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Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods

Research output: Contribution to journalArticle

DOI

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Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods. / Pirotta, E.; Thompson, P.M.; Cheney, B.; Donovan, C.R.; Lusseau, D.

In: Animal Conservation, Vol. 18, No. 1, 02.2015, p. 20-31.

Research output: Contribution to journalArticle

Harvard

Pirotta, E, Thompson, PM, Cheney, B, Donovan, CR & Lusseau, D 2015, 'Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods' Animal Conservation, vol. 18, no. 1, pp. 20-31. https://doi.org/10.1111/acv.12132

APA

Pirotta, E., Thompson, P. M., Cheney, B., Donovan, C. R., & Lusseau, D. (2015). Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods. Animal Conservation, 18(1), 20-31. https://doi.org/10.1111/acv.12132

Vancouver

Pirotta E, Thompson PM, Cheney B, Donovan CR, Lusseau D. Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods. Animal Conservation. 2015 Feb;18(1):20-31. https://doi.org/10.1111/acv.12132

Author

Pirotta, E. ; Thompson, P.M. ; Cheney, B. ; Donovan, C.R. ; Lusseau, D. / Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods. In: Animal Conservation. 2015 ; Vol. 18, No. 1. pp. 20-31.

Bibtex - Download

@article{b581313f6c5b41af94ec7a3fbc8ebde7,
title = "Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods",
abstract = "Appropriate management of the effects of human activities on animal populations requires quantification of the rate at which animals encounter stressors. Such activities are heterogeneously distributed in space, as are the individual animals in a population. This will result in a heterogeneous exposure rate, which is also likely to vary over time. A spatially explicit analysis of individual exposure is therefore required. We applied Bayesian spatially explicit capture-recapture models to photo-identification data to estimate the home range of well-marked individuals in a protected coastal population of bottlenose dolphins. Model results were combined with the estimated distribution of boat traffic to quantify how exposure to this disturbance varied in time and space. Variability in exposure between individuals was also investigated using a mixed-effects model. The cumulative individual exposure to boat traffic varied between summers, depending both on the overall area usage and the degree of individual movement around the activity centres. Despite this variability, regions of higher risk could be identified. There were marked inter-individual differences in the predicted amount of time dolphins spent in the presence of boats, and individuals tended to be consistently over- or underexposed across summers. Our study offers a framework to describe the temporal, spatial and individual variation in exposure to anthropogenic stressors when individuals can be repeatedly identified over time. It provides opportunities to map exposure risk and understand how this evolves in time at both individual and population levels. The outcome of such modelling can be used as a robust evidence base to support management decisions.",
keywords = "Bayesian modelling, Capture–recapture, Disturbance, Dolphin, Exposure rate, Home range, Marine traffic, Tursiops truncatus",
author = "E. Pirotta and P.M. Thompson and B. Cheney and C.R. Donovan and D. Lusseau",
note = "This work received funding from the MASTS pooling initiative (the Marine Alliance for Science and Technology for Scotland). MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions.",
year = "2015",
month = "2",
doi = "10.1111/acv.12132",
language = "English",
volume = "18",
pages = "20--31",
journal = "Animal Conservation",
issn = "1367-9430",
publisher = "Wiley-Blackwell",
number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Estimating spatial, temporal and individual variability in dolphin cumulative exposure to boat traffic using spatially explicit capture-recapture methods

AU - Pirotta, E.

AU - Thompson, P.M.

AU - Cheney, B.

AU - Donovan, C.R.

AU - Lusseau, D.

N1 - This work received funding from the MASTS pooling initiative (the Marine Alliance for Science and Technology for Scotland). MASTS is funded by the Scottish Funding Council (grant reference HR09011) and contributing institutions.

PY - 2015/2

Y1 - 2015/2

N2 - Appropriate management of the effects of human activities on animal populations requires quantification of the rate at which animals encounter stressors. Such activities are heterogeneously distributed in space, as are the individual animals in a population. This will result in a heterogeneous exposure rate, which is also likely to vary over time. A spatially explicit analysis of individual exposure is therefore required. We applied Bayesian spatially explicit capture-recapture models to photo-identification data to estimate the home range of well-marked individuals in a protected coastal population of bottlenose dolphins. Model results were combined with the estimated distribution of boat traffic to quantify how exposure to this disturbance varied in time and space. Variability in exposure between individuals was also investigated using a mixed-effects model. The cumulative individual exposure to boat traffic varied between summers, depending both on the overall area usage and the degree of individual movement around the activity centres. Despite this variability, regions of higher risk could be identified. There were marked inter-individual differences in the predicted amount of time dolphins spent in the presence of boats, and individuals tended to be consistently over- or underexposed across summers. Our study offers a framework to describe the temporal, spatial and individual variation in exposure to anthropogenic stressors when individuals can be repeatedly identified over time. It provides opportunities to map exposure risk and understand how this evolves in time at both individual and population levels. The outcome of such modelling can be used as a robust evidence base to support management decisions.

AB - Appropriate management of the effects of human activities on animal populations requires quantification of the rate at which animals encounter stressors. Such activities are heterogeneously distributed in space, as are the individual animals in a population. This will result in a heterogeneous exposure rate, which is also likely to vary over time. A spatially explicit analysis of individual exposure is therefore required. We applied Bayesian spatially explicit capture-recapture models to photo-identification data to estimate the home range of well-marked individuals in a protected coastal population of bottlenose dolphins. Model results were combined with the estimated distribution of boat traffic to quantify how exposure to this disturbance varied in time and space. Variability in exposure between individuals was also investigated using a mixed-effects model. The cumulative individual exposure to boat traffic varied between summers, depending both on the overall area usage and the degree of individual movement around the activity centres. Despite this variability, regions of higher risk could be identified. There were marked inter-individual differences in the predicted amount of time dolphins spent in the presence of boats, and individuals tended to be consistently over- or underexposed across summers. Our study offers a framework to describe the temporal, spatial and individual variation in exposure to anthropogenic stressors when individuals can be repeatedly identified over time. It provides opportunities to map exposure risk and understand how this evolves in time at both individual and population levels. The outcome of such modelling can be used as a robust evidence base to support management decisions.

KW - Bayesian modelling

KW - Capture–recapture

KW - Disturbance

KW - Dolphin

KW - Exposure rate

KW - Home range

KW - Marine traffic

KW - Tursiops truncatus

U2 - 10.1111/acv.12132

DO - 10.1111/acv.12132

M3 - Article

VL - 18

SP - 20

EP - 31

JO - Animal Conservation

T2 - Animal Conservation

JF - Animal Conservation

SN - 1367-9430

IS - 1

ER -

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ID: 167653346