How are benthic invertebrates collected from the Great Lakes?

Date:2023-01-06
Benthic invertebrates can be collected from the Great Lakes using a van Veen grab, corer, sled, and/or dredge towed behind a boat. These tools can be used to scoop up bottom-dwelling organisms from the sediment and/or water column. Collecting with a net, scraping or suctioning of the substrate can also be effective. Usually, multiple collection techniques are used to generate a taxonomically varied sample of benthic invertebrates.
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