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Hi all,</div>
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<p style="margin-top: 0px; margin-bottom: 0px">Please join us for our next speaker in the Fall<span style="margin: 0px"> </span><span style="margin: 0px">EOAS</span><span style="margin: 0px"> </span><span style="margin: 0px">Colloquium</span><span style="margin: 0px"> </span>series,
this Friday Oct. 11 at 3:30 in CAR 101.<br>
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<p style="margin-top: 0px; margin-bottom: 0px"><font size="+1"><b>Dr. Daniel Ohnemus,<span style="margin: 0px"> </span></b><span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255); display: inline !important">Skidaway
Institute of Oceanography, <span style="font-family: Calibri, Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255); display: inline !important">University of Georgia</span></span><span style="margin: 0px"></span></font></p>
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<b>Title</b>: Exposing “Latent” Scavenged Particulate Phases in the Oceans<br>
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<b>Abstract</b>: The last decade has seen a rapid increase in the number of high-resolution, multi-elemental datasets for particulate (and dissolved) concentrations in the oceans, largely through the work of the international GEOTRACES program. Our conceptual
framework for marine trace element cycling, especially in the open ocean, often remains simplified as the production and remineralization of phytoplankton biomass. Many bioactive trace element cycles are primarily considered, often literally, an extension
of traditional Redfield macronutrient ratios. The identities and internal behaviors of other authigenic (scavenged) phases that form in the oceans remain hidden within these multi-element datasets. In this talk I demonstrate how several statistical techniques—and
a few visual ones—can reveal these latent phases in datasets from contrasting regions. We find that no bioactive element behaves identically to the macronutrient P, and that the cycles of many bioactive trace elements are dominated by strong, and potentially
predictable, internal authigenic cycles.<br>
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