Elemental Concentrations in Tropical Forests and Soils of Northwestern Colombia

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Abstract
The chemical composition of leaves, epiphytes, epiphyllae, litter and soil at 6 locations in northwestern Colombia was examined. The mean concentration of Na, P, and Sr was significantly different for location. Mean concentrations by vegetation and soil compartments combined were different for all elements studied except Mn and Zn. However, considering vegetation compartments alone, significant differences between compartments were observed only for K and Cs. For soils alone, location effect was significant for all elements except Na and K. Correlation analyses of vegetation showed significant relationships between Na and Sr, Cu, Fe and Mn, and Fe and Pb. The correlation matrix for soils showed significant correlation in C, Mg, Na and Sr, Co and Fe, and Pb and Mn. These data were interpreted as showing a close correspondence between soils and geological substrates, with very little relationship between soils and vegetation.

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