PELACUS 0314 CRUISE REPORT
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AuthorsCarrera-López, P. (Pablo); Riveiro, I. (Isabel); Santos, M.B. (María Begoña); Louzao-Arsuaga, M. (Maite); Murcia, J.L. (José Luis); Valeiras, J. (Julio); García-Barcelona, S. (Salvador); Vázquez, J.A. (José Antonio); Preciado-Ramírez, M.I. (María Izaskun)
KeywordsAcoustic abundance estimation
Bay of Biscay
pelagic ecosystem acoustic-trawl survey
The Spanish acoustic-trawl times PELACUS 0314 was carried out on board R/V Miguel Oliver from 9th March to 8th April, covering the north Spanish waters (Atlantic and Bay of Biscay) from the coast to the 1000 m isobath on a systematic grid with tracks 8 nmi apart and equally spaced. Acoustic , fishing stations, fish egg counting, microplastic, and apical predators observations were done during daytime whilst the oceanographic characterisation was done during night time. A total of 1903 nautical miles were steamed, 1075 corresponding to the survey track. Besides 52 fishing stations were performed (Figure 2). PELCACUS 0314 was characterised by relative stable weather conditions along the surveyed area. Besides, there was an important increase in backscattering energy as compared with the previous year. This resulted in an increase of the biomass estimated for the majority of the fish species, but still sardine is at lowest productivity ever recorded. Good recruitment would be observed in ...
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