Dear colleagues,
We are pleased to share the publication of a new paper on killer whale calls
around Iceland.
Selbmann A, Deecke VB, Filatova OA, Fedutin ID, Miller PJO, Simon M, Bowles AE,
Lyrholm T, Lacey C, Magnúsdóttir EE, Maunder W, Wensveen PJ, Svavarsson J,
Samarra FIP. Call type repertoire of killer whales (Orcinus orca) in Iceland
and its variation across regions. Marine Mammal Science
https://doi.org/10.1111/mms.13039
Abstract
Killer whales (Orcinus orca) have group-specific call repertoires that can be
used to track groups and populations using passive acoustic monitoring. To
provide a detailed description of the Icelandic killer whale repertoire and its
variation, we analyzed acoustic data collected in five locations between 1985
and 2016. Calls were classified manually, and CART and random forest analyses
were employed to validate the manual classification. A total of 91 call
categories (including call types and subtypes) were defined. Most call
categories were recorded in more than one location, with the highest proportion
shared between herring grounds in Vestmannaeyjar (South) and Breiðafjörður
(West). However, both locations included call categories that were not recorded
elsewhere in Iceland. Recordings from past herring wintering grounds in eastern
Iceland included few call categories that matched other locations. Sample sizes
from Reykjanes (Southwest) and Skjálfandi (North) were small and did not
include unique call categories. The relative occurrence of call categories in
Vestmannaeyjar changed little over a 14-year period (2002–2016), although
shorter-term changes between years were observed that appeared to correlate to
changes in individuals identified. This comparison of acoustic repertoires
provides valuable information on the social structure and movement patterns of
herring-eating killer whales around Iceland.
Available at: https://onlinelibrary.wiley.com/doi/full/10.1111/mms.13039
Soon to be Open Access but in the meantime feel free to get in touch for a PDF.
Anna Selbmann
PhD Candidate
Faculty of Life and Environmental Sciences
University of Iceland
Sturlugata 7
101 Reykjavík, Iceland
selbmann.a...@gmail.com <mailto:selbmann.a...@gmail.com>
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