Jean Krejca, Vita


The University of Texas at Austin
Integrative Biology PAT 140
1 University Station CO930
Austin, TX 78712-0253

Complete CV available as pdf file [20 kb].

Photo (c) Steve Taylor 1998

Doctoral Candidate. University of Texas, Austin, doctoral research focuses on troglobites of Texas and Mexico.
B.S. in Zoology. Southern Illinois University with departmental honors for cave sculpin research, May 1995.


  • Cave biology, cave photography
  • Texas field guide [note: all photographs in this link are the photographer(s) ]
  • Sequoia and King's Canyon National Parks cave biology inventory
  • Aerial surveys using a powered paraglider
  • Using aquifer organism genes as a dye tracer in karst
  • Cave exploration and cartography projects
  • Cave diving

    Mitchell Award (National Speleological Society) - August 1993, awarded for best scientific paper.
    Rope climbing awards (National Speleological Society) - August 1993, first place 120 and 30m 3 knot system.
    Cartography award (National Speleological Society) - August 1993, honorable mention for map of Clay Cave, Arkansas.
    Top 5 Graduating Seniors in College of Science, SIUC, spring 1995.
    Phi Kappa Phi national and regional fellowship, spring 1997.
    Karst Research Grant, Cave Research Foundation, 1999.
    UT Zoology Departmental and Continuing Fellowship, summer/fall 1998, spring 1999, fall/spring 2001-02.
    Tinker Fellowship, UT Institute for Latin American Studies, summer 1999.
    National Speleological Society Fellow Award, summer 2001, for dedication to the goals of the Society.
    UT Environmental Studies Institute, spring 2001, for interdisciplinary research.
    Ralph Stone Award (National Speleological Society) spring 2001, for cave biology research.

    United States Fish and Wildlife Service: Ecologist/Cave Invertebrate Specialist. Provide technical expertise for maintenance of endangered cave species in Texas. Includes work with landowners and developers regarding compliance with the Endangered Species Act. 11/00-present.
    George Veni and Associates: Biologist. Performed faunal inventories of caves for endangered species monitoring in Texas. September 1998.
    Texas Memorial Museum: Ropework specialist and biologist. Assisted geologists, cave divers, and other biologists at remote in-cave sites in study of troglobitic fauna. Funded by a grant from the U.S. Mexico Foundation for Science. March 1997.
    North Carolina State Museum: Biologist. Performed an inventory of bats, using mistnetting and telemetry. August 1996.
    3D/Environmental: Biologist, field team leader. Performed an inventory of bats, May 1996 - August 1996.
    Illinois Natural History Survey: Technical Assistant. Surveyed the status of an Illinois endemic cave adapted amphipod, Gammarus acherondytes, for the U.S. Fish and Wildlife Service. May 1995.
    Parsons Engineering Science, Inc.: Scientist. Cave bat inventory in Nashville, Tennessee. April 1994 - May 1994.
    Illinois Natural History Survey: Field Assistant. Performing a status survey of the endemic Illinois Cave Amphipod, Gammarus acherondytes. May 1993 - September 1993.
    Illinois Natural History Survey: Mammalogist. Conducted a comprehensive faunal inventory of Illinois caves in relation to groundwater quality. Organized and designed the inventory, and sampled 98 sites for vertebrates and invertebarates, obtained data on a variety of water quality parameters. Assisted in production of final publication (see below). February 1992 - October 1993.


  • Krejca, J.K. 2003. The Mexican Blindcat (Prietella phreatophila): Research and Exploration in the Groundwater. American Currents Vol. 29 No. 3, pp 5-11.(available as pdf file [1.1 mb])
  • Czaplewski, N. J., J. Krejca, and T. E. Miller. 2003. Late quaternary bats (Mammalia: Chiroptera) from Cebada Cave, Chiquibul Cave system, Belize. In Press. Caribbean Journal of Science, vol 39(1).
  • Trajano, E., N. Mugue, J. K. Krejca, C. Vidthayanon, D. Smart and R. Borowsky. 2002. Habitat, distribution, ecology and behavior of cave balitorids from Thailand (Teleostei: Cypriniformes). Ichthyological Exploration of Freshwaters 13(2):169-184. (available as pdf file [3.5 mb])
  • Hendrickson, D.A., J.K. Krejca and J.M.R. Martinez. 2001. Mexican Blindcats, genus Prietella (Siluriformes: Ictaluridae): an overview of recent explorations. Environmental Biology of Fishes 62: 315-337. (available as pdf file [840 kb])
  • Burr, B.M., G.L. Adams, J. Krejca, R.J. Paul and M.L. Warren, Jr. 2001. Cavernicolous sculpins of the Cottus carolinae Species Group in Perry County, Missouri: Distriburion, External Morphology, and Conservation Status Review. Environmental Biology of Fishes 62: 279-296.
  • Hendrickson, D.A. and J. K. Krejca. 2000. Cavefish and subterranean freshwater biodiversity in northeastern Mexico and Texas. In: Freshwater Ecoregions of North America: A Conservation Assessment, edited by R. A. Abell, D. M. Olson, E. Dinerstein, P. T. Hurley, J. T Diggs, W. Eichbaum, S. Walters, W. Wetengel, T. Allnutt, C. J. Loucks, and P. Hedao, Washington, D.C.: Island Press, p. 41-43.
  • Hofmann, J.E., J.E. Gardner, J.K. Krejca, and J.D. Garner. 1999. Summer records and a Maternity Roost of the Southeastern Myotis (Myotis austroriparius) in Illinois. Transactions of the Illinois State Academy of Science, Volume 92, 1 and 2, pp. 95-107.
  • Webb, D. W., L. M. Page, S. J. Taylor, and J. K. Krejca. 1998. The current status and habitats of the Illinois Cave Amphipod, Gammarus archerondytes Hubricht and Makin (Crustacea: Amphipoda). Journal of Cave and Karst Studies 60(3):172-178.
  • Feldhamer, G.A., J.O. Whittaker, J.K. Krejca and S.J. Taylor. 1995. Food of the Evening Bat (Nycticeius humeralis) and Red Bat (Lasiurus borealis) from Southern Illinois. Transactions of the Illinois State Academy of Science. Vol. 88:3 and 4, pp. 139-143.
  • Webb, D.W., S.J. Taylor, and J.K. Krejca. 1994. The Biological Resources of Illinois Caves and Other Subterranean Environments. Technical Report ILENR/RE-EH-94/06, Illinois Natural History Survey, Center for Biodiversity. ix + 157 pages.


