4.7 Article

Integrating remote sensing methods during controlled exposure experiments to quantify group responses of dolphins to navy sonar

Journal

MARINE POLLUTION BULLETIN
Volume 174, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.113194

Keywords

Cetacean; Common dolphin; Noise; Behaviour

Funding

  1. U.S. Navy's Office of Naval Research [N000141713132, N0001418IP-00021, N000141712887, N000141912572]
  2. U.S. Department of Defense (DOD) [N000141712887, N000141713132, N000141912572] Funding Source: U.S. Department of Defense (DOD)

Ask authors/readers for more resources

Research has shown that human noise can be harmful to sound-centric marine mammals, particularly protected cetacean species exposed to navy mid-frequency active sonar. Novel approaches have been proposed to fill key data gaps on group responses of social delphinids exposed to navy sonar in large numbers, involving coordinated collection and integrated analysis of multiple remotely-sensed datasets during controlled exposure experiments. By using quantitative metrics derived from these approaches, behavioral changes and noise exposure-response relationships can be estimated.
Human noise can be harmful to sound-centric marine mammals. Significant research has focused on characterizing behavioral responses of protected cetacean species to navy mid-frequency active sonar (MFAS). Controlled exposure experiments (CEE) using animal-borne tags have proved valuable, but smaller dolphins are not amenable to tagging and groups of interacting individuals are more relevant behavioral units for these social species. To fill key data gaps on group responses of social delphinids that are exposed to navy MFAS in large numbers, we describe novel approaches for the coordinated collection and integrated analysis of multiple remotely-sensed datasets during CEEs. This involves real-time coordination of a sonar source, shore-based group tracking, aerial photogrammetry to measure fine-scale movements and passive acoustics to quantify vocal activity. Using an example CEE involving long-beaked common dolphins (Delphinus delphis bairdii), we demonstrate how resultant quantitative metrics can be used to estimate behavioral changes and noise exposure-response relationships.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available