Air-sea CO2 flux; Algal-dominated; Calcification; Community metabolism; Coral reef; Primary production
Abstract :
[en] Community metabolism and air-sea carbon dioxide (CO2) fluxes were investigated in July 1992 on a fringing reef at Moorea (French Polynesia). The benthic community was dominated by macroalgae (85% substratum cover) and comprised of Phaeophyceae Padina tenuis (Bory), Turbinaria ornata (Turner) J. Agardh, and Hydroclathrus clathratus Bory (Howe); Chlorophyta Halimeda incrassata f. ovata J. Agardh (Howe); and Ventricaria ventricosa J. Agardh (Olsen et West), as well as several Rhodophyta (Actinotrichia fragilis Forskal (Borgesen) and several species of encrusting coralline algae). Algal biomass was 171 g dry weight·m-2. Community gross production (P(g)), respiration (R), and net calcification (G) were measured in an open top enclosure. P(g) and R were respectively 248 and 240 mmol CO2·m-2·d-1, and there was a slight net dissolution of CaCO3 (0.8 mmol·m-2·d-1). This site was a sink for atmospheric CO2 (10 ± 4 mmol CO2·m-2·d-1), and the analysis of data from the literature suggests that this is a general feature of algal-dominated reefs. Measurement of air-sea CO2 fluxes in open water close to the enclosure demonstrated that changes in small-scale hydrodynamics can lead to misleading conclusions. Net CO2 evasion to the atmosphere was measured on the fringing reef due to changes in the current pattern that drove water from the barrier reef (a CO2 source) to the study site.
Barnes, D. J. 1988. Seasonality in community productivity and calcification at Davies Reef, Central Great Barrier Reef. In Choat J. H. et al. [Ed.] Proc. 6th Int. Coral Reef Symp. Townsville, Australia, Vol. 2, pp. 521-7.
Barnes, D. J. & Devereux, M. J. 1984. Productivity and calcification on a coral reel: a survey using pH and oxygen electrode techniques. J. Exp. Mar. Biol. Ecol. 79:213-31.
Barnes, D. J. & Lazar, B. 1993. Metabolic performance of a shallow reef patch near Eilat on the Red Sea. J. Exp. Mar. Biol. Ecol. 174:1-13.
Berger, W. H. 1982. Increase of carbon dioxide in the atmosphere during deglaciation: the coral reef hypothesis. Naturwissenschaften 69:87-88.
Bouchon, C. 1985. Quantitative study of scleractinian coral communities of Tiahura reef (Moorea Island, French Polynesia). In Proc. 5th Int. Coral Reef Congr. Gabrié, C. & Hurmelin-Vivien, M. [Eds.], Moonea, French Polynesia, Vol. 6, pp. 279-84.
Buddemeier, R. W. 1995. Coral Reef Carbon Cycle Research: Conceptual and Experimental Design. Kansas Geological Survey Open-File Report 95-56b, 12 pp.
_ 1996. Coral reefs and carbon dioxide. Science 271:1298-9.
Charpy-Roubaud, C. & Sournia, A. 1990. The comparative estimation of phytoplanktonic, microphytobenthic and macrophytobenthic primary production in the oceans. Mar. Microb. Food Webs 4:31-57.
Connor, J. L. & Adey, W. H. 1977. The benthic algal composition, standing crop, and productivity of a Caribbean algal ridge. Atoll Res. Bull 211:1-40.
Crossland, C. J., Hatcher, B. G. & Smith, S. V. 1991. Role of coral reefs in global ocean production. Coral Reefs 10:55-64.
Done, T. J. 1992a. Phase shifts in coral reef communities and their ecological significance. Hydrobiolagia 247:121-32.
_ 1992b. Effects of tropical cyclone waves on ecological and geomorphological structures on the Great Barrier Reef. Cont. Shelf Res. 12:859-72.
Frankignoulle, M. 1988. Field measurements of air-sea CO2 exchange. Limnol. Oceanogr. 33:313-22.
Frankignoulle, M., Canon, C. & Gattuso, J.-P. 1994. Marine calcification as a source of carbon dioxide - positive feedback of increasing atmospheric CO2. Limnol. Oceanogr. 39:458-62.
