Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-15T11:14:28.406Z Has data issue: false hasContentIssue false

Phytoliths from Archaeological Sites in the Tropical Forest of Ituri, Democratic Republic of Congo

Published online by Cambridge University Press:  20 January 2017

Julio Mercader
Affiliation:
Department of Anthropology, George Washington University, 2110 G Street, NW, Washington, DC, 20052, E-mail: [email protected]
Freya Runge
Affiliation:
Universitat Paderborn, FB1, Physische Geographie, D-33098, Paderborn, Germany, E-mail: [email protected]
Luc Vrydaghs
Affiliation:
Laboratory of Palaeontology, Gent University, Krigslaan, 281/S8, B-9000, and Lab of Wood Biology and Xylarium, RMCA, B-3080, Tervuren, Belgium, E-mail: [email protected]
Hughes Doutrelepont
Affiliation:
Lab of Wood Biology and Xylarium, RMCA, B-3080, Tervuren, Belgium
Corneille E. N. Ewango
Affiliation:
Cefrecof, P.O. Box 21285, Nairobi, Kenya, and Epulu via Bunia, Democratic Republic of Congo
Jordi Juan-Tresseras
Affiliation:
Departament de Prehistòria, Història Antiga i Arqueologia, Facultat de Geografia i Història, Universitat de Barcelona, Baldiri i Reixac, s/n Torre B, p. 11, E-08028, Barcelona, Spain E-mail: [email protected]

Abstract

Phytoliths record late Quaternary vegetation at three archaeological sites in the Ituri rain forest. The oldest deposits, dated to ca. 19,000 to 10,000 14C yr B.P., contain abundant phytoliths of grasses but also enough arboreal forms to show that the landscape was forested. The late-glacial forests may have had a more open canopy than today's. Younger phytolith assemblages show that the northeast Congo basin was densely forested throughout the Holocene. Archaeological materials among the phytoliths show that people lived in this region during the Pleistocene. Therefore, Pleistocene and Holocene prehistoric foragers probably inhabited tropical forests of the northeast Congo basin many millennia before farming appeared in the region.

