Zooplankton abundance and grazing at Davies Reef, Great Barrier Reef, Australia
Abstract
Zooplankton abundance and grazing on autotrophic and heterotrophic particulate matter were measured along a transect across Davis Reef (18°5′S; 147°39′E) and in the back-reef lagoon over tidal and diel cycles during austral winter (August 1984). Zooplankton entering the reef from the surrounding shelf waters decreased in abundance over the reef flat, presumably because of predation. Within the reef lagoon, maximum daytime densities of pelagic copepods occurred during high water, suggesting an external input. At night, water-column zooplankton biomass increased by a factor of 2 to 3 due to the emergence of demersal reef zooplankton. Zooplankton grazing rates on heterotrophic particulate matter (bacteria + detritus and Protozoa) compared to phytoplankton were higher on the reef flat than on the fore-reef or lagoon. Within the lagoon, zooplankton grazing rates on heterotrophic material were maximum during high water, coincident with maximum tidal concentrations of particulate organic carbon. The combined demersal and pelagic zooplankton community were often able to crop 30% of the daily primary production by >2µm phytoplankton. However, >50% of phytoplankton biomass was in cells <2µm, presumably unavailable to these zooplankton. Our particulate production and ingestion measurements, together with zooplankton carbon demand extrapolated from respiration estimates, suggest that the zooplankton community of Davies Reef derives much of its nutrition from detritus.
Keywords
Phytoplankton Detritus Particulate Organic Carbon Great Barrier Reef Zooplankton CommunityPreview
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Literature cited
- Allan, J. D., Richman, S., Heinle, D. R., Huff, R. (1977). Grazing in juvenile stages of some estuarine calanoid copepods. Mar. Biol. 43: 317–331Google Scholar
- Alldredge, A. L. (1981). The impact of appendicularian grazing on natural food concentrations in situ. Limnol. Oceanogr. 26: 247–257Google Scholar
- Alldredge, A. L., King, J. M. (1977). Distribution, abundance, and substrate preferences of demersal reef zooplankton at Lizard Island Lagoon, Great Barrier Reef. Mar. Biol. 41: 317–333Google Scholar
- Berk, S. G. Brownlee, D. C., Heinle, D. R., Kling, H. J., Colwell, R. R. (1977). Ciliates as a food source for marine planktonic copepods. Microb. Ecol. 4: 27–40Google Scholar
- Boak, A. C., Goulder, R. (1983). Bacterioplankton in the diet of the calanoid copepodEurythemora sp. in the Humber Esutary. Mar. Biol. 73: 139–149Google Scholar
- Conover, R. J. (1968). Zooplankton — life in a nutritionally dilute environment. Am. Zool. 8: 107–118Google Scholar
- Dagg, M. J. (1985). The effects of food limitation on diel migratory behavior in marine zooplankton. Arch. Hydrobiol. (Beih. Ergebn. Limnol.) 21: 247–255Google Scholar
- Daro, M. H. (1978). A simplified14C method for grazing measurements on natural planktonic populations. Helgoländer wiss. Meeresunters. 31: 241–248Google Scholar
- Ducklow, H. W. (1989). The biomass, production and fate of bacteria in coral reefs. In: Dubinsky, Z. (ed.) Coral reefs. Springer-Verlag, Heidelberg (in press)Google Scholar
- Ducklow, H. W., Mitchell, R. (1979). Composition of mucus released by reef coelenterates. Limnol. Oceanogr. 24: 706–714Google Scholar
- Emery, A. R. (1968). Preliminary observation on coral reef plankton. Limnol. Oceanogr. 13: 293–303Google Scholar
- Eppley, R. W. (1972). Temperature and phytoplankton growth in the sea. Fish. Bull. U.S. 70: 1063–1085Google Scholar
- Fitzwater, S. E., Knauer, G. A., Martin, J. H. (1982). Metal contamination and its effect on primary production measurements. Limnol. Oceanogr. 27: 544–551Google Scholar
- Flood, P. R. (1978). Filter characteristics of appendicularian food catching nets. Experientia 34: 173–175Google Scholar
- Frost, B. W. (1972). Effects of size and concentration of food particles on the feeding behavior of the marine planktonic copepodCalanus pacificus. Limnol. Oceanogr. 17: 805–815Google Scholar
- Fuhrman, J. A., Azam, F. (1982). Thymidine incorporation as a measure of heterotrophic bacterioplankton production in marine surface waters: evaluation and field results. Mar. Biol. 66: 109–120Google Scholar
- Furnas, M. J., Mitchell, A. W., Gilmartin, M., Revelante, N. (in preparation). Phytoplankton biomass and primary production in semi-enclosed reef lagoons of the central Great Barrier Reef, Australia.Google Scholar
