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International Journal of Earth Sciences

, Volume 92, Issue 4, pp 520–531 | Cite as

Possible refugia for reefs in times of environmental stress

  • B. RieglEmail author
  • W. E. Piller
Original Paper

Abstract

This paper investigates the refuge potential of (1) upwelling areas, (2) coral areas at medium depth, and (3) offshore bank and island reefs in a scenario of increased global warming, and thus increased sea surface temperature (SST) and increased solar UV radiation. (1) Observations on coral health and water temperature in the subtropical Atlantic (Eleuthera and Cat Island, Bahamas) and Indian Ocean (Sodwana Bay, South Africa) suggest a link between cool water delivered by upwelling and coral health. After the 1998 bleaching event, caused by strong SST anomalies, coral health and recovery from the previous year's bleaching was significantly better on the narrow southern Cat Island shelf (70% of corals healthy) where the presence of cold water was observed, which was attributed to small-scale upwelling, than on the wide northern Eleuthera shelf (44% of corals healthy), where downwelling of hot bank waters was believed to have damaged corals. In South Africa, regular, short-term upwelling events in five summers reduced SST to well below bleaching level. (2) In the northern Red Sea (Safaga Bay) and in South Africa (Sodwana Bay), wide areas with either coral frameworks or non-framework communities exist. Calculations show that if the top 10 m (20 m) of the ocean became inhospitable to corals, still 50.4% (17.5%) of the coral area would remain intact in the Red Sea and 99% (40%) in South Africa. (3) Offshore bank and island reefs investigated in the Turks, Caicos, and Mouchoir Banks and Grand and Little Cayman showed high rates of mortality and coral diseases. The most remote sites (Mouchoir Bank) were not the healthiest. Refuge areas appear to exist in (1) and (2), but in (3) only if vigorous water-circulation is encountered.

Keywords

Coral reef Upwelling Reef health Sea surface temperature Bahamas South Africa Red Sea Cayman Islands Refuge 

Notes

Acknowledgements

This study was financed by Austrian Science Foundation (FWF) grant P13165-GEO and NOAA grant NA16OA1443. Support by the KwaZulu/Natal Nature Conservation Services and the University of Natal at Pietermaritzburg is acknowledged. Special thanks for support in South Africa go to M. Samways (UNP), B. Elliott, I. and J. Porter (KZNNCS), J.R.E. Lutjeharms (UCT), and M. Schleyer (ORI). Joanie Splaine of RSMAS/UM provided us with time, patience, and processed AVHRR imagery. We appreciate many discussions with P. Glynn, who put many more thoughts than just those expressed in this paper into our minds. C. Manfrino organized and took an important part in research in the Turks and Caicos and Cayman Islands.

