Single-species dinoflagellate cyst carbon isotope ecology across the Paleocene-Eocene Thermal Maximum

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doi: 10.1130/G39598.1
Author(s): Sluijs, Appy; van Roij, Linda; Frieling, Joost; Laks, Jelmer; Reichart, Gert-Jan
Author Affiliation(s): Primary:
Utrecht University, Department of Earth Sciences, Utrecht, Netherlands
Royal Netherlands Institute for Sea Research, Netherlands
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 46(1), p.79-82. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. GSA Data Repository item 2018018. 26 refs.; illus.
Summary: We present the first ever species-specific fossil dinoflagellate cyst stable carbon isotope (δ13C) records, from the Bass River Paleocene-Eocene Thermal Maximum (PETM) section in New Jersey (USA), established using a novel coupled laser ablation- isotope ratio mass spectrometer setup. Correspondence with carbonate δ13C records across the characteristic negative carbon isotope excursion indicates that the δ13C of dissolved inorganic carbon exerts a major control on dinocyst δ13C. Pronounced and consistent differences between species, however, reflect different habitats or life cycle processes and different response to pCO2. Decreased interspecimen variability during the PETM in a species that also drops in abundance suggests a more limited niche, either in time (seasonal) or space. This opens a new approach for ecological and evolutionary reconstructions based on organic microfossils.
Year of Publication: 2018
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Atlantic Coastal Plain; Bass River; Bass River Site; Biostratigraphy; Burlington County New Jersey; C-13/C-12; Carbon; Cenozoic; Chemostratigraphy; Cores; Dinoflagellata; Isotope ratios; Isotopes; Leg 174AX; Microfossils; New Jersey; Ocean Drilling Program; Paleocene-Eocene Thermal Maximum; Paleoecology; Paleoenvironment; Paleogene; Palynomorphs; Sediments; Stable isotopes; Tertiary; United States
Coordinates: N393642 N393642 W0742612 W0742612
Record ID: 2018039550
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States, Reference includes data supplied by the Geological Society of America