Ottar Bjornstad, Ph.D.

Department Focus Areas:

Disease Ecology and Biology
Ecological Applications

Research Interests:

Population ecology and population dynamics with particular emphasis on mathematical and computational aspects

Research Activities & Interests:

I am an theoretical ecologist working as an assistant professor in Entomology and Biology. My main interests are population ecology and population dynamics with particular emphasis on mathematical and computational aspects. I am also an adjunct assistant professor in statistics and carry out research in statistical ecology and in methods for analyzing spatiotemporal data. My current focus is on understanding a number of general ecological questions.

Selected Publications:

For a complete listing see: http://asi23.ent.psu.edu/

Bjørnstad, O.N., Sait, S.M., Stenseth, N.C., Thompson, D.J. & Begon, M. 2001. Coupling and the impact of specialised enemies on the dimensionality of prey dynamics. Nature 401: 1001-1006.

Bjørnstad, O.N. 2000. Cycles and synchrony: two historical 'experiments' and one experience. Journal of Animal Ecology 69: 869-873.

Bjørnstad, O.N. and Bolker, B. 2000. Canonical functions for dispersal-induced synchrony. Proceedings of Royal Society London B 267: 1787-1794.

Bjørnstad, O. N., Ims, R. A. and Lambin, X. 1999. Spatial population dynamics: Causes and consequences of spatial synchrony in density fluctuations. Trends in Ecology and Evolution 14:427-431.

Bjørnstad, O. N., Fromentin, J.-M., Stenseth, N. C. and Gjøsæter, J. 1999. Cycles and trends in cod population. Proceedings of the National Academy of Science USA 96:5066-5071.

Bjørnstad, O.N., Stenseth, N. C. and Saitoh,T. 1999. Synchrony and scaling in dynamics of voles and mice in northern Japan. Ecology 80:622-637.

Bjørnstad, O.N., Begon, M., Stenseth, N. C., Falck, W., Sait, S. M. and Thompson, D. J. 1998a. Population dynamics of the Indian meal moth: demographic stochasticity and delayed regulatory mechanisms. Journal of Animal Ecology 67:110-126.

Costa, S., M. Barbercheck, & G.G. Kennedy . 2001. Mortality of Colorado potato beetle (Leptinotarsa decemlineata) after sub-lethal stress with Bacillus thuringiensis and subsequent exposure to Beauveria bassiana. J. Invertebr. Pathol. 77: 173-179.

Wyer, M.B., M. E. Barbercheck, D. Cookmeyer, H. Ozturk, M. Wayne. 2001. Women in Science and Technology. Routledge, NY. 376 pp.

Costa, S., M. Barbercheck, & G.G. Kennedy . 2000. Sublethal acute and chronic exposure of Colorado Potato Beetle (Coleoptera: Chrysomelidae) to the d- endotoxin of Bacillus thuringiensis . J. Econ. Entomol. 93: 680-689.