Dr. Randie Bundy
Assistant Professor, University of Washington, Chemical Oceanography
Lab Website
The impact of organic compounds on the cycling of trace metals in the ocean
Tuesday, September 10, 2019
12 PM
AHF 153 (Torrey Webb Room)
Abstract: Trace metals such as iron are essential nutrients for phytoplankton and bacteria, impacting primary productivity in many regions of the ocean. Our understanding of the iron cycle has improved dramatically since the dawn of the international GEOTRACES program, with the chemical speciation of iron emerging as a key control on the oceanic inventory of iron. The speciation of dissolved iron in seawater is dominated by complexation to a diverse pool of organic compounds which impact the bioavailability and reactivity of this scarce nutrient, yet the identity of these compounds are largely unknown. In this talk I will discuss how we determine the identity of these compounds in seawater with novel analytical tools, and why these organic ligands are important for trace metal cycling.
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