Frankignoulle, M., Gattuso, J.-P., Biondo, R., Bourge, I., Copin-Montégut, G. & Pichon, M. 1996. Carbon fluxes in coral reefs. II. Eulerian study of inorganic carbon dynamics and measurement of air-sea CO2 exchanges. Mar. Ecol. Prog. Ser. 145:123-32.
Gao, K. & McKinley, K. R. 1994. Use of macroalgae for marine biomass production and CO2 remediation - a review. J. Appl. Phycol. 6:45-60.
Gattuso, J.-P., Frankignoulle, M., Smith, S. V., Ware, J. R. & Wollast, R. 1996a. Coral reefs and carbon dioxide. Science 271: 1298.
Gattuso, J.-P., Pichon, M., Delesalle, B., Canon, C. & Frankignoulle, M. 1996b. Carbon fluxes in coral reefs. I. Lagrangian measurement of community metabolism and resulting air-sea CO2 disequilibrium. Mar. Ecol Prog. Sci: 145:109-21.
Gattuso, J.-P., Pichon, M., Delesalle, B. & Frankignoulle, M. 1993. Community metabolism and air-sea CO2 fluxes in a coral reef ecosystem (Moorea, French Polynesia). Mar. Ecol. Prog. Ser. 96:259-67.
Gattuso, J.-P., Pichon, M. & Frankignoulle, M. 1995. Biological control of air-sea CO2 fluxes: effect of photosynthetic and calcifying marine organisms and ecosystems. Mar. Ecol. Prog. Ser. 129:307-12.
Hughes, T. P. 1994. Catastrophes, phase shifts, and large-scale degradation of a Caribbean coral reef. Science 265:1547-51.
Johnson, C., Klumpp, D., Field, J. & Bradbury, R. 1995. Carbon flux on coral reefs: effects of large shifts in community structure. Mar. Ecol. Progr. Ser. 126:123-43.
Kayanne, H. 1996. Coral reefs and carbon dioxide - reply. Science 271:1299-300.
Kayanne, H., Suzuki, A. & Saito, H. 1995. Diurnal changes in the partial pressure of carbon dioxide in coral reef water. Science 269:214-16.
Kinsey, D. W. 1978. Productivity and calcification estimates using slack-water periods and field enclosures. In Stoddart, D. R. & Johannes, R. E. [Eds.] Coral Reefs Research Methods. Unesco, Paris, pp. 439-68.
_ 1979. Carbon turnover and accumulation by coral reefs. Ph.D. thesis. University of Hawaii, Honolulu, Hawaii, 260 pp.
_ 1988. Coral reef system response to some natural and anthropogenic stresses. Galaxea 7:113-28.
Kraines, S., Suzuki, Y., Yamada, K. & Komiyama, H. 1997. Separating biological and physical changes in dissolved oxygen concentration in a coral reef. Limnol. Oceanogr. 41:1790-9.
Lapointe, B. E. 1989. Macroalgal production and nutrient relations in oligotrophic areas of Florida Bay. Bull. Mar. Sci. 44: 312-23.
Larkum, A. W. D. 1983. The primary productivity of plant communities on coral reefs. In Barnes, D. J. [Ed.] Perspectives on Coral Reefs. Australian Institute of Marine Science, Townsville, pp. 221-230.
Liss, P. S. & Merlivat, L. 1986. Air-sea gas exchange rates: introduction and synthesis. In Buat-Menard, P. [Ed.] The Role of Air-sea Exchange in Geochemical Cycling. D. Reidel Publishing Company, Dordrecht, pp. 113-27.
Littler, M. M., Taylor, P. R. & Littler, D. S. 1989. Complex interactions in the control of coral zonation on a Caribbean reef flat. Oecologia 80:331-40.
Millero, F. J. & Poisson, A. 1981. International one atmosphere equation of state of seawater. Deep-Sea Res. 28A:625-629.
Naim, O. 1993. Seasonal responses of a fringing reef community to eutrophication (Reunion Island, Western Indian Ocean). Mar. Ecol. Prog. Ser. 99:137-51.
