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Jake Schaefer

Full Professor


Research in my lab focuses on the evolutionary ecology, physiology and conservation of freshwater fishes. Much of the research utilizes species in the Fundulus notatus species complex (F. notatus, F. olivaceus and F. euryzonus) to address basic questions in evolutionary ecology. The species in this complex are closely related and known to hybridize in numerous replicate hybrid zones throughout their broadly overlapping ranges. Within areas of coexistence, the species usually segregate along the river continuum with areas of hybridization and coexistence focused on confluences. Interestingly, in some areas of the distribution, typical up and downstream distributions may be reversed. Thus, hybrid zones in this system are replicated and replicate hybrid zones vary in the degree of genetic divergence and ecology of the parental species.
More details at

  • Ecology and Evolutionary Biology (PHD) - University of Oklahoma-Norman Campus (1999)
  • MS - University of Oklahoma-Norman Campus (1995)
  • BS - Stetson University (1992)

Population and Community Ecology
Multivariate Applications in Ecology
Environmental Physiology

  • Fragmentation alters ecological gradients and headwater fish assemblage composition relative to land use in a dendritic river system, Canadian Journal of Fisheries and Aquatic Sciences,
  • Modeling patterns of coexistence of three congeneric headwater fishes, Freshwater Biology, , fwb.13486
  • Late Pleistocene range expansion of North American topminnows accompanied by admixture and introgression, Journal of Biogeography, 2019, 10.1111/jbi.13597
  • Scale dependence of sex-specific movement in a small-bodied stream fish, Freshwater Biology, 2019, 10.1111/fwb.13309
  • Stability, persistence and habitat associations of the pearl darter Percina aurora in the Pascagoula River System, southeastern USA, Endangered Species Research, 2018, 10.3354/esr00897
  • Comparative genetic isolation patterns for multiple headwater fishes in three geographic regions, Journal of fish biology, 2018
  • Ecological and landscape effects on genetic distance in an assemblage of headwater fishes, ECOLOGY OF FRESHWATER FISH, 2018, 10.1111/eff.12375
  • Fish faunal provinces of the conterminous United States of America reflect historical geography and familial composition, Biological Reviews, 2016
  • Ecological influences on the local movement dynamics of the blackspotted topminnow, Fundulus olivaceus, Behavioral Ecology and Sociobiology, 2016, 10.1007/s00265-016-2073-7
  • Dynamics of near-coastal fish assemblages following the Deepwater Horizon oil spill in the northern Gulf of Mexico, Transactions of the American Fisheries Society, 2016, 10.1080/00028487.2015.1111253
  • Clery Act
  • Preventing Discrimination & Harassment: Employees V2.3
  • Family Educational Rights and Privacy Act
  • Title IX: Preventing Sexual Misconduct for Faculty and Staff – "Responsible Employee" Edition
  • Society for the Study of Evolution
  • American Fisheries Society
  • Ecological Society of America
  • Southeasetern Fishes Council
  • Southwestern Association of Naturalists

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Contact Me

Johnson Science Tower (JST) 1007 map




Areas of Expertise

Ecology, Evolution, Ichthyology