limit of flexibility to short-term changes in the physical environment that are occurring under climatic aspects of global change. In addition, the ground squirrels respond through their lifecycles to two critical climatic changes that are especially important in Alberta: the onset of spring and the intensity of midsummer warming and drying. These climatic elements exhibit increased fluctuations over the years, and our long-term studies permit testing of both basic and practical questions of animal reactions to climatic fluctuations.
PI: Dr. F Stephen Dobson (Professor, Auburn University)
Duration: 26 years ongoing (1992-present)
Collaborators: P Neuhaus (Univ Calgary), DW Coltman (U Alberta), VA Viblanc (IPHC-CNRS), JE Lane (Univ Saskatoon), etc.......
Adaptation to global change in Alberta’s mountain environment
Using the Columbian ground squirrel as a model animal species, we are examining organismal responses to patterns of global change. Because of demonstrated gene flow over the mountain environment, from alpine to foothill habitats in Alberta, the ground squirrels have evolved extreme phenotypic plasticity in their lifecycles. Thus, they are at the extreme favorable limit of flexibility to short-term changes in the physical environment that are occurring under climatic aspects of global change. In addition, the ground squirrels respond through their lifecycles to two critical climatic changes that are especially important in Alberta: the onset of spring and the intensity of midsummer warming and drying. These climatic elements exhibit increased fluctuations over the years, and our long-term studies permit testing of both basic and practical questions of animal reactions to climatic fluctuations.
PI: Dr. F Stephen Dobson (Professor, Auburn University)
Duration: 26 years ongoing (1992-present)
Collaborators: P Neuhaus (Univ Calgary), DW Coltman (U Alberta), VA Viblanc (IPHC-CNRS), JE Lane (Univ Saskatoon), etc.......
Environmental modulation of individual stress
Understanding how organisms cope with continuously changing environments requires proximate insights on how environmental variation affects individual physiology and health. This research project addresses the consequences of variation in biotic and abiotic environmental factors on individual stress. It builds upon long-term knowledge on individual life histories in Columbian ground squirrels. Its specific focus is on the consequences of environmental variation on individual health and ageing, and on the evolutionary consequences of chronic stress. We are combining an ecophysiology approach monitoring individual and populations health, with an in-depth understanding of individual behaviour using both direct observation and bio-logging, and life history to unravel the proximate determinants and ultimate consequences of individual phenotype.
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PI: Dr. Vincent A Viblanc (Researcher, IPHC CNRS, France)
Duration: 18 years ongoing (2001-present)
Sociality and disease transmission
