Contribution to unravel variability in bowhead whale songs and better understand its ecological significance

Abstract Since the first studies on bowhead whale singing behaviour, song variations have been consistently reported. However, there has been little discussion regarding variability in bowhead whale singing display and its ecological significance. Unlike the better studied humpback whales, bowhead w...

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Autores principales:	F. Erbs, M. van der Schaar, J. Weissenberger, S. Zaugg, M. André
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d7a43dcb59e84c9d9a90e5754985e36c
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spelling	oai:doaj.org-article:d7a43dcb59e84c9d9a90e5754985e36c2021-12-02T15:13:01ZContribution to unravel variability in bowhead whale songs and better understand its ecological significance10.1038/s41598-020-80220-52045-2322https://doaj.org/article/d7a43dcb59e84c9d9a90e5754985e36c2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80220-5https://doaj.org/toc/2045-2322Abstract Since the first studies on bowhead whale singing behaviour, song variations have been consistently reported. However, there has been little discussion regarding variability in bowhead whale singing display and its ecological significance. Unlike the better studied humpback whales, bowhead whales do not appear to share songs at population level, but several studies have reported song sharing within clusters of animals. Over the winter season 2013–2014, in an unstudied wintering ground off Northeast Greenland, 13 song groups sharing similar hierarchical structure and units were identified. Unit types were assessed through multidimensional maps, showing well separated clusters corresponding to manually labelled units, and revealing the presence of unit subtypes. Units presented contrasting levels of variability over their acoustic parameters, suggesting that bowhead whales keep consistency in some units while using a continuum in values of frequency, duration and modulation parameters for other unit types. Those findings emphasise the need to account for variability in song analysis to better understand the behavioural ecology of this endangered species. Additionally, shifting from song toward units or phrase-based analysis, as it has been suggested for humpback whales, offers the opportunity to identify and track similarities in songs over temporal and geographical scales relevant to population monitoring.F. ErbsM. van der SchaarJ. WeissenbergerS. ZauggM. AndréNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q F. Erbs M. van der Schaar J. Weissenberger S. Zaugg M. André Contribution to unravel variability in bowhead whale songs and better understand its ecological significance
description	Abstract Since the first studies on bowhead whale singing behaviour, song variations have been consistently reported. However, there has been little discussion regarding variability in bowhead whale singing display and its ecological significance. Unlike the better studied humpback whales, bowhead whales do not appear to share songs at population level, but several studies have reported song sharing within clusters of animals. Over the winter season 2013–2014, in an unstudied wintering ground off Northeast Greenland, 13 song groups sharing similar hierarchical structure and units were identified. Unit types were assessed through multidimensional maps, showing well separated clusters corresponding to manually labelled units, and revealing the presence of unit subtypes. Units presented contrasting levels of variability over their acoustic parameters, suggesting that bowhead whales keep consistency in some units while using a continuum in values of frequency, duration and modulation parameters for other unit types. Those findings emphasise the need to account for variability in song analysis to better understand the behavioural ecology of this endangered species. Additionally, shifting from song toward units or phrase-based analysis, as it has been suggested for humpback whales, offers the opportunity to identify and track similarities in songs over temporal and geographical scales relevant to population monitoring.
format	article
author	F. Erbs M. van der Schaar J. Weissenberger S. Zaugg M. André
author_facet	F. Erbs M. van der Schaar J. Weissenberger S. Zaugg M. André
author_sort	F. Erbs
title	Contribution to unravel variability in bowhead whale songs and better understand its ecological significance
title_short	Contribution to unravel variability in bowhead whale songs and better understand its ecological significance
title_full	Contribution to unravel variability in bowhead whale songs and better understand its ecological significance
title_fullStr	Contribution to unravel variability in bowhead whale songs and better understand its ecological significance
title_full_unstemmed	Contribution to unravel variability in bowhead whale songs and better understand its ecological significance
title_sort	contribution to unravel variability in bowhead whale songs and better understand its ecological significance
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d7a43dcb59e84c9d9a90e5754985e36c
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Contribution to unravel variability in bowhead whale songs and better understand its ecological significance

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