PHOSPHORUS IN FLOWING WATERS

The sources of phosphorus to flowing waters are reviewed on the basis of point of origin and quantities. Phosphorus within a stream is assimilated out of the flowing water mass. Biota is the principal agent of assimilation which occurs in both autotrophic and saprophytic ecosystems. The rate constant of assimilation can be estimated. After removal from the flowing water, the phosphorus is temporarily stored in bottom deposits or transported as a portion of the stream's bed-load. Long-term storage is effected when the phosphorus is buried in deltas, or deposited on flood plains. © 1968.