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Transport of Algal Cells in Hyporheic Sediments of the River Elbe (Germany)

✍ Scribed by Frank Kloep; Isolde Röske

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
133 KB
Volume
89
Category
Article
ISSN
1434-2944

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✦ Synopsis

Abstract

The advective transport of algal cells into the interstices of the hyporheic zone of the River Elbe was spatially and temporally heterogenous. Even deep sediment layers were reached by large phytoplankton species. Therefore, it is suggested that (i) the advective interstitial transport patterns vary between different algal sizes and morphotypes and (ii) sediment characteristics, expressed by the permeability coefficient k~f~ of porous media, affect retention and retardation of surface water algae during subsurface transport. The transport behaviour of different green algae (Chlorella sp., Scenedesmus acuminatus, Desmodesmus communis, and Pediastrum duplex) and algal sized microspheres was tested in flow‐through column experiments with hyporheic sediments. The algal cell transport was directly related to the permeability of the column sediments. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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