Imperiled fish conservation
Fish life history and reproductive ecology
Historical variation in stream fish assemblages
Spatial ecology in dendritic stream networks
Dr. Frank Cross once asked “How will the unprecedented loss of species of fishes from the Midwest during the last 40 years affect the lives of Kansans? Will Kansans respond to the loss of water on the high plains and the depletion of subsurface aquifers before their lives are changed immeasurably for the worse? How can scientists and other interested people determine solutions?” The basis of my research relates to determining causal factors for fish species declines in and outside of the Great Plains, with the ultimate goal of developing solutions for water and species loss.
Joshuah S. Perkin, Ph.D.
Division of Biology
Kansas State University
116 Ackert Hall
Manhattan, Kansas 66506
Kansas State University – December 2012
Doctor of Philosophy, Biology: Ecology and Evolutionary Biology
Major Advisor: Dr. Keith B. Gido
Dissertation Title: Fragmentation in stream networks: quantification, consequences, and implications to decline of native fish fauna.
Texas State University-San Marcos – May 2009
Master of Science, Aquatic Resources
Thesis Title: Historical composition and long-term trends of fish assemblages in two Texas rivers and movement and microhabitat associations of Guadalupe bass in the Pedernales and South Llano rivers.
Texas State University-San Marcos – August 2006
Bachelor of Science, Aquatic Biology
Undergraduate Research Title: Status, native distribution, and life history aspects of the chub shiner Notropis potteri.
Costigan, K. H., M. D. Daniels, J. S. Perkin, and K. B. Gido. 2014. Longitudinal variability in hydraulic geometry and substrate characteristics of a Great Plains sand-bed river. Geomorphology In Press. PDF
Alexander, A. M., and J. S. Perkin. 2013. Notes on the distribution and feeding ecology of a relict population of the cardinal shiner, Luxilus cardinalis (Teleostei: Cyprinidae), in Kansas. Transactions of the Kansas Academy of Science 116:11-21. PDF
Perkin, J. S., Z. R. Shattuck, J. E. Gerken, and T. H. Bonner. 2013. Fragmentation and drought legacy correlate with Burrhead Chub distribution in subtropical streams of North America. Transactions of the American Fisheries Society 142:1287-1298. PDF
Dodds, W. K., J. S. Perkin, and J. E. Gerken. 2013. Human impact on freshwater ecosystem services: a global perspective. Environmental Science and Technology 47:9061-9068. PDF
Perkin, J. S., K. B. Gido, O. Al-Ta'ani, and C. Scoglio. 2013. Simulating fish dispersal in stream networks fragmented by multiple road crossings. Ecological Modelling 257:44-56. PDF
Perkin, J. S., and K. B. Gido. 2012. Fragmentation alters stream fish community structure in dendritic ecological networks. Ecological Applications 22:2176-2187. PDF
Perkin, J. S., Z. R. Shattuck, and T. H. Bonner. 2012. Reproductive ecology of a relict ironcolor shiner (Notropis chalybaeus) population in the headwaters of the San Marcos River, Texas. American Currents 37(2):13-23. PDF
Heard, T. C., J. S. Perkin, and T. H. Bonner. 2012. Intra-annual variation in fish communities and habitat associations in a Chihuahua Desert reach of the Rio Grande/Rio Bravo del Norte. Western North American Naturalist 72:1-15. PDF
Perkin, J. S., Z. R. Shattuck, and T. H. Bonner. 2012. Life history aspects of a relict ironcolor shiner Notropis chalybaeus population in a novel spring environment. American Midland Naturalist 167:111-126. PDF
Perkin, J. S., and K. B. Gido. 2011. Stream fragmentation thresholds for a reproductive guild of Great Plains fishes. Fisheries 36:371-383. PDF
Perkin, J. S., and T. H. Bonner. 2011. Long-term changes in flow regime and fish assemblage composition in the Guadalupe and San Marcos rivers of Texas. River Research and Applications 27:566-579. PDF
Perkin, J. S., Z. R. Shattuck, P. T. Bean, T. H. Bonner, E. Saraeva, and T. B. Hardy. 2010. Movement and microhabitat associations of Guadalupe bass in two Texas Rivers. North American Journal of Fisheries Management 30:31-45. PDF
Perkin, J. S., C. S. Williams, and T. H. Bonner. 2009. Aspects of chub shiner Notropis potteri life history with comments on native distribution and conservation status. American Midland Naturalist 162:279-291. PDF
Current Research Projects:
Mapping and Predicting Groundwater-Mediated Hydrologic Connectivity for Great Plains Prairie Rivers and Streams
Conservation Priorities for Great Plains Fish Communities Based on Riverscape Connectivity and Genetic Integrity of Populations
Fragmentation and Hydrologic Variability Ratchet Down Great Plains Stream Fish Diversity
Historical Changes in Fish Assemblage Composition Following Water Quality Improvement in the Mainstem Trinity River of Texas