Alexej Sirén

Past Fellow

UMass Amherst

Research Interests

I am a wildlife ecologist interested in abiotic and biotic forces that shape population and community dynamics of boreal and subboreal species along distributional edges. Through camera trapping, snow tracking, pellet count surveys, and occupancy and density modeling, I partnered with NH Fish and Game, VT Fish and Wildlife, US Forest Service, and US Fish and Wildlife Service to take a landscape approach to study the impacts of climate and forest dynamics on montane wildlife.

Projects

Increasing the resilience and resistance of climate-vulnerable northeastern species and ecosystems

Mechanisms for species responses to climate change: Are there biological thresholds?

Distributional changes in spruce-fir forests and forest-dependent wildlife: effects of climate variability and climate change

Education

Ph.D.: Department of Environmental Conservation, UMass Amherst, MA, 2021

M.Sc.: Department of Natural Resources and the Environment, University of New Hampshire, NH, 2013

B.A., Environmental Studies, Vermont College (Union University)

Publications

Abiotic stress and biotic factors mediate range dynamics on opposing edges Habitat use as indicator of adaptive capacity to climate change SNAPSHOT USA 2019: a coordinated national camera trap survey of the United States

Final Report: Examining the mechanisms of species responses to climate change: Are there biological thresholds?Local climate determines vulnerability to camouflage mismatch in snowshoe hares

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