Concept
Unspecified naturalists {rectangular} dredge
URI | http://vocab.nerc.ac.uk/collection/L22/current/NETT0190/ | |
---|---|---|
Within Vocab | SeaVoX Device Catalogue | |
Alternative Labels | Natlst dredge | |
Definition | An instrument designed for the collection of benthic organisms and bottom material on a variety of grounds. It consists of a rectangular dredge frame, two dredge arms and a triangular mesh net, usually about half as deep as it is wide. The dredge frame varies in length, depending on the size of the towing vessel: 300-380 mm for small boats; 450-600 mm for larger boats; and 750-1300 mm for trawlers. Typically, one dredge arm is attached directly to the tow rope, while the other is attached by a weak link, such as twine, to release the dredge should it become stuck on the seabed. The collection net may be lined with an inner bag of non-impervious material for the collection of sediment. | |
Date | 2019-12-02T09:02:24 | |
Identifier | SDN:L22::NETT0190 | |
Note | accepted | |
Has Current Version | 1 | |
version | 1 | |
inScheme | http://vocab.nerc.ac.uk/scheme/SDNDEV/current/ | |
Broader | L19:SDNKG17 | sensor_model |
L05:24 | benthos samplers | |
L05:60 | sediment dredges | |
Related | B75:UNSPEC | Unspecified |
L35:MAN0002 | Unknown |
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