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12 - Coral reefs and atolls
from Part III - Coastal Systems
Summary
Synopsis
Coral polyps are simple animals that form large colonies with rich varieties of forms and adaptation to differences in wave energy levels, light and other environmental conditions. Modern coral reefs contain a wide variety of hard and soft corals, but it is the fixing of calcium carbonate by the sceleractian corals to form a hard external skeleton that provides the basis for reef development as the coral structures grow over decades and centuries and as the break-down of corals, coralline algae and other organisms that live in and on the reef supplies sediments to back reef and lagoon areas. Hard corals that grow fast enough to fix large amounts of calcium carbonate are found primarily in warm, tropical waters and exist in a symbiotic relationship with single-cell algae which remove waste and provide a large proportion of the nutrients that the corals need. They also give the corals their distinctive colour.
Coral growth is most rapid close to the surface where there is circulation of food by waves and currents and light for the symbiotic algae. Living corals reefs have a characteristic zonation that reflects the adaptation of individual species to particular levels of light, wave energy and food sources. The topography of the reef in a cross-section from the land oceanward can be divided into three zones: the reef flat which is a shallow area sheltered from direct wave action and an area of sediment accumulation; the reef crest is the shallowest part of the reef and is subject to high wave action and frequent damage to coral colonies; the forereef extends seaward into increasing water depths and decreasing light and wave energy with rapid coral growth in the portion above 20 m and a wide diversity of species.
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- Introduction to Coastal Processes and Geomorphology , pp. 369 - 395Publisher: Cambridge University PressPrint publication year: 2009
References
and 1999. An Introduction to Marine Ecology, 3rd edn.. Blackwell, Oxford, pp. 117–141.CrossRefGoogle Scholar
, and 2007. The Geomorphology of the Great Barrier Reef. Cambridge University Press, Cambridge, 532 pp.CrossRefGoogle Scholar
2005. History of Indo-Pacific coral reef systems since the last glaciation: development patterns and controlling factors. Earth-Science Reviews, 71, 1–75.CrossRefGoogle Scholar
and 1977. Holocene bioherms of Lesser Antilles: Geographic control of development. In and (eds.), Reefs and Related Carbonates: Ecology and Sedimentology. American Association of Petroleum Geologists, Studies in Ecology 4, pp, 67–81.Google Scholar
and 1995. Landscape patterns of reef coral diversity: A test of the intermediate disturbance hypothesis. Journal of Experimental Marine Biology and Ecology, 192, 1–14.CrossRefGoogle Scholar
and 2001. White band disease and the changing face of Caribbean reefs. Hydrobiologia, 460, 25–38.CrossRefGoogle Scholar
and 2006. Conservation, precaution and Caribbean reefs. Coral Reefs, 25, 441–450.CrossRefGoogle Scholar
, and 2008. Climate change and coral reef bleaching: An ecological assessment of long-term impacts, recovery trends and future outlook. Estuarine, Coastal and Shelf Science, 80, 435–471.CrossRefGoogle Scholar
, and 2008. New evidence for drowned shelf edge reefs in the Great Barrier Reef, Australia. Marine Geology, 247, 17–34.CrossRefGoogle Scholar
, , and 2006. Addressing the coral reef crisis in developing countries. Ocean and Coastal Management, 49, 976–985.CrossRefGoogle Scholar
and 2001. Multi-stage reef development on Barbados during the last interglacial. Quaternary Science Review, 20, 1093–1112.CrossRefGoogle Scholar
and 2003. Are catch-up reefs an artefact of coring?Sedimentology, 50, 1271–1282.CrossRefGoogle Scholar
, and 2004. Spatial and temporal variations in wave characteristics across a reef platform, Torres Strait, Australia. Marine Geology, 207, 169–184.CrossRefGoogle Scholar
, and 2004. Damage to the leeward reefs of Curaço and Bonaire, Netherlands Antilles from a rare storm event: Hurricane Lenny, November, 1999. Coral Reefs, 23, 297–307.CrossRefGoogle Scholar
1997. Disturbances to reefs in recent times. In (ed.), Life and Death of Coral Reefs. Chapman and Hall, New York, 354–385.CrossRefGoogle Scholar
