A graduate research assistantship is available for a highly talented and motivated Ph.D. student to conduct modeling studies of peatland responses to climate change as part of the NSF-funded Alaska Peatland Experiment (APEX; see < http://apex.msu.edu/>http://apex.msu.edu/), which has manipulated water table and temperature in a rich fen located near Fairbanks, Alaska. APEX is associated with the Bonanza Creek Long Term Ecological Research Program (see http://www.lter.uaf.edu/). The modeling studies to be conducted will make use of data that is being collected by APEX and will involve the integration of existing models of vegetation dynamics, peatland biogeochemistry, and peatland hydrology.  The assistantship can begin as early as summer 2008.  Students interested in combining research interests in environmental modeling with interests in ecosystem ecology, vegetation dynamics, soil dynamics, or hydrology are strongly encouraged to apply.  For additional information contact Dr. A. David McGuire (Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK  99775; email: ffadm@uaf.edu, telephone: 907-474-6242).