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Commission for the Conservation of
Southern Bluefin Tuna
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CCSBT Commission for the Conservation of Southern Bluefin Tuna logo
Commission for the Conservation of
Southern Bluefin Tuna
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The CCSBT has established a Working Group on Ecologically Related Species (ERSWG).  The CCSBT requires the ERSWG to provide information and advice based on research which:-

  • determines the nature and extent of interactions with Ecologically Related Species (ERS) in SBT fisheries;
  • determines the affects of SBT and other fisheries on ERS;
  • assesses current or potential measures to reduce ERS captures.

Reports of past meetings of the ERSWG can be found here.

In 2023 and 2024, the ERSWG convened the dedicated technical working group and conducted the Spatially Explicit Fisheries Risk Assessment (SEFRA) for seabirds as an ERSWG collaborative assessment in the areas of data provision, model development and examination of model robustness. The Report of the Technical Working Group on CCSBT collaborative risk assessment for seabird bycatch with surface longlines in the Southern Hemisphere, adopted by the Extended Commission in 2024, can be found here.

The ERSWG also has a role in the development of advice on best practice for educational activities. Education pamphlets on seabirds and sharks have been produced and distributed to SBT fishers since 2003. Technical (mainly taxonomical) aspects of these pamphlets were updated in 2011-13. These are;

Additionally, a Terms of Reference for a Technical Ecologically Related Species Working Group (ERSTech) were agreed in 2024. The role of the ERSTech is to support the work of the ERSWG by providing advice on topics of a technical nature such as:

  • A review of the effectiveness of existing bycatch mitigation measures; 
  • A review of ERSWG Data Exchange requirements;
  • Exercises aimed at quantifying the risk to ERS from SBT fisheries and vice versa;
  • Work aimed at improving ERS species identification;
  • The development of seabird bycatch targets;
  • Technical work to support the identification of high-risk areas;
  • Applicability of electronic monitoring in the context of ERS data collection;
  • The development of response protocols for high capture events;
  • Assessment of new bycatch mitigation measures; and
  • The development of ERS research proposals.