Water velocities around water plants in chalk streams |
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| Authors: | E. J. P. Marshall D. F. Westlake |
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| Affiliation: | 1. Department of Agricultural Sciences, University of Bristol AFRC Institute of Arable Crops Research, Long Ashton Research Station, BS18 9AF, Bristol, England, U.K.
2. River Laboratory, Institute of Freshwater Ecology, Wareham, BH20 6BB, Dorset, England
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| Abstract: | Water velocities were measured around water plants in a chalk stream. Low velocities (<100 mm.s?1) were associated with stands of plants while faster flowing water (>500 mm.s?1) was found in open water and above weed beds. An indirect method of estimating mean water velocity through weed beds, using discharge measurements, revealed velocities between 40 and 140 mm.s?1, while open water velocities ranged between 200 and 370 mm.s?1. The significance of the velocities is discussed. |
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