GLOBAL CHANGE ECOLOGY​

I am interested in feedbacks between global changes and terrestrial ecosystems. My research to date focuses on the effects of air pollution, elevated CO2, increased temperature, and changing precipitation regimes on natural and agricultural ecosystems. 

Effects of N and P on phosphatase activity in the rhizosphere and bulk soil (meta-analysis). 
Collaborators: B.Z. Houlton

Effects of CO2, N and P on plant stoichiometry and allometry. 
Collaborators: W. Huang, B.Z. Houlton, J. Liu, G. Zhou

CLIMATE & CALIFORNIA AGRICULTURE

​I also am modeling the effects of drought on carbon storage and crop yields throughout California, via microbial, chemical, and physical mechanisms.

​Collaborators: Robert Grant, Symon Mezbahuddin, Zelalem Mekonnen, DroCAM Collective

Climate change Agriculture Project
Collaborators: J. Abatzoglou, E. Elias, P. Nico, S. Ostoja, K. Steenwerth

DroCAM Collective: Samantha Ying, Bill Riley, Eoin Brodie, Peter Nico, Margaret Torn, Kate Scow, Sanjai Parikh, Teamrat Ghezzehei, Asmaret Asefaw Berhe, Eric Dubinsky, Nate Bogie, Michael Schaefer, Macon Abernathy, Claudia Avila, Daniel Rath

​CROP NUTRITION

Ongoing research is addressing the effects of climate change on the mineral nutrition and yields of specialty crops in California. This research combines data synthesis, ecosystem modeling, and empirical research.

Collaborators: Samantha Ying, Bill Riley, Eoin Brodie, Peter Nico, Margaret Torn, Kate Scow, Sanjai Parikh, Teamrat Ghezzehei, Asmaret Asefaw Berhe, Eric Dubinsky, Nate Bogie, Michael Schaefer, Macon Abernathy, Claudia Avila, Daniel Rath,  J. Abatzoglou, K. Steenwerth, E. Elias, S. Ostoja
​

TROPICAL BIOGEOCHEMISTRY​

Interactions between arbuscular mycorrhizal fungi and symbiotic nitrogen fixation in costa rica
Collaborators: M. Nasto, C. Cleveland, B. Sullivan

Revisiting nutrient limitation in the tropics
Collaborators: C.C. Cleveland*, A. Townsend*, S. Alvarez-Clare, M. Bustamante, G. Chuyongs, P. Grierson, K. Harms, B. Houlton, W. Parton, S. Porder, S. Reed, C. Sierra, W. Silver, P. Taylor, E. Tanner, W. Wieder

Soil Phosphorus Bioavailability
Collaborators: C. Cleveland, N. Fierer, A. Shaw

GLOBAL ECOLOGY
​AND MODELING

Benchmarking the N cycle of CLM to improve climate change forecasts
Collaborators: B.Z. Houlton, E. Bai. 

Redfield ratios on land: stoichiometry of net remineralization in forests
Collaborators: J.B. Winbourne, S.K. Enders, D.J.X. Gonzalez, T.L. van Huysen, J.E. Izquierdo, D.R. Light, D. Liptzin, K.E. Miller, S.L. Morford, R.A. Norton, B.Z. Houlton

New vs. recycled production based on sources of nitrogen and phosphorus
Collaborators: C. Cleveland*, B.Z. Houlton, W.K. Smith, S.C. Reed, W. Parton, S. Del Grosso, S.W. Running

​OTHER PROJECTS

​Foods vs. Biofuels
We analyzed the use of land and resources for food and biofuel production to determine the viability of biofuels as an alternative 'green' fuel source.
Collaborators: D. Pimentel*, M. Toth, M. Karpoff, G. Paul, R McCormack, J. Kyriazis, T. Krueger 

Macaque Genome Project
My first research experience! I compared genes in the human, macaque, and chimpanzee genomes for positive selection. 
Collaborators: Macaque Genome Sequencing and Analysis Consortium (led by R. Gibbs)