Study

The influence of environmental variables and mitigation measures on seabird catch rates in the Japanese tuna longline fishery within the Australian Fishing Zone, 1991-1995

  • Published source details Brothers N., Gales R. & Reid T. (1999) The influence of environmental variables and mitigation measures on seabird catch rates in the Japanese tuna longline fishery within the Australian Fishing Zone, 1991-1995. Biological Conservation, 88, 85-101.

Actions

This study is summarised as evidence for the following.

Action Category

Use streamer lines to reduce seabird bycatch on longlines

Action Link
Bird Conservation
  1. Use streamer lines to reduce seabird bycatch on longlines

    An analysis of data from tuna vessels fishing in Australian waters in 1991-5 (Brothers et al. 1999) does not provide conclusive evidence for the effectiveness of streamer lines. Voyages with streamer lines caught more birds than those without, but when catch rates for individual seasons and areas were analysed, catch rates were lower with streamer lines, but not significantly so. The authors argue that the lack of conclusive evidence is due to the lack of a controlled analysis and the disproportionate use of streamer lines in areas with higher catch rates and during the day (see ‘Set longlines at night to reduce seabird bycatch’). A total of 3,477 line sets were studied.

     

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