“…The average inventory of beryllium-7 was 211 Bq.m -2 with a spatial variability around of 23%. Andrello et al (2004b) presented spatial variability of cesium-137 in Londrina region as about 19%. Although, cesium-137 and beryllium-7 has different origin, the spatial variability represents the topographic, microtopographic and pluviometric variability of the region.…”