Coral Reefs

, Volume 27, Issue 3, pp 697–705 | Cite as

Recruitment failure in Florida Keys Acropora palmata, a threatened Caribbean coral



Recovery of Acropora palmata from its currently imperiled status depends on recruitment, a process which is poorly documented in existing Caribbean coral population studies. A. palmata is thought to be well adapted to proliferate through the recruitment of fragments resulting from physical disturbances, such as moderate intensity hurricanes. This study monitored fifteen 150 m2 fixed study plots on the upper Florida Keys fore-reef for asexual and sexual recruitment from 2004 to 2007. Between July and October 2005, 4 hurricanes passed by the Florida Keys, producing wind speeds on the reef tract of 23 to 33 m s−1. Surveys following the hurricanes documented an average loss of 52% estimated live tissue area within the study plots. The percentage of “branching” colonies in the population decreased from 67% to 42% while “remnant” colonies (isolated patches of tissue on standing skeleton) increased from 11% to 27%. Although some detached branches remained as loose fragments, more than 70% of the 380 fragments observed in the study plots were dead or rapidly losing tissue 3 weeks after Hurricane Dennis. Over the course of the study, only 27 fragments became attached to the substrate to form successful asexual recruits. Meanwhile, of the 18 new, small encrusting colonies that were observed in the study, only 2 were not attributable to asexual origin (i.e., remnant tissue from colonies or fragments previously observed) and are therefore possible sexual recruits. In summary, the 2005 hurricane season resulted in substantial loss of A. palmata from the upper Florida Keys fore-reef from a combination of physical removal and subsequent disease-like tissue mortality, and yielded few recruits of either sexual or asexual origin. Furthermore, the asexual and sexual fecundity of the remaining population is compromised for the near future due to the lack of branches (i.e., “asexual fecundity”) and overall loss of live tissue.


