Substrate, Artificial (1) A device placed in the water for a specified period of time that provides living spaces for a multiplicity of organisms, for example, glass slides, concrete blocks, multi-plate samplers, or rock baskets, used primarily to collect organisms in areas where the physical habitat is limiting or cannot be adequately sampled using conventional methods. (2) A device which is purposely placed in a stream or lake for colonization of organisms. The artificial substrate simplifies the community structure by standardizing the substrate from which each sample is taken. Examples of artificial substrates are basket samplers (made of wire cages filled with clean streamside rocks) and multiplate samplers (made of hardboard) for benthic organism collection, and plexiglass strips for periphyton collection.
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Author of the Water Words Dictionary source of text: Gary A. Horton
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