, and 1993. Chronic and catastrophic natural mortality of three common Caribbean reef corals. Coral Reefs, 12, 143–152.CrossRefGoogle Scholar
, , , and 2006. Atoll lagoon flushing forced by waves. Coastal Engineering, 53, 691–704.CrossRefGoogle Scholar
and 2008. Coral reef communities, habitats and substrates in and near sanctuary zones of Nongaloo Marine Park. Journal of Coastal Research, 24, 139–151.CrossRefGoogle Scholar
, , , , , and 1996. Reconciliation of late Quaternary sea levels derived from coastal terraces at Huon Peninsula with deep sea oxygen isotope records. Earth and Planetary Science Letters, 141, 227–236.CrossRefGoogle Scholar
and 2007. Twenty-five years of change in coral coverage on a hurricane impacted reef in Hawaii: the importance of recruitment. Coral Reefs, 26, 705–717.CrossRefGoogle Scholar
2001. Paleoshoreline record of relative Holocene sea levels on Pacific islands. Earth-Science Reviews, 55, 191–234.CrossRefGoogle Scholar
2002. Long-term dynamics of coral reefs in St. John, US Virgin Islands. Coral Reefs, 21, 357–367.Google Scholar
, , , and 2003. Long-term region-wide declines in Caribbean corals. Science, 301, 958–960.CrossRefGoogle ScholarPubMed
1977. The influence of wave exposure on the ecological zonation of Caribbean reefs. Proceedings of the 3rd International Coral Reef Symposium, Miami, vol. 1, pp. 23–29.Google Scholar
, and 2008. Late Quaternary reef growth and sea level in the Maldives (Indian Ocean). Marine Geology, 250, 104–113.CrossRefGoogle Scholar
1990. Coral mortality and disturbances to coral reefs in the tropical eastern Pacific. In (ed.), Global Ecological Consequences of the 1982–83 El Niño–Southern Oscillation. Elsevier Oceanography Series, vol. 52, pp. 55–126.CrossRefGoogle Scholar
, , et al. 2007. Palau's coral reefs show differential habitat recovery following the 1998-bleaching event. Coral Reefs, 26, 319–332.CrossRefGoogle Scholar
and 2005. Wave-generated flow on coral reefs – an analysis for two-dimensional horizontal reef-tops with steep faces. Coastal Engineering, 52, 353–387.CrossRefGoogle Scholar
, 1994. The effects of storms and cyclones on coral reefs: a review. Journal of Coastal Research, SI 12, 211–231.Google Scholar
, , and 2008. A new coral reef province in the Gulf of Carpentaria, Australia: Colonisation, growth and submergence during the early Holocene. Marine Geology, 251, 85–97.CrossRefGoogle Scholar
1982. The interaction between grazing organisms and the epilithic algal community of a coral reef: a quantitative assessment. Proceedings Fourth International Coral Reef Symposium, Manilla, 2, 515–524.Google Scholar
1997. Effects of reef fishes on corals and algae. In (ed.), Life and Death of Coral Reefs. Chapman and Hall, New York, 230–248.CrossRefGoogle Scholar
, and 2007. The Geomorphology of the Great Barrier Reef. Cambridge University Press, Cambridge, 532 pp.CrossRefGoogle Scholar
1997. Reefs as dynamic systems. In (ed.), Life and Death of Coral Reefs. Chapman and Hall, New York, 43–67.CrossRefGoogle Scholar
, , and 1991. The effects of Hurricane Hugo on the reefs and associated environments of St. Croix, U.S. Virgin Islands: a preliminary assessment. Journal of Coastal Research, 8, 33–48.Google Scholar
, , et al. 2003. Climate change, human impacts, and the resilience of coral reefs. Science, 301, 929–933.CrossRefGoogle ScholarPubMed
and 2006a. Wave processes on coral reef flats: implications for reef geomorphology using Australian case studies. Journal of Coastal Research, 22, 209–223.CrossRefGoogle Scholar
and 2006b. Response of reef island shorelines to seasonal climate oscillations: South Maalhosmadulu atoll, Maldives. Journal of Geophysical Research, 111, F01001, 1–12.CrossRefGoogle Scholar
, , and 2006. Wave energy gradients across a Maldivian atoll: Implications for island geomorphology. Geomorphology, 81, 1–17.CrossRefGoogle Scholar
, , , and 2008. Tsunamis as agents of geomorphic change in mid-ocean reef islands. Geomorphology, 95, 361–383.CrossRefGoogle Scholar
and 2002. Fringing reef growth and morphology: a review. Earth-Science Reviews, 57, 255–277.CrossRefGoogle Scholar
, , and 2008. Effects of geomorphological zones, reefs and seasons on coral reef fish communities of Réunion Island, Mascarene Archipelago, SW Indian Ocean. Estuarine, Coastal and Shelf Science, 77, 697–709.CrossRefGoogle Scholar
