Originally trained as a forest ecologist, I apply techniques developed by dendrochronologists (tree-ring scientists) to generate growth-increment chronologies from the growth increments of marine and freshwater species. The need for such long-term data is especially pressing considering the oceans’ influence on global climate, the tremendous pressures of human use on marine ecosystems, and the scarcity of observational records. Chronologies are used to:
-establish long-term patterns in growth and productivity well as their relationships to climate
-address long-term impacts of human use
-hind-cast climate prior to the start of instrumental records
-describe inter-relationships across diverse species and among marine, freshwater, and terrestrial ecosystems
I also maintain work in terrestrial ecology, using dendrochronology as a tool for reconstructing histories of climate and forest disturbance. Other research interests include the use of original land surveys and archaeological records to describe the composition of forests prior to European settlement and the influences of Native American populations.
My current research focuses on how to detect and understand changes in the ocean's geochemical and physical processes caused by global warming, and how this can be used to better predict the global change and impacts. Specifically, I am working on the analysis of temporal trend of dissolved oxygen in the Southern Ocean, and the North Pacific and the North Atlantic Oceans during the past decades to detect the ocean’s response to climate change.
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