Abstract
Diatom analysis of core M98-2P from the northern basin of Lake Malawi shows changes in lake level and mixing during the last 24,000 calendar years. Fluctuations between the major planktonic diatoms (Aulacoseira nyassensis, Stephanodiscus spp. and Cyclostephanos spp.) are interpreted as reflecting different degrees of nutrient upwelling whereas the percentages, concentrations and influxes of periphytic diatoms are primarily related to variations in water level. Total diatom biovolume is used to give a first-order approximation of relative diatom productivity at the core site. The diatom results suggest periods of low lake level at the LGM and for much of the Late Holocene period. Short-lived regressions are also suggested during the YD, at 10,600 and 8500–8200 years BP. Conversely the lake was high and probably overflowing 15,700–13,000 and 7500–6600 years BP. A low lake level during the LGM contradicts the interpretation of this period made by previous studies from Lake Malawi. However, intermediate lake levels in the Early Holocene support earlier work that suggested that Lake Malawi was lower than northern East African lakes at this time.
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References
Bard, E., Arnold, M., Hamelin, B., Tisnerat-Laborde, N., and Cabioch, G. (1998) Radiocarbon calibration by means of mass spectrometric 230Th/234U and 14C ages of corals. An updated data base including samples from Barbados, Mururoa and Tahiti. Radiocarbon (40 (3), 1085 - 1092
Barker, P., Telford, R., Gasse, F. and Thevenon, R. (in press). Late Pleistocene and Holocene palaeohydrology of Lake Rukwa, Tanzania, inferred from diatom analysis. Palaeogeography, Palaeoclimatology, Palaeoecology.
Barry, S.L., Filippi, M.L., Talbot, M.R. and Johnson, T.C. (This volume ) A 20,000 year sedimentological record from Lake Malawi, East Africa: The Late Pleistocene -Holocene transition in the southern tropics.
Battarbee, R.W. and Kneen, M.J. (1982) The use of electronically counted microspheres in absolute diatom analysis. Limnology and Oceanography 27, 184 - 188.
Beadle, L.C. (1974) The Inland Waters of Tropical Africa, Longman, New York.
Berger, A. and Loutre, M.F. (1991) Insolation values for the climate of the last 10 million years. Quaternary Science Reviews 10, 297 - 317.
Beuning, K.R.M., Talbot, M.R. and Kelts, K. (1997) A revised 30,000-year paleoclimatic and paleohydrologic history of Lake Albert, East Africa. Palaeogeography, Palaeoclimatology and Palaeoecology 136 (1-4), 259 - 279.
Cocquyt, C. (1998) Diatoms from the N. Basin of Lake Tanganyika. Bibliotheca Diatomologica 39, Cramer, Stuttgart.
DeBusk, G.H. (1998) A 37,500-year pollen record from Lake Malawi and implications for the biogeography of afromontane forests. Journal of Biogeography 25 (3), 479 - 500.
Finney, B.P. and Johnson, T.C. (1991) Sedimentation in Lake Malawi (East-Africa) during the past 10,000 Years - a continuous paleoclimatic record from the Southern tropics. Palaeogeography, Palaeoclimatology, Palaeoecology 85 (3-4), 351 - 366.
Finney, B.P., Sholz, C.A., Johnson, T.C. and Trumbore, S. (1996) Late Quaternary lake-level changes of Lake Malawi, in T.C. Johnson and E.O. Odada (eds.), The Limnology, Climatology and Paleoclimatology of the East African Lakes, Amsterdam, pp. 495 - 508.
François, R.H., Pilskaln, C.H. and Altabet, M.A. (1996) Seasonal variation in the nitrogen isotopic composition of sediment trap materials collected in lake Malawi, in T.C. Johnson and E.O. Odada (eds.), The Limnology, Climatology and Paleoclimatology of the East African Lakes, Gordon and Breach, Amsterdam, pp. 241 - 250.
Gasse, F. (1986) East African diatoms. Taxonomy, ecological distribution. Bibliotheca Diatomologica 11, J. Cramer, Berlin.
