Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment
Tidal stream turbines could have several direct impacts upon pursuit-diving seabirds foraging within tidal stream environments (mean horizontal current speeds > 2 ms−1), including collisions and displacement. Understanding how foraging seabirds respond to temporally variable but predictable hydro...
Published in: | ICES Journal of Marine Science: Journal du Conseil |
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2016
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Online Access: | https://pure.uhi.ac.uk/en/publications/e01fc66b-b960-49bb-a03d-6bdca0bc7893 https://doi.org/10.1093/icesjms/fsw100 https://pureadmin.uhi.ac.uk/ws/files/2511545/fsw100.pdf |
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ftuhipublicatio:oai:pure.atira.dk:publications/e01fc66b-b960-49bb-a03d-6bdca0bc7893 2024-02-11T10:02:54+01:00 Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment Waggitt, James Cazenave, Pierre W. Torres, Ricardo Williamson, Benjamin J. Scott, Beth E. 2016-11 application/pdf https://pure.uhi.ac.uk/en/publications/e01fc66b-b960-49bb-a03d-6bdca0bc7893 https://doi.org/10.1093/icesjms/fsw100 https://pureadmin.uhi.ac.uk/ws/files/2511545/fsw100.pdf eng eng info:eu-repo/semantics/openAccess Waggitt , J , Cazenave , P W , Torres , R , Williamson , B J & Scott , B E 2016 , ' Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment ' , ICES Journal of Marine Science , vol. 73 , no. 10 , pp. 2677-2686 . https://doi.org/10.1093/icesjms/fsw100 Cepphus grille environmental impacts foraging ecology FVCOM Phalacrocorax aristotelis shore-based surveys tidal stream turbines article 2016 ftuhipublicatio https://doi.org/10.1093/icesjms/fsw100 2024-01-18T23:20:43Z Tidal stream turbines could have several direct impacts upon pursuit-diving seabirds foraging within tidal stream environments (mean horizontal current speeds > 2 ms−1), including collisions and displacement. Understanding how foraging seabirds respond to temporally variable but predictable hydrodynamic conditions immediately around devices could identify when interactions between seabirds and devices are most likely to occur; information which would quantify the magnitude of potential impacts, and also facilitate the development of suitable mitigation measures. This study uses shore-based observational surveys and Finite Volume Community Ocean Model outputs to test whether temporally predictable hydrodynamic conditions (horizontal current speeds, water elevation, turbulence) influenced the density of foraging black guillemots Cepphus grylle and European shags Phalacrocorax aristotelis in a tidal stream environment in Orkney, United Kingdom, during the breeding season. These species are particularly vulnerable to interactions with devices due to their tendency to exploit benthic and epi-benthic prey on or near the seabed. The density of both species decreased as a function of horizontal current speeds, whereas the density of black guillemots also decreased as a function of water elevation. These relationships could be linked to higher energetic costs of dives in particularly fast horizontal current speeds (>3 ms−1) and deeper water. Therefore, interactions between these species and moving components seem unlikely at particularly high horizontal current speeds. Combining this information, with that on the rotation rates of moving components at lower horizontal current speeds, could be used to assess collision risk in this site during breeding seasons. It is also likely that moderating any device operation during both lowest water elevation and lowest horizontal current speeds could reduce the risk of collisions for these species in this site during this season. The approaches used in this study could have ... Article in Journal/Newspaper Cepphus grylle University of the Highlands and Islands: Research Database of UHI ICES Journal of Marine Science: Journal du Conseil 73 10 2677 2686 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Cepphus grille environmental impacts foraging ecology FVCOM Phalacrocorax aristotelis shore-based surveys tidal stream turbines |
spellingShingle |
Cepphus grille environmental impacts foraging ecology FVCOM Phalacrocorax aristotelis shore-based surveys tidal stream turbines Waggitt, James Cazenave, Pierre W. Torres, Ricardo Williamson, Benjamin J. Scott, Beth E. Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
topic_facet |
Cepphus grille environmental impacts foraging ecology FVCOM Phalacrocorax aristotelis shore-based surveys tidal stream turbines |
description |
Tidal stream turbines could have several direct impacts upon pursuit-diving seabirds foraging within tidal stream environments (mean horizontal current speeds > 2 ms−1), including collisions and displacement. Understanding how foraging seabirds respond to temporally variable but predictable hydrodynamic conditions immediately around devices could identify when interactions between seabirds and devices are most likely to occur; information which would quantify the magnitude of potential impacts, and also facilitate the development of suitable mitigation measures. This study uses shore-based observational surveys and Finite Volume Community Ocean Model outputs to test whether temporally predictable hydrodynamic conditions (horizontal current speeds, water elevation, turbulence) influenced the density of foraging black guillemots Cepphus grylle and European shags Phalacrocorax aristotelis in a tidal stream environment in Orkney, United Kingdom, during the breeding season. These species are particularly vulnerable to interactions with devices due to their tendency to exploit benthic and epi-benthic prey on or near the seabed. The density of both species decreased as a function of horizontal current speeds, whereas the density of black guillemots also decreased as a function of water elevation. These relationships could be linked to higher energetic costs of dives in particularly fast horizontal current speeds (>3 ms−1) and deeper water. Therefore, interactions between these species and moving components seem unlikely at particularly high horizontal current speeds. Combining this information, with that on the rotation rates of moving components at lower horizontal current speeds, could be used to assess collision risk in this site during breeding seasons. It is also likely that moderating any device operation during both lowest water elevation and lowest horizontal current speeds could reduce the risk of collisions for these species in this site during this season. The approaches used in this study could have ... |
format |
Article in Journal/Newspaper |
author |
Waggitt, James Cazenave, Pierre W. Torres, Ricardo Williamson, Benjamin J. Scott, Beth E. |
author_facet |
Waggitt, James Cazenave, Pierre W. Torres, Ricardo Williamson, Benjamin J. Scott, Beth E. |
author_sort |
Waggitt, James |
title |
Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
title_short |
Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
title_full |
Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
title_fullStr |
Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
title_full_unstemmed |
Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
title_sort |
predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment |
publishDate |
2016 |
url |
https://pure.uhi.ac.uk/en/publications/e01fc66b-b960-49bb-a03d-6bdca0bc7893 https://doi.org/10.1093/icesjms/fsw100 https://pureadmin.uhi.ac.uk/ws/files/2511545/fsw100.pdf |
genre |
Cepphus grylle |
genre_facet |
Cepphus grylle |
op_source |
Waggitt , J , Cazenave , P W , Torres , R , Williamson , B J & Scott , B E 2016 , ' Predictable hydrodynamic conditions explain temporal variations in the density of benthic foraging seabirds in a tidal stream environment ' , ICES Journal of Marine Science , vol. 73 , no. 10 , pp. 2677-2686 . https://doi.org/10.1093/icesjms/fsw100 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1093/icesjms/fsw100 |
container_title |
ICES Journal of Marine Science: Journal du Conseil |
container_volume |
73 |
container_issue |
10 |
container_start_page |
2677 |
op_container_end_page |
2686 |
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1790598987658559488 |