ArticleProceedings of the National Academy of Sciences of the United States of America2021
Fossil dermal denticles reveal the preexploitation baseline of a Caribbean coral reef shark community.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 48 citations in OpenAlex.
- Article
- Prehistoric archives reveal evidence of predator loss and prey release in Caribbean reef fish communities.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Quantifying the Denticle Multiverse: A Standardized Coding System to Capture Three Dimensional Morphological Variations for Quantitative Evolutionary and Ecological Studies of Elasmobranch Denticles.Integrative organismal biology (Oxford, England) · 2025Article
- Challenges and directions in analytical paleobiology.Paleobiology · 2023Article
- Marine conservation palaeobiology: What does the late Quaternary fossil record tell us about modern-day extinctions and biodiversity threats?Cambridge prisms. Extinction · 2023Review
- Courtship and Reproduction of the Whitetip Reef SharkAnimals : an open access journal from MDPI · 2022Article
- Fossil dermal denticles reveal the preexploitation baseline of a Caribbean coral reef shark community.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
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Authors and funding
6 authors at 3 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Preexploitation shark baselines and the history of human impact on coral reef-associated shark communities in the Caribbean are tpoorly understood. We recovered shark dermal denticles from mid-Holocene (∼7 ky ago) and modern reef sediments in Bocas del Toro, Caribbean Panama, to reconstruct an empirical shark baseline before major human impact and to quantify how much the modern shark community in the region had shifted from this historical reference point.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 for shark abundance, declined by 71% since the mid-Holocene. All denticle morphotypes, which reflect shark community composition, experienced significant losses, but those morphotypes found on fast-swimming, pelagic sharks (e.g., families Carcharhinidae and Sphyrnidae) declined the most. An analysis of historical records suggested that the steepest decline in shark abundance occurred in the late 20th century, coinciding with the advent of a targeted shark fishery in Panama. Although the disproportionate loss of denticles characterizing pelagic sharks was consistent with overfishing, the large reduction in denticles characterizing demersal species with low commercial value (i.e., the nurse shark
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