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Ottar Bjornstad, Ph.D.

  • Distinguished Professor of Entomology and Biology
  • J. Lloyd & Dorothy Foehr Huck Chair of Epidemiology
Ottar Bjornstad, Ph.D.
515 ASI Building
University Park, PA 16802
Email:
Work Phone: 814-863-2983

Education

  1. B.A. Biology, University of Oslo, Norway 1991
  2. M.S. Zoology, University of Oslo, 1993
  3. Ph.D. Ecology, University of Oslo, 1997

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:

My main interests are population ecology and population dynamics with particular emphasis on mathematical and computational aspects. I am also an adjunct professor in statistics and carry out research in statistical ecology and in methods for analyzing spatiotemporal data. 

Selected Publications:

For a complete listing use google.scholar.com

Bjornstad, O.N. 2015. Nonlinearity and chaos in ecological dynamics revisited. Proceedings of the National Academy of Science USA 112(20): 6252–6253

Greischar, M.A., Read, A.F. and Bjørnstad, O.N. 2014. Synchrony in malaria infections: How intensifying within-host competition can be adaptive.  American Naturalist 183: E36–E49.

Nelson, W.A., Bjornstad, O.N. and Yamanaka, T. 2013. Recurrent insect outbreaks caused by temperature-driven changes in system stability.  Science 341: 796-799.

Yamanaka, T., Nelson, W.A., Uchimura, K. and Bjørnstad, O.N. 2012. Generation separation in simple structured life-cycles: models and 48 years of field data on a tea tortrix moth. American Naturalist 179: 95-109.

Metcalf, C.J.E., Graham, A.L., Huijben, S., Barclay, V.C., Long, G.H.,  Grenfell, B.T., Read, A.F. and Bjørnstad, O.N. 2011. Partitioning regulatory mechanisms of within-host malaria dynamics using the effective propagation number. Science 333: 984-988.

Lavine, J., King, A.A. and Bjornstad, O.N. 2011. Natural immune boosting in pertussis dynamics and the potential for long-term vaccine failure. Proceedings of the National Academy of Science USA 108: 7259-7264.

Bjørnstad, O.N., Robinet, C. and Liebhold, A.M. 2010. Geographic variation in north american gypsy moth cycles: subharmonics, generalist predators and spatial coupling. Ecology 91:106-118.

Johnson, D.M., Liebhold, A.M., Tobin, P.C and Bjørnstad, O.N. 2006. Allee effects and pulsed invasion by the gypsy moth. Nature 444: 361-363.

Bjørnstad, O.N., Peltonen, M., Liebhold, A.M. & Baltensweiler, W. 2002. Waves of larch budmoth outbreaks in the European alps. Science 298: 1020-1023.

Bjørnstad, O.N. & Grenfell, B.T. 2001. Noisy clockwork: time series analysis of population fluctuations in animals. Science 293: 638-643.

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.

Research Interests

Ecological Applications

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

Disease Biology and Ecology

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