  • Krejca, J. K. (presentor), D. A. Hendrickson, and S. J. Taylor. 1999. Using Prietella phreatophila (Ictaluridae) and other cave organisms to follow groundwater in Texas and Mexico. 31st Annual Meeting of the Desert Fishes Council (18 to 21 November, Ciudad Victoria, Tamaulipas, Mexico).
  • Hendrickson D.A., Krejca J.K. Notes on biogeography, ecology and behavior of Mexican blind catfish, genus Prietella (Ictaluridae). Journal of Caves & Karst Studies 59:166. National Speleological Society annual meeting, Sullivan, Missouri, August 1997.
  • Bats: dispelling myths. Herrin City Library, Herrin, Illinois, June 1995.
  • Taylor, S. J., J. K. Krejca, D. W. Webb, and J. E. Gardner. 1994. A biological inventory and water quality analysis of Illinois caves and other subterranean environments. Presented at the Missouri Academy of Science annual meeting cosponsered by the Missouri Speleological Survey. Cape Girardeau, MO. April 29-30, 1994.
  • Cavernicolous sculpins of the Cottus carolinae species group (Pisces: Cottidae) from Perry County, MO. Presented at the Missouri Academy of Science annual meeting cosponsered by the Missouri Speleological Survey. Cape Girardeau, MO. April 29-30, 1994.
  • Cavernicolous sculpins of the Cottus carolinae species group (Pisces: Cottidae) from Perry County, MO. National Speleological Society annual meeting, Pendleton, Oregon, August 1993.
  • Caves and Bats: fragile resources of the Cache River basin. Cache River Workshop, Carbondale, Illinois 1993.
  • The fauna of Illinois caves Mississippi Karst Tour, Waterloo, Illinois, April 1993.
  • Mistnetting and bat handling. University of Illinois, October 1992
  • Illinois caves and cave life. World of Science Lecture Series, Staerkel Planetarium, Champaign, Illinois, April 1992.

    União Paulista de Espeleologia. Summer 1995. Cave mapping in central Brazil karst.
    Proyecto Espeleológico Purificación. Winter 1995-present. Mapping and performing biological inventories in the area of Mexico's longest cave system.
    Coahuila, Nuevo Leon, & Tamaulipas, Mexico. March, August 1997; March, June, November 1998; March, July 1999 Biological studies of troglobitic Mexican blind cave catfish.
    Chiquibul, Belize. May 1998, May 1999. Cave mapping, cave passage dating (paleomagnetic clay, Uranium/Thorium speleothem), and biological collections in a large, remote cave system on the Belize/Guatamala border.

    See: Miller, T. April 2000. Chiquibul Cave. National Geographic Magazine. 197(4)54-71.
    Also see: National Geographic images on the web.
    Lechugilla Cave, New Mexico. September 1998 and October 1999. One week (each visit) doing restoration and survey work.
    Gunung Buda Project, Malaysia. January through March 2000. Assisted with a volunteer resource inventory for the Sarawak Forest Department in order to help them create a new national park. Cave surveys and biological inventories were performed.

    Vertical caving: Proficent at vertical techniques and rigging ropes, both European and American styles
    Cave diving: Fully cave certified by NSS-CDS (cave diving section)
    Cave survey: Proficient in any role on a survey team (tape, instruments, sketch)
    Cartography: Experienced cartographer, with many published cave maps
    CPR/First Aid certification: Current
    National Cave Rescue Commission: Participated in training seminars in Monroe County, Illinois (1993) and Perry County, Missouri (1994).

  • Illinois

    This page is maintained by Steve Taylor. Please email with comments and corrections. Created 5 May 1998, last modified 22 February 2006.