Abstract
A Geographic Information System (GIS)-aided flow-tracking technique was adopted to investigate nutrient exchange rates between specific benthic communities and overlying seawater in a fringing reef of Ishigaki Island, subtropical Northwestern Pacific. Net exchange rates of NO3 −, NO2 −, NH4 +, PO4 3−, Total-N and Total-P were estimated from concentration changes along the drogue trajectories, each of which was tracked by the Global Positioning System and plotted on a benthic map to determine the types of benthic habitat over which the drogue had passed. The observed nutrient exchange rates were compared between 5 typical benthic zones (branched-coral (B) and Heliopora communities (H), seaweed-reefrock zone (W), bare sand area (S), and seagrass meadow (G)). The dependence of nutrient exchange rates on nutrient concentrations, physical conditions and benthic characteristics was analyzed by multiple regression analysis with the aid of GIS. The spatial correlation between nutrient exchange rates and benthic characteristics was confirmed, especially for NO3 − and PO4 3−, which were usually absorbed in hydrographically upstream zones B and W and regenerated in downstream zones H and G. NO3 − uptake in zones B and W was concentration-dependent, and the uptake rate coefficient was estimated to be 0.58 and 0.67 m h−1, respectively. Both nutrient uptake in zone W and regeneration in zone H were enhanced in summer. The net regeneration ratio of NO3 −/PO4 3− in zone H in summer ranged 5.2 to 34 (mean, 17.4), which was somewhat higher than previously measured NO3 −/PO4 3− for sediment pore waters around this zone (1.1–8.5). Nutrient exchanges in zone S were relatively small, indicating semi-closed nutrient cycling at the sediment-water interface of this zone. NH4 + efflux from sediments was suggested in zone G. The data suggest that the spatial pattern of nutrient dynamics over the reef flat community was constrained by zonation of benthic biota, and that abiotic factors such as nutrient concentrations and flow rates, influenced nutrient exchange rates only in absorption-dominated communities such as zones B and W.
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References
Andrews, J. C. and H. Müller (1983): Space-time variability of nutrients in a lagoonal patch reef. Limnol. Oceanogr., 28, 215–227.
Atkinson, M. J. (1987): Rates of phosphorus uptake by coral reef flat communities. Limnol. Oceanogr., 32, 426–435.
Atkinson, M. J. and R. W. Bilger (1992): Effects of water velocity on phosphate uptake in coral reef flat communities. Limnol. Oceanogr., 37, 273–279.
Atkinson, M. J. and J. L. Falter (2003): Coral Reefs. p. 40–64. In Biogeochemistry of Marine Systems, ed. by K. D. Black and G. B. Shimmield, Blackwell Publishing, Oxford.
Baird, M. E., M. Roughan, R. W. Brander, J. H. Middleton and G. J. Nippard (2004): Mass-transfer-limited nitrate uptake on a coral reef flat, Warraber Island, Torres Strait, Australia. Coral Reefs, 23, 386–396.
Barnes, D. J. (1983): Profiling coral reef productivity and calcification using pH and oxygen electrodes. J. Exp. Mar. Biol. Ecol., 66, 149–161.
Barnes, D. J. and M. J. Devereux (1984): Productivity and calcification on a coral reef: a survey using pH and oxygen electrode techniques. J. Exp. Mar. Biol. Ecol., 79, 213–231.
Bilger, R. W. and M. J. Atkinson (1995): Effects of nutrient loading on mass-transfer rates to a coral-reef community. Limnol. Oceanogr., 40, 279–289.
Burnett, W. C., H. Bokuniewicz, M. Huettel, W. S. Moore and M. Taniguchi (2003): Groundwater and pore water inputs to the coastal zone. Biogeochemistry, 66, 3–33.
Burris, R. H. (1983): Uptake and assimilation of 15NH4 + by a variety of corals. Mar. Biol., 75, 151–155.
Burton, J. D., T. M. Leatherland and P. S. Liss (1970): The reactivity of dissolved silicon in some natural waters. Limnol. Oceanogr., 15, 473–476.
Bythell, J. C. (1990): Nutrient uptake in the reef-building coral Acropora palmata at natural environmental concentrations. Mar. Ecol. Prog. Ser., 68, 65–69.
