I examine patterns and test hypotheses regarding the causes and consequences of the distribution, abundance, and movement of aquatic organisms. This includes determining the distribution and movement of animals (e.g., alewife, striped bass, blue catfish, crayfish and Pacific salmon) using telemetry and then relating those movements to environmental factors that cause them to stay or move. I also examine the relationships between ecological drivers and fishes including environmental heterogeneity, abiotic gradients, and anthropogenic activities.
Current and Recent Research Projects
- Quantifying density, salmon smolt predation, and movement of non-native predators in the San Joaquin River, CA
- Distribution of Chinook and Coho salmon in Puget Sound, WA
- Depth distribution of blue catfish in Milford Reservoir, KS
- Impacts of dams on fish assemblages in the Neosho River, KS
When I learn something new in R, I try to compile generic code into a reference document. Feel free to use it. Download here: Smith Code in R Last updated March 2, 2016.
Kennedy, C., M.E. Mather, J.M. Smith, J.T. Finn, L. Deegan. 2016. Discontinuities concentrate mobile predators: Quantifying organism-environment interactions at a seascape scale. Ecosphere 7: e01226. 10.1002/ecs2.1226. PDF
Demetras, N.J., D.D. Huff, C.J. Michel, J.M. Smith, G.R. Cutter, S.A. Hayes, S.T. Lindley. 2016. Development of baited predation event recorders to quantify juvenile Chinook salmon (Oncorhynchus tshawytscha) predation in a river environment. Fishery Bulletin 114:179-185. PDF
Smith, J.M., K.L. Fresh, A.N. Kagley, T.P. Quinn. 2015. Ultrasonic telemetry reveals seasonal variation in depth distribution and diel vertical migrations of sub-adult Chinook and Coho salmon in Puget Sound. Marine Ecology Progress Series 532:227-242. PDF