[en] Observations on the phytoplankton biomass. primary production and composition of a French Polynesian barrier reef, following the passage of cyclone Wasa in December 199I. led to outline two effects: a transient washout of the lagoonal waters replaced by oceanic ones, and an increase in phytoplankton biomass and primary production together with a predominance of diatoms over other phytoplankton classes. These results are compared and discussed with the few previous studies either concerning the same reef or other tropical reefs. The increase in biomass and primary production, although less marked than in other areas, may be related to nutrient enrichment either from terrestrial run-off or resuspended sediments The predominance of diatoms seems to be a general pattern which can be related to higher growth rates of diatoms compared to other phytoplankters. thus allowing diatoms to take advantage of the nutrient enrichment in the first place. The phytoplankton increase is frequently followed by a bloom of benthic macroalgae. This micro-and macroalgal development may prevent the loss of dissolved nutrients out of the coral reef ecosystem.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Delesalle, Bruno; Centre National de la Recherche Scientifique - CNRS
Pichon, Michel; Australian Institute of Marine Science
Frankignoulle, Michel; Université de Liège - ULiège
Gattuso, Jean-Pierre; Centre National de la Recherche Scientifique - CNRS
Language :
English
Title :
Effects of a cyclone on coral reef phytplankton biomass, primary production and composition (Moorea Island, French Polynesia)
Charpy, L. (1985) Distribution and composition of particulate organic matter in the lagoon of Tikehau (Tuamotu Archipelago, French Polynesia). In Proceedings of the 5th International Coral Reef Congress, Tahiti, 3, pp. 353-358.
Delesalle, B. (1990) Ecologie du phytoplancton des lagons de Polynésie française. Thèse de Doctorat, Ecole Pratique des Hautes Etudes. Paris, 214 pp.
Delesalle, B. and Soumia, A. (1992) Residence time of water and phytoplankton biomass in coral reef lagoons. Cont. Shelf Res., 12, 939-949.
Furnas, M.J. (1989) Cyclonic disturbance and a phytoplankton bloom in a tropical shelf ecosystem. In Okaichi, T., Anderson, D.M. and Nemoto, T. (eds). Red Tides: Biology, Environmental Science and Toxicology. Elsevier, New York, pp. 273-276.
Furnas, M.J. (1990) In situ growth rates of marine phytoplankton: Approaches to measurement, community and species growth rates. J. Plankton Res., 12, 1117-1151.
Furnas, M.J. (1991) Net in situ growth rates of phytoplankton in an oligotrophic, tropical shelf ecosystem. Limnol. Oceanogr., 36, 13-29.
Furnas, M.J. and Mitchell, A.W. (1988) Shelf-scale estimates of phytoplankton primary production in the Great Barrier Reef. In Proceedings of the 6th International Coral Reef Symposium, Australia, 2, pp. 557-562.
Gattuso, J.-P., Pichon, M., Delesalle, B. and Frankignoulle, M. (1993) Community metabolism and air-sea CO-. fluxes in a coral reef ecosystem (Moorea, French Polynesia). Mar. Ecol. Prog. Ser., 96, 259-267.
Glynn, P.W., Almodovar, L.R. and Gonzalez, J.G. (1964) Effects of hurricane Edith on manne life in La Parguera, Puerto Rico. Caribb. J. Sei. 4. 335-345.
Harmelin-Vivien, M. (1993) The effects of storms and cyclones on coral reefs: A review. J. Coastal Res., in press.
Hopcroft, R.R. and Roff, J.C. (1990) Phytoplankton size fractions in a tropical neritic ecosystem near Kingston. Jamaica. J. Plankton Res., 12. 1069-1088.
Legendre, L., Demers, S., Delesalle, B. and Hamois, C. (1988) Biomass and photosynthetic activity of phototrophic picoplankton in coral reef waters (Moorea Island. French Polynesia). Mar. Ecol. Prog. Ser. 47. 153-160.
Ricard, M. (1980) Diminution de la production primaire du lagon de Tiahura (île de Moorea. Polynésie française) sous l'influence de la pollution liée à l'exploitation de sables coralliens. Cah. Indo-Pacif. 2. 73-90.
Sandstrom, M.W (1986) Biochemical effects of cyclone Winifred In Dutton, E.M. (ed.). The Offshore Effects of Cyclone Winifred. Proceedings of the Great Barrier Reef Marine Park A uthority Workshop. Townsville, Workshop Series. 7, p. 46.
Sournia, A. and Ricard, M. (1976) Phytoplankton and its contribution to primary productivity in two coral reef areas of French Polynesia. J Exp. Mar. Biol. Ecol. 21. 129-140.
Walsh, W.J (1983) Stability of a coral reef fish community following a catastrophic storm. Coral Reefs. 2. 49-63.
Webber, D.F., Webber, M.K. and Roff, J.C. (1992) Effects of flood waters on the planktonic community of the Hellshire coast. Southeast Jamaica. Btotropica. 24. 362-374.
Yentsch, C S and Menzel, D.W. (1963) A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence. Deep-Sea Res. 10. 221-231.
