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Tim J. Karels

Associate Professor

Department of Biology
California State University, Northridge
18111 Nordhoff St.
Northridge, CA 91330-8303

email: karels@csun.edu

Office: (818) 677-2990; Rm. CR5320
Lab: (818) 677-6385; Rm. CR5308
Fax: (818) 677-2034
Wildlife Ecology and Management
Principles of Ecology BIOL427
Ecology and People BIOL327

Research Interests

My research interests are in understanding the diversity of processes that influence population growth in natural populations. This is a central and long-standing problem in ecology with fundamental importance in understanding population dynamics and the conservation of species. I use ground-dwelling squirrels (ground squirrels and marmots) as a model system for exploring ecological, behavioral, physiological, and evolutionary mechanisms that determine population growth. They are a taxonomically diverse group of rodents with different mating systems, social structure, and population dynamics distributed throughout the northern hemisphere from arid tropics to arctic and alpine environments. Consequently they are an excellent group with which to comparatively and/or experimentally test hypotheses in population regulation and life-history theory.

Hoary marmot
(Marmota caligata)

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