Seasonal acoustic presence of marine mammals at the South Orkney Islands, Scotia Sea.

All predictors except SIC and SST showed a strong significant effect on the acoustic presence of blue whale in 2017, while in 2016 only SSH and month were highly significant. 4.

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In our study, minke whale acoustic presence showed a positive trend with increasing sea ice, and thus, these animals presumably moved into the audible area as the sea ice edge moved northwards and closer to the AURAL.

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Though 2016 also displayed an increasing trend in the first part of the year, the overall vocal activity between months was noticeably lower and less variable (min: 136 h, max: 396 h) than in 2017 (min: 52 h, max: 715 h).

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