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Ostracodes Workgroup

Ostracodes are microscopic crustaceans that produce bivalved, calcite shells and live in almost all aquatic environments, from marine to freshwater, as well as semi-terrestrial wetlands and also oxygenated aquifers. Nonmarine ostracodes are used in paleoecological analysis as indicators of past hydrochemical and climate conditions. They are particularly useful because 1) they are abundant in the fossil record; 2) they are easily recovered from lacustrine and wetland sediments; and 3) the shells can be used for stable isotope and trace element analysis, as well as indicating paleoecological changes.

We are presently working to input data to NEOTOMA from an array of data sources. Our
prioritized list of datasets to be uploaded is:

  1. NANODe data (a modern calibration dataset, with hydrochemistry, presence/absence species data, and climate data from the U.S.
  2. Western U.S. Plio-Pleistocene cores or outcrop sequences that also have diatom records (USGS projects now in open-file)
  3. Great Lakes Holocene cores
  4. Great Plains Holocene cores