Ecuador, Perú Cuyabeno-Güeppí (2008) Ecuador, Perú : Cuyabeno-Güeppí ecuadorpercuyab202008alve Year: 2008 earthworm. They laid the earth down on the sand. Then they went to sleep. In the morning the patch had grown this big. The next day it was larger and the grass, plantain, and the balsa had begun to Hydrological processes Geological material, soil physical properties, landscape structure, and climate control the volume and chemical properties of water moving through forests, across hillslopes, down gullies, and into the valleys and meandering rivers of the Cuyabeno and the
Ecuador, Perú Cuyabeno-Güeppí (2008) Ecuador, Perú : Cuyabeno-Güeppí ecuadorpercuyab202008alve Year: 2008 earthworm. They laid the earth down on the sand. Then they went to sleep. In the morning the patch had grown this big. The next day it was larger and the grass, plantain, and the balsa had begun to Hydrological processes Geological material, soil physical properties, landscape structure, and climate control the volume and chemical properties of water moving through forests, across hillslopes, down gullies, and into the valleys and meandering rivers of the Cuyabeno and the Güeppí. This unique, clay-dominated region produces a hydrologic environment distinct from those found in white-sand forests and floodplains common to the lowland Amazonian floodplain. Instead of quickly infiltrating through sand-dominated soils, precipitation fails to penetrate the clay-soil surface (cf. Freeze and Cherry 1979) and flows in sheets and rivulets down any appreciable slope. On terrace tops, water forms seasonal pools due to extremely slow penetration. Though it quickly drains to low-lying points in the landscape, once in saturated valleys water often sits stagnant or slowly migrates toward an outlet stream. During this long stagnation period, clear waters turn black: they extract humic acids and tannins from the organic matter they flow through like hot water extracting organics from a tea bag (Fig. 34). Therefore, the physical and chemical properties of the terrestrial system control many of the characteristics of its associated aquatic system. Alterations of the terrestrial environment would likely have a significant impact on the properties and functioning of adjacent aquatic systems. Another important hydrologic characteristic of a clay-based ecosystem is the production of hydrologic pulses. A large proportion of rainfall quickly drains from the landscape, so valleys and rivers can receive huge volumes of water over short periods of time. As note
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