References

  1. Alker AP, Smith GW, Kim K (2001) Characterisation of Aspergillus sydowii (Thum et Church), a fungal pathogen of Caribbean sea fan corals. Hydrobiologia 460:105–111CrossRefGoogle Scholar
  2. Angel MV, Baars MA, Barber RT, Chavez FP, Kastner M, Leinen M, Lutjeharms JRE, Reverdin G, Shimmield GB (1994) Group report: how do open ocean upwelling systems operate as integrated physical, chemical, and biological systems and influence the geological record. In: Summerhayes CP, Emeis K-C, Angel MV, Smith RL, Zeitschel B (eds) Upwelling in the ocean: modern processes and ancient records. Wiley, Chichester, pp 193–219Google Scholar
  3. Antonius A (1995) Pathologic syndromes on reef corals: a review. In: Geister J, Lathuillere B (eds) Coral reefs in the past, the present and the future. Proc 2nd Eur Regional Meeting, ISRS, Publ Serv Geol Lux 29:161–169Google Scholar
  4. Aronson RB, Precht WF, Macintyre IG (1998) Extrinsic control of species replacement on a Holocene reef in Belize: the role of coral diseases. Coral Reefs 17:223–230CrossRefGoogle Scholar
  5. Baker AC (2001) Reef corals bleach to survive change. Nature 411:765–766PubMedGoogle Scholar
  6. Blanchon P, Jones B (1997) Hurricane control on shelf-edge reef architecture around Grand Cayman. Sedimentology 44:479–506Google Scholar
  7. Blanchon P, Jones B, Kalbfleisch W (1997) Anatomy of a fringing reef around Grand Cayman: storm rubble, not coral framework. J Sediment Res 67:1–16Google Scholar
  8. Buddemeier RW (2001) Is it time to give up? Bull Mar Sci 69(2):317–326Google Scholar
  9. Chadwick-Furman NE (1996) Reef coral diversity and global change. Global Change Biol 2:559–568Google Scholar
  10. Cook CB, Logan A, Ward J, Luckhurst B, Berg CJ (1990) Elevated temperatures and bleaching on a high latitude reef: the 1988 Bermuda event. Coral Reefs 9:45–49Google Scholar
  11. Curtis S, Hastenrath S (1995) Forcing of anomalous sea surface temperature evolution in the tropical Atlantic during El Niño warm events. J Geophys Res 100:15835–15847Google Scholar
  12. D'Croz L, Mate JL, Oke JE (2001) Responses to elevated sea water temperature and UV radiation in the coral Porites lobata from upwelling and non-upwelling environments on the Pacific coast of Panama. Bull Mar Sci 69(1):203–214Google Scholar
  13. Dill RF, Kendall CGStC, Shinn EA (1989) Giant stromatolites and related sedimentary features. In: Sediments and stratigraphy of carbonate rock sequences. 28th Int Geol Congr 2, Am Geophys Union T173:1–33Google Scholar
  14. Dunne RP, Brown BE (2001) The influence of solar radiation on bleaching of shallow water reef corals in the Andaman Sea, 1993–1998. Coral Reefs 20:201–210Google Scholar
  15. Elliott JR, Jewson SP, Sutton RT (2001) The impact of the 1997/98 El Niño event on the Atlantic ocean. J Climate 14:1069–1077CrossRefGoogle Scholar
  16. Feingold J (2001) Responses of three coral communities to the 1997–98 El Niño-Southern Oscillation: Galapagos Islands, Ecuador. Bull Mar Sci 69(1):61–77Google Scholar
  17. Fong P, Glynn PW (2001) Population abundance and size-structure of an eastern tropical Pacific reef coral after the 1997–98 ENSO: a simulation model predicts field measures. Bull Mar Sci 69(1):187–202Google Scholar
  18. Ginsburg RN, Gischler E, Kiene WE (2001) Partial mortality of massive reef-building corals: an index of patch reef condition, Florida reef tract. Bull Mar Sci 69(3):1149–1173Google Scholar
  19. Gleason MG (1993) Effects of disturbance on coral communities: bleaching in Moorea, French Polynesia. Coral Reefs 12:193–201Google Scholar
  20. Gleason DF, Wellington GM (1993) Ultraviolet radiation and coral bleaching. Nature 365:836–838Google Scholar
