U-Th dating of Holocene age Acropora prolifera (Lamarck, 1816) colonies confirms coral hybridization is not a recent phenomenon.

Alexander B. Modys; Richard A. Mortlock; Stephen V. Vollmer; Les Kaufman; William F. Precht

doi:10.2988/20-00002

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Alexander B. Modys,¹ Richard A. Mortlock,² Stephen V. Vollmer,³ Les Kaufman,⁴ William F. Precht⁵

¹(ABM) Florida Atlantic University, Department of Geosciences, 777 Glades Road, Boca Raton, FL 33431
²(RAM) Rutgers University, Department of Earth and Planetary Sciences, 610 Taylor Road, Piscataway, NJ 08854
³(SVV) Northeastern University, Department of Marine and Environmental Science, 430 Nahant Rd., Nahant, MA 01908
⁴(LK) Boston University Marine Program, 5 Cummington Mall, Boston MA, 02215
⁵(WFP) Dial Cordy and Associates, Inc., Marine and Coastal Programs, 1011 Ives Dairy Road, Suite 210, Miami, FL 33179

Abstract

To confirm previous findings that hybridization of Caribbean acroporid corals occurred in the recent geologic past, we determined the uranium-thorium (U-Th) ages of two subfossil Acropora prolifera samples collected from nearshore coral death assemblages located off the coast of southeastern Florida. Our results indicate that A, prolifera existed in southeastern Florida during the late Holocene, confirming that Caribbean acroporid hybridization occurred prior to their region-wide die off in the 1970s and 1980s.

Citation Download Citation

Alexander B. Modys, Richard A. Mortlock, Stephen V. Vollmer, Les Kaufman, and William F. Precht "U-Th dating of Holocene age Acropora prolifera (Lamarck, 1816) colonies confirms coral hybridization is not a recent phenomenon.," Proceedings of the Biological Society of Washington 133(1), 72-75, (21 September 2020). https://doi.org/10.2988/20-00002

Published: 21 September 2020