Luke Etchison (letchison2@bsu.edu) is a Ph.D. student in biology at Ball State University. He completed a BS and MS in Biology at BSU. Luke's research interests are river habitat and fish distributions.

                           

Publications:

Pyron, M., L. Etchison, and J. Backus. 2014. Fish assemblages of floodplain lakes in the upper Ohio River basin. Northeastern Naturalist 21:419-430.

Etchison, L., and M. Pyron. 2014. Day and night substrate use in six minnow species. American Midland Naturalist 171:321-327.

Pyron, M., L. Etchison, and J. Backus. Accepted. Fish assemblages of floodplain lakes in the upper Ohio River basin. Northeastern Naturalist.

Etchison, L., S.J. Jacquemin and M. Pyron. 2012. Morphological variation of rusty crayfish Orconectes rusticus (Cambaridae) with gender and spatial gradients. International Journal of Biology 4:163-171.

Presentations:

Etchison, L. and M. Pyron. Side-scan sonar to quantify fish habitat for an entire river. Sigma Xi invited seminar, Weber State University, Ogden, UT, Nov 2014.

Pyron, M. and L. Etchison. Freshwater gastropod morphology and diet across geographical ranges. Invited presentation, Weber State University, Ogden, UT, Nov 2014.

Pyron, M. and L. Etchison. Regime shift in a large river fish assemblage. Invited seminar, University of New Mexico Museum of Natural History, Albuquerque, NM, Nov 2014.

Pyron, M. and L. Etchison. Freshwater gastropod morphology and diet across geographical ranges. Invited presentation, Pan American University, Edinberg, TX, Nov 2014.

Pyron, M. and L. Etchison. Regime shift in a large river fish assemblage. Invited seminar, University of Texas Tyler, Tyler, TX, Nov 2014.

Pyron, M. and L. Etchison. Freshwater gastropod morphology and diet across geographical ranges. University of Oklahoma, Norman, OK, Nov 2014.

Etchison, L. and M. Pyron. Side-scan sonar to quantify fish habitat for an entire river. Invited seminar, Kansas State University, Manhattan, KS, Nov 2014.

Etchison, L. and M. Pyron. GIS analysis of river habitat and fish assemblage structure. Poster presentation, Joint Meeting of Ichthyologists and Herpetologists, Jun 2014.

Pyron, M. and L. Etchison. Gastropod responses to predation are contingent on traits. Joint Aquatic Sciences Meeting, Portland, OR, May 2014.

Etchison, L.J. and M. Pyron. GIS analysis of river habitat and fish assemblage structure. Joint Aquatic Sciences Meeting, Portland, OR, May 2014.

Pyron, M. and L. Etchison. Gastropod responses to predation threat are contingent on traits. Southwestern Association of Naturalists Annual meeting, Stillwater, OK, Apr 2014.

Etchison, L., M. Pyron, and C. Taylor. Morphological variation across the range of a widespread crayfish in native and invasive locations. Indiana Chapter of the American Fisheries Society, Muncie, IN, Feb 2014.

Etchison, L., M. Pyron, C. Taylor and J. Knouft. Morphology of crayfish: effects of landuse and hydrology. Midwest Fish & Wildlife Conference, Kansas City, KS, Jan 2014.

Etchison, L. and M. Pyron. Fish assemblages and side scan sonar in the Wabash River of Indiana. American Society of Ichthyologists and Herpetologists, Albuquerque, NM, Jul 2013.

Pyron, M., L. Etchison, and J. Backus. Fish assemblages of Ohio River watershed oxbow habitat. Society for Freshwater Science Conference, Jacksonville, FL, May 2013.

Etchison, L. J., and M. Pyron. Fish assemblages and side scan sonar in the Wabash River of Indiana. Society for Freshwater Science Conference, Jacksonville, FL, May 2013.

Etchison, L. and M. Pyron. Niche breadth variation of fish assemblages in the Wabash River. Southwestern Association of Naturalists, Lake Charles, LA, Apr 2013.

Pyron, M., L. Etchison and J. Backus. Fish assemblages of Ohio River watershed oxbow habitat. Southwestern Association of Naturalists, Lake Charles, LA, Apr 2013.

Etchison, L. and M. Pyron. Niche breadth of fish assemblages in the Wabash River. Indiana Chapter of the American Fisheries Society, Lafayette, IN, Mar 2013.

Pyron, M. and L. Etchison. Fish assemblages on a GIS map of the Wabash River, American Fisheries Society, St. Paul, MN, Aug 2012. 

Etchison, L., S.J. Jacquemin, M. Pyron, A. Garza and C. Taylor. Temporal and spatial morphological variation of northern crayfish. American Fisheries Society, St. Paul, MN, Aug 2012.

Etchison, L. and M. Pyron. Quantifying substrates to explain stream fish assemblages. American Society of Herpetologists and Ichthyologists, Vancouver, CA, Aug 2012.

Pyron, M. and L. Etchison. Species distribution models of North American freshwater gastropods. Society for Freshwater Science, Louisville, KY, May 2012.

Etchison, L., S.J. Jacquemin, A. Garza, M. Pyron, and C. Taylor. Temporal and spatial morphological variation of Northern Crayfish (Orconectes virilus). Society for Freshwater Science, Louisville, KY, May 2012.

Etchison, L., Doll, J. and M. Pyron. Using side scan sonar to predict abundance of smallmouth bass (Micropterus dolomieu) and rockbass (Ambloplites rupestris) in the West Fork White River, Indiana. Indiana chapter of the American Fisheries Society, Indianapolis, IN, Feb 2012.

Etchison, L. and M. Pyron. Diel variation in substrate preference of cyprinid fishes. American Society of Ichthyologists and Herpetologists, Minneapolis, MN, Jul 2011.

Etchison, L. and M. Pyron. Diel variation in substrate preference of cyprinidae fishes. Southwestern Association of Naturalists, University of Texas Tyler, Apr 2011.

Etchison, L., M. Pyron, and J. Beugly. Diel variation in substrate preference of cyprinidae fishes. Indiana Chapter of the American Fisheries Society, Elkhart, IN, Feb 2010.

Etchison, L., J. Beugly, and M. Pyron. Diel variation in substrate preference of cyprinidae fishes. Midwest Fish and Wildlife Conference, Springfield, IL, Dec 2009.