Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals

Establishing noise exposure criteria for marine mammals has proven to be a difficult and contentious issue. Over the last decade, several attempts have been made to provide scientifically-based exposure criteria. While representing the best available science on the issue, these criteria, and the ass...

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Main Author: Andrew John Wright
Format: Article
Language:English
Published: Frontiers Media S.A. 2015-11-01
Series:Frontiers in Marine Science
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fmars.2015.00099/full
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author Andrew John Wright
author_facet Andrew John Wright
author_sort Andrew John Wright
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description Establishing noise exposure criteria for marine mammals has proven to be a difficult and contentious issue. Over the last decade, several attempts have been made to provide scientifically-based exposure criteria. While representing the best available science on the issue, these criteria, and the assumptions underpinning them, have led to considerable discussion among both scientists and policy-makers. However, one area where there has been little or no debate is that of appropriate statistical and other numerical procedures used in the various criteria-establishing methodologies. A common issue, arising from a desire to include as much data as possible, is pseudoreplication. Examples from acoustic criteria are the use of many data points from a single animal to establish a value for one species and the use of several points from one species to set values for a functional hearing group. Less fundamental, but equally problematic for the application of the criteria to policy, is the failure to adequately represent uncertainty around proposed criteria through the use of confidence intervals. Other issues are also present in the uneven treatment of different data in terms of transformation protocols and extrapolation, but also in the determination of which outliers to discard. Each of these errors introduces bias into the resulting criteria. Thus, despite the paucity of relevant data, we need to meet such statistical standards to truly provide objective advice that rises to the level of the best available science.
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spelling doaj.art-8a7aa699339c4794a3a096f88d2c8c812022-12-21T22:48:56ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452015-11-01210.3389/fmars.2015.00099166636Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine MammalsAndrew John Wright0George Mason UniversityEstablishing noise exposure criteria for marine mammals has proven to be a difficult and contentious issue. Over the last decade, several attempts have been made to provide scientifically-based exposure criteria. While representing the best available science on the issue, these criteria, and the assumptions underpinning them, have led to considerable discussion among both scientists and policy-makers. However, one area where there has been little or no debate is that of appropriate statistical and other numerical procedures used in the various criteria-establishing methodologies. A common issue, arising from a desire to include as much data as possible, is pseudoreplication. Examples from acoustic criteria are the use of many data points from a single animal to establish a value for one species and the use of several points from one species to set values for a functional hearing group. Less fundamental, but equally problematic for the application of the criteria to policy, is the failure to adequately represent uncertainty around proposed criteria through the use of confidence intervals. Other issues are also present in the uneven treatment of different data in terms of transformation protocols and extrapolation, but also in the determination of which outliers to discard. Each of these errors introduces bias into the resulting criteria. Thus, despite the paucity of relevant data, we need to meet such statistical standards to truly provide objective advice that rises to the level of the best available science.http://journal.frontiersin.org/Journal/10.3389/fmars.2015.00099/fullHearingManagementstatisticsMarine mammalacoustic exposure
spellingShingle Andrew John Wright
Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals
Frontiers in Marine Science
Hearing
Management
statistics
Marine mammal
acoustic exposure
title Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals
title_full Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals
title_fullStr Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals
title_full_unstemmed Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals
title_short Sound Science: Maintaining Numerical and Statistical Standards in the Pursuit of Noise Exposure Criteria for Marine Mammals
title_sort sound science maintaining numerical and statistical standards in the pursuit of noise exposure criteria for marine mammals
topic Hearing
Management
statistics
Marine mammal
acoustic exposure
url http://journal.frontiersin.org/Journal/10.3389/fmars.2015.00099/full
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