Abstract
Deposition of phosphorus from the atmosphere was measured weekly over 7 annual cycles in the montane region of Colorado, USA. Deposition of phosphorus consistently reached a sharp peak in early summer, near the beginning of maximum biological activity. The peak is associated with soluble phosphorus capable of passing through a filter. Pollen studies show that the peak cannot be accounted for by leaching of phosphorus from pollen, and the amounts of miscellaneous mineral and organic particulate materials are too small to account for the peak. The study thus indicates transport of filterable, water-soluble phosphorus substance, probably of biogenic origin, in large amounts over a short period of time. This transport mechanism, heretofore unsuspected, may account for significant long-distance phosphorus transport.
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