. Ecuador, Perú : Cuyabeno-Güeppí . So/7 formation {pedogenesis) The properties of present-day soils are the resuh of processes that depend on landscape position, climate, and the biota that develops on the original deposits of geologic material. The study region is unique in that much of its base material appears to be a rather inert form of clay (kaolinite and/or gibbsite) that does not contain appreciable amounts of weatherable minerals (nutrient sources) or a large capacity to hold nutrients (, cation exchange capacity). Therefore, in contrast to 198 RAPID BIOLOGICAL AND SOCIAL INVENTO

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. Ecuador, Perú : Cuyabeno-Güeppí . So/7 formation {pedogenesis) The properties of present-day soils are the resuh of processes that depend on landscape position, climate, and the biota that develops on the original deposits of geologic material. The study region is unique in that much of its base material appears to be a rather inert form of clay (kaolinite and/or gibbsite) that does not contain appreciable amounts of weatherable minerals (nutrient sources) or a large capacity to hold nutrients (, cation exchange capacity). Therefore, in contrast to 198 RAPID BIOLOGICAL AND SOCIAL INVENTORIES INFORME/REPORT NO. 20

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