Gasse, F. (2000) Hydrological changes in the African tropics since the Last Glacial Maximum. Quaternary Science Reviews 19, 189 - 211.
Gasse, F., Ledée, V., Massault, M. and Fontes, J.Ch. (1989) Water-level fluctuations of Lake Tanganyika in phase with oceanic changes during the last glaciation and deglaciation. Nature 342, 57 - 59.
Gasse, F. and Street, F.A. (1978) Late Quaternary lake level fluctuations and environments of the Northern Rift Valley and Afar Region (Ethiopia and Djibouti). Palaeogeography, Palaeoclimatology, Palaeoecology 24, 279 - 325.
Gasse, F. and van Campo, E. (1998) A 40,000-yr pollen and diatom record from Lake Tritrivakely, Madagascar, in the southern tropics. Quaternary Research 49 (3), 299 - 311.
Haberyan, K.A. (1987) Fossil diatoms and the palaeolimnology of Lake Rukwa, S.W.Tanzania. Freshwater Biology 17, 429 - 436.
Haberyan, K.A. and Mhone, O.K. (1991) Algal Communities Near Cape Maclear, Southern Lake Malawi, Africa. Hydrobiologia 215 (3), 175 - 188.
Hecky, R.E. and Kling, H.J. (1987) Phytoplankton ecology of the great lakes in the rift valley of central Africa. Ergebnisse der Limnologie 25, 197 - 228.
Hustedt, F. (1949) Susswasser diatomeen aus dem Albert-National Park Belgisch-Kongo, Exploration du Parc National Albert, Mission H. Dumas (1935-36), Inst. des Parcs Nationaux au Congo Belge. Hayeg, Bruxelles.
Johnsen, S.J. et al. (1992) Irregular Glacial Interstadials recorded in a New Greenland Ice Core. Nature 359 (6393), 311 - 313.
Johnson, T.C., (1996) Sedimentary processes and signals of past climatic change in the large lakes of the East African Rift valley, in T.C. Johnson and E.O. Odada (eds.), The Limnology, Climatology and Paleoclimatology of the East African Lakes, Gordon and Breach, Amsterdam, pp 367 - 412.
Johnson, T.C., Barry, S.L., Chan, Y. and Wilkinson, P. (2001) A decadal record of climate variability spanning the last 700 years in the southern tropics of East Africa. Geology 29, 83 - 86.
Jouzel, J. et al. (1995) The 2-Step Shape and Timing of the Last Deglaciation in Antarctica. Climate Dynamics 11 (3), 151-161.
Kilham, P., Kilham, S.S. and Hecky, R.E. (1986) Hypothesized resource relationships among African planktonic diatoms. Limnology and Oceanography, 31 (6), 1169 - 1181.
Kirschtel, D.B. (1996) BIOVOL Ver. 2.1. available at http://www.uvm.edu/—dkirscht/biovol.html (last accessed on 27/7/99).
Klee, R. and Casper, S.J. (1992) New Centric Diatoms (Thalassiosirales) of Lake Malawi. Archiv Fur Protistenkunde 142 (3-4), 179 - 192.
Klee, R. and Casper, S.J. (1996) Stephanodiscus nyassae Klee et Casper nov spec, a new centric diatom. Archiv Fur Protistenkunde 146 (3-4), 293 - 297.
Krammer, K. and Lange-Bertalot, H. (1986) Bacillariophyceae. I Teil Naviculaceae. Susswasserflora von mitteleuropa, Gustav Fischer Verlag, Stuttgart.
Krammer, K. and Lange-Bertalot, H. (1988) Bacillariophyceae. II Teil: Bacillariaceae, Epithemiaceae, Surirellaceae. Susswasserflora von mitteleuropa, Gustav Fischer Verlag, Stuttgart.
Krammer, K. and Lange-Bertalot, H. (1991a) Bacillariophyceae. III Teil: Centrales, Fragilariaceae, Eunotiaceae. Susswasserflora von mitteleuropa, Gustav Fischer Verlag, Stuttgart.
