Limit the maximum weight and/or size of bobbins on the footrope
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
The footrope consists of a rope, wire or chain which is attached to the bottom front of the net (the lower edge of the net mouth) to provide weight. Bobbins, rollers or other hard material encircle or are tied along the footrope to bounce or pivot over seabed obstructions preventing the footrope and net from snagging on the seabed. Footrope configuration varies with trawls and the commercial species targeted, and can affect the level of negative impacts on the seabed and subtidal benthic invertebrates (Hannah et al. 2013). Large, heavy bobbins and rollers can damage the seabed, therefore affecting subtidal benthic invertebrates. Setting limits on their weight and/or size can potentially reduce damage to the seabed and associated impacts on subtidal benthic invertebrates.
Hannah R.W., Lomeli M.J. & Jones S.A. (2013) Direct estimation of disturbance rates of benthic macroinvertebrates from contact with standard and modified ocean shrimp (Pandalus jordani) trawl footropes. Journal of Shellfish Research, 32, 551–558.