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(A–L) Temporal profile of herbaceous (maroon) and woody (green) RUE in northern Senegal from 1987 to 2013. The RUE is calculated as the ratio of the biomass data collected each year at the end of the growing season by the Centre de Suivi Ecologique to seasonal integral rainfall (iR) from the African Rainfall Climatology (38). Solid (dash) lines indicate significant (nonsignificant) slopes. More information on the monitoring sites can be found in Brandt et al. (41).
