Human Impacts

Christina (Naomi) Tague

Naomi Tague's research is focused on the interactions between hydrology and ecosystem processes and, specifically, how eco-hydrologic systems are altered by changes in land use and climate. Much of her work involves developing and using spatial simulation models to integrate data from multiple field-based monitoring studies in order to generalize results to larger watersheds. Reflecting that emphasis, she is one of the principal developers of the Regional Hydro-Ecologic Simulation System (RHESSys), an integrated model of spatially distributed carbon, water, and nitrogen cycling.

Roland Geyer

Born and educated in Germany, where he was trained in engineering and physics, Roland Geyer came to the Bren School in 2003 and now teaches courses in production and operations management, and in the emerging field of industrial ecology. Geyer is interested in the life cycle of manufactured goods—the processes in the form of energy and material flows that are related to transforming raw materials into products and, ultimately, waste—and in the environmental and economic potential of reuse and recycling activities.

Dylan Rood

My research focuses on the use of several cosmogenic isotopes, including 10Be, 26AI and 36CI as geochemical/geophysical tracers and dating tools. I utilize cosmogenic nuclides to investigate terrestrial climate records, earthquake fault slip rates, erosion rates and landscape evolution, seismic hazard and earthquake ground motions, Earth surface processes, atmospheric circulation, hydrology, burial dating and archeology, and calibration of cosmogenic nuclide production rates.

Roger Nisbet

My research covers many areas of theoretical ecology. The overarching theme is the use of “individual-based” or “structured” population models to relate population dynamics to the physiology and behavior of individual members of a population. Much work is based on Dynamic Energy Budget (DEB) theory to describe the rates at which individual organisms assimilate and utilize energy and elemental matter. My research group both develops new fundamental theory and applies it to environmental problems.

Simone Pulver

My research focuses broadly on the engagement of non-state actors, i.e. firms, non-governmental organizations and scientific experts, in climate change politics at international and national levels and in industrialized and developing-country settings. My first research project focused on the roles played by transnational oil corporations and transnational environmental advocacy NGOs in the UN climate negotiations.
Current Projects:

Carla D'Antonio

My research lies at the interface of plant community and ecosystem ecology. The goals of my research program are, to understand controls over variation in plant community change across landscapes and how the invasion of species affects ecosystem composition, structure and functioning. Specific foci include processes that control invasions by non-indigenous plant species and mechanisms through which plants affect ecosystem functioning over short versus long time scales.

Samuel Sweet

Distributional ecology and systematics of western North American and Australian amphibians and reptiles; ecology and systematics of monitor lizards; mechanics of intergrade zones and of speciational processes; crypsis; functional and evolutionary morphology; ethnozoology; conservation biology.

Erica Fleishman

Erica Fleishman (B.S., M.S. Stanford University, Ph.D. University of Nevada, Reno) is a researcher at the John Muir Institute of the Environment, University of California, Davis. She focuses on application of conservation science to management of public and private lands in the western United States with work such as explaining and projecting the responses of animals to changes in land cover, land use, and climate.

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