Type
Research Article
Copyright
University of Washington

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Alexandre, A., Meunier, J., Lezine, A., Vincens, A., Schwartz, D. (1997). Phytoliths: Indicators of grassland dynamics during the Late Holocene in intertropical Africa. Palaeogeography, Palaeoclimatology, Palaeoecology,136, 213229. Google Scholar
Bailey, R.. (1991). The behavioral ecology of Efe pygmy men in the Ituri forest, Zaire, Anthropological Paper 86. Museum of Anthropology,University of Michigan, Ann Arbor.Google Scholar
Bailey, R., Head, G., Jenike, M., Owen, B., Rechtman, R., Zechenter, E. (1989). Hunting and gathering in tropical rain forest: Is it possible?. American Anthropologist,91, 5982. Google Scholar
Barboni, D., Bonnefille, R., Alexandre, A., Meunier, J. (1999). Phytoliths as paleoenvironmental indicators, west side Middle Awash Valley, Ethiopia. Palaeogeography, Palaeoclimatology, Palaeoecology,152, 87100. Google Scholar
Bergonzini, L., Chalie, F., Gasse, F. (1997). Paleoevaporation and paleoprecipitation in the Tanganyika Basin at 18,000 years B.P. inferred from hydrologic and vegetation proxies. Quaternary Research,47, 295305. CrossRefGoogle Scholar
Brook, G., Burney, D., Cowart, J.. Paleoenvironmental data for Ituri, Zaire, from sediments in Matupi Cave, Mount Hoyo. Boaz, N. (1990). Evolution of Environments and Hominidae in the African Western Rift Valley. Virginia Museum of Natural History, Martinsville.4970. Google Scholar
Bultot, F. (1971). Atlas Climatique du Bassin Congolase. Institute National pour l'Etudes Agronomique du Congo, Brussels.Google Scholar
Colinvaux, P., Oliveira, P., Moreno, E., Miller, C., Bush, M. (1996). A long pollen record from lowland Amazonia: Forest and cooling in glacial times. Science,274, 8588. Google Scholar
Cowling, S. (1999). Simulated effects of low atmospheric CO2 on structure and composition of North American vegetation at the Last Glacial Maximum. Global Ecology and Biogeography,8, 8193. Google Scholar
Elenga, H., Schwartz, D., Vincens, A. (1994). Pollen evidence of Late Quaternary vegetation and inferred climate changes in Congo. Palaeogeography, Palaeoclimatology, Palaeoecology,109, 345356. Google Scholar
González, I.. Estudio petrológico de la región noreste del Ituri, Zaire. (1997). Bajo el Techo Forestal. La Evolución del Poblamiento en el Bosque del Ituri, Zaire. p. 372–385Google Scholar
Haffer, J. (1969). Speciation in Amazonian forest birds. Science,165, 131136. Google Scholar
Hamilton, A. (1972). The significance of patterns of distribution shown by forest plants and animals in tropical Africa for the reconstruction of Upper Pleistocene palaeoenvironments. Palaeoecology of Africa,9, 6397. Google Scholar
Hart, T. (1985). The Ecology of a Single-Species Dominant Forest and Mixed Forest in Zaire. Michigan State University, East Lansing.Google Scholar
Hart, T., Hart, J. (1986). The ecological basis of hunter-gatherer subsistence in African rain forests: The Mbuti of eastern Zaire. Human Ecology,14, 2955. CrossRefGoogle Scholar
Hart, T., Hart, J., Dechamps, M., Fournier, M., Ataholo, M.. Changes in forest composition over the last 4000 years in the Ituri Basin, Zaire. van der Maesen, L.J.G., van der Burgt, X.M., van Medenback de Kooy, J.M. (1996). The Biodiversity of African Plants. Kluwer Academic, Dordrecht.545563. Google Scholar
Ichikawa, M.. Traditional use of tropical rain forest by the Mbuti hunter-gatherers in central Africa. Itoigawa, N. (1992). Topics in Primatology. University of Tokyo Press, Tokyo.305317. Google Scholar
Jahns, S., Huls, M., Sarnthein, M. (1998). Vegetation and climate history of west equatorial Africa based on a marine pollen record off Liberia (site GIK 16776) covering the last 400,000 years. Review of Palaeobotany and Palynology,102, 277288. Google Scholar
Jolly, D., Harrison, S., Damnati, B., Bonnefille, B. (1998). Simulated climate and biomes of Africa during the late Quaternary: Comparison with pollen and lake status data. Quaternary Science Reviews,17, 629658. CrossRefGoogle Scholar
Kealhofer, L., Piperno, D. (1998). Opal phytoliths in Southeast Asian flora. Smithsonian Contributions to Botany,88, 139. CrossRefGoogle Scholar
Kutzback, J., Gallimore, R., Harrison, S., Behling, P., Selin, R., Laarif, F. (1998). Climate and biome simulations for the past 21,000 years. Quaternary Science Reviews,17, 473506. Google Scholar
Lavreau, J.. (1982). Etude geologique du Haut-Zaı̈re. Genèse et évolution d'un segment lithosphérique Archéen, Annales, Sciences géologiques, no. 88,Museé Royal de l'Afrique Centrale, Tervuren, Belgium.Google Scholar
Maley, J., Brenac, P. (1998). Vegetation dynamics, palaeoenvironments, and climatic changes in the forests of western Cameroon during the last 28,000 years B.P. Review of Palaeobotany and Palynology 157187. Google Scholar
Marchant, R., Taylor, D., Hamilton, A. (1997). Late Pleistocene and Holocene history at Mubwindi Swamp, southwest Uganda. Quaternary Research,47, 316328. Google Scholar
Mercader, J. (1997). Bajo el Techo Forestal. La Evolución del Poblamiento en el Bosque Ecuatorial del Ituri, Zaire. Universidad Complutense, Madrid.Google Scholar
Mercader, J.. (2000). Congo contextual data for phytolith analysis. World Data center-A for paleoclimatology data contribution series 1999-044 NOAA/NGDC Paleoclimatology Program,Boulder, CO. [http://www.ngdc.noaa. gov/paleo.html]Google Scholar
Mercader, J., Garcı́a-Heras, M., González, I. (2000). Ceramic tradition in the African rain forest: Characterization analysis of ancient and modern pottery from Ituri, D.R. Congo. Journal of Archaeological Science,27, 163182. Google Scholar
Mworia-Maitima, J. (1997). Prehistoric fires and land cover change in western Kenya: Evidences from pollen, charcoal, grass cuticles, and grass phytoliths. The Holocene,7, 409417. Google Scholar
Piperno, D. (1988). Phytolith Analysis. An Archaeological and Geological Perspective. Academic Press, London.Google Scholar
Piperno, D.. Phytolith and charcoal records from deep lake cores in the American tropics. Pearsall, D., Piperno, D. (1993). Current Research in Phytolith Analysis: Applications in Archaeology and Paleoecology. University Museum of Archaeology and Anthropology, Philadelphia.5871. Google Scholar
Piperno, D. (1998). Paleoethnobotany in the neotropics from microfossils: New insights into ancient plant use and agricultural origins in the tropical forest. Journal of World Prehistory,12, 393449. Google Scholar
Piperno, D., Becker, P. (1996). Vegetational history of a site in the central Amazon basin derived from phytolith and charcoal records from natural soils. Quaternary Research,45, 202209. Google Scholar
Piperno, D., Pearsall, D. (1998). The silica bodies of tropical American grasses: Morphology, taxonomy, and implications for grass systematics and fossil phytolith identification. Smithsonian Contributions to Botany,85, 140. CrossRefGoogle Scholar
Postek, M. (1981). The occurrence of silica in the leaves of Magnolia grandiflora . Botanical Gazette,124, 124134. Google Scholar
Runge, F. (1999). The opal phytolith inventory of soils in Central Africa—Quantities, shapes, classification, and spectra. Review of Palaeobotany and Palynology,107, 2353. Google Scholar
Runge, J. (1995). New results on Late Quaternary landscape and vegetation dynamics in eastern Zaire (Central Africa). Zeitschrift für Geomorphologie,99, 6574. Google Scholar
Sowunmi, M. (1991). Late Quaternary environments in equatorial Africa: Palynological evidence. Palaeoecology of Africa,22, 213238.Google Scholar
Talbot, M., Johannessen, T. (1992). A high resolution palaeoclimatic record for the last 27,500 years in tropical West Africa from the carbon and nitrogen isotopic composition of lacustrine organic matter. Earth and Planetary Science Letters, 110, 2337.Google Scholar
Van der Hammen, T., Absy, M. (1994). Amazonia during the last glacial. Palaeogeography, Palaeoclimatology, Palaeoecology,109, 247261. Google Scholar
Van der Kaars, W., Dam, M. (1995). A 135,000 year record of vegetational and climatic change from the Bandung area, West Java, Indonesia. Palaeogeography, Palaeclimatology, Palaeoecology, 117, 5572. Google Scholar
Van Noten, F. (1977). Excavations at Matupi Cave. Antiquity,51, 3540. Google Scholar
White, F.. (1983). Vegetation of Africa: A descriptive memoir to accompany the UNESCO/AETFAT/UNSO vegetation map of Africa. Natural Resources Research, no. 20,UNESCO, Paris.Google Scholar