Krammer, K. and Lange-Bertalot, H. (1991b) Bacillariophyceae. IV Teil: Achnanthaceae, kritische ergänzungen zu Navicula (Lineolatae) und Gomphonema Gesamliteraturverzeichnis. Susswasserflora von mitteleuropa, Gustav Fischer Verlag, Stuttgart.
Lund, J.W.G. (1954) The seasonal cycle of the planktonic diatom Melosira italica ssp. subarctica O. Müll. Journal of Ecology 42, 151 - 179.
Magurran, A.E. (1988) Ecological diversity and its measurement,Princeton University Press.
Müller, O. (1903) Bacillariaceen aus dem Nyasalande und einigen benachbarten Gebeit. Engler's Bot. Jahrb, 34 (36, 45), 9-28, 255-301, 137-206, 69 - 122.
Owen, R.B. and Crossley, R. (1992) Spatial and temporal distribution of diatoms in sediments of Lake Malawi, Central Africa and ecological implications. Journal of Paleolimnology 7, 55 - 71.
Partridge, T.C., DeMenocal, P.B., Lorentz, S.A., Paiker, M.J. and Vogel, J.C. (1997) Orbital forcing of climate over South Africa: A 200,000-year rainfall record from the Pretoria Saltpan. Quaternary Science Reviews 16 (10), 1125 - 1133.
Ricketts, R.D. and Johnson, T.C. (1996) Early Holocene changes in lake level and productivity in Lake Malawi as interpreted from oxygen and carbon isotope measurements of authigenic carbonates, in T.C. Johnson and E.O. Odada (eds.), The Limnology, Climatology and Paleoclimatology of the East African Lakes, Gordon and Breach, Amsterdam, pp. 475 - 493.
Ning Shi, Dupont, L.M., Beug, H.J. and Schneider, R. (1998) Vegetation and climate changes during the last 21000 years in SW Africa based on a marine pollen record. Vegetation History and Archaeobotany 7 (3), 127 - 140.
Smol, J.P. (1981) Problems associated with the use of 'Species Diversity' in paleolimnological studies. Quaternary Research 15, 209 - 212.
Spigel, R.H. and Coulter, G.W. (1996) Comparison of hydrology and physical limnology of the East African Great Lakes: Tanganyika, Malawi, Victoria, Kivu and Turkana (with reference to some North American Great Lakes), in T.C. Johnson and E.O. Odada (eds.), The Limnology, Climatology and Paleoclimatology of the East African Lakes, Gordon and Breach, Amsterdam, pp. 103 - 140.
Stager, J.C. (1984) The diatom record of Lake Victoria (East Africa): the last 17,000 years, in D. Mann (ed.), 7th International Diatom Symposium (1982), Koeltz, Philadelphia, pp. 455 - 476.
Stoermer, E.F. and Hâkansson, H. (1983) An interpretation of the morphological structure and taxonomic relationship of Stephanodiscus damasii Hustedt. Bacillaria 6, 245 - 255.
Stuiver, M. and Reimer, P.J. (1993) Extended 14C database and revised CALIB 3.0 14C age calibration program. Radiocarbon 35, 215 - 230.
Tailing, J.F. (1986) The seasonality of phytoplankton in African Lakes, Hydrobiologia 138, 139-160. Tailing, J.F. and Lemoalle, J. (1998) Ecological Dynamics of Tropical Inland Waters, Cambridge University Press, Cambridge.
Wüest, A., Piepke, G. and Halfman, J.D. (1996) Combined effects of dissolved solids and temperature on the density stratification of Lake Malawi, in T.C. Johnson and E.O. Odada (eds.), The Limnology, Climatology and Paleoclimatology of the East African Lakes, Gordon and Breach, Amsterdam, pp. 183 - 202.
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Gasse, F., Barker, P., Johnson, T.C. (2002). A 24,000 yr Diatom Record from the Northern Basin of Lake Malawi. In: Odada, E.O., Olago, D.O. (eds) The East African Great Lakes: Limnology, Palaeolimnology and Biodiversity. Advances in Global Change Research, vol 12. Springer, Dordrecht. https://doi.org/10.1007/0-306-48201-0_16
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DOI: https://doi.org/10.1007/0-306-48201-0_16
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