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Marine and Freshwater Research Marine and Freshwater Research Society
Advances in the aquatic sciences
RESEARCH ARTICLE

Efficiency estimates of a stream Benthos suction sampler

IO Growns

Australian Journal of Marine and Freshwater Research 41(5) 621 - 626
Published: 1990

Abstract

The efficiency of a modified Boulton suction sampler was tested in 2 riffle zones, using multiple removals. Macroinvertebrate fauna was sampled with approximately 70% efficiency on first removal, while organic matter was sampled with 55% efficiency. Sampling efficiencies for specific taxa ranged from 86% (Plecoptera) to 66% (Chironomidae) and 59% (Trichoptera). The results of this study indicate that sampling efficiency can be improved either by taking multiple samples at one location or by increasing the time spent disturbing the substratum and pumping water from the stand pipe. The results also indicate the importance of conducting pilot studies to determine the efficiency of a sampler at sites where the efficiency is likely to be different.

https://doi.org/10.1071/MF9900621

© CSIRO 1990

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