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Single-species dinoflagellate cyst carbon isotope ecology across the Paleocene-Eocene Thermal Maximum
Sluijs, A.; van Roij, L.; Frieling, J.; Laks, J.; Reichart, G.-J. (2018). Single-species dinoflagellate cyst carbon isotope ecology across the Paleocene-Eocene Thermal Maximum. Geology (Boulder Colo.) 46(1): 79-82. https://doi.org/10.1130/G39598.1
In: Geology. Geological Society of America: Boulder. ISSN 0091-7613; e-ISSN 1943-2682
Peer reviewed article  
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  • Sluijs, A.
  • van Roij, L.
  • Frieling, J.
  • Laks, J.
  • Reichart, G.-J.
Abstract
    We present the first ever species-specific fossil dinoflagellate cyststable 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 massspectrometer setup. Correspondence with carbonate δ13C recordsacross the characteristic negative carbon isotope excursion indicatesthat the δ13C of dissolved inorganic carbon exerts a major control ondinocyst δ13C. Pronounced and consistent differences between species,however, reflect different habitats or life cycle processes and differentresponse to pCO2. Decreased interspecimen variability duringthe PETM in a species that also drops in abundance suggests a morelimited niche, either in time (seasonal) or space. This opens a newapproach for ecological and evolutionary reconstructions based onorganic microfossils.
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