Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth
This report presents an estimate of the risk of collision between harbour seals (Phoca vitulina) and tidal turbines on the basis of observed behaviour patterns derived from targeted telemetry tracking studies and recent population survey data. The collision risk associated with a proposed turbine ar...
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Scottish Natural Heritage
2016
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/data-based-estimates-of-collision-risk-an-example-based-on-harbour-seal-tracking-data-around-a-proposed-tidal-turbine-array-in-the-pentland-firth(f972efcc-26b9-4d67-8aa4-65a81ed39712).html |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/f972efcc-26b9-4d67-8aa4-65a81ed39712 2024-04-28T08:23:03+00:00 Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth Thompson, David Onoufriou, Joseph Brownlow, Andrew Morris, Christopher 2016 https://research-portal.st-andrews.ac.uk/en/researchoutput/data-based-estimates-of-collision-risk-an-example-based-on-harbour-seal-tracking-data-around-a-proposed-tidal-turbine-array-in-the-pentland-firth(f972efcc-26b9-4d67-8aa4-65a81ed39712).html eng eng Scottish Natural Heritage https://research-portal.st-andrews.ac.uk/en/researchoutput/data-based-estimates-of-collision-risk-an-example-based-on-harbour-seal-tracking-data-around-a-proposed-tidal-turbine-array-in-the-pentland-firth(f972efcc-26b9-4d67-8aa4-65a81ed39712).html urn:ISBN:ISBN: 978-1-78391-360-2 info:eu-repo/semantics/restrictedAccess Thompson , D , Onoufriou , J , Brownlow , A & Morris , C 2016 , Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth . 900 edn , Scottish Natural Heritage . Harbour seal collision risk marine renewables tidal energy Pentland Firth Inner Sound book 2016 ftunstandrewcris 2024-04-09T14:43:22Z This report presents an estimate of the risk of collision between harbour seals (Phoca vitulina) and tidal turbines on the basis of observed behaviour patterns derived from targeted telemetry tracking studies and recent population survey data. The collision risk associated with a proposed turbine array development in the Pentland Firth was used as a worked example of the method. A brief summary of the movement data collected during transmitter deployments on harbour seals in the Pentland Firth study area in 2011 is presented, with an emphasis on information that is most likely to be of use in assessing the potential impacts of tidal turbine deployments. Main findings A process to estimate the number of times that telemetry tagged seals could pass through the area of a proposed turbine array is described. The method incorporates dive depth data to estimate the number of times tagged seals would have passed through the swept area of individual turbines in a hypothetical turbine array within the site. Telemetry data from seals tagged at various sites in the Pentland Firth and Orkney were used to support an estimate of the number of seals likely to be at risk of interacting with such an array. The expected number of collisions between harbour seals and turbines in the array was based on details of their movements relative to the locations and movements of hypothetical tidal turbine blades, assuming that seals are oblivious to the presence of devices, i.e. show no avoidance and take no evasive action. It was estimated that 1.2 seals per year (approx. 95% confidence interval (C.I.) 0.8- 2.0) would collide with individual turbines. Scaling that estimate up to the full 86 turbine array suggested that 103 (approx. 95% C.I. 73 – 152) collisions would occur per year. This estimate was approximately 15% of the rate derived, previously, from collision risk models for the same site. The preliminary information from collision experiments was then used to give estimated mortality rates from such collisions. The effects of ... Book harbour seal Phoca vitulina University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Harbour seal collision risk marine renewables tidal energy Pentland Firth Inner Sound |
spellingShingle |
Harbour seal collision risk marine renewables tidal energy Pentland Firth Inner Sound Thompson, David Onoufriou, Joseph Brownlow, Andrew Morris, Christopher Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth |
topic_facet |
Harbour seal collision risk marine renewables tidal energy Pentland Firth Inner Sound |
description |
This report presents an estimate of the risk of collision between harbour seals (Phoca vitulina) and tidal turbines on the basis of observed behaviour patterns derived from targeted telemetry tracking studies and recent population survey data. The collision risk associated with a proposed turbine array development in the Pentland Firth was used as a worked example of the method. A brief summary of the movement data collected during transmitter deployments on harbour seals in the Pentland Firth study area in 2011 is presented, with an emphasis on information that is most likely to be of use in assessing the potential impacts of tidal turbine deployments. Main findings A process to estimate the number of times that telemetry tagged seals could pass through the area of a proposed turbine array is described. The method incorporates dive depth data to estimate the number of times tagged seals would have passed through the swept area of individual turbines in a hypothetical turbine array within the site. Telemetry data from seals tagged at various sites in the Pentland Firth and Orkney were used to support an estimate of the number of seals likely to be at risk of interacting with such an array. The expected number of collisions between harbour seals and turbines in the array was based on details of their movements relative to the locations and movements of hypothetical tidal turbine blades, assuming that seals are oblivious to the presence of devices, i.e. show no avoidance and take no evasive action. It was estimated that 1.2 seals per year (approx. 95% confidence interval (C.I.) 0.8- 2.0) would collide with individual turbines. Scaling that estimate up to the full 86 turbine array suggested that 103 (approx. 95% C.I. 73 – 152) collisions would occur per year. This estimate was approximately 15% of the rate derived, previously, from collision risk models for the same site. The preliminary information from collision experiments was then used to give estimated mortality rates from such collisions. The effects of ... |
format |
Book |
author |
Thompson, David Onoufriou, Joseph Brownlow, Andrew Morris, Christopher |
author_facet |
Thompson, David Onoufriou, Joseph Brownlow, Andrew Morris, Christopher |
author_sort |
Thompson, David |
title |
Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth |
title_short |
Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth |
title_full |
Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth |
title_fullStr |
Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth |
title_full_unstemmed |
Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth |
title_sort |
data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the pentland firth |
publisher |
Scottish Natural Heritage |
publishDate |
2016 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/data-based-estimates-of-collision-risk-an-example-based-on-harbour-seal-tracking-data-around-a-proposed-tidal-turbine-array-in-the-pentland-firth(f972efcc-26b9-4d67-8aa4-65a81ed39712).html |
genre |
harbour seal Phoca vitulina |
genre_facet |
harbour seal Phoca vitulina |
op_source |
Thompson , D , Onoufriou , J , Brownlow , A & Morris , C 2016 , Data based estimates of collision risk: an example based on harbour seal tracking data around a proposed tidal turbine array in the Pentland Firth . 900 edn , Scottish Natural Heritage . |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/data-based-estimates-of-collision-risk-an-example-based-on-harbour-seal-tracking-data-around-a-proposed-tidal-turbine-array-in-the-pentland-firth(f972efcc-26b9-4d67-8aa4-65a81ed39712).html urn:ISBN:ISBN: 978-1-78391-360-2 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1797584267448942592 |