Dear MARMAM Members,
On behalf of all co-authors, I am pleased to announce our new
publication "Characterizing offshore polar ocean soundscapes using
ecoacoustic intensity and diversity metrics”
The full article is available on
https://royalsocietypublishing.org/doi/10.1098/rsos.231917
Mattmüller, R.M., Thomisch, K., Hoffman, J.I., Van Opzeeland, I.
(2024)."Characterizing offshore polar ocean soundscapes using
ecoacoustic intensity and diversity metrics". Royal Society Open Science
11:231917. https://doi.org/10.1098/rsos.231917
Abstract:
Polar offshore environments are considered the last pristine
soundscapes, but accelerating climate change and increasing human
activity threaten their integrity. In order to assess the acoustic state
of polar oceans, there is the need to investigate their soundscape
characteristics more holistically. We apply a set of 14 ecoacoustic
metrics (EAMs) to identify which metrics are best suited to reflect the
characteristics of disturbed and naturally intact polar offshore
soundscapes. We used two soundscape datasets: (i) the Arctic eastern
Fram Strait (FS), which is already impacted by anthropogenic noise, and
(ii) the quasi-pristine Antarctic Weddell Sea (WS). Our results show
that EAMs when applied in concert can be used to quantitatively assess
soundscape variability, enabling the appraisal of marine soundscapes
over broad spatiotemporal scales. The tested set of EAMs was able to
show that the eastern FS, which is virtually free from sea ice, lacks
seasonal soundscape dynamics and exhibits low acoustic complexity owing
to year-round wind-mediated sounds and anthropogenic noise. By contrast,
the WS exhibits pronounced seasonal soundscape dynamics with greater
soundscape heterogeneity driven in large part by the vocal activity of
marine mammal communities, whose composition in turn varies with the
prevailing seasonal sea ice conditions.
If you have any questions, please reach out.
Cheers,
Ramona
--
*Ramona Mattmüller|*PhD student
/
(she/her)
/ /
Ocean Acoustics Group, Alfred Wegener Institute Helmholtz Centre for
Polar and Marine Research
Klußmannstr. 3d, 27570 Bremerhaven
phone: 0471-4831-2303
Department of Animal Behaviour, University of Bielefeld, Postfach
100131, 33501 Bielefeld
/
_______________________________________________
MARMAM mailing list
[email protected]
https://lists.uvic.ca/mailman/listinfo/marmam
