Christopher Charles Caudill

 Research Assistant Professor

Department of Fish and Wildlife Sciences
University of Idaho
875 Perimeter Drive MS 1136
Moscow ID 83844-1136

208-885-7614 (voice)
208-301-0809 (mobile)
208-885-9080 (fax)



Spawned-out Chinook salmon on the South Fork Salmon River (1,100 km inland)   

Research Interests

My primary interest has been to understand how movement behaviors affect individual fitness and population dynamics.  Movement is important because many aquatic organisms including aquatic insects, most fishes, and riparian plants undergo a major habitat shift at some point during development, but the basic or applied implications of this movement among habitats are not well understood.  The majority of my research has used invertebrates as model systems to understand how life history, behavior, and dispersal interact to influence population and community dynamics in spatially complex habitats.  Much of this work has been at the Rocky Mountain Biological Laboratory ( 

More recently, I have continued examining the basic question of how animal movements affect aquatic populations in a conservation and management context at the University of Idaho Fish Ecology Research Lab.

Beaver pond at the Rocky Mountain Biological Lab Female Callibaetis mayfly just after emergence


2002                Ph.D., Department of Entomology, Cornell University, Ithaca, N.Y.

1995                M.S., Department of Zoology, University of New Hampshire, Durham.

1991                B.S. with Honors in Biology, University of Maryland, College Park.

Professional and Teaching Experience

Research Associate (May 2004-present), Department of Fish and Wildlife, University of Idaho.

Postdoctoral Research Fellow (2003-2004), Department of Fish and Wildlife, University of Idaho.  

Postdoctoral Fellow and Instructor, NSF  IGERT Program in Aquatic Chemical Signaling Ecology, School of Biology, Georgia Institute of Technology (2002- 2003).

Instructor, Rocky Mountain Biological Laboratory (RMBL), Gothic Colorado (1999, 2002).

Teaching Assistant, Cornell University (1995-2001).

Teaching Assistant, University of New Hampshire (1993-1995).

Faculty Research Assistant, University of Maryland, College Park and Horn Point Environmental Laboratories. (1992-1993)


Peer-Reviewed Publications- Contact Chris Caudill ( prior to downloading (required by copyright-thanks).

Transporting Juvenile Salmonids around dams impairs adult migration. Matthew L. Keefer, Christopher C. Caudill, Christopher A. Peery and Steven R. Lee.  Ecological Applications, 18(8), 2008, pp. 18881900, 2008.

Combining telemetry, GIS, and hydrodynamic models to estimate exposure to dissolved gas supersaturation downstream of hydroelectric dams in Chinook salmon. Johnson, E.L., T.S. Clabough, C.A. Peery, D.H. Bennett, T.C. Bjornn,  C.C. Caudill, and M.C. Richmond.   in press. River Research and Applications.

Distribution, behavior, and survival of overwintering adult summer steelhead: variability among Columbia River populations. Keefer, M.L, C.T. Boggs, C.A. Peery, and C.C. Caudill.  in press. North American Journal of Fisheries Management.

Beaver herbivory on aquatic plants.

Parker, J. D., C. C. Caudill and M. E. Hay. 2007. Oecologia (2007) 151:616-625.


Migration depths of adult spring and summer chinook salmon in the Lower Columbia and Snake Rivers in relation to dissolved gas supersaturation E. L. Johnson, T. S. Clabough, D. H. Bennett, T. C. Bjornn, C. A. Peery, C. C. Caudill, and L. C. Stuehrenberg

Transactions of the American Fisheries Society 134:1213-1227, 2005

Long distance downstream movements by homing adult chinook salmon

M. L. Keefer, C. A. Peery, C. C. Caudill

Journal of Fish Biology 68:944-950, 2006


Fallback by adult Sockeye salmon at Columbia River dams

G. P. Naughton, C. C. Caudill, M. L. Keefer, T. C. Bjornn, C. A. Peery, and L. C. Stuehrenberg

North American Journal of Fisheries Management 26:380-390, 2006


Route selection in a large river during the homing migration of Chinook salmon (Oncorhynchus tshawytscha)

Matthew L. Keefer, Christopher C. Caudill, Christopher A. Peery, and Theodore C. Bjornn

Canadian Journal of Fisheries and Aquatic Sciences 63: 1752-1762 (2006)


Experimental Evaluation of fishway modifications on the passage behaviour of adult chinook salmon and steelhead at Lower Granite dam, Snake River, USA.

