Professor - Ph.D., University of Arizona
Director, Reis Biological StationContact Information:
Phone: (314) 977-4090
Fax: (314) 977-3658
Mail: Department of Biology, St. Louis University, 3507 Laclede Ave. St. Louis, MO 63103-2010
Courses Offered: Conservation Biology, Biology of Birds, Biology of Mammals, Advanced Ecology
Research Interests:While my research interests are diverse, they can be divided into two broad categories: (i) arid ecosystem ecology and conservation and (ii) the behavioral ecology of information use. Much of my work in arid ecosystems has examined desertification and factors that affect the biodiversity. I am particularly interested in livestock effects on soil chemical and physical processes that then affect plant and animal populations. My examination of behavior is frequently centered on understanding how animals perceive their environment. Much of my behavioral work examines information use in social animals who differ from solitary individuals in that they can acquire public information to estimate the quality of resources by noting the activities of other individuals.
Research opportunities: I seek dedicated students interested in 1) desertification and plant ecology, or 2) public information use in animals. Please see my papers below and contact me (Valone@slu.edu ) for further information.
Allington, G.R.H., D. Koons, S.K.M. Ernest, M. Schutzenhofer, and T.J. Valone. In press. Niche opportunities and invasion dynamics in a desert annual community. Ecology Letters
Allington, G.R.H. and T.J. Valone. 2011. Long-term livestock exclusion in an arid grassland: vegetation and soil changes. Rangeland Ecology & Management 64: 424-428.
Allington, G.R.H. and T.J. Valone. 2010. Reversal of desertification: the role of physical and chemical soil properties. Journal of Arid Environments. 74: 973-977.
Schutzenhofer, M.R., T.J. Valone and T.M. Knight. 2009. Herbivory and population dynamics of invasive and native Lespedeza. Oecologia 161:57-66.
Hromada, M., Antczak, M. Valone, T.J. and Tryjanowski, P. 2008. Settling decisions and heterospecific social information use in shrikes. PloS One vol 3:e3930.
Valone, T.J. 2008. Effects of long-term livestock removal on water infiltration rate in arid grasslands, pages 81-91, In: Grasslands: Ecology, Management and Restoration, Schröder (Ed). Nova Science Publishers. New York. 270 pages.
Valone, T.J. and N.A. Barber. 2008. An empirical evaluation of the insurance hypothesis in diversity-stability models. Ecology 89:522-531.
Valone, T.J. 2007. From eavesdropping on performance to copying the behaviors of others: a review of public information use. Behavioral Ecology and Sociobiology 62:1-14.
Castellano, M. and T.J. Valone. 2007. Effect of livestock removal on water infiltration rate: implications for desertification models. Journal of Arid Environments 71:97-108.
Valone, T.J. and M.R.Schutzenhofer. 2007. Reduced rodent biodiversity destabilizes plant populations. Ecology 88:26-31.
Schutzenhofer, M.R. and T.J. Valone. 2006. Positive and negative effects of Erodium cicutarium on an arid ecosystem. Biological Conservation 132:376-381.
Castellano, M. and T.J. Valone. 2006. Effects of livestock removal and perennial grass recovery on the lizards of a desertified arid grassland. Journal of Arid Environments 66:87-95.
Valone, T.J. 2006. Are animals capable of Bayesian updating? An empirical review. Oikos 112: 252-256.
Danchin, E., L.-A. Giraldeau, T.J. Valone, and R.H. Wagner. 2004. Public information: from Nosy neighbors to cultural evolution. Science 305: 487-491.