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Population Status of Acropora Corals in the Florida Keys
Proceedings of the 11th International Coral Reef Symposium Volume 2
  • Steven Miller, University of North Carolina - Wilmington
  • Mark Chiappone, University of North Carolina - Wilmington
  • Leanne M. Rutten, Nova Southeastern University
  • Dione W. Swanson, University of North Carolina - Wilmington
Event Name/Location
11th International Coral Reef Symposium, Fort Lauderdale, Florida, July 7-11, 2008
Document Type
Conference Proceeding
Publication Date
7-1-2008
Keywords
  • Acropora,
  • Benthic,
  • Coral,
  • Marine protected area,
  • Stratified sampling
Abstract

Population declines of staghorn coral (Acropora cervicornis) and elkhorn coral (A. palmata) are often-cited examples of Caribbean reef change since the 1970s, due, in part, to disease and localized effects from storms and predation. Both corals were listed as threatened on the U.S. Endangered Species List based upon range-wide decline and poor recovery. A spatially intensive survey undertaken in the Florida Keys of Acropora corals quantified habitat distribution, colony abundance, size, and condition at 235 sites spanning over 200 km in 2007. A two-stage stratified sampling design using belt transects incorporated cross-shelf habitats and no-fishing management zones from < 1 m to 15 m depth. A. cervicornis was widely distributed among sites and habitats and was particularly abundant on patch reefs, with up to 1.22 colonies/m2 and surface area coverage of 2%. A. palmata was abundant on shallow spur and groove reefs, with up to 1.25 colonies/m2 and surface area coverage of 25%. Although the prevalence of disease is relatively low, both species continue to suffer predation, as well as physical impacts from lost fishing gear. Predicting the future of these corals in Florida requires information about both their present-day ecology and geologic history in Florida.

Citation Information
Steven Miller, Mark Chiappone, Leanne M. Rutten and Dione W. Swanson. "Population Status of Acropora Corals in the Florida Keys" Proceedings of the 11th International Coral Reef Symposium Volume 2 (2008) p. 781 - 785
Available at: http://works.bepress.com/steven-miller/23/