[MARMAM] New publication

Denise Risch denise.risch at noaa.gov
Fri Aug 30 05:19:44 PDT 2013


We are pleased to announce the following paper:

Risch D, Clark CW, Dugan PJ, Popescu M, Siebert U, Van Parijs SM (2013)
Minke whale acoustic behavior and multi-year seasonal and diel vocalization
patterns in Massachusetts Bay, USA. Mar Ecol Prog Ser 489:279-295

The pdf can be accessed online or via email request: denise.risch at noaa.gov

Abstract

Passive acoustic monitoring (PAM) is a rapidly growing field, providing
valuable insights in marine ecology. The approach allows for long-term,
species-specific monitoring over a range of spatial scales. For many baleen
whales fundamental information on seasonal occurrence and distribution is
still missing. In this study, pulse trains produced by the North Atlantic
minke whale, a highly mobile and cryptic species, are used to examine its
seasonality, diel vocalization patterns and spatial distribution throughout
the Stellwagen Bank National Marine Sanctuary (SBNMS), USA. Three and a
half years (2006, 2007 to 2010) of near continuous passive acoustic data
were analyzed using automated detection methods. Random forests and cluster
analyses grouped pulse trains into 3 main categories (slow-down, constant
and speed-up), with several sub-types. Slow-down pulse trains were the most
commonly recorded call category. Minke whale pulse train occurrence was
highly seasonal across all years. Detections were made from August
to November, with 88% occurring in September and October. No detections
were recorded in January and February, and only few from March to June.
Minke whale pulse trains showed a distinct diel pattern, with a nighttime
peak from approximately 20:00 to 01:00 h Eastern Standard Time (EST). The
highest numbers of pulse trains were detected to the east of Stellwagen
Bank, suggesting that minke whales travel preferably in deeper waters along
the outer edge of the sanctuary. These data show that minke whales
consistently use Stellwagen Bank as part of their migration route to and
from the feeding grounds. Unlike other baleen whales in this area they do
not appear to have a persistent year-round acoustic presence.

Best wishes,
Denise









-- 
Denise Risch
Passive Acoustic Research Group
Northeast Fisheries Science Center
166 Water Street,
Woods Hole, MA 02543*
*USA*
*denise.risch at noaa.gov <sofie.vanparijs at noaa.gov>*
*+ 1 508 495 2136*
*http://www.nefsc.noaa.gov/psb/acoustics/index.html
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