Bruce Stephen

Bruce Stephen

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Degree PhD in NRES (Applied Ecology)
Address 13 Hardin Hall
3310 Holdrege Street
Lincoln NE
68583-0980
E-mail bstephen@mac.com
Advisor(s) Patricia (Trish) Freeman
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Selected Publications

Beck (Zysset), A., Stephen, B., Kill, R., Smeenk, N., Allen, C., Pope, K. L. (2014). Toxicity of copper sulfate and rotenone to Chinese mystery snail (Bellamya chinensis). Management of Biological Invasions, 5, 371-375. Online
Haak, D., Chaine, N., Stephen, B., Wong, A., Allen, C. (2013). Mortality estimate of Chinese mystery snail (Bellamya chinensis) in a Nebraska reservoir. BioInvasion Records, 2. Online
Stephen, B.J., N.M. Chaine, C.R. Allen, K.A. Fricke, D.M. Haak, M.L. Hellman, R.A. Kill, K.T. Nemec, K.L. Pope, N.A. Smeenk, D.R. Uden, K.M. Unstad, A.E. VanderHam and A. Wong. 2013. Fecundity of the Chinese mystery snail in a Nebraska Reservoir. Journal of Freshwater Ecology 28:439-444. Online
Unstad, K.M., D.R. Uden, C.R. Allen, N.M. Chaine, D.M. Haak, D.M., R.A. Kill, K.L. Pope, B.J. Stephen and A. Wong. 2013. Survival and behavior of Chinese mystery snails (Bellamya chinensis) in response to simulation water body drawdowns and air exposure. Management of Biological Invasions 4:123-127. Online
Wong, A., C.R. Allen, N.M. Hart, D.M. Haak, K.L. Pope, N.A. Smeenk, B.J. Stephen and D.R. Uden. 2013. Enamel-based mark performance for marking Chinese mystery snail Bellamya chinensis. Management of Biological Invasions 4:231-234. Online
Chaine, N., Allen, C., Fricke, K., Haak, D., Hellman, M., Kill, R., Nemec, K., Pope, K. L., Smeenk, N., Stephen, B., Uden, D., Unstad, K., VanderHam, A. (2012). Population estimate of Chinese mystery snail (Bellamya chinensis) in a Nebraska reservoir. BioInvasion Records, 1, 283-287. Online
Chaine, N.M., C.R. Allen, K.A. Fricke, D.M. Haak, M.L. Hellman, R.A. Kill, K.T. Nemec, K.L. Pope, N.A. Smeenk, B.J. Stephen, D.R. Uden, K.M. Unstad and A.E. Vanderham. 2012. Population estimate of Chinese mystery snail (Bellamya chinensis) in a Nebraska reservoir. BioInvasion Records 1:283-287. Online
Nemec, K.T., Allen, C.R., Alai A., Clements, G., Kessler A.C., Kinsell T., Major, A., and B.J. Stephen. 2011. Woody invasions of urban trails and the changing face of urban forests in the Great Plains, U.S.A. American Midland Naturalist 165:241-256. Online

 

Selected Presentations

The freshwater gastropods of Nebraska and South Dakota: A review of historical records, current geographic distribution, and conservation status.
  • Presentation Type: Dissertation Defense
  • Date: 10/11/2018
  • Abstract:

    This is an investigation of the historical and current distribution of freshwater snails of Nebraska and South Dakota. This study ranges from historical surveys conducted in the late 1800's to the early 1900's, to recent survey results from over 260 water bodies throughout eight EPA Level III ecoregions. Species composition is compared among regions. Some species were observed in many water bodies across both states while other were comparatively rare: Common species include the left-handed pondsnail, Physa gyrina, and the large planorbid Helisoma trivolvis, while rare species include the freshwater limpet, Ferrissia rivularis, and the Prairie Lymneid, Lymnaea bulimoides. Reasons for their distribution is explored and I assign a conservation status to each species based on incidence, historical presence, and geographic distribution. Three species are imperiled, one species is critically imperiled, and at least seven species, observed only in historic studies, may be extirpated.

Educational Background

  • BS - State Univer. Of NY college at Cortland, Biology (1991)
  • BS - UNL, General Studies ()
  • MS - Univer of Massachuestts Dartmouth, Biology (2994)

Currently this page only displays grants that were awarded on 1/1/2009 to the present. If a grant was awarded prior to 1/1/2009 and is still active, it will not be displayed on this page.

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