- Gerber, R. P., Gerber, M. B. (1979). Ingestion of natural particulate organic matter and subsequent assimilation, respiration and growth by tropical lagoon zooplankton. Mar. Biol. 52: 33–43Google Scholar
- Gerber, R. P., Marshall, N. (1974). Ingestion of detritus by the lagoon pelagic community at Enewetok Atoll. Limnol. Oceanogr. 19: 815–824Google Scholar
- Gerber, R. P., Marshall, N. (1982). Characterization of the suspended particulate organic matter and feeding by the lagoon zooplankton at Enewetok Atoll. Bull. mar. Sci. 32: 290–300Google Scholar
- Glynn, P. W. (1973). Ecology of a Caribbean coral reef. ThePorites reef-flat biotope: Part II. Plankton community with evidence for depletion. Mar. Biol. 22: 1–21Google Scholar
- Goldman, B., Talbot, L. H. (1976). Aspects of the ecology of coral reef fishes. In: Jones, O. A., Endean, R. (eds.) Biology and geology of coral reefs. Vol. 2. Academic Press, New York, p. 125–154Google Scholar
- Gottfried, M., Roman, M. R. (1983). Ingestion and incorporation of coral-mucus detritus by reef zooplankton. Mar. Biol. 72: 211–218Google Scholar
- Hamner, W. M., Jones, M. S., Carleton, J. H., Hauri, I. R., Williams, D. McB. (1988). Zooplankton, planktivorous fish, and water currents on a windward reef face: Great Barrier Reef, Australia. Bull. mar. Sci. 42: 459–479Google Scholar
- Hanson, R. B., Alvarez-Ossorio, M. T., Cal. R., Campos, M. J., Roman, M. R., Santiago, G., Varela, M., Yoder, J. A. (1986). Plankton response following a spring upwelling event in the Ría de Arosa, Spain. Mar. Ecol. Prog. Ser. 32: 101–113Google Scholar
- Hatcher, B. G. (1983). The role of detritus in the metabolism and secondary production of coral reef ecosystems. In: Baker, J. T., Carter, R. M., Sammarco, P. W., Stark, K. P. (eds.) Proceedings of the Inaugural Great Barrier Reef Conference. Townsville, James Cook University Press, p. 317–325Google Scholar
- Hitchcock, G. L. (1986). Methodological aspects of time-course measurements of14C fixation in marine phytoplankton. J. exp. mar. Biol. Ecol. 95: 233–243Google Scholar
- Hobson, E. S., Chess, J. R. (1979). Zooplankters that emerge from the lagoon floor at night at Kure and Midway Atolls, Hawaii. Fish. Bull. U.S. 77: 275–279Google Scholar
- Hollibaugh, J. T., Fuhrman, J. A., Azam, F. (1980). Radioactive labelling of natural assemblages of bacterioplankton for use in trophic studies. Limnol. Oceanogr. 25: 172–181Google Scholar
- Hopkinson, C. S., Sherr, B. F., Ducklow, H. W. (1987). Microbial regeneration of ammonium in the water column of Davies Reef, Australia. Mar. Ecol. Prog. Ser. 41: 147–153Google Scholar
- Houde, E. D., Lovdal, J. A. (1985). Patterns of variability of ichthyoplankton occurrence and abundance in Biscayne Bay, Florida. Estuar., cstl Shelf Sci. 20: 79–104Google Scholar
- Huntley, M., Brooks, E. R. (1982). Effects of age and food availability on diel vertical migration ofCalanus pacificus. Mar. Biol. 71: 23–31Google Scholar
- Ikeda, T. (1974). Nutritional ecology of marine zooplankton. Mem. Fac. Fish. Hokkaido Univ. 22: 1–97Google Scholar
- Ikeda, T. (1977). Feeding rates of planktonic copepods from a tropical sea. J. exp. mar. Biol. Ecol. 29: 263–277Google Scholar
- Johannes, R. E. (1967). Ecology of organic aggregates in the vicinity of a coral reef. Limnol. Oceanogr. 12: 189–195Google Scholar
- Kiørboe, T., Munk, P., Richardson, K., Christensen, V., Paulsen, H. (1988). Plankton dynamics and larval herring growth, drift and survival in a frontal area. Mar. Ecol. Prog. Ser. 44: 205–219Google Scholar
- Kinsey, D. W. (1972). Preliminary observations on community metabolism and primary productivity of the pseudo-atoll reef at One Tree Island. Proc. 1st int. Symp. coral Reefs 1: 13–32. [Mukudan, C., Pillai, C. S. (eds.) Marine Biological Association of India, Ernakulum, India]Google Scholar
- Lewis, J. B. (1976). Experimental tests of suspension feeding in Atlantic reef corals. Mar. Biol. 36: 147–150Google Scholar
- Lewis, J. B. (1981). Coral reef ecosystems. In: Longhurst, A. R. (ed.) Analysis of marine ecosystems, Academic Press, New York, p. 127–158Google Scholar
- Marshall, N. (1965). Detritus over the reef and its potential contribution to adjacent waters of Enewetok Atoll. Ecology 46: 343–344Google Scholar
