A downward trend in total streamflow for many rivers in north-central and
northwest Oklahoma has been identified despite an overall upward trend in
precipitation over the last several decades. This downward trend mirrored
notable declines of fisheries. Streamflow trends are primarily driven by
precipitation trends and the divergence between the two suggests an
increasing role of land surface change, which includes woody plant
encroachment, land use change and alluvial aquifer withdrawal affecting
streamflows. The relative contribution of these components for long-term
streamflow trends for many of the river basins in Oklahoma remains largely
unknown.

We are looking for a highly motivated MS student to work on a collaborative
research project between Oklahoma State University and the USGS Oklahoma
Water Science Center. The project aims to assess the effects of climate,
land surface change and human activities on long-term streamflow
characteristics and aquatic ecosystem of the upper Cimarron River.
Coursework or work experience involving GIS, watershed or stream hydrology,
fish and wildlife or ecosystem science is highly desirable. Experience in
the assessment of historic land use and land cover change using GIS tools
and historic aerial photos is a plus.
 
A graduate assistantship is available at $15,500 annually. Benefits include
tuition waiver and health insurance. Additional supplements may be available
for the first year. The expected starting date is August 2012.  For more
information about this position, please contact Dr. Chris Zou
(chris....@okstate.edu) at Department of Natural Resource Ecology and
Management at Oklahoma State University.

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