Study

Streamer lines and underwater setting reduce bycatch mortality of northern fulmars Fulmarus glacialis in a longline fishery off Norway

  • Published source details Løkkeborg S. (1998) Seabird by-catch and bait loss in long-lining using different setting methods. ICES Journal of Marine Science, 55, 145

Actions

This study is summarised as evidence for the following.

Action Category

Set lines underwater to reduce seabird bycatch

Action Link
Bird Conservation

Use streamer lines to reduce seabird bycatch on longlines

Action Link
Bird Conservation
  1. Set lines underwater to reduce seabird bycatch

    A randomised, replicated and controlled study off the coast of Norway (Løkkeborg 1998) found that seabird bycatch in May 1996 was significantly lower when an underwater setting funnel was used to set longlines (28 birds caught, 0.49 birds/1,000 hooks for 13 line sets) than in control sets without the funnel (99 birds caught, 1.75 birds/1,000 hooks for 13 line sets). Lines were set during daylight and bycatch was mainly northern fulmars Fulmarus glacialis.

     

  2. Use streamer lines to reduce seabird bycatch on longlines

    A replicated, controlled study off the coast of Norway (Løkkeborg 1998) found that seabird bycatch on 13 days in May 1996 was significantly lower for 13 daytime line sets when a streamer line was used (two birds caught, 0.04 birds/1,000 hooks), compared to control sets with no streamer line (99 birds, 1.75 birds/1,000 hooks). Bycatch was mainly northern fulmars Fulmarus glacialis and the streamer line was 8 mm nylon with 8 cm wide, 0.5-3 m long yellow tarpaulin streamers at 5.1 m intervals.

     

Output references

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