About Me


My research explores hydrologic, nutrient (N and P), and carbon cycles in a range of scales, from hillslope to continental, in the past, present, and future. Specifically, my work focuses on how human activities (e.g., land use change, climate change, resource extraction, and recreation) alter biogeochemical cycles, which, when scaled up, potentially alter ecosystem processes across the Critical Zone (i.e., the crust of the Earth).

My study areas range across terrestrial, aquatic, and Arctic permafrost ecosystems around the world, so my research has taken me to the semiarid rivers and reservoirs of the Mountain West and southern California, to the forests of the Pacific Northwest, New England, and Southern Appalachia, and to the permafrost and glaciers of Arctic Alaska and Indian Himalaya. For these areas, I combine direct in situ measurements with computer simulation modeling in High Performance Computing environments to better understand ecosystem function. This understanding aids in developing predictive models that reveal the potential resistance and resilience of ecosystems to human perturbations.

 
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University of Wisconsin–Superior

Washington College

Brigham Young University

Pacific Northwest National Laboratory

Coweeta Hydrologic Laboratory

Virginia Polytechnic Institute and State University

Hubbard Brook Experimental Forest

San Diego State University

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