A sampling device for the invertebrate fauna of aquatic vegetation

摘要

SUMMARY.A sampler designed to provide a quantitative estimate of the benthic invertebrates of littoral/sub‐littoral zones dominated bySphagnummoss is described. Data obtained from a small oligotrophic lake at a depth of 1 m using this sampler are presented. Optimum sample size was determined and samples comprising five sampling units were found to be adequate in terms of the number of invertebrate species present and their relative abundance. Similarity of such samples was greater than 90