Title: SUBSURFACE AND SURFACE SAMPLING OF BENTHIC INVERTEBRATES IN TWO STREAM1, 2
Abstract: A new subsurface sampling technique for collecting macroinvertebrates in gravel‐bottom streams is described. The cylinder sampler collects all species whose presence is indicated by a Surber sampler, but the percentage composition of the population sampled is different. With this method, a far larger number of benthic invertebrates is obtained, making it possible to reduce the number of samples to 10 or less and yet obtain estimates within 20% of the true mean of the benthic invertebrate population inhabiting the top 17.5 cm of substrate.