Abstract
Larger foraminifera are an important component of coastal sediments around Fongafale Island, Funafuti Atoll, Tuvalu, and at least 10 species are present. In the shallow lagoon, foraminifera (mainly Amphistegina lessonii, A. lobifera, Baculogypsina sphaerulata, Calcarina spengleri, Marginopora vertebralis, and Sorites marginalis) are the dominant component of sand and gravel, followed in decreasing order of abundance by calcareous red and green algae, coral, and molluscs. In deeper water, Halimeda replaces the foraminifera. Close inshore, abrasion removes Halimeda and may reduce the number of foraminiferal tests. There is some sediment movement in both onshore and offshore directions although offshore transport appears minor. On land, dissolution that preferentially removes aragonite may increase the proportion of foraminiferal tests to as much as 83% of the subsurface sediment. Sediments on the ocean side are dominated by coral and coralline red algal debris thrown up in 1972 by cyclone Bebe and later moved inshore and lagoonward.
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References
Baines GBK, McLean RF (1976) Sequential studies of hurricane deposit evolution at Funafuti Atoll. Mar Geol 21:M1–M8
Carter R (1986) Wind and sea analysis, Funafuti lagoon, Tuvalu. SOPAC Tech Rep 58:28 pp
Chapman F (1900) On some new and interesting Foraminifera from the Funafuti Atoll, Ellice Islands. J Linnaean Soc (Zool) 28:1–27
Chapman F (1901) Foraminifera from the lagoon at Funafuti. J Linnaean Soc (Zool) 28:161–210
Chapman F (1902) On the Foraminifera collected round the Funafuti Atoll from shallow and moderately deep water. J Linnaean Soc (Zool) 28:379–417
Chapman F (1910) On the Foraminifera and Ostracoda from soundings (chiefly deep-water) collected round Funafuti by H.M.S. ‘Penguin’. J Linnaean Soc (Zool) 30:388–444
Chunting X, Malologa F (1995) Coastal sedimentation and coastal management of Fongafale, Funafuti Atoll, Tuvalu. SOPAC Tech Rep 221:54 pp
Cockey E, Hallock P, Lidz BH (1996) Decadal-scale changes in benthic foraminiferal assemblages off Key Largo, Florida. Coral Reefs 15:237–248
Collen JD (1996) Recolonisation of reef flat by larger foraminifera, Funafuti, Tuvalu. J Micropal 15:130
Collen JD (1998) Metarotaliella tuvaluensis sp. Nov. from Funafuti Atoll, western Pacific Ocean: relationship to mioliolid foraminifera. J Foramin Res 28:66–75
David TWE, Halligan GH, Finckh AE (1904) Report on dredging at Funafuti. In: The atoll of Funafuti. Borings into a coral reef and the results. R Soc Lond, Harrison & Sons, pp 151–159
David TWE, Sweet G (1904) The geology of Funafuti. In: The atoll of Funafuti. Borings into a coral reef and the results. R Soc Lond, Harrison & Sons, pp 61–124
Emery KO, Tracey JI, Ladd HS (1954) Bikini and nearby atolls, Marshall Islands. US Geol Surv Prof Pap 260A:1–265
Hallock P (1979) Trends in test shape in large, symbiont-bearing foraminifera. J Foramin Res 9:61–69
Hallock P (1981) Light dependence in Amphistegina. J Foramin Res 11:40–46
Hallock P (1985) Why are larger foraminifera large? Paleobiol 11:195–208
Hallock P (2000) Symbiont-bearing foraminifera: harbingers of global change? Micropal 46:95–104
Hinde GJ (1904) Report on the materials from the borings at the Funafuti atoll. In: The atoll of Funafuti. R Soc Lond, pp 186–361
Kotler E, Martin RE, Liddell WD (1992) Experimental analysis of abrasion and dissolution of modern reef-dwelling foraminifera: implications for the preservation of biogenic carbonate. Palaios 7:244–276
Maiklem WR (1968) Some hydraulic properties of bioclastic carbonate grains. Sedimentology 7:101–109
Maragos JE, Baines GBK, Beveridge PJ (1973) Tropical cyclone Bebe creates a new land formation on Funafuti Atoll. Science 181:1161–1164
McKee ED, Chroni J, Leopold EB (1959) Sedimentary belts in lagoon of Kapingamarangi Atoll. Bull Am Assoc Petrol Geol 43:501–562
Murray JW (1991) Ecology and palaeoecology of benthic foraminifera. Longman Scientific and Technical, 397 pp
Radke BM (1985) Bathymetry and beach profiling, Funafuti, Tuvalu, 24 September–19 October 1984. CCOP/SOPAC Cruise Rep 106, 18 pp
Smith R (1995a) Bathymetric and physical monitoring of the pilot project dredging site in Funafuti Atoll, Tuvalu. SOPAC Tech Rep 216, 57 pp, Suva, Fiji
Smith R (1995b) Assessment of lagoon sand and aggregate resources, Funafuti Atoll, Tuvalu. SOPAC Tech Rep 212:64 pp, plus appendices
Smith R, Woodward P (1992) Bathymetric map of Tuvalu—Funafuti Lagoon. 1:40,000 SOPAC Bathymetric Series Map 2
Smith R, Young S, Frost G (1994) Borrow pit resources—related surveys, Funafuti Atoll, Tuvalu. SOPAC Prelim Rep 69:35 pp
Sollas WJ (1904) Narrative of the Expedition in 1896. In: The atoll of Funafuti. Borings into a coral reef and the results. R Soc Lond, Harrison & Sons, pp 1–28
Sollas WJ (1905) The age of the earth. Fisher Unwin, London
Tudhope AW, Scoffin TP, Stoddart DR, Woodroffe CD (1985) Sediments of Suwarrow Atoll. Proc 5th Int Coral Reef Cong, Tahiti 6:611–616
Weber JN, Woodhead PMJ (1972) Carbonate lagoon and beach sediments of Tarawa Atoll, Gilbert Islands. Atoll Res Bull 157, 29 pp
Woodroffe CD, Morrison RJ (2001) Reef-island accretion and soil development on Makin, Kiribati, central Pacific. Catena 44:245–261
Acknowledgements
Thanks are due to many staff of the South Pacific Applied Geosciences Commission (SOPAC) in Suva for helpful discussions and for providing bathymetric and sedimentological data and logistic support. In particular, we gratefully acknowledge the assistance of Philip Muller, Russell Howorth, and Robert Smith. Faatasi Malologa of the Tuvalu Department of Lands and Survey assisted with some of the sample collecting. We thank the two anonymous reviewers for their useful comments on the text. Direct support for the program of which this study forms part was provided by the Australia and Pacific Science Foundation, New Zealand Ministry of Foreign Affairs and Trade, SOPAC, and Victoria University of Wellington.
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Collen, J.D., Garton, D.W. Larger foraminifera and sedimentation around Fongafale Island, Funafuti Atoll, Tuvalu. Coral Reefs 23, 445–454 (2004). https://doi.org/10.1007/s00338-004-0396-8
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DOI: https://doi.org/10.1007/s00338-004-0396-8