[MARMAM] New publication: Acoustic tracking of fin whales within a Canadian Pacific fjord system

Benjamin Hendricks benhendricks at soundspace-analytics.ca
Tue Jun 15 17:47:13 PDT 2021

Dear MARMAM community,

On behalf of my-co-authors, I am happy to share our most recent work and publication:

"Acoustic tracking of fin whales: Habitat use and movement patterns within a Canadian Pacific fjord system"

Benjamin Hendricks, Eric M. Keen, Chenoah Shine, Janie L. Wray, Hussein M. Alidina, and Chris R. Picard , "Acoustic tracking of fin whales: Habitat use and movement patterns within a Canadian Pacific fjord system", The Journal of the Acoustical Society of America 149, 4264-4280 (2021) https://doi.org/10.1121/10.0005044


Fin whale 20 Hz calls were detected, localized, and tracked using a 10 km aperture network of three acoustic receivers deployed for 11 months in a Pacific Canadian fjord system. The area has been historically important for fin whales and is located along a route that tankers will begin using in 2024. A total of 6712 calls were localized, and trajectories were fitted for 55 acoustic tracks. Fin whale tracks occurred throughout the monitoring site. Call activity peaked in September and was low during winter months. Swimming characteristics varied significantly between day- and nighttime: at night, whales swam faster (7.1 vs 4.0 km/h median, +75.2%), which resulted in longer (+34.7%), less predictable (–70.6%) tracks as compared to daylight hours. Call frequencies varied between 16 and 32 Hz. Beside stereotypical song frequencies fin whales also used irregular frequency components, which contributed the majority of calls in the summer but did not occur in the winter. The results suggest that the area is primarily used as a summer feeding ground, where fin whales follow a diel behavioral cycle. The observed activity patterns will aid in the assessment of strike risk and harassment mitigation and provide a baseline to document behavioral change.

The full paper is available here:

https://asa.scitation.org/doi/10.1121/10.0005044 <https://asa.scitation.org/doi/10.1121/10.0005044>

If you like to reveice a copy directly from us, you can also email me (benhendricks at soundspace-analytics.ca) or Eric Keen (ericmkeen at gmail.com).

Benjamin Hendricks, PhD__________________________
*SoundSpace Analytics*
benhendricks at soundspace-analytics.ca 
<mailto:benhendricks at soundspace-analytics.ca>
(+1) 250 532 3179

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