A QUANTITATIVE SAMPLER FOR SUBMERGED AQUATIC MACROPHYTES |
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| Authors: | C. HOWARD-WILLIAMS T. G. LONGMAN |
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| Affiliation: | Institute for Freshwater Studies, Swartvlei Project, Rhodes University , P.O. Box 49, Sedgefield, 6573 |
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| Abstract: | SUMMARY A simple rotary sampler, capable of quantitatively harvesting submerged aquatic macrophytes is described. The sampler can be operated from a boat and consists of a central rod with a specially designed cutting blade at the base, and collecting hooks to catch the cut material. The values obtained with this sampler were not significantly different (at the 95% level of probabality) from those obtained by manual cutting underwater. The rotary sampler has great advantages in terms of time, ease of positioning, and effort over hand cutting. |
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| Keywords: | MS 222 Anaesthetic Freshwater quality Neutralization |
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