Abstract
A method is described for processing flocculated clay-rich sediments which avoids acetolysis and heavy liquid separation. Twin 80 (Merck index 1983) is used for deflocculation. Microsieves separate the recovered organisms according to size. Taxonomic identification and quantitative evaluation of the organisms can be performed in counting chambers or on permanent slides. Algae, cysts and exospores of dinoflagellates, pollen grains and zooplankton remains can be recovered.
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References
Aaby, B. & G. Digerfeldt, 1986. Sampling techniques for lakes and bogs. pp. 187–201. In: Handbook of Holocene Palaeoecology and Palaeohydrology (B.E. Berglund ed.), John Wiley & Sons Ltd., New York.
Ambühl, H., 1985. Technik der Präparation und Darstellung von Sediment-Kernen mit grossem Querschnit. Schweiz. Z. Hydrol. 47: 249–256.
Bates, C. D., P. Coxon & P. L. Gibbard, 1978. A new method for the preparation of clay-rich sediment samples for palynological investigation. New Phytol. 81: 459–463.
Battarbee, R. W., 1981. Diatom and Chrysophyceae microstratigraphy of annually laminated sediments of a small meromictic lake. Striae 14: 105–109.
Christie, C. E., J. P. Smol, P. Huttunen & J. Merilainen, 1988. Chrysophyte scales recorded in lake sediments from eastern Finland. Hydrobiologia 161: 237–243.
Cronberg, G., 1985. Chrysophycean cysts and scales in sediments: a review. pp. 281–315. In: Chrysophytes — Aspects and Problems (J. Kristiansen & R. A. Andersen, eds.), Cambridge University Press.
Cronberg, G., 1986. Blue-green algae, green algae and Chrysophyceae in sediments. pp. 507–526. In: Handbook of Holocene Palaeoecology and Palaeohydrology (B. E. Berglund ed.), John Wiley & Sons Ltd., New York.
Evitt, W. R., 1985. Sporopollenin Dinoflagellate Cysts: Their Morphology and Interpretation. Amer. Assoc. Strat. Palynol. Foundation, 333 pp.
Faegri, K. & J. Iversen, 1974. Textbook of Pollen Analysis. Munksgaard, Copenhagen.
Hartmann, H. & C. Steinberg, 1986. Mallomonadacean (Chrysophyceae) scales: early biotic palaeoindicators of lake acidification. Hydrobiologia 143: 87–91.
Hasle, G. R., 1978. Using the inverted microscope. pp. 88–96. In: Phytoplankton Manual (A. Sournia, ed.), Monographs on Oceanographic Methodology, 6. UNESCO.
Haworth, E. Y., 1983. Diatom and chrysophyte relict assemblages in the sediments of Blelham Tarn in the English Lake District. Hydrobiologia 103: 131–134.
Kadota, S., 1974. A quantitative study of microfossils in a 200 meter core sample from Lake Biwa. pp. 236–246. In: Palaeolimnology of Lake Biwa and the Japanese Pleistocene, 2. (S. Horie, ed.), Otsu, Japan.
Korde, N. W., 1966. Algenreste in Sedimenten zur Entwicklungsgeschichte der Seen und umliegenden Landschaften. Arch. Hydrobiol. Beih. Ergebn. Limnol. 3: 1–38.
Kristiansen, J. & R. A. Andersen (eds.), 1986. Chrysophytes: Aspects and Problems. Cambridge University Press.
Livingstone, D. & G. H. M. Jaworski, 1980. The viability of akinetes of blue-green algae recovered from the sediments of Rostherne Mere. Br. Phycol. J. 15: 357–364.
Pollingher, U., 1986. Non-siliceous algae in a five meter core from Lake Kinneret (Israel). Hydrobiologia 143: 213–216.
Saarnisto, M., 1986. Annually laminated lake sediments. pp. 343–370. In: Handbook of Holocene Palaeoecology and Palaeohydrology (B. E. Berglund, ed.), John Wiley & Sons Ltd., New York.
Saarnisto, M., P. Huttunen & K. Tolonen, 1977. Annual lamination of sediments in Lake Lovojavi, southern Finland, during the past 600 years. Ann. Bot. Fenn. 14: 35–45.
Smol, J. P., 1980. Fossil synuracean (Chrysophyceae) scales in lake sediments: a new group of paleoindicators. Can. J. Bot. 58: 458–465.
Smol, J. P., 1990. Diatoms and chrysophytes — a useful combination in palaeolimnological studies: report of the workshop and a working bibliography. pp. 585–592. In: Proceedings of the Tenth International Diatom Symposium (H. Simola, ed.), Koeltz Scientific Books, Koenigstein.
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Pollingher, U., Ambühl, H. & Bürgi, H.R. A new method for processing clay-rich unconsolidated sediments for paleoecological investigations. J Paleolimnol 7, 95–101 (1992). https://doi.org/10.1007/BF00197033
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DOI: https://doi.org/10.1007/BF00197033