A portable hand-operated sampler for shallow-water surface sediments with special reference to epipelic communities |
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| Authors: | Hong Yang Roger J Flower |
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| Institution: | (1) Environmental Change Research Centre, University College London, Pearson Building, Gower Street, London, WC1E 6BT, UK |
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| Abstract: | A convenient, portable, hand-operated surface-sediment sampler for use in shallow water is described. Collection of replicable,
undisturbed surface sediment samples from shallow-water locations is made simple. The sampler is highly portable for use at
remote sites and can be operated by one person. It is especially useful for sampling in the 0.3–1.3 m water depth range where
other samplers are often unsuccessful. This sampler consists of a PVC tube (about 33-cm length, 7.1-cm diameter) attached
to a 1-m-long supporting rod. A lever system is used to close off the PVC core tube. In the open position, the core tube is
inserted into the sediment to an optimal depth (typically 1-cm) so that a 1-cm disc of surface sediment is enclosed. This
disc is then isolated by operating the lever and tube closure plate. The sampler and sediment sample (with an intact epipelon
biofilm) are removed carefully so that most of the enclosed water drains away and the sample is retained intact. |
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