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Near real-time marine mammal monitoring from gliders: Practical challenges, system development, and management implications
- Source :
- The Journal of the Acoustical Society of America. 148:1215-1230
- Publication Year :
- 2020
- Publisher :
- Acoustical Society of America (ASA), 2020.
-
Abstract
- In 2017, an endangered North Atlantic right whale mortality event in the Gulf of St. Lawrence, Canada, triggered the implementation of dynamic mitigation measures that required real-time information on whale distribution. Underwater glider-based acoustic monitoring offers a possible solution for collecting near real-time information but has many practical challenges including self-noise, energy restrictions, and computing capacity, as well as limited glider-to-shore data transfer bandwidth. This paper describes the development of a near real-time baleen whale acoustic monitoring glider system and its evaluation in the Gulf of St. Lawrence in 2018. Development focused on identifying and prioritizing important acoustic events and on sending contextual information to shore for human validation. The system performance was evaluated post-retrieval, then the trial was simulated using optimized parameters. Trial simulation evaluation revealed that the validated detections of right, fin, and blue whales produced by the system were all correct; the proportion of species occurrence missed varied depending on the timeframe considered. Glider-based near real-time monitoring can be an effective and reliable technique to inform dynamic mitigation strategies for species such as the North Atlantic right whale.
- Subjects :
- Shore
Canada
geography
geography.geographical_feature_category
Acoustics and Ultrasonics
biology
business.industry
Underwater glider
Whale
Environmental resource management
Glider
Endangered species
Acoustics
biology.organism_classification
Baleen whale
Marine mammal
Arts and Humanities (miscellaneous)
biology.animal
Animals
Balaenoptera
Environmental science
Cetacea
Noise
business
Right whale
Subjects
Details
- ISSN :
- 00014966
- Volume :
- 148
- Database :
- OpenAIRE
- Journal :
- The Journal of the Acoustical Society of America
- Accession number :
- edsair.doi.dedup.....fc27c902e881c119a0e1558e46ab0717
- Full Text :
- https://doi.org/10.1121/10.0001811