George P. Naughton, Christopher C. Caudill, Christopher A. Peery, Tami S. Clabough, Michael A Jepson, Theodore C. Bjornn and Lowell Stuehrenberg.

River Res. Applic. 23: 99111 (2007)


Slow dam passage in adult Columbia River salmonids associated with unsuccessful migration: delayed negative effects of passage obstacles or condition-dependent mortality?

Christopher C. Caudill, William R. Daigle, Matthew L. Keefer, Charles T. Boggs, Michael A. Jepson, Brian J. Burke, Richard W. Zabel, Theodore C. Bjornn, and Christopher A. Peery

Can J. Fish Aquat. Sci. 64:979-995 (2007)

Trout predators and demographic sources and sinks in a mayfly metapopulation. Caudill, C. C. 2005. Ecology 86(4): 935-946.

Vorosmarty, C. J., C. L. Leveque, C. Revenga, C. C. Caudill, J. Chilton, E. M. Douglas, M. Meybeck, P. Balvanera, S. Barker, R. Bos, M. Maas, C. Nilsson, D. Prager, C. A. Reidy. 2005. Freshwater. Chapter 8 in Millennium Ecosystem Assessment: Conditions and Trends Assessment.

Late-season mortality during migration of radio-tagged adult sockeye salmon (Oncorhynchus nerka) in the Columbia River. Naughton, G. P., C. C. Caudill, M. L. Keefer, T. C. Bjornn, L. C. Stuehrenberg, and C. A. Peery. 2005.    Canadian Journal of Fisheries and Aquatic Sciences  62: 30-47.

Mutualisms and aquatic community structure:  the enemy of my enemy is my friend. Hay, M. E., J. D. Parker, D. E. Burkepile, C. C. Caudill, A. E. Wilson, Z. P. Hallinan, and A. D. Chequer.  2004.   Annual Review of Ecology, Evolution, and Systematics 35: 175-197.  

Molecular phylogeography and evolutionary history of the estuarine copepod, Acartia tonsa, on the Northwest Atlantic Coast. Caudill, C. C. and A. Bucklin. 2004.    Hydrobiologia 511:91-102

Empirical evidence for nonselective recruitment and a source-sink dynamic in a mayfly metapopulation. Caudill, C. C. 2003.  Ecology 84(8): 2119-2132. 

Lack of behavioral or developmental responses by mayfly larvae to trout predators. Caudill, C. C. and B. L. Peckarsky. 2003.    Ecology 84(8): 2133-2144. 

Measuring dispersal in a metapopulation using stable isotope enrichment: high rates of sex-biased dispersal between patches revealed in a mayfly metapopulation  Caudill, C. C. 2003.  . Oikos 101:624-630 

Swarming and mating behavior of high altitude populations of Baetis bicaudatus (Ephemeroptera, Baetidae): evidence of stabilizing selection for intermediate male size Peckarsky, B. L., A. R. McIntosh, C. C. Caudill, J. Dahl. 2002. Behavioral Ecology and Sociobiology  51: 530-537 

Females of the marine amphipod Jassa marmorata mate multiple times with the same or different males. Marine and Freshwater Behaviour and Physiology Clark, R., and C. C. Caudill. 2001.  34: 131-138.

Hydrologic and behavioral constraints on oviposition of stream insects: implications for adult dispersal.  Peckarsky, B. L., B. W. Taylor, and C. C. Caudill.  2000.  Oecologia 125: 186-200.

Population genetics and phylogeny of planktonic copepods. Bucklin, A., C. C. Caudill, and M. Guarnieri.  1997.    Pages 303-318 in Molecular Approaches to the Study of the Ocean.  K. Cooksey (Ed.). London.  Chapman and Hall.

Other Publications

Ecosystem and Human Well-being: Current State and Trends, Volume 1: Findings of the Conditions and Trends Working Group of the Millennium Ecosystem Assessment. Fresh Water. Pages 165-207 Vorosmarty, C.J., C.L. Leveque, C. Revenga, C.C. Caudill, J. Chilton, E.M. Douglas, M. Meybeck, P. Balvanera, S. Barker, R. Bos, M. Maas, C. Nilsson, D. Prager, C.A. Reidy. 2005. Edited by R. Hassan, R. Scholes, and N. Ash. Island Press, Washington, D.C.

Scent and taste of the deep blue sea: Book review.  Caudill, C. C. 2002.  Marine Chemical Ecology (McClintock and Baker, eds.).  Ecology 83(11): 3238-3240.



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Last updated: February 21, 2013.