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A Model of Algal Exports in Some Iowa Streams

Clayton D. Swanson and Roger W. Bachmann
Ecology
Vol. 57, No. 5 (Late Summer, 1976), pp. 1076-1080
Published by: Wiley
DOI: 10.2307/1941073
Stable URL: http://www.jstor.org/stable/1941073
Page Count: 5
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A Model of Algal Exports in Some Iowa Streams
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Abstract

The rivers of central Iowa carry high densities of suspended algae. Evidence is presented to support the hypothesis that these plants are derived from benthic populations on the streambed. In an analysis of several streams, a significant correlation was found between the amounts of algal chlorophylls being exported downstream and the areas of the wetted streambed upstream from the sampling points. In the warm months the algal exports amounted to 4.5 mg@?m^(-2)@?day^(-1) of chlorophyll a.

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