Abstract
Diatoms preserved in the sediments of Lake C2 (82°50′ N, 76°00′ W), a high arctic meromictic lake, track changes in the lake's salinity which have occurred as the basin was isolated from the sea. An assemblage dominated by marine taxa, such as Chaetoceros species, Nitzschia cylindrus and Diploneis spp., was replaced by a Cyclotella kuetzingiana var. planetophora dominated freshwater flora. A brief brackish period separates the two assemblages. Relatively little floristic change occurred within either the marine or freshwater periods, indicating rather stable environmental conditions, except that rheophilous diatoms fluctuated in relative abundance during the lacustrine phase, perhaps tracking past changes in discharge from inflowing streams. These may reflect periods of warmer, wetter environmental conditions.
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References
Anderson R. Y., W. E. Dean, J. P. Bradbury & D. Lowe, 1985. Meromictic lakes and varved lake sediments in North America. U.S. Geological Survey Bulletin 1607. USG Printing Office, Washington.
Battarbee R. W., 1973. A new method for the estimation of absolute microfossil numbers with reference especially to diatoms. Limnol. Oceanogr. 18: 647–653.
Battarbee R. W., 1986. Diatom analysis. In Berglund B. E. (ed.), Handbook of Holocene Palaeoecology and Palaeohydrology. John Wiley and Sons, Toronto: 527–570.
Bradley R. S., M. J. Retelle, S. D. Ludlam, D. R. Hardy, B. Zolitschka & S. F. Lamoureux, 1996. The Taconite Inlet Lakes Project: a systems approach to paleoclimatic reconstruction. J. Paleolimnol. 16: 97–110.
Denys L., 1990. Fragilaria blooms in the Holocene of the western coastal plain of Belgium. In Simola H. (ed.), Proceedings of the Tenth International Diatom Symposium. Koeltz Scientific Books, Koenigstein: 397–406.
Douglas, M. S. V., 1989. Taxonomic and ecological characterization of freshwater diatoms from the sediments of 36 high arctic ponds (Cape Herschel, Ellesmere Island, N.W.T., Canada). M.Sc Thesis. Queen's University, Kingston, Ontario, 172 pp.
Douglas M. S. V. & J. P. Smol, 1993. Freshwater diatoms from high arctic ponds (Cape Herschel, Ellesmere Island, N.W.T.). Nova Hedwigia 57: 511–552.
Douglas M. S. V., J. P. Smol & W. Blake Jr., 1994. Marked post-18th century environmental change in high-arctic ecosystems. Science 266: 416–419.
Hardy D. R., 1996. Climatic influences on streamflow and sediment flux into Lake C2, Northern Ellesmere Island, Canada. J. Paleolimnol. 16: 133–149.
Hardy, D. R., R. S. Bradley & B. Zolitschka, The climatic signal in varved sediments from Lake C2, Northern Ellesmere Island, Canada. J. Paleolimnol. This issue.
Jongman R. H. G., C. J. F. ter Braak & O. F. R.van Tongeren, 1987. Data analyses in community and landscape ecology. Wageningen, The Netherlands, Pudoc, 299 pp.
Kjemperud A., 1981. Diatom changes in sediments of basins possessing marine/lacustrine transitions in Frosta, Nord Trøndelas, Norway. Boreas 10: 27–38.
Lamoureux S. F., 1993. Varved Sediment Studies: laboratory analysis and results. Department of Geology and Geography, University of Massachusetts, Amherst. Internal Report, 60 pp.
Lamoureux, S. F., 1994a. Paleoclimatic reconstruction from varved lake sediments, Lake C2, Ellesmere Island, Canada. Department of Geology and Geography, University of Massachusetts, Amherst. MSc Thesis, 160 pp.
Lamoureux S. F., 1994b. Embedding unfrozen lake sediments for thin section preparation. J. Paleolimnol. 10: 141–146.
Lemmen D. S., R. Gilbert, J. P. Smol & R. I. Hall, 1988. Holocene sedimentation in glacial Tasikutaaq Lake, Baffin Island. Can. J. Earth Sci. 25: 810–823.
Lortie G., 1983. Les diatomées de la Mer de Goldthwait dans la région de Riviere-du-Loup, Québec. Géographie Phys. Quat. 37: 279–296.
