There is an opening for a postdoctoral fellow at the University of
Nebraska in population biology with a starting date of January 2008.
I am interested in hosting a postdoc working either of the following
topics.
1. Oak masting
a. California. Walt Koenig and I have collected a dataset of acorn
production of more than 1000 individual trees for 9 species at 20 sites
ranging from San Diego to Redding collected from 1994 on.
b. Minnesota. At Cedar Creek NHA, we have collected a dataset of
individual acorn production of bur and pin oak evenly distributed in
savanna/oak forest burned at different intervals from 1995 on.
Check the following papers for ways that this data can be used:
Knops, J.M.H., W.D. Koenig & W. Carmen. 2007. A negative correlation
between growth and reproduction does not imply a tradeoff between growth
and reproduction in California oaks. Proceedings of the National Academy
of Sciences 104: in press.
Koenig, W.D. & J.M.H. Knops. 2001. Seed-crop size and eruptions of
North American boreal seed-eating birds. Journal of Animal Ecology 70: 609-
620.
Koenig, W.D. & J.M.H. Knops. 1999. Patterns of annual seed
production by Northern Hemisphere trees: A global perspective. American
Naturalist 155: 59-69.
2. Old field succession at Cedar Creek NHA in Minnesota
As part of the Cedar Creek LTER, we have a dataset of plant cover
estimates of 2100 permanent plots sampled six times since 1983, for plant
cover, soil C and N, and annually at the field level for insect abundances.
Knops, J.M.H. 2006. Fire does not alter vegetation in infertile
prairie. Oecologia 150: 477-483.
Grace, J. B., T. M. Anderson, M. D. Smith, E. Seabloom, S. J.
Andelman, G. Meche, E. Weiher, L. K. Allain, H. Jutila, M. Sankaran, J.
Knops, M. Ritchie & M. R. Willig. 2007. Does species diversity limit
productivity in natural grassland communities? Ecology Letters 10: 680-
689.
Haddad, N.M., D. Tilman & J.M.H. Knops. 2001. Long-term oscillations
in grassland productivity induced by drought. Ecology Letters 5: 110-120.
Knops, J.M.H. & D. Tilman. 2000. Dynamics of soil nitrogen and
carbon accumulation for 61 years after agricultural abandonment. Ecology,
81: 88-98.
Haddad, N.M., D. Tilman, J. Haarstad, M. Ritchie & J.M.H. Knops.
2001. Contrasting effects of plant diversity and composition on insect
communities: a field experiment. American Naturalist 158: 17-35.
Please contact me ASAP if you have an interest.
Johannes (Jean) Knops
School of Biological Sciences
University of Nebraska
348 Manter Hall
Lincoln, NE 68588
phone (402) 310-3904
[EMAIL PROTECTED]
