DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf
With increasing numbers of offshore structures being installed and decommissioned, a better understanding of their effect on marine predators is timely. There is some evidence that oil and gas platforms may attract marine mammals, acting as artificial reefs. However, it is unclear whether different...
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ftfrontimediafig:oai:figshare.com:article/21129745 2024-09-15T18:30:27+00:00 DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf Oihane Fernandez-Betelu Isla M. Graham Paul M. Thompson 2022-09-16T05:45:55Z https://doi.org/10.3389/fmars.2022.980388.s001 https://figshare.com/articles/dataset/DataSheet_1_Reef_effect_of_offshore_structures_on_the_occurrence_and_foraging_activity_of_harbour_porpoises_pdf/21129745 unknown doi:10.3389/fmars.2022.980388.s001 https://figshare.com/articles/dataset/DataSheet_1_Reef_effect_of_offshore_structures_on_the_occurrence_and_foraging_activity_of_harbour_porpoises_pdf/21129745 CC BY 4.0 Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering artificial reefs oil and gas industry (O&G) offshore renewable energy installations marine mammal passive acoustic monitoring (PAM) diel patterns foraging behaviour Dataset 2022 ftfrontimediafig https://doi.org/10.3389/fmars.2022.980388.s001 2024-08-19T06:20:01Z With increasing numbers of offshore structures being installed and decommissioned, a better understanding of their effect on marine predators is timely. There is some evidence that oil and gas platforms may attract marine mammals, acting as artificial reefs. However, it is unclear whether different man-made structure designs have similar effects or whether artificial structures modify the diel patterns of occurrence and foraging of marine mammals. Here, we used passive acoustics to investigate the occurrence and foraging activity of harbour porpoises (Phocoena phocoena) around four artificial structures of different age and complexity. We deployed an array of echolocation click detectors (CPODs) in 2021, along a gradient of distances to these structures and assessed the extent to which porpoises were attracted to them and their effect on porpoises’ diel patterns of occurrence and foraging activity. The probability of porpoise occurrence and foraging activity decreased with distance from offshore structures. A significant increase in porpoise occurrence and foraging was detected during night-time compared to daytime around all four offshore structures (< 200 m). Comparing pre- and post-installation porpoise detections, the daily patterns of occurrence and foraging activity shifted from a weak diel pattern before the structure was installed, to a strong nocturnal pattern when the structure was present. These findings provide evidence that marine mammals are attracted to man-made structures and that porpoises modify their diel patterns of occurrence and foraging activity around them. This research suggests that offshore structures play an important role as foraging areas for some marine mammals and provides key information for decommissioning considerations and the planning of decommissioning activities. Dataset Phocoena phocoena Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering artificial reefs oil and gas industry (O&G) offshore renewable energy installations marine mammal passive acoustic monitoring (PAM) diel patterns foraging behaviour |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering artificial reefs oil and gas industry (O&G) offshore renewable energy installations marine mammal passive acoustic monitoring (PAM) diel patterns foraging behaviour Oihane Fernandez-Betelu Isla M. Graham Paul M. Thompson DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering artificial reefs oil and gas industry (O&G) offshore renewable energy installations marine mammal passive acoustic monitoring (PAM) diel patterns foraging behaviour |
description |
With increasing numbers of offshore structures being installed and decommissioned, a better understanding of their effect on marine predators is timely. There is some evidence that oil and gas platforms may attract marine mammals, acting as artificial reefs. However, it is unclear whether different man-made structure designs have similar effects or whether artificial structures modify the diel patterns of occurrence and foraging of marine mammals. Here, we used passive acoustics to investigate the occurrence and foraging activity of harbour porpoises (Phocoena phocoena) around four artificial structures of different age and complexity. We deployed an array of echolocation click detectors (CPODs) in 2021, along a gradient of distances to these structures and assessed the extent to which porpoises were attracted to them and their effect on porpoises’ diel patterns of occurrence and foraging activity. The probability of porpoise occurrence and foraging activity decreased with distance from offshore structures. A significant increase in porpoise occurrence and foraging was detected during night-time compared to daytime around all four offshore structures (< 200 m). Comparing pre- and post-installation porpoise detections, the daily patterns of occurrence and foraging activity shifted from a weak diel pattern before the structure was installed, to a strong nocturnal pattern when the structure was present. These findings provide evidence that marine mammals are attracted to man-made structures and that porpoises modify their diel patterns of occurrence and foraging activity around them. This research suggests that offshore structures play an important role as foraging areas for some marine mammals and provides key information for decommissioning considerations and the planning of decommissioning activities. |
format |
Dataset |
author |
Oihane Fernandez-Betelu Isla M. Graham Paul M. Thompson |
author_facet |
Oihane Fernandez-Betelu Isla M. Graham Paul M. Thompson |
author_sort |
Oihane Fernandez-Betelu |
title |
DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
title_short |
DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
title_full |
DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
title_fullStr |
DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
title_full_unstemmed |
DataSheet_1_Reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
title_sort |
datasheet_1_reef effect of offshore structures on the occurrence and foraging activity of harbour porpoises.pdf |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.980388.s001 https://figshare.com/articles/dataset/DataSheet_1_Reef_effect_of_offshore_structures_on_the_occurrence_and_foraging_activity_of_harbour_porpoises_pdf/21129745 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
doi:10.3389/fmars.2022.980388.s001 https://figshare.com/articles/dataset/DataSheet_1_Reef_effect_of_offshore_structures_on_the_occurrence_and_foraging_activity_of_harbour_porpoises_pdf/21129745 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.3389/fmars.2022.980388.s001 |
_version_ |
1810471916878692352 |