Ludlam S. D., 1996a. The comparative limnology of coastal, meromictic High Arctic lakes. J. Paleolimnol. 16: 111–131.
Ludlam S. D., 1996b. Stratification patterns in the eastern arm of Taconite Inlet, Ellesmere Island, N.W.T.. J. Paleolimnol. 16: 205–215.
Ludlam S. D., S. Feeney & M. S. V. Douglas, 1996. Changes in the importance of lotic and littoral diatoms in a high arctic lake over the last 191 years. J. Paleolimnol. 16: 187–204.
Meguro H., K. Ito & H. Fukushima, 1967. Ice flora (bottom type): A mechanism of primary production in polar seas and the growth of diatoms in sea ice. Arctic 20: 114–133.
Pienitz R., G. Lortie & M. Allard. 1991. Isolation of lacustrine basins and marine regression in Kuujjuaq area, Northern Québec as inferred from diatom analysis. Géographie Phys. Quat. 45: 155–174.
Reasoner M. A., 1993. Equipment and procedure improvements for a lightweight, inexpensive, percussion core sampling system. J. Paleolimnol. 8: 273–281.
Renberg I., 1990. A procedure for preparing large sets of diatom slides from sediment cores. J. Paleolimnol. 4: 87–90.
Sancetta C., 1982. Distribution of diatom species in surface sediments of the Bering and Okhotsk seas. Micropaleontology 28: 221–257.
Smol J. P., 1983. Paleophycology of a high arctic lake near Cape Herschel, Ellesmere Island. Can J. Bot. 61: 2195–2204.
Smol J. P., 1988. Paleoclimate proxy data from freshwater arctic diatoms. Verh. int Ver. Limnol. 23: 837–844.
Stabell B., 1985. The development and succession of taxa within the diatom genus Fragilaria Lyngbye as a response to basin isolation from the sea. Boreas 14: 273–286.
Stabell B., 1987. Changes in diatom floras in late Quaternary western and south-eastern Norwegian marine and freshwater sediments: Response to basin isolation from the sea. Nova Hedwigia 44: 305–326.
Ter Braak C. J. F., 1988. CANOCO — a FORTRAN program for canonical community ordination by [partial] [detrended] [canonical] correspondence analysis and redundancy analysis (version 2.1). Technical report LWA-99–02. Agricultural Mathematics Group, Wageningen.
Ter Braak C. J. F., 1990a. CANOCO — version 3.10. Unpublished computer program, Agricultural Mathematics Group, 6700 AC Wageningen.
Ter Braak C. J. F., 1990b. Update notes: CANOCO — version 3.10. Unpublished computer program, Agricultural Mathematics Group, 6700 AC Wageningen.
Wassel A. & H. Håkansson, 1992. Diatom stratigraphy in a lake on Horseshoe Island, Antarctica: a marine-brackish-fresh water transition with comments on the systematics and ecology of the most common diatoms. Diatom Research 7: 157–194.
Williams K. M., 1990a. Paleolimnology of three Jackman Sound Lakes, Southern Baffin Island, based on down-core diatom analyses. J. Paleolimnol. 4: 203–217.
Williams K., 1990b. Late Quaternary paleoceanography of the western Baffin Bay region: evidence from fossil diatoms. Can. J. Earth Sci. 27: 1487–1494.
Wolfe A. P., 1994. Late Wisconsinan and Holocene diatom stratigraphy from Amarok Lake, Baffin Island, N.W.T., Canada. J. Paleolimnol. 10: 129–139.
Young R. B. & R. H. King, 1989. Sediment chemistry and diatom stratigraphy of two high arctic isolation lakes, Truelove Lowland, Devon Island, N.W.T., Canada. J. Paleolimnol. 2: 207–225.
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This is the eighth in a series of papers published in this issue on the Taconite Lakes Project. These papers were collected by Dr R. S. Bradley.
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Douglas, M.S.V., Ludlam, S. & Feeney, S. Changes in diatom assemblages in Lake C2 (Ellesmere Island, Arctic Canada): response to basin isolation from the sea and to other environmental changes. J Paleolimnol 16, 217–226 (1996). https://doi.org/10.1007/BF00176937
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DOI: https://doi.org/10.1007/BF00176937