Rangeland Ecology & Management

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A late Quaternary pollen sequence from Mfabeni Peatland, South Africa : Reconstructing forest history in Maputaland
Author
Finch, Jemma M
Hill, Trevor R
Publisher
Quaternary Research
Publication Year
2008
Body

This paper documents a continuous ~ 44,000-yr pollen record derived from the Mfabeni Peatland on the Maputaland Coastal Plain. A detailed fossil pollen analysis indicates the existence of extensive Podocarpus-abundant coastal forests before ~ 33,000 cal yr BP. The onset of wetter local conditions after this time is inferred from forest retreat and the development of swampy conditions. Conditions during the last glacial maximum (~ 21,000 cal yr BP) are inferred to have been colder and drier than the present, as evidenced by forest retreat and replacement of swampy reed/sedge communities by dry grassland. Forest growth and expansion during the Holocene Altithermal (~ 8000-6000 cal yr BP) indicates warm, relatively moist conditions. Previous records from Maputaland have suggested a northward migration of Podocarpus forest during the late Holocene. However, we interpret a mid-Holocene decline in Podocarpus at Mfabeni as evidence of deforestation. Forest clearance during the mid-Holocene is supported by the appearance of Morella serrata, suggesting a shift towards more open grassland/savanna, possibly due to burning. These signals of human impact are coupled with an increase in Acacia, indicative of the development of secondary forest and hence disturbance.

Language
English
Resource Type
Text
Document Type
Journal Issue/Article
Journal Volume
70
Journal Number
3
Journal Pages
442-450
Journal Name
Quaternary Research
Keywords
climate change
Forest history
Maputaland
Africa
pollen
human impacts
palaeobotany
Africa