University Distinguished Professor, Dept. Ecology & Evolutionary Biology University of Arizona
Editor in Chief, The American Naturalist
Ph.D., M.Sc., Ecology & Evolutionary Biology, University of Michigan
A.B. Brown University
Using a combination of field observations and experiments, I investigate how population processes, abiotic conditions and community context determine net effects of the interactions for the fitness of each participant species. Specific conceptual areas of interest include: (1) conflicts of interest between mutualists and their consequences for the maintenance of beneficial outcomes in these interactions and (2) context-dependent outcomes in both mutualisms and antagonisms. I am also collaborating on theoretical and empirical investigation of (i) the fragility of mutualisms in light of conservation threats and mechanisms of restoring disrupted interactions and (ii) the causes and consequences of “cheating” within mutualism.