Janet C. Steven

(434) 381-6365

2003-2005  Postdoctoral Researcher, Indiana University
Ph.D. 2003 University of Wisconsin, Madison (Botany)
B.S. 1996 Davidson College (Biology)

Courses I teach
Introduction to Organisms, Introduction to Cells, Introductory Laboratory Techniques, Y:1 Economic Botany (First Year Seminar), Plants and Human Affairs, Laboratory in Plants and Human Affairs, The Plant Kingdom, Plant Ecophysiology, Ecology, Evolution


My research focuses on the causes and constraints of natural selection. I am interested in how genetic correlations both shape and are shaped by selection. I am currently also exploring whether exploding deer populations are changing selection regimes on the wildflowers they eat. In my classes, I emphasize engagement with primary research at all levels, and I like to explore new technology that helps students achieve learning goals.


Nichols, Mary, Janet Steven, Paul Dille, Randall Sargent, and Joshua Shapiro. in press. Time-lapse very high resolution photography in rangeland ecosystems research. Applications in Plant Sciences.

Steven, Janet C. and James R. Kirkwood. 2013. “Predicting population growth: modeling with projection matrices,” in Mathematical Methods and Concepts in Modern Biology, R. Robeva and T. Hodge, eds. Elsevier.

Delph, Lynda F., Jonathan Andicoechea, Janet C. Steven, Christopher R. Herlihy, Samuel V. Scarpino, Daniela L. Bell. 2011. Environment-dependent intralocus sexual conflict in a dioecious plant. New Phytologist 192:542-552.

Delph, Lynda F., Janet C. Steven, Ingrid A. Anderson, Christopher R. Herlihy, and Edmund D. Brodie III. 2011. Elimination of a genetic correlation between the sexes via artificial correlational selection. Evolution 65:2872-2880.

Penny, Rebecca H. (SBC '08) and Janet C. Steven. 2009. Sexual dimorphism in pollen grain size in cryptically dioecious Thalictrum macrostylum. Plant Systematics and Evolution 279:11-19.

Steven, Janet C., Lynda F. Delph and Edmund D. Brodie III. 2007. Sexual dimorphism in the quatitative-genetic architecture of floral, leaf, and allocation traits in Silene latifolia. Evolution 61: 42-57.

Steven, Janet C. and Donald M. Waller. 2007. Local isolation affects reproductive success in low-density but not high-density populations of two wind-pollinated Thalictrum species. Plant Ecology 190: 131-141.

Delph, Lynda F., Frank M. Frey, Janet C. Steven and Janet L. Gehring. 2004. Investigating the independent evolution of the size of floral organs via G-matrix estimation and artificial selection. Evolution and Development 6:438-448.

Steven, Janet C. and Donald M. Waller. 2004. Reproductive alternatives to insect pollination in four species of Thalictrum (Ranunculaceae). Plant Species Biology 19:73-80.

Steven, Janet C., Thomas P. Rooney, Owen D. Boyle, and Donald M. Waller. 2003. Density-dependent pollinator visitation and self-incompatibility in upper Great Lakes populations of Trillium grandiflorum. Journal of the Torrey Botanical Society 130:23-29.

Steven, Janet C., Patricia A. Peroni, and Ellen Rowell. 1999. The effects of pollen addition on fruit set and sex expression in the andromonoecious herb horsenettle (Solanum carolinense). American Midland Naturalist 141:247-252.

Recent presentations (* = student)

2012.  Steven, Janet C., Holly R. Prendeville, and Laura F. Galloway. July 2012. Variation in the intensity of herbivory by deer and its impact on fecundity across a latitudinal gradient in Campanulastrum americanum, a monocarpic herb. Botany meetings, Columbus, Ohio.

2008.  Delph, Lynda F., Janet C. Steven, and Edmund D. Brodie III. June 2008. Breaking a strong genetic correlation for a sexually dimorphic trait: why was it possible? Evolution meetings, Minneapolis, Minnesota.

2008. Pham, N.*, Robinson, A.*, Macone, M.*, Ruffle, L.*, Johnson, J.*, Capano, A., Fink, L.S. & Steven, J.C.  Long term ecological research on forest composition.  MARCUS (Mid-Atlantic Regional Conference on Undergraduate Scholarship), Sweet Briar College.

2007. Steven, Janet C. and Rebecca H. Penny*. Sexual dimorphism in pollen grain size and flower number varies among populations in a cryptically dioecious plant, Thalictrum macrostylum (Ranunculaceae). Joint Congress of the Botanical Society of America and the American Society of Plant Biologists, Chicago, IL.

2005. Steven, Janet C., Lynda F. Delph and Edmund D. Brodie. Genetic integration of traits constrains leaf physiology in males more than in females of Silene latifolia. Society for the Study of Evolution meetings, Fairbanks, Alaska.

2004. Steven, Janet C., Lynda F. Delph and Frank M. Frey. Independent evolution of floral parts: Evidence from G matrix estimation and artificial selection. Society for the Study of Evolution meetings, Fort Collins, Colorado.

2002. Steven, Janet C. and Donald M. Waller. Resource allocation to sex function in wind- and insect-pollinated species of Thalictrum (Ranunculaceae). Botanical Society of America meetings, Madison, Wisconsin.

2001. Steven, Janet C. and Donald M. Waller. Plant density and reproductive success in two wind pollinated species of Thalictrum (Ranunculaceae). Ecological Society of America meetings, Madison, Wisconsin.