Abstract
Surface sediment diatoms from the east coast of Lake Tanganyika were analysed using ordination and classification techniques, and compared with assemblages previously described from the northern part of the lake. Grain-size analyses were performed on subsamples. Four groups of diatom assemblages were recognised. The first group clusters samples taken in the north, far from the Rusizi river mouth. The second group comprises samples taken on silty sediment along the Tanzanian coast, including one sample taken near the mouth of the Malagarazi river and those from the northernmost part of the lake. The third group comprises surface sediments along the Burundian coast (near Ramba and Magara), and the fourth is characterised by epipsammic taxa. A sample taken near the central arm of the Malagarazi river is included in the latter group. The impact of small rivers on the diatom assemblages in the surface sediments is restricted to the mouth area.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bouroullec, J.-L., 1990. Sedimentation superficielle et tectonique récente du bassin Nord-Tanganyika, Rift Est-Africain. Diplôme d'Etudes Approfondies, Université de Bretagne Occidentale
Bouroullec, J.-L., J.-P. Rehault, J. Rolet, J.-J. Tiercelin & A.Mondeguer, 1991. Quaternary sedimentary processes and dynamics on the northern part of the Lake Tanganyika trough, East African Rift system. Evidence of lacustrine eustatism? Bull. Centres Rech. Explor.-Prod. Elf Aquitaine 15: 343-368.
Bouroullec, J.-L., C. Thouin, J.-J. Tiercelin, A. Mondeguer, J. Rolet & J.-P. Rehault, 1992. Séquences sismiques haute résolution du fossé nord-Tanganyika, Rift Est-Africain. Implications climatiques, tectoniques et hydrothermales. C. r. Acad. Sci. Paris 315: 601-608.
Caljon A.G., 1987a. Phytoplankton of a recently landlocked brackish-water lagoon of Lake Tanganyika: a systematic account. Hydrobiologia 153: 31-54.
Caljon A. G., 1987b. A recently landlocked brackish-water lagoon of Lake Tanganyika: physical and chemical characteristics, and spatio-temporal distribution of phytoplankton. Hydrobiologia 153: 55-70.
Caljon A. G., 1991. Sedimentary diatom assemblages in the northern part of Lake Tanganyika. Hydrobiologia 226: 179-191.
Caljon A. G., 1992. Water quality in the Bay of Bujumbura (Lake Tanganyika) and its influence on phytoplankton composition. Mitt. int. Ver. Limnol. 23: 55-65.
Caljon A. G. & C. Cocquyt, 1992. Diatoms from surface sediments of the northern part of Lake Tanganyika. Hydrobiologia 230: 135-156.
Cocquyt C., 1998. Diatoms from the northern basin of Lake Tanganyika. Bibliotheca Diatomologica 39: 276 pp.
Cohen A. S., K.-E. Lezzar, Tiercelin J.-J. & M. Soreghan, 1997. New paleogeographic and lake-level reconstructions of Lake Tanganyika: implications for tectonic, climatic and biological evolution in a rift lake Basin Res. 9: 107-132.
Coulter, G. (ed.), 1991. Lake Tanganyika and its Life. Natural History Museum Publications. Oxford University Press: 354 pp. 71
Degens, E. T., R. P. Von Herzen & H.-K. Wong, 1971. Lake Tanganyika: water chemistry, sediments, geological structure. Naturwissenschaften 58: 229-240.
Gasana, J.-Cl., 1988. Etude sur la qualité des eaux du lac Tanganyika dans la baie de Bujumbura. Projet de fin d'études d'ingénieur civil. Université de Bujumbura: 140 pp.
Haberyan, K. A., 1985. The role of copepod fecal pellets in the deposition of diatoms in Lake Tanganyika. Limnol. Oceanogr. 30: 1010-1023.
Haberyan, K. A. & R. E. Hecky, 1987. The late Pleistocene and Holocene stratigraphy and paleolimnology of Lakes Kivu and Tanganyika. Palaeogeography, Palaeoclimatology, Palaeoecology 61: 169-197.
Hill, M. O., 1979. TWINSPAN-A FORTRAN program for arranging multivariate data in an ordered two-way table by classification of individulas and attributes. Cornell University Ithaca, New York: 90 pp.
Jongman R. H. G., C. J. F. Ter Braak & O. F. R. Van Tongeren, 1987. Data analysis in community and landscape ecology. Wageningen, Pudoc: 299 pp.
Kufferath, H., 1956. Organismes trouvés dans les carottes de sondages et les vases prélevés au fond du Lac Tanganyika. Résult. Sci.Explor. Hydrobiol. Lac Tanganyika. Inst. R. Sci. nat. Belg. 4/3; 74 pp.
Mondeguer, A., J.-J. Tiercelin, M. Hoffert, P. Larqué, J. Le Fournier & P. Tucholka, 1986. Sédimentation actuelle et récente dans un petit bassin en contexte extensif et décrochant: la baie de Burton, fossé Nord-Tanganyika, Rift Est-Africain. Soc. Nat. Elf Aquitaine. Bull. Centres Rech. Explor.-Prod. Elf Aquitaine 10: 229-247.
Mondeguer, A., J.-J. Tiercelin & J. Le Fournier, 1987. Néotectonique et sédimentation associée: la terminaison sud du fossé du lac Tanganyika (Rift Est-Africain). C. r. Acad. Sci. Paris 304, s. 2: 371-376.
Schrader, H.J., 1973. Proposal for a standardized method of cleaning diatom bearing deep-sea and land-exposed marine sediments. Nova Hedwigia 45: 403-409.
Tiercelin, J.-J., A. Mondeguer, F. Gasse, C. Hillaire-Marcel, M. Hoffert, P. Larqué, V. Lédée, P. Marestang, C. Ravenne, J.-F. Raynaud, N. Thouveny, A. Vincens & D. Williamson, 1988. 25.000 ans d'histoire hydrologique et sédimentaire du lac Tanganyika, Rift Est-Africain. C. r. Acad. Sci. Paris 307, s. 2: 1375-1382.
Tiercelin J.-J., M. Soreghan, A. S. Cohen, K.-E. Lezzar & J.-L. Bouroullec, 1992. Sedimentation in large rift lakes: example from the middle pleistocene-modern deposits of the Tanganyika trough, East African Rift System. Bull. Centres Rech. Explor.-Prod. Elf Aquitaine 16: 83-110.
Rights and permissions
About this article
Cite this article
Cocquyt, C., Schram, D. Diatom assemblages in surface sediments along the east coast of Lake Tanganyika. Hydrobiologia 436, 59–71 (2000). https://doi.org/10.1023/A:1026533804130
Issue Date:
DOI: https://doi.org/10.1023/A:1026533804130