Fragment Disturbance Hurricane Disease 


  1. Bak RPM (1983) Neoplasia, regeneration and growth in the reef-building coral Acropora palmata. Mar Biol 77:221–227CrossRefGoogle Scholar
  2. Bak RPM, Criens SR (1982) Experimental fusion in Atlantic Acropora (Scleractinia). Mar Biol Lett 3:67–72Google Scholar
  3. Baums IB, Miller MW, Szmant AM (2003) Ecology of a corallivorous gastropod, Coralliophila abbreviata, on two scleractinian hosts. I: population structure of snails and corals. Mar Biol 142:1083–1091Google Scholar
  4. Baums IB, Miller MW, Hellberg ME (2005) Regionally isolated populations of an imperiled Caribbean coral, Acropora palmata. Mol Ecol 14:1377–1390PubMedCrossRefGoogle Scholar
  5. Bonito V, Grober-Dunsmore R (2006) Resheeting of relict Acropora palmata framework may promote fast growth, but does it compromise the structural integrity of the colony? Coral Reefs 25:46CrossRefGoogle Scholar
  6. Bruckner AW (2002) Proceedings of the Caribbean Acropora workshop: potential application of the US Endangered Species Act as a conservation strategy. NOAA Technical Memorandum NMFS-OPR-24Google Scholar
  7. Bythell J, Pan P, Lee J (2001) Three-dimensional morphometric measurements of reef corals using underwater photogrammetry techniques. Coral Reefs 20:193–199CrossRefGoogle Scholar
  8. Coffroth MA, Lasker HR (1998) Population structure of a clonal gorgonian coral: the interplay between clonal reproduction and disturbance. Evolution 52:379–393CrossRefGoogle Scholar
  9. Connell JH (1978) Diversity in tropical rain forests and coral reefs. Science 1999:1302–1310CrossRefGoogle Scholar
  10. Douhovnikoff V, McBride JR, Dodd RS (2005) Salix exigua clonal growth and population dynamics in relation to disturbance regime variation. Ecology 86:446–452CrossRefGoogle Scholar
  11. Fadlallah YH (1983) Sexual reproduction, development and larval biology in scleractinian corals. Coral Reefs 2:129–150CrossRefGoogle Scholar
  12. Fagan WF, Holmes EE (2006) Quantifying the extinction vortex. Ecol Lett 9:51–60PubMedGoogle Scholar
  13. Fong P, Lirman D (1995) Hurricanes cause population expansion of the branching coral Acropora palmata (Scleractinia): wound healing and growth patterns of asexual recruits. Mar Ecol 16:317–335CrossRefGoogle Scholar
  14. Gardner TA, Cote IM, Gill JA, Grant A, Watkinson AR (2005) Hurricanes and Caribbean coral reefs: impacts, recovery patterns, and role in long-term decline. Ecology 86:174–184CrossRefGoogle Scholar
  15. Gilpin ME, Soulé ME (1986) Minimum viable populations: processes of species extinction. In: Soulé ME (ed) Conservation biology: the science of scarcity and diversity. Sinauer Associates, Sunderland, pp 19–34Google Scholar
  16. Grober-Dunsmore R, Bonito V, Frazer TK (2006) Potential inhibitors to recovery of Acropora palmata populations in St. John, US Virgin Islands. Mar Ecol Prog Ser 321:123–132CrossRefGoogle Scholar
  17. Highsmith RC (1982) Reproduction by fragmentation in corals. Mar Ecol Prog Ser 7:207–226CrossRefGoogle Scholar
  18. Highsmith RC, Riggs AC, Dantonio CM (1980) Survival of hurricane-generated coral fragments and a disturbance model of reef calcification/growth rates. Oecologia 46:322–329Google Scholar
  19. Honnay O, Bossuyt B (2005) Prolonged clonal growth: escape route or route to extinction? Oikos 108:427–432CrossRefGoogle Scholar
  20. Hughes TP, Tanner JE (2000) Recruitment failure, life histories, and long-term decline of Caribbean corals. Ecology 81:2250–2263CrossRefGoogle Scholar
  21. Jordan-Dahlgren E (1992) Recolonization patterns of Acropora palmata in a marginal environment. Bull Mar Sci 51:104–117Google Scholar
  22. Kojis BL, Quinn NJ (2001) The importance of regional differences in hard coral recruitment rates for determining the need for coral restoration. Bull Mar Sci 69:967–974Google Scholar
  23. Lirman D (2000) Fragmentation in the branching coral Acropora palmata (Lamarck): growth, survivorship, and reproduction of colonies and fragments. J Exp Mar Biol Ecol 251:41–57PubMedCrossRefGoogle Scholar
  24. Lirman D (2003) A simulation model of the population dynamics of the branching coral Acropora palmata—effects of storm intensity and frequency. Ecol Model 161:169–182CrossRefGoogle Scholar
  25. Lirman D, Fong P (1997) Patterns of damage to the branching coral Acropora palmata following Hurricane Andrew: damage and survivorship of hurricane-generated asexual recruits. J Coast Res 13:67–72Google Scholar
