[MARMAM] [Marmam] New publication - Harbour and Grey Seal Vocalisations in Offshore Waters (Ireland and UK)

Yaiza Pilar Pozo Galvan yaiza-pilar.pozo-galvan at imbrsea.eu
Wed Jan 17 08:32:47 PST 2024


Dear MARMAM community,

My co-authors and I are pleased to share our recent *open-access
publication*: Static Acoustic Monitoring of Harbour (*Phoca vitulina*) and
Grey Seals (*Halichoerus grypus*) in the Malin Sea: A Revolutionary
Approach in Pinniped Conservation.

Published in the Journal of Marine Science and Engineering, you can find it
following the link: https://www.mdpi.com/2077-1312/12/1/118

*Abstract:*
Harbour and grey seals rely on acoustic signals to mate, socialise and
defend their territory. Previous studies have focused on their behaviour,
movements and communication from the coast, leaving a knowledge gap in the
offshore environments, and therefore being unable to determine the proper
use they give to those areas and the risks they face around them. Acoustic
data collected with a SoundTrap were analysed to assess the detectability
of both species in the Malin Sea. Vocalisations were classified based on
aural and visual features, as well as using non-parametric classification
trees. Differences in the vocalisation rate of grey seals per diel, season
and tidal state were also assessed through Generalised Linear Mixed Models,
obtaining significant results, and finding similarities in the
vocalisations of grey seals with the Scottish and Irish populations. A
small sample of adult and pup harbour seals was detected, and differences
in call type and number of detections per type were found across the
seasons. These results show the importance of the area for both species,
and lay the foundations for future studies, which will help to implement
proper conservation measures such as Marine Protected Areas.

Thank you in advance.

Best regards,

Yaiza
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