Robert Johnson, PhD
I am an aquatic ecologist broadly interested in understanding how food web interactions drive ecosystem function. We live in a dynamic world, where changing climatic and local environmental conditions can affect species populations and distributions (thereby affecting food web interactions), which in turn affect ecosystem functions. My research spans both marine and freshwater ecosystems with a focus on carbon dynamics. I use a combination of comparative studies and manipulative experiments to understand how metabolism/decomposition and physical processes affect carbon fluxes and storage in aquatic ecosystems and the roles that animals play in regulating these processes.
Currently, I am a postdoctoral researcher in the Department of Ecology, Evolution, and Organismal Biology at Iowa State University. I recently earned my PhD from the University of Florida in the Archie Carr Center for Sea Turtle Research and Department of Biology. During my dissertation I studied the effects of green turtle grazing on carbon dynamics and community composition within Caribbean seagrass meadows.
Prior to my PhD, I worked in the Aquatic Ecosystem Ecology lab in the Department of Environment Sciences at the University of Virginia where we studied carbon dynamics, energy flow, and ecosystem regime shifts in lakes. As an undergraduate at the University of Wisconsin-Madison, I worked in the River Ecology Lab in the Center for Limnology studying nutrient cycling in streams.
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