Concept
Unspecified naturalists {rectangular} dredge
| URI | http://vocab.nerc.ac.uk/collection/L22/current/NETT0190/ |
|---|---|
| Within Vocab | SeaVoX Device Catalogue |
| Preferred Label | Unspecified naturalists {rectangular} 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. |
| Broader |
L05:
benthos samplers L05: sediment dredges |
| Related |
B75:
Unspecified L35: Unknown |
| Note | accepted |
| Deprecated | false |
| Alternative Label | Natlst dredge |
| Version | 1 |
| Has Current Version | http://vocab.nerc.ac.uk/collection/L22/current/NETT0190/1/ |
| Authored On | 2019-12-02 09:02:24 |
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