, and 2000. Hurricanes, coral reefs and rainforests: resistance, ruin and recovery in the Caribbean. Ambio, 29, 106–114.CrossRefGoogle Scholar
, and 1998. Tide effects on wave attenuation and wave set-up on a Caribbean coral reef. Estuarine, Coastal and Shelf Science, 47, 385–393.CrossRefGoogle Scholar
1988. Modern coral reefs of Western Atlantic – new geological perspectives. American Association of Petroleum Geologists Bulletin, 72, 1360–1369.Google Scholar
, and 1982. Core holes in the outer forereef off Carrie Bow Cay, Belize: a key to the Holocene history of the Belizean barrier reef complex. Proceedings Fourth International Coral Reef Symposium, Manilla, 1, 567–574.Google Scholar
, and 2007. The demise of a major Acropora palmata bank-barrier reef off the southeast coast of Barbados. Coral Reefs, 26, 765–773.CrossRefGoogle Scholar
2008. Severe anchor damage to Lobophyllia variegata colonies on the Fujikawa Maru, Truk Lagoon, Micronesia. Coral Reefs, 27, 273.CrossRefGoogle Scholar
, , , and 2003. Rivers, runoff, and reefs. Global Planetary Change, 39, 191–199.CrossRefGoogle Scholar
, and 1970. Facies geometries within Pleistocene reefs of Barbados, West Indies. American Association of Petroleum Geologists Bulletin, 54, 1899–1917.Google Scholar
2005. History of Indo-Pacific coral reef systems since the last glaciation: development patterns and controlling factors. Earth-Science Reviews, 71, 1–75.CrossRefGoogle Scholar
2007. A clear human footprint in the coral reefs of the Caribbean. Proceedings of the Royal Society B, doi:10.1098, 1–7.
1986. The Acanthaster phenomenon. Oceanography and Marine Biology Annual Review, 24, 379–480.Google Scholar
and 1985. Reef response to se level rise: keep up, catch up or give up. Proceedings of the 5th International Coral Reef Congress, Tahiti, 3, 105–110.Google Scholar
1997. Diversity and distribution of reef organisms. In (ed.), Life and Death of Coral Reefs. Chapman and Hall, New York, pp. 298–353.CrossRefGoogle Scholar
2001. Storm-induced coral rubble deposition: Pleistocene records of natural reef disturbance and community response. Coral Reefs, 20, 171–183.CrossRefGoogle Scholar
and 2007. Coral-gravel storm ridges: examples from the tropical Pacific and Caribbean. Proceedings Coastal Sediments ‘07, ASCE, pp. 572–583.CrossRefGoogle Scholar
, 1999. Paradise lost: how marine science failed the world's coral reefs. Marine and Freshwater Research, 50, 831–837.CrossRefGoogle Scholar
1993. The geological effects of hurricanes on coral reefs and the interpretation of storm deposits. Coral Reefs, 12, 203–221.CrossRefGoogle Scholar
and 2004. A revised morpho- and chronostratigraphy of the Late and Middle Pleistocene coral reef terraces on Southern Barbados (West Indies). Earth-Science Reviews, 64, 157–187.CrossRefGoogle Scholar
and 1999. Coastal hazards and associated management issues on South Pacific Islands. Ocean and Coastal Management, 42, 523–554.CrossRefGoogle Scholar
and 2000. The health and future of coral reef systems. Ocean and Coastal Management, 43, 657–688.CrossRefGoogle Scholar
, , and 2008. The role of porosity in discriminating between tsunami and hurricane emplacement of boulders – A case study from the Lesser Antilles, southern Caribbean. Earth and Planetary Science Letters, 268, 384–396.CrossRefGoogle Scholar
and 2008. The relative contribution of processes driving variability in flow, shear, and turbidity over a fringing coral reef: West Maui, Hawaii. Estuarine, Coastal and Shelf Science, 77, 549–564.CrossRefGoogle Scholar
, 1994. Contemporary disturbances to coral communities of the Great Barrier Reef. Journal of Coastal Research, SI 12, Coastal Hazards, 233–252.Google Scholar
, , et al. 1981. Hurricane Allen's impact on Jamaican coral reefs. Science, 214, 749–755.CrossRefGoogle ScholarPubMed
, , and 1999. Atoll reef-island formation and response to sea-level change: West Island, Cocos (Keeling) Islands. Marine Geology, 160, 85–104.CrossRefGoogle Scholar
2008. Reef-island topography and the vulnerability of atolls to sea level rise. Global and Planetary Change, 62, 77–96.CrossRefGoogle Scholar
, , , , , , and Chikamori, M. 2007. Atoll island vulnerability to flooding and inundation revealed by historical reconstruction: Fongafale islet, Funafuti Atoll, Tuvalu. Global and Planetary Change, 57, 407–416.CrossRefGoogle Scholar