Abstract
We compared densities, distributions and size frequencies of massive corals in the genus Porites on five relatively exposed, mid-shelf reefs (∼50 km offshore) in the central Great Barrier Reef with those on a sheltered inshore reef (∼10 km offshore). Data included various transect and mapping studies between 1984 and 1990, estimates of size-dependent damage from the crown-of-thorns starfish Acanthaster planci, estimated densities of herbivorous sea urchins (potential predators of juveniles), and observations of size-specific effects of tropical cyclones. Assemblages of Porites spp. on mid-shelf reefs were dominated by small colonies (2 to 10 cm diam) established either from planula larvae or from small tissue remnants that had survived A. planci predation in the early to mid-1980s. Large colonies (up to 10 m diam) were scarce, except for localized aggregations on terraces at the base of reef slopes (∼6 to 12 m deep). Extensive space suitable for settlement by coral larvae can be attributed to recurrent cyclones and A. planci outbreaks. Despite low sea urchin predation, the slowly growing Porites juveniles are likely to die from overgrowth by numerous, much faster growing corals. On the sheltered inshore reef, the coral community was dominated by very large (>5 m diam) Porites colonies, several centuries old; recruitment was mainly by fragmentation of large colonies; there was little space available for settlement, and probabilities of juvenile mortality from grazing urchins were high. Differences in settlement and early survival of Porites spp. are exacerbated by different regimes of storm damage. A model is proposed that links wave climate with the size and age reached by corals before dislodgement by storm waves, and which is consistent with observed densities and size-frequency distributions of Porites in sheltered and exposed areas.
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Literature cited
Barnes, D. J., Brauer, R. W., Jordan, M. R. (1970). Locomotory response of Acanthaster planci to various species of coral. Nature, Lond. 228: 342–343
Brauer, R. W., Jordan, M. R., Barnes, D. J. (1970). Triggering of the stomach eversion reflex of Acanthaster planci by coral extracts. Nature, Lond. 228: 344–346
COT-CCEP Team (1985). An assessment of the distribution and effects of Acanthaster planci (L.) of the Great Barrier Reef. Massive coral study. Australian Institute of Marine Science, Townsville
Darke, W. M. (1991). Growth and form of the massive coral Porties. PhD thesis. James Cook University of North Queensland, Townsville
Davies, P. J., Hopley, D. (1983). Growth fabrics and growth rates of Holocene reefs in the Great Barrier Reef. BMR (Bur. Mineral Resources) J. Aust. Geol. Geophys. 8: 237–251
Denny, M. W. (1988). Biology and the mechanics of the wave-swept environment. Princeton University Press, Princeton, New Jersey, USA
Denny, M. W., Daniel, T. R., Koehl, M. A. R. (1985). Mechanical limits to size in wave-swept organisms. Ecol. Monogr. 55: 69–102
DeVantier, L. M., Endean, R. (1989). Observations on colony fission following ledge formation in massive reef corals of the genus Porites. Mar. Ecol. Prog. Ser. 58: 191–195
Done, T. J. (1982). Patterns in the distribution of coral communities across the central Great Barrier Reef. Coral Reefs 1: 95–107
Done, T. J. (1985). Effects of two Acanthaster outbreaks on coral community structure — the meaning of devastation. Proc. 5th int. coral Reef Congr. 5: 315–320 [Gabrié, C., et al. (eds.) Antenne Museum-EPHE, Moorea, French Polynesia]
Done, T. J. (1987). Simulation of the effects of Acanthaster planci on the population structure of massive corals in the genus Porites: evidence of population resilience? Coral Reefs 6: 75–90
Done, T. J. (1988). Simulation of recovery of pre-disturbance size structure in populations of Porites spp. damaged by the crown of thorns starfish Acanthaster planci. Mar. Biol. 100: 51–61
Done, T. J. (1992). Effects of tropical cyclone waves on ecological and geomorphological structures on the Great Barrier Reef. Contin. Shelf Res. 12: 859–872
Done, T. J., Moran, P. J., DeVantier, L. M. (1986). Cyclone Winifred — observations on some ecological and geomorphological effects. In: Dutton, I. M. (ed.) The offshore effects of cyclone Winifred. Townsville, Queensland, Australia, p. 50–51. (Great Barrier Reef Marine Park Authority; Wkshop Ser. No. 7)
Done, T. J., Osborne, K., Navin, K. F. (1989). Recovery of corals post-Acanthaster: progress and prospects. Proc. 6th int. coral Reef Symp. 2: 135–142 [Choat, J. H., et al. (eds.) Sixth International Coral Reef Symposium Executive Committee, Townsvile]