  21. Glynn PW (1996) Coral reef bleaching: facts, hypotheses and implications. Global Change Biol 2:495–509Google Scholar
  22. Glynn PW (2000) El Niño–Southern Oscillation mass mortalities of reef corals: a model of high temperature marine extinctions? In: Insalaco E, Skelton PW, Palmer PJ (eds) Carbonate platform systems: components and interactions. Geol Soc (Lond) Spec Publ 178:117–133Google Scholar
  23. Glynn PW, Druffel EM, Dunbar RB (1983) A dead Central American reef tract: possible link with the Little Ice Age. J Mar Res 41:605–637Google Scholar
  24. Glynn PW, Colley SB (ed) (2001) A collection of studies on the effects of the 1997–98 El Niño–Southern Oscillation event on corals and coral reefs in the eastern tropical Pacific. Bull Mar Sci 69(1):1–288Google Scholar
  25. Glynn PW, Mate JL, Baker AC, Calderon MO (2001) Coral bleaching and mortality in Panama and Ecuador during the 1997–1998 El Niño–Southern Oscillation even. Spatial/temporal patterns and comparison with the 1982–1983 event. Bull Mar Sci 69(1):79–109Google Scholar
  26. Hickey BM, MacCready P, Elliott E, Kachel NB (2000) Dense saline plumes in Exuma Sound, Bahamas. J Geophys Res 105C5:11471–11488Google Scholar
  27. Hoegh-Guldberg O (1999). Climate change, coral bleaching and the future of the world's coral reefs. Mar Freshw Res 50(8):839–866Google Scholar
  28. Hoegh-Guldberg O, Ross JJ, Ward S, Loh WK (2002) Is coral bleaching really adaptive? Nature 415:601–602Google Scholar
  29. Hsueh Y, O'Brien JJ (1971) Steady coastal upwelling induced by an along-shore current. J Phys Oceanogr 1:180–186CrossRefGoogle Scholar
  30. Jimenez C, Cortes J, Leon A, Ruiz E (2001) Coral bleaching and mortality associated with the 1997–98 El Niño in an upwelling environment in the eastern Pacific (Gulf of Papagayo, Costa Rica). Bull Mar Sci 69(1):151–169Google Scholar
  31. Jordan IE, Samways MJ (2001) Recent changes in the coral assemblages composition of a South African coral reef, with recommendations for long-term monitoring. Biodivers Conserv 10(7):1027–1037CrossRefGoogle Scholar
  32. Kleypas JA, Buddemeier RW, Archer D, Gattuso J-P, Langdon C, Opdyke BN (1999) Geochemical consequences of increased atmospheric carbon dioxide on coral reefs. Science 284:118–120PubMedGoogle Scholar
  33. Kushmaro A, Rosenberg E, Fine M, Loya Y (1997) Bleaching of the coral Oculina patagonica by Vibrio AK-1. Mar Ecol Prog Ser 147:159–165Google Scholar
  34. Lang JC, Wicklund RI, Dill RF (1988) Depth- and habitat-related bleaching of zooxanthellate reef organisms near Lee Stocking Island, Exuma Cays, Bahamas, Proc 6th Int Coral Reef Symp, pp 269–274Google Scholar
  35. Lough JM (2000) 1997–8: unprecedented thermal stress to coral reefs? Geophys Res Lett 27(23):3901–3904Google Scholar
  36. Lutjeharms JRE, Cooper J, Roberts M (2000a) Upwelling at the inshore edge of the Agulhas current. Cont Shelf Res 20:737–761CrossRefGoogle Scholar
  37. Lutjeharms JRE, Valentine HR, van Ballegooyen RC (2000b) The hydrography and water masses of the Natal Bight, South Africa. Cont Shelf Res 20:1907–1939CrossRefGoogle Scholar
  38. Marubini F, Atkinson MJ (1999) Effects of lowered pH and elevated nitrate on coral calcification. Mar Ecol Prog Ser 188:117–121Google Scholar
  39. McManus JW (1997) Tropical marine fisheries and the future of coral reefs: a brief review with emphasis on Southeast Asia. Coral Reefs 16 Suppl, S121–S127Google Scholar
  40. Obura D, Souter D, Linden O (2000) Coral reef degradation in the Indian Ocean (CORDIO). Reef Encounter 27:43–44Google Scholar
  41. Piller WE, Perversler P (1989) The northern Bay of Safaga (Red Sea, Egypt): an actuopalaeontological approach. Beitr Palaeont Oe 15:103–147Google Scholar
