Linear extension rates of massive corals from the Dry Tortugas National Park (DRTO), Florida

Open-File Report 2013-1121
By: , and 



Colonies of three coral species, Montastraea faveolataDiploria strigosa, and Siderastrea siderea, located in the Dry Tortugas National Park (DRTO), Florida, were sampled and analyzed to evaluate annual linear extension rates. Montastraea faveolata had the highest average linear extension and variability in (DRTO: C2 = 0.67 centimeters/year (cm yr-1) ± 0.04, B3 = 0.85 cm yr-1 ± 0.07), followed by D. strigosa (DRTO: C1 = 0.73 cm yr-1 ± 0.04; MK = 0.59 cm yr-1 ± 0.06) and S. siderea (DRTO: A1 = 0.41 cm yr-1 ± 0.03). Intercolony comparison of M. faveolata from DRTO yielded a significant correlation (r = 0.34, df = 67, P = 0.005) and similar long-term patterns. DRTO S. siderea core A1 showed an overall increasing trend (r = 0.61, df = 119, P < 0.0001) in extension rates that correlated significantly with International Comprehensive Ocean/Atmosphere Data Set annual sea-surface temperature (r = 0.42, df = 115, P < 0.0001) and an air temperature record from Key West (r = 0.37, df = 111, P < 0.0001). In conclusion, annual linear extension rates are species specific and potentially influence by long-term variability in sea-surface temperature.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Linear extension rates of massive corals from the Dry Tortugas National Park (DRTO), Florida
Series title Open-File Report
Series number 2013-1121
DOI 10.3133/ofr20131121
Year Published 2013
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) St. Petersburg Coastal and Marine Science Center
Description iii, 22 p.
Country United States
State Florida
Other Geospatial Dry Tortugas National Park (drto)
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details