Assessing population-level effects of anthropogenic disturbance on a marine mammal population

The Population Consequences of Disturbance (PCoD) model is a conceptual framework used to assess the potential for population-level consequences following exposure of animals to a disturbance activity or stressor. This framework is a four-step process, progressing from changes in individual behavior...

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Published in:Frontiers in Marine Science
Main Authors: Dunlop, Rebecca A, Braithwaite, Janelle, Mortensen, Lars O, Harris, Catriona M
Format: Article in Journal/Newspaper
Language:English
Published: 2021
Subjects:
Online Access:https://risweb.st-andrews.ac.uk/portal/en/researchoutput/assessing-populationlevel-effects-of-anthropogenic-disturbance-on-a-marine-mammal-population(bb812ae9-de98-4a35-868a-90eeb76571ad).html
https://doi.org/10.3389/fmars.2021.624981
https://research-repository.st-andrews.ac.uk/bitstream/10023/21645/1/Dunlop_2021_fMS_assessing_population_CC.pdf
id ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/bb812ae9-de98-4a35-868a-90eeb76571ad
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spelling ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/bb812ae9-de98-4a35-868a-90eeb76571ad 2023-05-15T16:36:09+02:00 Assessing population-level effects of anthropogenic disturbance on a marine mammal population Dunlop, Rebecca A Braithwaite, Janelle Mortensen, Lars O Harris, Catriona M 2021-03-15 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/assessing-populationlevel-effects-of-anthropogenic-disturbance-on-a-marine-mammal-population(bb812ae9-de98-4a35-868a-90eeb76571ad).html https://doi.org/10.3389/fmars.2021.624981 https://research-repository.st-andrews.ac.uk/bitstream/10023/21645/1/Dunlop_2021_fMS_assessing_population_CC.pdf eng eng info:eu-repo/semantics/openAccess Dunlop , R A , Braithwaite , J , Mortensen , L O & Harris , C M 2021 , ' Assessing population-level effects of anthropogenic disturbance on a marine mammal population ' , Frontiers in Marine Science , vol. 8 , 624981 . https://doi.org/10.3389/fmars.2021.624981 Agent-based modeling Anthropogenic activity Behavioral response Energetics Humpback whale Ocean noise PCOD Seismic survey article 2021 ftunstandrewcris https://doi.org/10.3389/fmars.2021.624981 2022-06-02T07:52:47Z The Population Consequences of Disturbance (PCoD) model is a conceptual framework used to assess the potential for population-level consequences following exposure of animals to a disturbance activity or stressor. This framework is a four-step process, progressing from changes in individual behavior and/or physiology, to changes in individual health, then vital rates, and finally to population-level effects. Despite its simplicity, there are few complete PCoD models available for any marine mammal species due to a lack of data available to parameterize many of the steps. Here, we present an application of the PCoD framework for migrating humpback whales exposed to a simulated commercial seismic survey scenario. We approached the framework in two ways; first, progressing sequentially forwards through the steps and basing our assessment on lactating females. This cohort was considered to be the most vulnerable in terms of energetic costs of disturbance, and most likely to influence any change in population growth due to future breeding success. Field measurements of behavioral responses of migrating humpback whales to seismic air guns from a previous study were used to parameterize an agent-based model (ABM). This ABM was used to estimate the probability of response, where a response was defined as a change in the migratory movement of female-calf pairs, and the duration of any resulting delay in migration. We then estimated the energetic consequences of any delay in migration for the lactating females and created population growth models with which to assess any population-level effects. The results of the forwards approach suggested a low potential for population consequences of seismic surveys on migrating humpbacks. Working backwards through the framework, we investigated ‘worst case’ scenario(s) that could potentially lead to a population-level effect. Here, we started with increasing calf mortality and assumed that an exposure time greater than 48 hours would increase mortality risk. We determined the most ... Article in Journal/Newspaper Humpback Whale University of St Andrews: Research Portal Frontiers in Marine Science 8