Opdyke, B. N. & Walker, J. C. G. 1992. Return of the coral reef hypothesis: basin to shelf partitioning of CaCO3 and its effect on atmospheric CO2. Geology 20:733-6.
Payri, C. E. 1987a. Variabilité spatiale et temporelle de la communauté des macrophytes des récifs coralliens de Mooréa (Polynésie française). Contribution des algues au métabolisme du carbone de l'écosystème récifal. Thèse de Doctorat d'Etat, Université des Sciences et Techniques du Languedoc, 149 pp.
_ 1987b. Zonation and seasonal variation of the commonest algae on Tihura reef (Moorea Island, French Polynesia). Bot. Mar. 30:141-9.
Peyrot-Clausade, M., Le Campion-Alsumard, T., Hutchings, P., Le Campion, J., Payri, C. & Fontaine, M. C. 1995. Initial bioerosion and bioaccretion on experimental substrates in high island and atoll lagoons (French Polynesia). Oceanol. Acta 18: 531-41.
Pichon, M. 1985. Organic production and calcification in some coral reefs of French Polynesia. In Prof. 5th Int. Coral Reef Congress, Tahiti. Gabrié, C. & Hurmelin-Vivien, M. [Eds.] Moonea, French Polynesia, Vol. 6, pp. 173-77.
Pichon, M. & Morrissey, J. 1985. Premières mesures de bilan métabolique dans l'écosystème récifal de Tulear (Madagascar). C. R. Séances Acad. Sci. Ser. III Sci. Vie 300:99-101.
Smith, S. V. 1973. Carbon dioxide dynamics: a record of organic carbon production, respiration and calcification in the Eniwetok reef flat community. Limnol. Oceanogr. 18:106-20.
_ 1981. Marine macrophytes as a global carbon sink. Science 211:838-40.
_ 1995. Reflections on the Measurement and Significance of Carbon Metabolism on Coral Reefs. Kansas Geological Survey Open-File Report 95-56a, 18 pp.
Smith, S. V. & Buddemeier, R. W. 1992. Global change and coral reef ecosystems. Annu. Rev. Ecol. Syst. 23:89-118.
Smith, S. V. & Key, G. S. 1975. Carbon dioxide and metabolism in marine environments. Limnol. Oceanogr. 20:493-5.
Smith, S. V. & Marsh, J. A., Jr. 1973. Organic carbon production on the windward reef flat of Eniwetok atoll. Limnol. Oceanogr. 18:953-61.
Smith, S. V. & Veeh, H. H. 1989. Mass balance of biogeochemically active materials (C, N, P) in a hypersaline gulf. Estuarine Coastal Shelf Sci. 29:195-215.
Sournia, A. 1976. Oxygen metabolism of a fringing reef in French Polynesia. Helgol. Wiss. Meeresunters. 28:401-10.
Vaugelas, J. de. 1981. Distribution quantitative de la matière organique totale, vivante et détritique dans différents types de sédiments coralliens de Polynésie française. C. R. Séances Acad. Sci. Ser. III Sci. Vie 292:299-302.
Wanninkhof, R. 1992. Relationship between wind speed and gas exchange over the ocean. J. Geophys. Res. 97:7373-82.
Ware, J. R., Smith, S. V. & Reaka-Kudla, M. L. 1992. Coral reefs: sources or sinks of atmospheric CO2? Coral Reefs 11:127-130.
Wolanski, E., Delesalle, B., Dufour, V. & Aubanel, A. 1993. Modeling the fate of pollutants in the Tiahura Lagoon, Moorea, French Polynesia. In 11th Australasian Conference on Coastal and Ocean Engineering. Townsville, Australia, pp. 583-9.
Yamamuro, M., Kayanne, H. & Minagawa, M. 1995. Carbon and nitrogen stable isotopes of primary producers in coral reef ecosystems. Limnol. Oceanogr. 40:617-21.
Zimmerman, R. C., Steller, D. L., Coyer, J. A., Kohrs, D. G. & Alberte, R. S. 1995. Photosynthesis and calcification in Bora Bay: impacts on air/sea flux of CO2. In Proc. Int. Workshop on Carbon Cycling and Coral Reef Metabolism. Hirara, Migako Is., Japan, pp. 86-92.
