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… 49 LAND-USE IMPACTS ON PLANT DIVERSITY AND CARBON STORAGE AT ITAPARICA RESERVOIR, … AGAINST LAND DEGRADATION AND FOR CONSERVATION OF PLANT DIVERSITY ON MINE SITES (CÔTE D’IVOIRE) VROH, BI TRA … et al., (1993) and measures precipitation deficit at a variety of time scales (Guttman, 1999). The SPI uses only …