institution Open Polar
collection University of St Andrews: Research Portal
op_collection_id ftunstandrewcris
language English
topic Agent-based modeling
Anthropogenic activity
Behavioral response
Energetics
Humpback whale
Ocean noise
PCOD
Seismic survey
spellingShingle Agent-based modeling
Anthropogenic activity
Behavioral response
Energetics
Humpback whale
Ocean noise
PCOD
Seismic survey
Dunlop, Rebecca A
Braithwaite, Janelle
Mortensen, Lars O
Harris, Catriona M
Assessing population-level effects of anthropogenic disturbance on a marine mammal population
topic_facet Agent-based modeling
Anthropogenic activity
Behavioral response
Energetics
Humpback whale
Ocean noise
PCOD
Seismic survey
description The Population Consequences of Disturbance (PCoD) model is a conceptual framework used to assess the potential for population-level consequences following exposure of animals to a disturbance activity or stressor. This framework is a four-step process, progressing from changes in individual behavior and/or physiology, to changes in individual health, then vital rates, and finally to population-level effects. Despite its simplicity, there are few complete PCoD models available for any marine mammal species due to a lack of data available to parameterize many of the steps. Here, we present an application of the PCoD framework for migrating humpback whales exposed to a simulated commercial seismic survey scenario. We approached the framework in two ways; first, progressing sequentially forwards through the steps and basing our assessment on lactating females. This cohort was considered to be the most vulnerable in terms of energetic costs of disturbance, and most likely to influence any change in population growth due to future breeding success. Field measurements of behavioral responses of migrating humpback whales to seismic air guns from a previous study were used to parameterize an agent-based model (ABM). This ABM was used to estimate the probability of response, where a response was defined as a change in the migratory movement of female-calf pairs, and the duration of any resulting delay in migration. We then estimated the energetic consequences of any delay in migration for the lactating females and created population growth models with which to assess any population-level effects. The results of the forwards approach suggested a low potential for population consequences of seismic surveys on migrating humpbacks. Working backwards through the framework, we investigated ‘worst case’ scenario(s) that could potentially lead to a population-level effect. Here, we started with increasing calf mortality and assumed that an exposure time greater than 48 hours would increase mortality risk. We determined the most ...
format Article in Journal/Newspaper
author Dunlop, Rebecca A
Braithwaite, Janelle
Mortensen, Lars O
Harris, Catriona M
author_facet Dunlop, Rebecca A
Braithwaite, Janelle
Mortensen, Lars O
Harris, Catriona M
author_sort Dunlop, Rebecca A
title Assessing population-level effects of anthropogenic disturbance on a marine mammal population
title_short Assessing population-level effects of anthropogenic disturbance on a marine mammal population
title_full Assessing population-level effects of anthropogenic disturbance on a marine mammal population
title_fullStr Assessing population-level effects of anthropogenic disturbance on a marine mammal population
title_full_unstemmed Assessing population-level effects of anthropogenic disturbance on a marine mammal population
title_sort assessing population-level effects of anthropogenic disturbance on a marine mammal population
publishDate 2021
url https://risweb.st-andrews.ac.uk/portal/en/researchoutput/assessing-populationlevel-effects-of-anthropogenic-disturbance-on-a-marine-mammal-population(bb812ae9-de98-4a35-868a-90eeb76571ad).html
https://doi.org/10.3389/fmars.2021.624981
https://research-repository.st-andrews.ac.uk/bitstream/10023/21645/1/Dunlop_2021_fMS_assessing_population_CC.pdf
genre Humpback Whale
genre_facet Humpback Whale
op_source Dunlop , R A , Braithwaite , J , Mortensen , L O & Harris , C M 2021 , ' Assessing population-level effects of anthropogenic disturbance on a marine mammal population ' , Frontiers in Marine Science , vol. 8 , 624981 . https://doi.org/10.3389/fmars.2021.624981
op_rights info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.3389/fmars.2021.624981
container_title Frontiers in Marine Science
container_volume 8
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