  26. Lugo AE, Rogers CS, Nixon S (2000) Hurricanes, coral reefs and rainforests: resistance, ruin and recovery in the Caribbean. Ambio 29:106–114CrossRefGoogle Scholar
  27. McFadden CS (1997) Contributions of sexual and asexual reproduction to population structure in the clonal soft coral, Alcyonium rudyi. Evolution 51:112–126CrossRefGoogle Scholar
  28. Miller MW, Baums IB, Williams DE, Szmant AM (2002a) Status of Candidate coral, Acropora palmata, and its snail predator in the upper Florida Keys National Marine Sanctuary: 1998–2001. NOAA Technical Memorandum NMFS-SEFSC-479Google Scholar
  29. Miller MW, Jaap WC, Chiappone M, Vargas Angel B, Keller BD, Aronson RB, Shinn EA (2002b) Acropora corals in Florida: status, trends, conservation, and prospects for recovery. In: Bruckner AW (ed) Proceedings of the Caribbean Acropora workshop: potential application of the US Endangered Species Act as a conservation strategy: April 16–18, 2002, Miami, Florida. NOAA Technical Memorandum NMFS-OPR-24, pp 59–70Google Scholar
  30. Miller MW, Baums IB, Williams DE (2007) Visual discernment of sexual recruits not feasible for Acropora palmata. Mar Ecol Prog Ser 335:227–231CrossRefGoogle Scholar
  31. NMFS (2006) Endangered and threatened species: final listing determinations for Elkhorn coral and Staghorn coral. Federal Register 71:26852–26861Google Scholar
  32. Quinn NJ, Kojis BL (2005) Patterns of sexual recruitment of acroporid coral populations on the West Fore Reef at Discovery Bay, Jamaica. Rev Biol Trop 53(Suppl 1):83–89PubMedGoogle Scholar
  33. Reusch TBH, Ehlers A, Hammerli A, Worm B (2005) Ecosystem recovery after climatic extremes enhanced by genotypic diversity. Proc Natl Acad Sci USA 102:2826–2831Google Scholar
  34. Rogers CS, Fitz HCI, Gilnack M, Hardin J (1984) Scleractinian coral recruitment patterns at Salt River Submarine Canyon, St. Croix, U.S. Virgin Islands. Coral Reefs 3:69–76CrossRefGoogle Scholar
  35. Schmid B (1994) Effects of genetic diversity in experimental stands of Solidago altissima: evidence for the potential role of pathogens as selective agents in plant-populations. J Ecol 82:165–175CrossRefGoogle Scholar
  36. Shinn EA, Salomonson VV, Bhavsar PD (1980) Geologic history of Grecian Rocks, Key Largo Coral Reef Marine Sanctuary. Bull Mar Sci 30:646–656Google Scholar
  37. Soong K, Lang JC (1992) Reproductive integration in reef corals. Biol Bull 183:418–431CrossRefGoogle Scholar
  38. Van Moorsel GWNM (1988) Early maximum growth of stony corals (Scleractinia) after settlement on artificial substrata on a Caribbean reef. Mar Ecol Prog Ser 50:127–135CrossRefGoogle Scholar
  39. Van Moorsel GWNM (1989) Juvenile ecology and reproductive strategies of reef corals. Ph.D. thesis, Rijksuniversiteit Groningen, p 104Google Scholar
  40. Voss GL (2002) An environmental assessment of the John Pennekamp Coral Reef State Park and the Key Largo Coral Reef Marine Sanctuary (Unpublished 1983 Report). In: Voss NA, Cantillo AY, Bello MJ (eds) NOAA/University of Miami Joint Publication NOAA Technical Memorandum NOS NCCOS CCMA 161Google Scholar
  41. Williams DE, Miller MW (2005) Coral disease outbreak: pattern, prevalence and transmission in Acropora cervicornis. Mar Ecol Prog Ser 301:119–128CrossRefGoogle Scholar
  42. Williams DE, Miller MW (2006) Importance of disease & predation to the growth & survivorship of juvenile Acropora palmata & Acropora cervicornis: a demographic approach. Proc 10th Int Coral Reef Symp 1:1096–1104Google Scholar
  43. Williams DE, Miller MW, Kramer KL (2006) Demographic monitoring protocols for threatened Caribbean Acropora spp. corals NOAA Technical Memorandum NMFS-SEFSC-543Google Scholar
  44. Zubillaga AL, Bastidas C, Croquer A (2005) High densities of the Elkhorn coral Acropora palmata in Cayo de Agua, Archipelago Los Roques National Park, Venezuela. Coral Reefs 24:86–86CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • D. E. Williams
    • 1
    • 2
  • M. W. Miller
    • 2
  • K. L. Kramer
    • 3
  1. 1.Cooperative Institute for Marine & Atmospheric StudiesRSMAS University of MiamiMiamiUSA
  2. 2.NOAA Fisheries, Southeast Fisheries Science CenterMiamiUSA
  3. 3.National Park Service, Pacific Island Network Inventory and MonitoringHawai’i National ParkUSA

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