2 Works

Data from: Dermal denticle assemblages in coral reef sediments correlate with conventional shark surveys

Erin Dillon, Kevin Lafferty, Douglas McCauley, Darcy Bradley, Richard Norris, Jennifer Caselle, Graziella DiRenzo, Jonathan Gardner & Aaron O'Dea
It is challenging to assess long-term trends in mobile, long-lived, and relatively rare species such as sharks. Despite ongoing declines in many coastal shark populations, conventional surveys might be too fleeting and too recent to describe population trends over decades to millennia. Placing recent shark declines into historical context should improve management efforts as well as our understanding of past ecosystem dynamics. A new paleoecological approach for surveying shark abundance on coral reefs is to...

Data from: Fossil dermal denticles reveal the pre-exploitation baseline of a Caribbean coral reef shark community

Erin Dillon, Douglas McCauley, Jorge Manuel Morales-SaldaƱa, Nicole Leonard, Jian-Xin Zhao & Aaron O'Dea
Pre-exploitation shark baselines and the history of human impact on coral reef-associated shark communities in the Caribbean are poorly understood. We recovered shark dermal denticles from mid-Holocene (~7 ka) and modern reef sediments in Bocas del Toro, Caribbean Panama to reconstruct an empirical shark baseline before major human impact and quantify how much the modern shark community in the region had shifted from this historical reference point. We found that denticle accumulation rates, a proxy...

Registration Year

  • 2021
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  • 2020
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Resource Types

  • Dataset
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Affiliations

  • University of California, Santa Barbara
    2
  • Smithsonian Tropical Research Institute
    2
  • Victoria University of Wellington
    1
  • University of Queensland
    1
  • Pennsylvania State University
    1
  • Scripps Institution of Oceanography
    1