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ALWTRT gear marking subgroup

Join the ALWTRT marking subgroup to discuss improving gear marking detection on whales and assigning gear to fisheries. Discover consensus areas and new marking options. Explore implementing regulations and research needs for the future.

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ALWTRT gear marking subgroup

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  1. ALWTRT gear marking subgroup By David Morin, John Higgins, Mark Minton, Marisa Trego

  2. ALWTRT marking subgroup goals and guidelines • Goals: • Improve our ability to detect gear markings on entangled whales, and be able to assign retrieved gear to a fishery and area fished. • Identify areas of broad consensus and associated gear marking options for the ALWTRT’s full consideration during the April meeting. • What can be implemented with the next set of regulations and what should be researched for future regulations.

  3. ALWTRT marking subgroup goals and guidelines Agenda and guidelines: • Attendance • Meeting is for ALWTRT members to discuss options; there will be time at the end of the meeting for the public to comment. • The webinar will be recorded so other ALWTRT members can review the discussion and presentation. • Please limit background noise and mute phone when appropriate. • Any members of the public who are also recording? Any press?

  4. ALWTRT marking subgroup members • Beth Casoni • Michael Sargent • ReginaAsmutis-Silvia • Dennis Heineman • Terry Alexander • Cheri Patterson • BobNudd • Scott Landry • Bill McLellan • Amy Knowlton • Patrice McCarron • SarahCotnoir

  5. Potential gear marking supplements to existing plan Mark exempted areas – 68% (2009-2018) of all recovered/observed gear still has an unknown origin for all species (71% for right whales). A significant amount of vertical lines are in exempted areas and marking the gear will offer tangible proof of origin. Pros – Fisheries may prove they are not threat to whales and future modifications may be limited to specific fisheries. Cons – Increased time and effort by fishermen. Unique markings have to be developed with limited color palette.

  6. Potential gear marking supplements to existing plan Additional large (3 feet) vertical line colored mark completely within 1 fathom of surface buoy/system. 58% of all entanglement cases (2009-2018) have a surface buoy/system associated with it. The increased size of the mark will also increase the possibility of observing the mark from various platforms, including aerial. Law enforcement (NEFMC has endorsed) has requested a mark near the surface system as enforcement is difficult. Pros – Almost all gear marks have been identified through recovered gear, which is a rare event. A large mark near a portion of gear that is often involved should increase the percentage of identified gear. Law enforcement will be easier. Cons – Increased time and effort by fishermen. Unique markings have to be developed with limited color palette.

  7. Potential gear marking supplements to existing plan Increase the spatial resolution of the existing ‘Red’ trap/pot mark in the northeast. 61% of U.S. gear with recovered (2009-2018) ALWTRP marks are red. (n=26 – Red (16), Red + Yellow (6), Blue (2), Red + White (1), Red + Blue or Black (1) Pros – Specific regions may prove they are not threat to whales and future modifications may be limited to specific areas. Cons – Unique markings have to be developed with limited color palette. Increased time and effort by fishermen.

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