Concept
Semi-Balloon Otter Trawl
URI | http://vocab.nerc.ac.uk/collection/L22/current/NETT0193/ |
---|---|
Within Vocab | SeaVoX Device Catalogue |
Preferred Label | Semi-Balloon Otter Trawl |
Definition | A funnel-shaped net designed to trap organisms at its closed-end while being trawled along the seafloor. It is composed of a non-fixed wide mouth attached to the main wire and held open horizontally by an otter board at each side; a tickler chain is mounted across the lower edge of the net to keep it in contact with the ground, whereas a float fixed to the top of the net ensures its vertical spread. Typically, a semi-balloon otter trawl has a mouth size of approximately 2m x 8.5m; the net has a fine mash and it is mounted to a head rope of maximum 14m in length. This type of trawl is ideal for deep-water sampling of megafauna near the seafloor, mostly for conducting species diversity, abundance and biomass studies. The semi-balloon otter trawl is also known as OTSB, OTSB 14 and Marinovitch Trawl. Ref: Methods for the Study of Marine Benthos, fourth edition by WILEY Blackwell. |
Broader |
L05:
demersal trawl nets |
Related |
B75:
Unspecified L35: Unknown |
Narrower |
L22:
Semi-Balloon Otter Trawl (14 m headrope; single-warp operation) - Merrett and Marshall (1980) |
Note | accepted |
Deprecated | false |
Alternative Label | OTSB |
Version | 1 |
Has Current Version | http://vocab.nerc.ac.uk/collection/L22/current/NETT0193/1/ |
Authored On | 2020-03-09 19:18:14 |
Alternate Profiles
Different views and formats:
Alternate Profiles ?Different Media Types (HTML, text, RDF, JSON etc.) and different information model views, profiles, are available for this resource.