Abstract
Because the precipitation of calcium carbonate results in the sequestering of carbon, it frequently has been thought that coral reefs functions as sinks of global atmospheric CO2. However, the precipitation of calcium carbonate is accompanied by a shift of pH that results in the release of CO2. This release of CO2 is less in buffered sea water than fresh water systems; nevertheless, coral reefs are sources, not sinks, of atmospheric carbon. Using estimated rates of coral reef carbonate production, we compute that coral reefs release 0.02 to 0.08 Gt C as CO2 annually. This is approximately 0.4% to 1.4% of the current anthropogenic CO2 production due to fossil fuel combustion.
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References
Adams RM, Rosenzweig C, Peart RM, Ritchie JT, McCarl BA, Glyer JD, Curry RB, Jones JW, Boote KJ, Allen LH Jr (1990) Global climate change and US agriculture. Nature 345:219–224
Adey WH (1978) Coral reef morphogenesis: a multidimensional model. Science 202:831–837
Arrhenius S (1896) On the influence of carbonic acid in the air upon the temperature of the ground. Philos Mag J Sci 41:237–276
Berner RA, Lasaga AC, Garrels RM (1983) The carbonate-silicate geochemical cycle and its effect on atmospheric carbon dioxide over the past 100 million years. Am J Sci 283:641–683
Broecker WS, Takahashi T (1966) Calcium carbonate precipitation on the Bahama Banks. J Geophys Res 71:1575–1602
Broecker WS, Takahashi T, Simpson HJ, Peng T-H (1979) Fate of fossil fuel carbon dioxide and the global carbon budget. Science 206:409–418
Brown J, Colling A, Park D, Phillips J, Roherty D, Wright J (1989) Seawater: its composition, properties and behavior. Pergamon, Oxford, pp 1–165
Buddemeier RW, Smith SV (1988) Coral reef growth in an era of rapidly rising sea level: predictions and suggestions for long-term research. Coral Reefs 7:51–56
Chappell J, Polach H (1990) Post-glacial sea-level rise from a coral record at Huon Peninsula, Papua New Guinea. Nature 349:147–149
Crossland CJ, Hatcher BG, Smith SV (1991) Role of coral reefs in global ocean production. Coral Reefs 10:55–64
Davies PJ, Marshall JF, Hopley D (1985) Relationships between reef growth and sea level in the Great Barrier Reef. Proc 5th Int Coral Reef Symp 3:95–103
Fairbanks RG (1989) A 17,000-year glacio-eustatic sea level record: influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation. Nature 342:637–642
Hubbard DK, Miller AI, Scaturo D (1990) Production and cycling of calcium carbonate in a shelf-edge reef system (St. Croix, US Virgin Islands): Applications to the nature of reef systems in the fossil record. J Sediment Petrol 60:335–360
Kinsey D, Hopley D (1991) The significance of coral reefs as global carbon sinks — response to global greenhouse. Palaeogeogr Palaeoclimatol Palaeoecol 89:363–377
Lashof DA, Ahuja DR (1990) Relative contributions of greenhouse gas emissions to global warming. Nature 344:529–531
Marshall HG, Walker JCG, Kuhn WR (1988) Long-term climate change and the geochemical cycle of carbon. J Geophys Res 93:701–801
Skirrow G (1975) The dissolved gases—carbon dioxide. In: Riley JP, Skirrow G (eds) Chemical oceanography, vol 2, 2nd edn. Academic Press, London, pp 1–192
Smith SV (1973) Carbon dioxide dynamics: a record of organic carbon production, respiration, and calcification in the Eniwetok reef flat community. Limnol Oceanogr 18:106–120
Smith SV (1978) Coral-reef area and contributions of reefs to processes and resources of the world's oceans. Nature 273:225–226
Smith SV (1983) Coral reef calcification. In: Barnes DJ (ed) Perspectives on coral reefs. Australian Institute of Marine Science, Manuka, Australia, pp 240–247
Smith SV (1985) Physical, chemical and biological characteristics of CO2 gas flux across the air water interface. Plant Cell Environ 8:387–398
Smith SV, Kinsey DW (1976) Clacium carbonate production, coral reef growth, and sea level change. Science 194:937–939
Smith SV, Veeh HH (1989) Mass balance of biogeochemically active materials (C, N, P) in a hypersaline gulf. Estuarine, Coastal Shelf Sci 29:195–215
Stumm W, Morgan JJ (1981) Aquatic chemistry, 2nd edn. Wiley, New York, pp 1–780
Taylor AH, Watson AJ, Ainsworth M, Robertson JE, Turner DR (1991) A modelling investigation of the role of phytoplankton in the balance of carbon at the surface of the North Atlantic. Global Biogeochem Cycles 5:151–171
Tans PP, Fung IY, Takahashi T (1990) Observational constraints on the global atmospheric CO2 budget. Science 247:1431–1438
Volk T, Bacastow R (1989) The changing patterns of ΔpCO2 between ocean and atmosphere. Global Biogeochem Cycles 3:179–189
Watson AJ, Robinson C, Robinson JE, leB. Williams PJ, Fasham MJR (1991) Spatial variability in the sink for atmospheric carbon dioxide in the North Atlantic. Nature 350:50–53
Williamson P, Holligan PM (1990) Ocean productivity and climate change. Trends Ecol Evol 9:299–303
Wollast R, Garrels RM, Mackenzie FT (1980) Calcite-seawater reactions in ocean surface waters. J Sci 280:831–848
World Resources Institute (1990) World Resources: 1990–1991. Oxford University Press, New York, pp 1–383
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Ware, J.R., Smith, S.V. & Reaka-Kudla, M.L. Coral reefs: sources or sinks of atmospheric CO2?. Coral Reefs 11, 127–130 (1992). https://doi.org/10.1007/BF00255465
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DOI: https://doi.org/10.1007/BF00255465