Technical Comments

Comment on "Climate-Driven Ecosystem Succession in the Sahara: The Past 6000 Years"

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Science  28 Nov 2008:
Vol. 322, Issue 5906, pp. 1326
DOI: 10.1126/science.1163381

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Abstract

Kröpelin et al. (Research Articles, 9 May 2008, p. 765) interpreted a sediment record from Lake Yoa in the east-central part of North Africa as support for a weak biogeophysical climate-vegetation feedback in the Sahara during the mid-Holocene. We argue that the new data do not invalidate earlier modeling results on strong land-atmosphere coupling in the Western Sahara for which the Lake Yoa record is far less representative.

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