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Untangling anthropogenic and climatic influence on riverineforest in the Kruger National Park, South Africa
Plant Conservation Unit, Botany Department, University of Cape Town.
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Arts, Department of Archaeology and Ancient History, African and Comparative Archaeology.
2009 (English)In: Vegetation History and Archaeobotany, ISSN 0939-6314, E-ISSN 1617-6278, Vol. 18, no 2, 171-185 p.Article in journal (Refereed) Published
Abstract [en]

Understanding the interplay between climatic and anthropogenic factors is a major challenge in palaeoecology. In particular, it is often difficult to distinguish anthropogenic and ‘‘natural’’ fire in the charcoal record. In this paper, analysis of fossil pollen, charcoal, diatoms and isotopic evidence from Mapimbi, a small lake in the Kruger National Park, South Africa, suggests that for most of the past ca. 700 years, the riverine gallery forests surrounding Mapimbi were primarily influenced by climate, and benefited during warmer, wetter periods. The transitions between four, statistically different phases in the time-series data coincide with regional climate records previously constructed from speleothem data, and are consistent with the transition from the medieval warm period ending in the 14th century A.D. to the cooler, drier conditions prevailing during the little ice age of ca. A.D. 1400–1800. The data also suggest a period of significant, anthropogenic influence after A.D. 1800, when maize was grown and the incidence of localised fires increased. An increase in woody cover in recent decades may be associated with the management of the area by Kruger National Park. A decline in cultivation occurred in the end of the 20th century linked with changes in socio-political organisation.

Place, publisher, year, edition, pages
2009. Vol. 18, no 2, 171-185 p.
Keyword [en]
Pollen, Charcoal, Diatoms, Stable isotopes, Little ice age, Socio-environmental change
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URN: urn:nbn:se:uu:diva-119243DOI: 10.1007/s00334-008-0202-6OAI: oai:DiVA.org:uu-119243DiVA: diva2:299893
Kruger environments
Available from: 2010-02-24 Created: 2010-02-24 Last updated: 2011-02-10Bibliographically approved

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Ekblom, Anneli
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