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Arctic Paleoceanography

Bering-Chukchi Sea Shelf Ecosystems

In addition to paleoceanographic studies, this project also examines the modern Bering-Chukchi Sea continental shelf regions to evaluate climate-driven ecosystem changes over the last 40 years. The central-northern Bering Sea, located in a transition zone between temperate and Arctic climatic zones, exhibits complex spatial and temporal oceanographic variability. This work uses temperature-sensitive ostracode species as monitors of ecosystem changes driven by climatic processes. Figure 5 shows surface sediments collected during Bering and Chukchi Sea research cruises that were analyzed to examine ostracode faunal assemblages and ecosystem changes over the past 40 years.

Figure 1

Figure 5.
Figure from Gemery et al., submitted.
Figure modified from: International Bathymetric Chart of the Arctic Ocean (IBCAO)
Further reading, see Grebmeier 2012

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