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Predicting bycatch hotspots for endangered leatherback turtles on longlines in the Pacific Ocean
Roe, J.H.; Morreale, S.J.; Paladino, F.V.; Shillinger, G.L.; Benson, S.R.; Eckert, S.A.; Bailey, H.; Tomillo, P.S.; Bograd, S.J.; Eguchi, T.; Dutton, P.H.; Seminoff, J.A.; Block, B.A.; Spotila, J.R. (2014). Predicting bycatch hotspots for endangered leatherback turtles on longlines in the Pacific Ocean. Proc. - Royal Soc., Biol. Sci. 281(1777): 8. dx.doi.org/10.1098/rspb.2013.2559
In: Proceedings of the Royal Society of London. Series B. The Royal Society: London. ISSN 0962-8452; e-ISSN 1471-2954
|   |
| Trefwoorden |
Dermochelys coriacea (Vandelli, 1761) [WoRMS]
Marien/Kust |
| Author keywords |
critically endangered species; fisheries bycatch; marine conservation;marine turtles; migratory pelagic vertebrate; satellite tracking |
| Auteurs | | Top |
- Roe, J.H.
- Morreale, S.J.
- Paladino, F.V.
- Shillinger, G.L.
- Benson, S.R.
|
- Eckert, S.A.
- Bailey, H.
- Tomillo, P.S.
- Bograd, S.J.
- Eguchi, T.
|
- Dutton, P.H.
- Seminoff, J.A.
- Block, B.A.
- Spotila, J.R.
|
| Abstract |
Fisheries bycatch is a critical source of mortality for rapidly declining populations of leatherback turtles, Dermochelys coriacea. We integrated use-intensity distributions for 135 satellite-tracked adult turtles with longline fishing effort to estimate predicted bycatch risk over space and time in the Pacific Ocean. Areas of predicted bycatch risk did not overlap for eastern and western Pacific nesting populations, warranting their consideration as distinct management units with respect to fisheries bycatch. For western Pacific nesting populations, we identified several areas of high risk in the north and central Pacific, but greatest risk was adjacent to primary nesting beaches in tropical seas of Indo-Pacific islands, largely confined to several exclusive economic zones under the jurisdiction of national authorities. For eastern Pacific nesting populations, we identified moderate risk associated with migrations to nesting beaches, but the greatest risk was in the South Pacific Gyre, a broad pelagic zone outside national waters where management is currently lacking and may prove difficult to implement. Efforts should focus on these predicted hotspots to develop more targeted management approaches to alleviate leatherback bycatch. |
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