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Joe Szewczak

Dr. Joe Szewczak is seen at night holding a pole, wearing a headlamp on his forehead.

General Information

Comparative physiology and physiological ecology- especially of bats
Phone: (707) 826-4132
Office: Science B 320B
Email: joe@humboldt.edu
Personal Website: http://users.humboldt.edu/joe/

Academic background


Summary of research

My research pursues the nuts and bolts of how animals work. In particular, I investigate processes that involve gas exchange such as acid-base state, the control of ventilation, and how animals use that gas, i.e. metabolism. Where possible, I like to explore these processes in their most extreme forms. Just as we can reveal critical elements of automotive engineering by racing Formula 1 cars, we can also learn much by studying physiological function near its limits. For this reason, the most aerobic of mammals, bats, have often been a subject for my research. I have explored their physiological functioning from the cold depths of torpor, to how they acclimatize and fly at high altitudes.

Sample publications

Graduate Students


Ashley Abitz, Amon Armstrong, Jason Holmes, Danielle Salganek, Christina Walker

Alyson Brokaw
Daniel Burrell
Ryan Byrnes
Jeffrey Clerk
Zachary Loman
Gabe Reyes
Kaley Sullenger

Amy Amones
Assessing monitoring techniques for bird populations in Sierra Nevada montane meadow and aspen communities.
Aaron Corcoran
Automated acoustic identification of nine bat species of the eastern United States.
Jean-Paul Kennedy
Bats of the northern California old growth redwood forest: The interaction of bats and old growth redwoods across a vertical gradient.
Cameron Rognan
Bioacoustic techniques to monitor populations of Great Gray Owls (Strix nebulosa) in the Sierra Nevada.
Kiera Freeman
Roosting behavior of a maternal colony of Townsends Big-eared bat, Corynorhinus townsendii.