Drifting Acoustic Spar Buoy Recorder (DASBR) deployments in the San Nicolas Basin in January 2018

Barlow, Jay; Schorr, Gregory

doi:10.7289/v5/tm-swfsc-598

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Drifting Acoustic Spar Buoy Recorder (DASBR) deployments in the San Nicolas Basin in January 2018

Published Date:

2018

Series:

NOAA technical memorandum NMFS ; NOAA-TM-NMFS-SWFSC ; 598 ;

Language:

English

[PDF-320.26 KB]

Details:

DOI:

https://doi.org/10.7289/v5/tm-swfsc-598

Personal Authors:

Barlow, Jay ; Schorr, Gregory ;

Corporate Authors:

Southwest Fisheries Science Center (U.S.)

Keywords:

[+]

Description:

Drifting Acoustic Spar Buoy Recorders (DASBRs) were deployed six times in the San Nicolas Basin from 4 to 15 January 2018 for a total of 120 hours of recordings. Echolocation clicks of Cuvier's beaked whales were detected on 47 discrete occasions. Based on the diving behavior of this species, each occasion probably represents a deep-foraging dive. The average number of new deep-foraging dives per hour was 0.38. Cuvier's beaked whale echolocation clicks were detected in 12.4% of all recording minutes. Data from this study will be used as a measure of relative abundance of beaked whales to compare with other areas where DASBRs have been deployed.

Document Type:

Technical Memorandum

Collection(s):

National Marine Fisheries Service (NMFS)

Main Document Checksum:

[+]

Supporting Files:

No Additional Files

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