Fig. 2 | Communications Biology

Fig. 2

From: Changes in rainfall distribution promote woody foliage production in the Sahel

Fig. 2

Illustration of woody population dynamics. a Image pair of Quickbird-2 images from January 2004 and 2010 showing a burst of growth in both canopy size and tree density in the southern part of the sandy Ferlo. Images are shown in false colour composites (bands 4,3,2) with trees as red objects. Bright white dots are eroded ancient termite mounts without any vegetative cover. Field-measured woody cover was 2% in 2005 and 6% in 2009. WPF was 331 kg ha−1 in 2003 and 468 kg ha−1 in 2010. Additional image pairs can be found in Supplementary Figs 46. b This image pair (aerial photo from 1980 and WorldView-1 from 2008) shows no obvious changes in woody cover over several decades. Optical differences are mainly caused by the different observation systems

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