Improving estimates of coral reef construction and erosion with in-situ measurements
Limnology and Oceanography
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- Data Release: USGS data release - Experimental Data on Construction and Erosion of Orbicella Coral Reefs in the Florida Keys, U.S.A.
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Abstract
The decline in living coral since the 1970s has conspicuously slowed reef construction on a global scale, but the related process of reef erosion is less visible and not often quantified. Here we present new data on the constructional and deconstructional side of the carbonate-budget equation in the Florida Keys, U.S.A. We documented Orbicella spp. calcification rates at four offshore reefs and quantified decadal-scale rates of Orbicella-reef erosion at a mid-shore patch reef. Using Orbicella coral heads fitted with permanent markers in 1998, we measured reef-elevation loss at 28 stations over 17.3 years to estimate a mean erosion rate of -5.5 (± 3.2, SD) mm yr-1. This loss equates to an erosion rate of -8.2 (± 4.8, SD) kg m-2 yr-1 on dead Orbicella colonies, or -6.6 kg m-2 yr-1 when adjusted reef-wide. Calculating net carbonate production using a census-based approach on the same patch reef in 2017, we estimated a reef-wide bioerosion rate of -1.9 (± 2.0, SD) kg m-2 yr-1, and a net carbonate production rate of 0.5 (± 0.3, SD) kg m-2 yr-1. Substituting the erosion rate we estimated with the markers would suggest that net carbonate production at this patch reef was lower and negative, -4.2 kg m-2 yr-1. This divergence could be a function of high erosion rates measured on the tops of Orbicella colonies, which may be preferentially targeted by parrotfish. Nonetheless, our study suggests the need for new field data to improve estimates of reef-structure persistence as coral reefs continue to degrade.
Suggested Citation
Kuffner, I.B., Toth, L., Hudson, J.H., Goodwin, W.B., Stathakopoulos, A., Bartlett, L., Whitcher, E.M., 2019, Improving estimates of coral reef construction and erosion with in-situ measurements: Limnology and Oceanography, v. 64, no. 5, p. 2283-2294, https://doi.org/10.1002/lno.11184.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Improving estimates of coral reef construction and erosion with in-situ measurements |
| Series title | Limnology and Oceanography |
| DOI | 10.1002/lno.11184 |
| Volume | 64 |
| Issue | 5 |
| Publication Date | April 25, 2019 |
| Year Published | 2019 |
| Language | English |
| Publisher | ASLO |
| Contributing office(s) | St. Petersburg Coastal and Marine Science Center |
| Description | 12 p. |
| First page | 2283 |
| Last page | 2294 |
| Country | United States |
| State | Florida |