Original scientific paper
https://doi.org/10.20302/NC.2016.25.4
Living and Quaternary Ostracoda from the Eastern Adriatic Sea: Biocoenoses, thanatocoenoses or palaeothanatocoenoses?
Henning Uffenorde
; Geoscience Centre, GZG, Museum, Collections & Geopark, Göttingen University, Göttingen, Germany
Abstract
Many new ostracod species from the Northern Adriatic Sea are based on descriptions of empty valves that were nevertheless interpreted as being parts of recent marine habitats and listed in several zoological checklists and databases. Sedimentary-geological studies contradict this interpretation. Ostracods from 2 cores taken off the Istrian Coast prove the existence of a relatively uniform subsurface layer with a rich death assemblage from a palaeoenvironmental depth zone prior or equal to the sea-level that existed 7–5 ka BP, related to the postglacial sea-level change. This layer was covered by patches with extremely different ostracod bio-, thanato- or palaeothanatocoenoses, depending on storm re-deposition, lag deposition or bioturbation. In terms of sequence stratigraphy, the Maximum Flooding Surface and a condensed Highstand Systems Tract are still forming the bottom areas more than 5 km off the Istrian Coast.
Keywords
Ostracoda; Crustacea; biocoenosis; thanatocoenosis; palaeothanatocoenosis; Quaternary; type locality; Adriatic Sea
Hrčak ID:
160559
URI
Publication date:
30.6.2016.
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