Capone, D. G., S. E. Dunham, S. G. Horrigan and L. E. Duguay (1992): Microbial nitrogen transformations in unconsolidated coral reef sediments. Mar. Ecol. Prog. Ser., 80, 75–88.
Charpy, L., C. Charpy-Roubaud and P. Buat (1998): Excess primary production, calcification and nutrient fluxes of a patch reef (Tikehau atoll, French Polynesia). Mar. Ecol. Prog. Ser., 173, 139–147.
Coffroth, M. A. (1990): Mucus sheet formation on poritid coral: an evaluation of coral mucus as a nutrient source on reefs. Mar. Biol., 105, 39–49.
Coles, S. L. and R. Strathmann (1973): Observations on coral mucus “flocs” and their potential trophic significance. Limnol. Oceanogr., 18, 673–678.
Corredor, J. E. and J. Morell (1985): Inorganic nitrogen in coral reef sediments. Mar. Chem., 16, 379–384.
Crossland, C. J. and D. J. Barnes (1983): Dissolved nutrients and organic particles in water flowing over coral reefs at Lizard Island. Aust. J. Mar. Freshw. Res., 34, 835–844.
D’Elia, C. F. (1977): The uptake and release of dissolved phosphorus by reef corals. Limnol. Oceanogr., 22, 301–315.
D’Elia, C. F. (1988): The cycling of essential elements in coral reefs. p. 195–230. In Concepts of Ecosystem Ecology, ed. by L. R. Pomeroy and J. J. Alberts, Springer, New York.
D’Elia, C. F. and W. J. Wiebe (1990): Biogeochemical nutrient cycles in coral-reef ecosystems. p. 49–74. In Coral Reefs, ed. by Z. Dubinsky, Elsevier Science Publishers B.V., Amsterdam.
Diaz, M. C. and K. Rützler (2001): Sponges: An essential component of Carribean coral reefs. Bull. Mar. Sci., 69, 535–546.
Falter, J. L., M. J. Atkinson and M. A. Merrifield (2004): Mass-transfer limitation of nutrient uptake by a wave-dominated reef flat community. Limnol. Oceanogr., 49, 1820–1831.
Grasshoff, K., K. Kremling and M. Ehrhardt (1999): Methods of Seawater Analysis. Wiley, Weinheim.
Harii, S. and H. Kayanne (2003): Larval dispersal, recruitment, and adult distribution of the brooding stony octocoral Heliopora coerulea on Ishigaki Island, southwest Japan. Coral Reefs, 22, 188–196.
Hata, H., S. Kudo, H. Yamano, N. Kurano and H. Kayanne (2002): Organic carbon flux in Shiraho coral reef (Ishigaki Island, Japan). Mar. Ecol. Prog. Ser., 232, 129–140.
Hearn, C. J., M. J. Atkinson and J. L. Falter (2001): A physical derivation of nutrient-uptake rates in coral reefs: effects of roughness and waves. Coral Reefs, 20, 347–356.
Hopkinson, C. S., B. F. Sherr and H. W. Ducklow (1987): Microbial regeneration of ammonium in the water column of Davies Reef, Australia. Mar. Ecol. Prog. Ser., 41, 147–153.
Johannes, R. E., W. J. Wiebe and C. J. Crossland (1983): Three patterns of nutrient flux in a coral reef community. Mar. Ecol. Prog. Ser., 12, 131–136.
Kawahata, H., I. Yukino and A. Suzuki (2000): Terrestrial influences on the Shiraho fringing reef, Ishigaki Island, Japan: high carbon input relative to phosphate. Coral Reefs, 19, 172–178.
Kayanne, H., S. Harii, Y. Ide and F. Akimoto (2002): Recovery of coral populations after the 1998 bleaching on Shiraho Reef, in the southern Ryukyus, NW Pacific. Mar. Ecol. Prog. Ser., 239, 93–103.
Mioche, D. and P. Cuet (1999): Métabolisme du carbone, des carbonates et des sels nutritifs en saison chaude, sur un récif frangeant soumis à une pression anthropique (île de la Réunion, océan Indien). C. R. Acad. Sci. Paris Earth Planet. Sci., 329, 53–59.
Miyajima, T., I. Koike, H. Yamano and H. Iizumi (1998): Accumulation and transport of seagrass-derived organic matter in reef flat sediment of Green Island, Great Barrier Reef. Mar. Ecol. Prog. Ser., 175, 251–259.
