1985•Internationale Revue der gesamten Hydrobiologie und HydrographieRequires access

The Epipelic Algal Flora of the River Wye System, Wales, U.K. 1. Productivity and Total Biomass Dynamics

Samir E. Antoine, Kathryn Benson‐Evans

Abstract

Abstract The spatial and temporal fluctuations of the phytopigment content, “potential” primary productivity and total biomass of the epipelic algae of the River Wye System were studied during June 1979 to May 1981. Chlorophyll‐a and productivity values showed a downstream increase, much less obvious for the total biomass. Phaeophytin‐a values followed almost similar spatial and temporal fluctuations to those of chlorophyll‐a. High chlorophyll‐a productivity and total biomass values were recorded during warmer months due to favourable environmental conditions for algal growth, but lower values during unfavourable winter and flood periods.

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Key concepts: Productivity, Biomass (ecology), Environmental science, Chlorophyll a, Primary productivity, Algae, Chlorophyll, Agronomy