The species accumulation curves sampled in the savanna area from the Experimental Field of the Brazilian Agricultural Research Corporation – EMBRAPA, municipality of Macapá, Amapá State, northern Brazil, for each of the sampled physiognomies: A grassland savanna B scrub grassland savanna C parkland savanna D open woodland savanna, based on the number of individuals representing the observed (Sobs) and estimated species richness (Jackknife 1).