Miyajima, T., M. Suzumura, Y. Umezawa and I. Koike (2001): Microbiological nitrogen transformation in carbonate sediments of a coral-reef lagoon and associated seagrass beds. Mar. Ecol. Prog. Ser., 217, 273–286.
Miyajima, T., H. Hata, Y. Umezawa, H. Kayanne and I. Koike (2007): Distribution and partitioning of nitrogen and phosphorus in a fringing reef lagoon of Ishigaki Island, Northwestern Pacific. Mar. Ecol. Prog. Ser. (in press).
Mwashote, B. M. and I. O. Jumba (2002): Quantitative aspects of inorganic nutrient fluxes in the Gazi Bay (Kenya): implications for coastal ecosystems. Mar. Pollut. Bull., 44, 1194–1205.
Nakamori, T., A. Suzuki and Y. Iryu (1992): Water circulation and carbon flux on Shiraho coral reef of the Ryukyu Islands, Japan. Cont. Shelf Res., 12, 951–970.
Odum, H. T. and E. P. Odum (1955): Trophic structure and productivity of a windward coral reef community on Eniwetok Atoll. Ecol. Monogr., 25, 291–320.
Pilson, M. E. and S. B. Betzer (1973): Phosphorus flux across a coral reef. Ecology, 54, 581–588.
Sorokin, Yu. I. (1990): Plankton in the reef ecosystems. p. 291–327. In Coral Reefs, ed. by Z. Dubinsky, Elsevier Science Publishers B.V., Amsterdam.
Sorokin, Yu. I. (1992): Phosphorus metabolism in coral reef communities: exchange between the water column and bottom biotopes. Hydrobiologia, 242, 105–114.
Steven, A. D. L. and M. J. Atkinson (2003): Nutrient uptake by coral-reef microatolls. Coral Reefs, 22, 197–204.
Suzumura, M., T. Miyajima, H. Hata, Y. Umezawa, H. Kayanne and I. Koike (2002): Cycling of phosphorus maintains the production of microphytobenthic communities in carbonate sediments of a coral reef. Limnol. Oceanogr., 47, 771–781.
Tanaka, Y. and H. Kayanne (2006): Species composition of tropical seagrass meadow in relation to multiple physical environmental factors. Ecol. Res., 22, 87–96.
Tanaka, Y., T. Miyajima, I. Koike, T. Hayashibara and H. Ogawa (2006): Translocation and conservation of organic nitrogen within the coral-zooxanthella symbiotic system of Acropora pulchra, as demonstrated by dual-isotope labeling techniques. J. Exp. Mar. Biol. Ecol., 336, 110–119.
Thomas, F. I. M. and M. J. Atkinson (1997): Ammonium uptake by coral reefs: Effects of water velocity and surface roughness on mass transfer. Limnol. Oceanogr., 42, 81–88.
Umezawa, Y., T. Miyajima, H. Kayanne and I. Koike (2002): Significance of groundwater nitrogen discharge into coral reefs at Ishigaki Island, Japan. Coral Reefs, 21, 346–356.
Wafar, M., S. Wafar and J. J. David (1990): Nitrification in reef corals. Limnol. Oceanogr., 35, 725–730.
Webb, K. L. and W. J. Wiebe (1975): Nitrification on a coral reef. Can. J. Microbiol., 21, 1427–1431.
Webb, K. L., W. D. DuPaul, W. Wiebe, W. Sottile and R. E. Johannes (1975): Enewetak (Eniwetok) Atoll: Aspects of nitrogen cycle on a coral reef. Limnol. Oceanogr., 20, 198–210.
Wiebe, W. J. (1988): Coral reef energetics. p. 231–245. In Concepts of Ecosystem Ecology, ed. by L. R. Pomeroy and J. J. Alberts, Springer-Verlag, New York.
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Miyajima, T., Tanaka, Y., Koike, I. et al. Evaluation of spatial correlation between nutrient exchange rates and benthic biota in a reef-flat ecosystem by GIS-assisted flow-tracking. J Oceanogr 63, 643–659 (2007). https://doi.org/10.1007/s10872-007-0057-y
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DOI: https://doi.org/10.1007/s10872-007-0057-y