Postdoctoral and Professional Researchers

Postdoctoral and Professional Researchers

Dr. Adam Amir


I am a filmmaker with an interdisciplinary background including philosophy, political ecology, science communication, and feminist methodologies. For my research I use collaborative methods, particularly "Folk Filmmaking", a form of participatory video production that helps local communities express their environmental values and concerns through storytelling. My work focuses on cross-cultural, moral debates over environmental issues and explores how collaborative filmmaking can help foster contextual, respectful adjudication. I conducted Folk Filmmaking projects in Nigeria, Cameroon, Kyrgyzstan, and Tajikistan, and shared the methods while assisting productions with the Hualapai and Navajo Nations. With the Spencer Lab I am working in the Congo River Basin and refining Folk Filmmaking as a method for communicating environmental issues through respectful, cross-cultural media production.

Dr. Jon Hawkings


My current research focuses on iron, phosphorus, nitrogen, silica and trace element (e.g. Mo, V, Mn) production, cycling and export from glacial environments, with my current interest centered on the Greenland Ice Sheet, the Patagonia Ice Fields and the Himalayas. These elements are considered essential nutrients for stimulating primary and secondary production, and therefore are potentially strengthening the biological pump in the oceans surrounding the Greenland and Antarctic ice sheets, and in other glaciated environments such as the Pacific Northwest and the coast of Patagonia. Understanding the sensitivity of nutrient fluxes to increased mass loss from glaciers is therefore important. It will allow us to ascertain the potential impact of rapidly melting ice sheets on downstream biogeochemical cycles not only in the future, but also during past glacial cycles (e.g. rapid deglaciations), and snowball earth events.
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Dr. Anne Kellerman


My research interests revolve around organic matter (particularly dissolved), its sources, sinks and factors that control both its degradation and persistence. I am interested in a variety of aspects of organic matter biogeochemistry: the detailed characterization of chemical composition and controls thereof, the link between chemical composition and reactivity, the importance of intrinsic and extrinsic controls on organic matter persistence and reactivity, and the pathways that protect organic matter from microbial degradation. I am also interested in how the methods we use to characterize organic matter influence our interpretation of how it exists in situ. Such methods include absorbance and fluorescence spectroscopy, size exclusion chromatography, and ultrahigh resolution mass spectrometry. My research questions often pertain to the effects anthropogenic activities have on organic matter characteristics, such as how land-use and climate change affect dissolved organic matter composition and the link between composition and reactivity. My biogeochemical interests sprouted in lakes but have spread to any watery ecosystem and even soils. Publications