Dear colleagues,
We are pleased to announce the publication of a new paper in Plos One
entitled : " Seasonal and Diel Vocalization Patterns of Antarctic Blue
Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A
Multi-Year and Multi-Site Study"
Abstract:
Passive acoustic monitoring is an efficient way to provide insights on
the ecology of large whales. This approach allows for long-term and
species-specific monitoring over large areas. In this study, we examined
six years (2010 to 2015) of continuous acoustic recordings at up to
seven different locations in the Central and Southern Indian Basin to
assess the peak periods of presence, seasonality and migration movements
of Antarctic blue whales (/Balaenoptera musculus intermedia/). An
automated method is used to detect the Antarctic blue whale stereotyped
call, known as Z-call. Detection results are analyzed in terms of
distribution, seasonal presence and diel pattern of emission at each
site. Z-calls are detected year-round at each site, except for one
located in the equatorial Indian Ocean, and display highly seasonal
distribution. This seasonality is stable across years for every site,
but varies between sites. Z-calls are mainly detected during autumn and
spring at the subantarctic locations, suggesting that these sites are on
the Antarctic blue whale migration routes, and mostly during winter at
the subtropical sites. In addition to these seasonal trends, there is a
significant diel pattern in Z-call emission, with more Z-calls in
daytime than in nighttime. This diel pattern may be related to the blue
whale feeding ecology.
This article is available at :
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0163587
Kind regards,
Emmanuelle Leroy
PhD Student
University of Brest
Institut Universitaire Européen de la Mer (IUEM)
Laboratoire Géosciences Océan (LGO)
Place Nicolas Copernic - 29280 Plouzané
e-mail : emmanuelle.le...@univ-brest.fr
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antivirus Avast.
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