Dalhousie University and University of New Brunswick
Shediac Valley, Gulf of St. Lawrence, Canada, May 2026
Study objectives
A Teledyne Webb Research Slocum G3s glider equipped with a passive acoustic listening device (DMON/LFDCS) was deployed in the Shediac Valley region of the Gulf of St. Lawrence (GoSL) for a 30-day mission. The purpose of this mission is to monitor for North Atlantic right whales and study the impact of environmental changes on zooplankton community composition and concentration at hourly to daily time scales.
Principal Investigators: Kim Davies (University of New Brunswick)
Analysts: Halyna Klymentieva (University of New Brunswick)
Platform location:
Analyst-reviewed species occurrence maps:
Daily analyst review:
| | Detected |
| Possibly detected |
| Not detected |
Time series:
The figure above shows daily whale occurrence for sei, fin, right
and humpback whales derived from analyst-reviewed call detections.
Occurrence is measured as the percentage of 15-minute summary periods
during a single day when whale calls are detected (red; periods when
the evidence for whale presence is convincing) or possibly detected
(yellow; periods when there is evidence for whale presence, but it is not
completely convincing). A summary period is a 15-minute period over which
an analyst determines if whales are detected, possibly detected or not
detected based on the protocol described in Baumgartner et al. (2019)
and Wilder et al. (2023). Please note that these time series should not
be considered an indication of whale abundance.
Diel plot:
The figure above shows when sei, fin, right and humpback whales were
detected (red), possibly detected (yellow), or not detected (gray) for
every 15-minute summary period reviewed by the analyst. The data are arranged
by hour of day (x axis) for each day of the deployment (y axis) to allow
evaluation of day-night (i.e., diel) patterns. The white lines indicate the
local time of sunrise and sunset.
Recent background noise:
Links to detailed information:
Automated detection data
Analyst notes
DMON/LFDCS diagnostics
Platform diagnostics
Questions
Please email Mark Baumgartner at mbaumgartner@whoi.edu. For a general desciption of the detection system and the autonomous platforms, visit robots4whales.whoi.edu.
Acknowledgements
The glider was expertly prepared by Teledyne Webb Research and the Coastal Environmental Observation Technology and Research (CEOTR) group (ceotr.ocean.dal.ca). Financial support for the deployment and operation of the glider was provided by Fisheries and Oceans Canada. Additional logistical support for the mission was provided by Woods Hole Oceanographic Institution, University of New Brunswick, Teledyne Webb Research, Dalhousie University, Ocean Tracking Network, and the Ocean Frontiers Institute.
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