Journal
GLOBAL AND PLANETARY CHANGE
Volume 45, Issue 4, Pages 277-293Publisher
ELSEVIER
DOI: 10.1016/j.gloplacha.2004.09.002
Keywords
phytoliths; LAI; pollen; tropical forest-savanna transition; calibration; Cameroon
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The aim of the study is to calibrate the phytolith index of tree cover density, D/P (the ratio of ligneous dicotyledons phytoliths (D) over Poaceae phytoliths (P)) with Leaf Area Index (LAI) measurements. LAI is the vertically integrated surface of leaves per unit of ground area (m(2) leaves/m(2) ground). Modern soil samples from southeastern Cameroon, collected along a continuous forest-savarina transect, have been analyzed for phytoliths. Phytolith assemblages and D/P index clearly record the physiognomy of the forest and savanna communities and of the transition between both of them. A highly significant relationship was obtained between D/P and LAI. The relationship between phytolith data and the vegetation transect is also discussed and compared with existing palynological results obtained along the same transect. (c) 2004 Elsevier B.V All rights reserved.
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