Endean, R., Cameron, A. M., DeVantier, L. M. (1989). Acanthaster planci predation on massive corals: the myth of rapid recovery of devastated reefs. Proc. 6th int. coral Reef Symp. 2: 143–148 [Choat, J. H., et al. (eds.) Sixth International Coral Reef Symposium Executive Committee, Townsville]
Fryer, J. G., Done, T. J. (1982). An underwater trilateration. Aust. Surv. 31: 7–12
Harmelin-Vivien, M. L., Laboute, R. (1986). Catastrophic impact of hurricanes on atoll outer slopes in the Tuamoto (French Polynesia). Coral Reefs 5: 55–62
Harriott, V. T. (1983). Reproductive ecology of four scleractinian species at Lizard Island, Great Barrier Reef. Coral Reefs 2: 151–157
Highsmith, R. C. (1980). Passive colonization and asexual colony multiplication in the massive coral Porites lutea Milne Edwards. J. exp. mar. Biol. Ecol. 47: 55–67
Highsmith, R. C. (1981). Coral bioerosion at Enewetak: agents and dynamics. Int. Revue ges. Hydrobiol. 66: 335–375
Isdale, P. J. (1983). Geographical patterns in coral growth rates on the Great Barrier Reef. In: Baker, J. T., Carter, R. M., Sammarco, P. W., Stark, K. P. (eds.) Proceedings of the Inaugural Great Barrier Reef Conference. James Cook University, Townsville, Queensland, Australia, p. 321–330
Isdale, P. J. (1984). Fluorescent bands in massive corals record centuries of coastal rainfall. Nature, Lond. 310: 578–579
Kojis, B. L., Quinn, N. J. (1981). Reproductive strategies in four species of Porites (Scleractinia). Proc. 4th int. coral Reef Symp. 2: 145–151 [Gomez, E. D., et al. (eds.) Marine Sciences Center, University of the Philippines, Quezon City, Philippines]
Lough, J. M., Barnes, D. J. (1989). Possible relationships between environmental variables and skeletal density in a coral colony from the central Great Barrier Reef. J. exp. mar. Biol. Ecol. 134: 221–241
Lourensz, R. S. (1981). Tropical cyclones in the Australian region July 1909 to June 1980. Australian Government Printing Service, Canberra, Australia
Loya, Y. (1978). Plotless and transect methods. Monogr. oceanogr. Methodol. (UNESCO) 5: 197–217
Ormond, R. F. G., Campbell, A. C. (1971). Observations of Acanthaster planci and other coral reef echinoderms in the Sudanese Red Sea. Symp. zool. Soc. Lond. 28: 433–454
Potts, D. C., Done, T. J., Isdale, P. J., Fisk, D. A. (1985). Dominance of a coral community by the genus Porites (Scleractinia). Mar. Ecol. Prog. Ser. 23: 79–84
Potts, D. C., Garthwaite, R. L. (1992). Evolution of reef-building corals during periods of rapid global change. In: Dudley, E. C. (ed.) Proceedings of the Fourth International Congress of Systematic and Evolutionary Biology. Dioscorides Press, Portland, Oregon (in press)
Sammarco, P. W. (1980). Diadema and its relationship to coral spat mortality; grazing, competition, and biological disturbance. J. exp. mar. Biol. Ecol. 45: 245–272
Sammarco, P. W. (1983). Coral recruitment across the central Great Barrier Reef. In: Baker, J. T., Carter, R. M., Sammarco, P. W., Stark, K. P. (eds.) Proceedings of the Inaugural Great Barrier Reef Conference. James Cook University, Townsville, Queensland, Australia, p. 245–250
Scott, P. J. B., Risk, M. J. (1988). The effect of Lithophaga (Bivalvia; Mytilidae) boreholes on the strength of the coral Porites lobata. Coral Reefs 7: 145–151
Sebens, K. P. (1983). Size structure and growth rates in populations of colonial and solitary invertebrates. NOAA Symp. Ser. Undersea Res. 1: 9–15
Sheppard, C. R. C. (1981). Illumination and the coral community beneath tabular Acropora species. Mar. Biol. 64: 53–58
Sheppard, C. R. C. (1982). Coral populations on reef slopes and their major controls. Mar. Ecol. Prog. Ser. 7: 83–115
Stimson, J. S. (1985). The effects of shading by the table coral Acropora hyacinthus on understory corals. Ecology 66: 40–53
Veron, J. E. N. (1986). Corals of Australia and the Indo-Pacific. Angus & Robertson, North Ryde, NSW, Australia
Veron, J. E. N., Pichon, M. (1982). Scleractinia of Eastern Australia. Part IV. Family Poritidae. Monograph Ser. Aust. Inst. mar. Sci. 5: 1–159
Wolanski, E. (1986). Observations of wind-driven surface gravity waves offshore from the Great Barrier Reef. Coral Reefs 4: 213–219
Woodley, J. D. and 19 co-authors (1981). Hurricane Allen's impact on Jamaican coral reefs. Science, N. Y. 214: 744–755
Yamazato, K., Yeemin, T. (1986). Preliminary study of the inter- and intra-specific interactions among corals of Khang Khao Island, the Sichang Islands, Gulf of Thailand. Galaxea 5: 163–174
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Communicated by G. F. Humphrey, Sydney
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Done, T.J., Potts, D.C. Influences of habitat and natural disturbances on contributions of massive Porites corals to reef communities. Marine Biology 114, 479–493 (1992). https://doi.org/10.1007/BF00350040
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DOI: https://doi.org/10.1007/BF00350040