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

• Main Authors: Åsvestad, Linn, Ahonen, Heidi, Menze, Sebastian, Lowther, Andrew, Lindstrøm, Ulf, Krafft, Bjørn A.
• Format: Dataset
• Language: unknown
• Published: The Royal Society 2023
• Subjects: Ecology not elsewhere classified; Animal behaviour; Acoustics and acoustical devices; waves; Antarctic; Scotia Sea; South Orkney Islands; Antarc*; Antarctic Krill; baleen whale; Euphausia superba
• Online Access: https://dx.doi.org/10.6084/m9.figshare.24806177; https://rs.figshare.com/articles/dataset/Supplementary_soundfiles_zip_from_Seasonal_acoustic_presence_of_marine_mammals_at_the_South_Orkney_Islands_Scotia_Sea/24806177

Increased knowledge about marine mammal seasonal distribution and species assemblage from the South Orkney Islands waters is needed for the development of management regulations of the commercial fishery for Antarctic krill ( Euphausia superba ) in this region. Passive Acoustic Monitoring (PAM) data were collected during the autumn and winter seasons in two consecutive years (2016, 2017), which represented highly contrasting environmental conditions due to the 2016 El Niño event. We explored differences in seasonal patterns in marine mammal acoustic presence between the two years in context of environmental cues and climate variability. Acoustic signals from five baleen whale species, two pinniped species and odontocete spp. were detected and separated into guilds. Although species diversity remained stable over time, the ice-avoiding and ice-affiliated species dominated before and after the onset of winter, respectively, and thus demonstrating a shift in guild composition related to season. Herein, we ...