Penn State Science
Ottar N. Bjornstad

Ottar N. Bjornstad

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Professor of entomology and biology

501 ASI
University Park, PA 16801
Phone: (814) 863-2983
Lab Address: 515 ASI
Lab Phone: (814) 863-1815


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

Postdoc Training:

  1. University California, Santa Barbara, 1998-2000
  2. Norwegian Science Foundation, 1997-1998

Research Interests:

Ecology, Infectious Disease Dynamics, and Theoretical and Computational Biology

I am a theoretical ecologist working as a professor in the Departments of 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 professor in the Department of Statistics, and carry out research in statistical ecology and in methods for analyzing spatiotemporal data.


Selected Publications:

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

Lavine, J., A. A. King, and O. N. Bjørnstad. 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.

Ferrari, M. J., R. F. Grais, A. J. K. Conlan, N. Bharti, O. N. Bjørnstad, L. J. Wolfson, P. J. Guerin, A. Djibo, and B. T. Grenfell. 2008. Seasonality, stochasticity and the dynamics of measles in sub-Saharan Africa. Nature 451: 679-684.

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

Viboud, C., O. N. Bjørnstad, D. L. Smith, L. Simonsen, M. A. Miller, and B. T. Grenfell. 2006. Synchrony, waves and spatial hierarchies in the spread of influenza. Science 312: 447-451.

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

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

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

Grenfell, B. T., O. N. Bjørnstad, and J. Kappey. 2001. Travelling waves and spatial hierarchies in measles epidemics. Nature 414: 716-723.


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