[MARMAM] New paper on North Atlantic right whale vocalizations in the central Gulf of Maine

Jacqueline Bort jacquelinebort at gmail.com
Tue Feb 3 08:09:44 PST 2015

Dear MARMAM subscribers,

We are pleased to announce the publication of the following paper in
Endangered Species Research.

Bort J, Van Parijs SM, Stevick PT, Summers E, Todd S (2015) North Atlantic
right whale *Eubalaena glacialis *vocalization patterns in the central Gulf
of Maine from October 2009 through October 2010. Endang Species Res

ABSTRACT: The central Gulf of Maine was recently identified as a persistent
wintering ground and potential mating ground for non-calving North Atlantic
right whale *Eubalaena glacialis *based on aerial survey data. However,
these surveys were limited by bad weather and light. Here, we use passive
acoustic monitoring to examine the long-term persistence of right whales in
this area throughout a nearly continuous period from October 2009 through
October 2010. Three archival marine acoustic recording units were deployed
in the Outer Fall/central Gulf of Maine. The data were manually reviewed
for right whale up-calls and gunshots to investigate seasonal and diel
patterns. Up-calls and gunshots occurred seasonally, with the most calls
recorded from October through January and fewer calls detected from
February through July, increasing again in August through October. Up-calls
were most frequent in November, and gunshots in December. There was a clear
bimodal diel pattern in up-calls, with the majority of calls occurring
between 04:00 through 08:00 h and 13:00 through 22:00 h. There was a clear
peak in diel distribution of gunshots, with the majority of calls occurring
between 16:00 and 22:00 h. Our data demonstrate the continuous presence of
right whales in the central Gulf of Maine during the winter months. The
rate of gunshots during winter months in Outer Fall supports the hypothesis
that male advertisement and/or right whale mating behavior may be taking
place in this region at that time.

The article is open access and may be found at the link below:


Alternatively, a PDF can be requested at: jacquelinebort at gmail.com


Jacqueline Bort Thornton


"In the end we will conserve only what we love. We love only what we
understand. We will understand only what we are taught." -Baba Dioum,1968

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