Best available science? Are NOAA Fisheries marine mammal noise exposure guidelines up to date?

Conference Paper

Title: Best available science? Are NOAA Fisheries marine mammal noise exposure guidelines up to date?
Authors: Stocker, M.
Publication Date:
May 22, 2019
Conference Name: 177th Meeting of the Acoustical Society of America
Conference Location: Louisville, Kentucky
Volume: 36
Pages: 6
Publisher: Acoustical Society of America
Stressor:

Document Access

Website: External Link
Attachment: Access File
(2 MB)

Citation

Stocker, M. (2019). Best available science? Are NOAA Fisheries marine mammal noise exposure guidelines up to date?. Paper Presented at the 177th Meeting of the Acoustical Society of America, Louisville, Kentucky.
Abstract: 

NOAA Fisheries employs a set of in-water noise exposure guidelines that establish regulatory thresholds for ocean actions that impact marine mammals. These are established based on two impact criteria: Level A – a physiological impact including “Permanent Threshold Shift” (PTS), and/or tissue damage, and/or mortality, and Level B – a behavioral impact or disruption. Recently the Level A exposure thresholds were reconciled to the frequency-dependent hearing sensitivities of five classes of marine mammals based on work done more than a decade ago (Southall et al. 2007). Since that time much more work has been published on behavioral impacts of various noise exposures, and consideration of more variables such as frequency-dependent noise propagation characteristics, cumulative, concurrent, and continuous exposures, and noise impacts on marine soundscapes have entered into the discussion – but have not been incorporated into the NOAA Fisheries guidelines.

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