- Marshall, N. (1968). Observations on organic aggregates in the vicinity of coral reefs. Mar. Biol. 2: 50–53Google Scholar
- Mullin, M. M., Roman, M. R. (1986). In situ feeding of a schooling mysid,Anisomysis sp., on Davies Reef. Bull. mar. Sci. 39: 623–629Google Scholar
- Muscatine, L., Porter, J. W. (1977). Reef corals: mutualistic symbiosis adapted to nutrient-poor environments. BioSci. 27: 454–460Google Scholar
- Nival, P., Nival, S. (1976). Particle retention efficiencies of a herbivorous copepod,Acartia clausi (adult and copepodite stages): effects on grazing. Limnol. Oceanogr. 21: 24–38Google Scholar
- Parsons, T. R., Takahashi, M., Hargrave, B. (1979). Biological oceanographic processes, Permagon Press, New YorkGoogle Scholar
- Petipa, T. S. (1958). The diurnal feeding rhythm of the copepod crustacean,Acartia clausi. Dokl. Akad. Nauk SSSR 120: 435–437Google Scholar
- Pickard, G. L. (1986). Effects of wind and tide on upper-layer currents at Davies Reef, Great Barrier Reef, during MECOR (July–August 1984). Aust. J. mar. Freshwat. Res. 37: 545–565Google Scholar
- Porter, J. W. (1974). Zooplankton feeding by the Caribbean reefbuilding coralMonastrea cavernosa. Proc. 2nd int. Symp. coral Reefs 2: 111–125 [Cameron, A. M., et al. (eds.) The Great Barrier Reef Committee, Brisbane]Google Scholar
- Randall, J. E. (1967). Food habits of the reef fishes of the West Indies. Stud. trop. Oceanogr., Miami 5: 665–847Google Scholar
- Richman, S., Heinle, D. R., Huff, R. (1977). Grazing by adult estuarine calanoid copepods of the Chesapeake Bay. Mar. Biol. 42: 69–84Google Scholar
- Richman, S., Loya, Y., Slobodkin, L. B. (1975). The rate of mucus production by corals and its assimilation by the coral reef copepod,Acartia negligens. Limnol. Oceanogr. 20: 918–923Google Scholar
- Roman, M. R. (1977). Feeding of the copepodAcartia tonsa on the diatomNitzschia closterium and brown algae (Fucus vesiculosus) detritus. Mar. Biol. 42: 149–155Google Scholar
- Roman, M. R. (1984a). Utilization of detritus by the copepod,Acartia tonsa. Limnol. Oceanogr. 29: 949–959Google Scholar
- Roman, M. R. (1984b). Ingestion of detritus and microheterotrophs by pelagic marine zooplankton. Bull. mar. Sci. 35: 477–494Google Scholar
- Roman, M. R., Ashton, K. A., Gauzens, A. L. (1988a). Day/night differences in the grazing impact of marine copepods. Hydrobiologia 167/168: 21–30Google Scholar
- Roman, M. R., Ducklow, H. W., Fuhrman, J. A., Garside, C., Glibert, P. M., Malone, T. C., McManus, G. B. (1988b). Production, consumption and nutrient cycling in a laboratory mesocosm. Mar. Ecol. Prog. Ser. 42: 39–52Google Scholar
- Roman, M. R., Gauzens, A. L., Cowles, T. J. (1985). Temporal and spatial changes in epipelagic microzooplankton and mesozooplankton biomass in warm-core Gulf Stream ring 82-B. Deep-Sea Res. 32: 1007–1022Google Scholar
- Roman, M. R., Rublee, P. A. (1981). A method to determinein situ zooplankton grazing rates on natural particle assemblages. Mar. Biol. 65: 303–309Google Scholar
- Roman, M. R., Yentsch, C. S., Gauzens, A. L., Phinney, D. A. (1986). Grazer control of the fine-scale distribution of phytoplankton in warm-core Gulf Stream rings. J. mar. Res. 44: 795–813Google Scholar
- Sale, P. F., McWilliam, P. S., Anderson, D. T. (1976). Composition of the near-reef zooplankton at Heron Reef, Great Barrier Reef. Mar. Biol. 34: 59–66Google Scholar
- Sammarco, P. W., Crenshaw, H. (1984). Plankton community dynamics of the central Great Barrier Reef Lagoon: analysis of data of Ikedaet al. Mar. Biol. 82: 167–180Google Scholar
- Sorokin, Y. I. (1973). Microbiological aspects of the productivity of coral reefs. In: Jones, O. A., Endean, R. (eds.) Biology and geology of coral reefs. Vol. 1. Academic Press, New York, p. 17–45Google Scholar
- Steeman Nielsen, E. (1952). The use of radioactive carbon (14C) for measuring production in the sea. J. Cons. perm. int. Explor. Mer. 18: 117–140Google Scholar
- Stoecker, D. K., Egloff, D. A. (1987). Predation byAcartia tonsa Dana on planktonic ciliates and rotifers. J. exp. mar. Biol. Ecol. 110: 53–68Google Scholar
- Strickland, J. D. H., Parsons, T. R. (1972). A practical handbook of seawater analysis. 2nd ed. Bull. Fish. Res. Bd Can. 167: 1–310Google Scholar
- Williams, R., Robins, D. B. (1982). Effects of preservation on wet weight, dry weight, nitrogen and carbon contents ofCalanus helgolandicus (Crustacea: Copepoda). Mar. Biol. 71: 271–281Google Scholar