  42. Podesta GP, Glynn PW (2001) The 1997–98 El Niño event in Panama and Galapagos: an update of the thermal stress indices relative to coral bleaching. Bull Mar Sci 69(1):43–59Google Scholar
  43. Porter JW, Porter KG (eds) (2002) The Everglades, Florida Bay, and coral reefs of the Florida Keys: an ecosystem sourcebook. CRC Press, Boca RatonGoogle Scholar
  44. Ramsay PJ (1994) Marine geology of the Sodwana Bay shelf, South Africa. Mar Geol 120:225–247Google Scholar
  45. Ramsay PJ, Mason TR (1990) Development of a type zoning model for Zululand coral reefs, Sodwana Bay, South Africa. J Coast Res 6:829–852Google Scholar
  46. Reyes Bonilla H (2001) Effects of the 1997–1998 El Niño–Southern Oscillation on coral communities of the Gulf of California, Mexico. Bull Mar Sci 69(1):251–266Google Scholar
  47. Reynolds RW, Smith TM (1994) Improved global sea surface temperature analyses using optimum interpolation. J Clim 7:929–948CrossRefGoogle Scholar
  48. Riegl B (2001) Inhibition of reef framework by frequent disturbance: examples from the Arabian Gulf, South Africa, and the Cayman Islands. Palaeogeogr, Palaeoclimatol, Palaeoecol 175:79–101Google Scholar
  49. Riegl B, Riegl A (1996) Studies on coral community structure as basis for marine reserve zonation. Biol Conserv 77(2–3):269–277Google Scholar
  50. Riegl B, Piller WE (1999) Coral frameworks revisited: reefs and coral carpets in the northern Red Sea. Coral Reefs 18(3):241–254Google Scholar
  51. Riegl B, Piller WE (2000) Reefs and coral carpets in the northern Red Sea as models for organism–environment feedback in coral communities and its reflection in growth fabrics. In: Insalaco E, Skelton PW, Palmer TJ (eds) Carbonate platform systems: components and interactions. Geol Soc Spec Pub 178:71–88Google Scholar
  52. Roberts HH, Rouse LJ Jr, Walker ND, Hudson JH (1982) Cold-water stress in Florida Bay and northern Bahamas – a product of winter cold-air outbreaks. J Sed Petrol 52:145–155Google Scholar
  53. Schleyer MH (1999) A synthesis of KwaZulu/Natal coral research. Oceanogr Res Inst Durban Spec Publ 5:1–36Google Scholar
  54. Schumann EH (1986) The bottom boundary layer inshore of the Agulhas current off Natal in August 1975. S Afr J Mar Sci 4:93–102Google Scholar
  55. Smith NP (2001) Weather and hydrographic conditions associated with coral bleaching: Lee Stocking Island, Bahamas. Coral Reefs 20:415–422CrossRefGoogle Scholar
  56. Stanley GD (2001) The history and sedimentology of ancient reef systems. Kluwer, DordrechtGoogle Scholar
  57. Toren A, Landau L, Kushmaro A, Loya Y, Rosenberg E (1998) Effect of temperature on adhesion of Vibrio Strain AK-1 to Oculina patagonica and on coral bleaching. Appl Environ Microbiol 64:1379–1384Google Scholar
  58. Vermeij GJ (1986) Survival during biotic crises: the properties and evolutionary significance of refuges. In: Elliott DK (ed) Dynamics of extinction. Wiley, New York, pp 231–246Google Scholar
  59. Veron JEN (1995) Corals in space and time. UNSW Press, SydneyGoogle Scholar
  60. Wellington GM, Glynn PW, Strong AE, Nauarrete SA, Wieters E, Hubbard D (2001) Crisis on coral reefs linked to climate change. EOS 82(1):1–7Google Scholar
  61. Wilkinson C (1998) The 1997–1998 mass bleaching event around the world. In: Wilkinson C (ed) Status of coral reefs of the world: 1998. Aust Inst Mar Sci, pp 15–38Google Scholar
  62. Wilkinson C (ed) (2000) Status of coral reefs of the world: 2000. Aust Inst Mar Sci, TownsvilleGoogle Scholar

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  1. 1.National Coral Reef Institute, Oceanographic CenterNova Southeastern UniversityDania USA
  2. 2.Institut für Geologie und PaläontologieUniversität GrazGrazAustria

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