Human Impacts

Claudia Tyler

My research is in the field of plant ecology. I am interested in the role of disturbance, plant-animal interactions and other factors in structuring populations and communities, primarily in shrubland, grassland and oak woodland systems. My current research areas include controls on establishment of oaks (Quercus lobata, Q. douglasii, and Q. agrifolia), effects of cattle on oak savanna plant communities, and mechanisms affecting post-fire chaparral seedling establishment.

Dar Roberts

Dr. Dar Roberts is a Professor in the Department of Geography at the University of California, Santa Barbara, where he started in January 1994. He is the author of over 169 refereed publications, over 15 books/book chapters and over 100 abstracts and non-refereed articles. Research interests include imaging spectrometry, remote sensing of vegetation, spectroscopy (urban and natural cover), land-use/land-cover change mapping with satellite time series, height mapping with lidar, fire danger assessment and, recently remote sensing of methane.

Christopher Costello

I am a professor of Environmental and Resource Economics at the Bren School of Environmental Science & Management, UC Santa Barbara. My research concerns natural resource management and property rights under uncertainty, with a particular emphasis on information, its value, and its effect on management decisions.

Bruce Kendall

Bruce Kendall is a quantitative ecologist whose research in population dynamics involves modeling and analysis of abundance (the number of individuals in a plant or animal population) and demographic (birth and death rate) data. He applies the science of population ecology both to the conservation of rare species and the management of harvested populations.

Josh Schimel

My research sits at the interface of ecosystem and microbial ecology. I am interested in the role of soil microbes in controlling ecosystem scale processes. I am particularly interested in the linkages between plant and soil processes, and how changes in microbial community structure affects ecosystem-scale dynamics. My work is now focusing on three ecosystems: the Arctic tundra in Alaska, the taiga forest of Alaska, and the California annual grassland-oak savanna.

Jordan Clark

Research interests lie in the general field of aqueous geochemistry and center on: 1) the transport of water and dissolved material in groundwater, surface waters, and the coastal ocean; 2) how flow patterns affect water quality; 3) gas exchange across the air-water interface; 4) climate change during the last 30,000 years. These questions are examined using experiments conducted by introducing chemical tracers into the water bodies, plus analysis of flow patterns, residence times, and mixing rates inferred from the distribution of natural and anthropogenic tracers. 

Craig Carlson

Microbial Oceanography is an interdisciplinary blend of marine microbiology and ocean biogeochemistry. Specifically, our research has focused on the role marine microbes play in the cycling of elements through oceanic dissolved organic matter (DOM) and the biogeochemical significance of DOM in the marine C cycle. Despite significant progress the oceanographic community still lacks a mechanistic understanding of the microbial processes that shape DOM dynamics. My groups’ research goals are to continue to break apart the “black boxes” of substrates and organisms.

Michael Singer

My research focuses on hydrology and sediment transport processes, particularly in large river basins, in order to understand how the hydrologic cycle is modified by climatic changes and humans, and how such alterations affect sediment mobilization from terrestrial environments, sequestration and biogeochemical transformation within floodplains and deltas, and ultimately delivery to oceans.


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