Ekman dredge

Ekman dredge

[′ek·mən ‚drej]
(engineering)
A special type of dredge for sampling sediment that is fitted with opposable jaws operated by a messenger traveling down a cable to release a spring catch.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Prior to routine larval and adult sampling, a survey of the entire habitat was conducted for midge fauna by collecting benthic samples with a 15 x 15 cm Ekman dredge from a boat at ca.
For temephos and Bti evaluations, 3 Ekman dredge samples were randomly collected from each plot immediately prior to treatment and at post-treatment d 3, 7, 14, 21, and 28 (temephos), and 2, 6, 13, 20, and 30 d (Bti).
On 28 January 1995, two specimens of Cordylophora lacustris were recovered from Ekman dredge samples collected from the upper riverine portion of Livingston Reservoir in east Texas.
Three sampling methods were used for each location during each sampling period, which included Ekman dredges, dip netting, and black-light trapping.