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My research interests lie at the interface of population, community, and ecosystem ecology. I am particularly interested in how within-species trait variation affects communities and ecosystems. To address these questions, I use a model system consisting of toxic algae (i.e., cyanobacteria) and a keystone herbivore (i.e., the microcrustacean Daphnia) that adapts to the presence of toxic cyanobacteria in its environment. As an experimental ecologist, my approach relies heavily on field-based studies. Through funding from the EPA STAR Graduate Research Fellowship Program, I have focused on biotic and abiotic factors controlling cyanobacterial blooms in aquaculture and drinking water facilities.  



Local adaptation by Daphnia and the response of lakes to eutrophication.


Stoichiometry and  cyanobacterial community structure across a productivity gradient.


Ecological control of off-flavor compounds and cyanotoxins in drinking water and fish farms.






Water quality, cyanobacterial toxins,  and animal health.


Lethal vs non-lethal effects of predators across ecological gradients.