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Abstract

Spring deposits exposed during building operations in downtown Windhoek, and lake sediments retrieved from underneath 50 m of water in a sinkhole (Lake Otjikoto), contain pollen profiles which reflect environmental changes in Namibia during the Holocene. At Windhoek moist local conditions are reflected by pollen in the spring deposits which were radiocarbon-dated to between ca. 7000 and 6000 BP. They remained relatively favourable until 5630 BP despite signs of drying. Weedy Compositae (Lactucoideae or Liguliflorae) increased until the end of this record ca. 2410 BP, indicating local disturbance. Deposits from Lake Otjikoto were dated to the late Holocene although an accurate chronology could not be estabiished for the sequence due to unexpected results with radiocarbon measurements. Pollen accumulation values and composition indicate relatively dry conditions after 3500 BP which were followed temporarily by a wetter climate during more recent times.

Keywords

Pollen analysis late Holocene Namibia swamp deposits lake deposits principal components analysis.

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References

Cholnoky, B.J. 1963: Ueber die Diatomeenflora der Quellenablagerungen im Truppengarten (Zoogarten) von Windhoek in Südwestafrika. Cimbebasia 6, 29-43.

Clark, J.D. and Haynes, C.V. 1970: An elephant butchery site at Mwanganda's Village, Karonga, Malawi, and its relevance for palaeolithic archaeology. World Archaeology 1, 390-411.

Dinter, K. 1921: Botanische Reisen in Deutsch-Südwest-Afrika. Repertorium specierum novarum regni vegetabilis (Beihefte) 3, 1-169.

Gevers, T.W. 1932: The hot springs of Windhoek, S.W. Africa. Transactions of the Geological Society of South Africa 35, 1-28.

Giess, W. 1971: A preliminary vegetation map of South West Africa . Dinteria 4, 1-114.

Heine, K. 1988: Southern African palaeoclimates 35-25 ka ago: A preliminary summary. Palaeoecology of Africa 19, 305-315.

MacCalman, H.R. 1967: The Zoo Park Elephant site, Windhoek. Palaeoecology of Africa 2, 102-103.

Middeldorp, A.A. 1982: Pollen concentration as a basis for indirect dating and quantifying net organic and fungal production in a peat bog ecosystem . Review of Palaeobotany and Palynology 37, 225-82.

Rust, U. and Vogel, J.C. 1988: Late Quaternary environmental changes in the northern Namib Desert as evidenced by fluvial landforms. Palaeoecology of Africa 19, 127-37.

10.

Sacs , 1980: Stratigraphy of South Africa, Handbook 8 (Pt 1) Geological Survey. Pretoria: Government printer.

11.

Scott, L. 1982: A Late Quaternary pollen record from the Transvaal bushveld, South Africa. Quaternary Research 17, 339-70.

12.

— 1988: Holocene environmental change at western Orange Free State pans, South Africa, inferred from pollen analysis. Palaeoecology of Africa 19, 109-18.

13.

— 1989a: Late Quaternary vegetation history and climatic change in the eastern OFS. South African Journal of Botany 55(1), 107-16.

14.

— 1989b: Climatic conditions in Southern Africa since the Last Glacial Maximum, inferred from pollen analysis. Palaeogeography, Palaeoclimatology, Palaeoecology 70, 345-53.

15.

— 1990a: Hyrax (Procaviidae) and dassie rat (Petromuridae) middens in paleoenvironmental studies in Africa. In Betancourt, J.L. , van Devender, T.R. and Martin, P.S. editors, Packrat Middens.

16.

The last 40 000 years of biotic change. Tucson: University of Arizona, 397-407.

17.

— 1990b: Palynological evidence for late Quaternary environmental change in southern Africa. Palaeoecology of Africa 20, in press. Scott , L. and Bousman, C.B. 1989: Palynological analysis of hyrax middens from southern Africa. Palaeogeography, Palaeoclimatology, Palaeoecology 79, 367-79.

18.

Stockmarr, J. 1971: Tablets with spores used in absolute pollen analysis . Pollen et Spores 13(4), 615-21.

19.

Sydow, W. 1961: Fund eines Elefantenskelletes. Newsletter of the South West African Scientific Society 2(12), 2-3.

20.

— 1963: Elefantenskelett im Zoogarten. Newsletter of the South West African Scientific Society 4(9), 5-6.

21.

van Zinderen Bakker, E.M. and Miiller, M. 1987: Pollen studies in the Namib Desert. Pollen et Spores 29(2-3), 185-206.

22.

Vogel, J.C. 1989: Evidence of past climatic change in the Namib Desert . Palaeogeography, Palaeoclimatology, Palaeoecology 70, 355-66.

23.

Vogel, J.C. and Rust, U. 1987: Environmental changes in the Kaokoveld Namib Desert during the present millennium. Madoqua 15, 5-16.

Holocene environmental changes in Namibia inferred from pollen analysis of swamp and lake deposits

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