Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic
<jats:sec> <jats:title>Background</jats:title> <jats:p>Citizen science is increasingly popular and has the potential to collect extensive datasets at lower costs than traditional surveys conducted by professional scientists. Ferries have been used to collect data on cetacean...
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Online Access: | http://hdl.handle.net/10026.1/16782 https://doi.org/10.7717/peerj.8335 |
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ftunivplympearl:oai:pearl.plymouth.ac.uk:10026.1/16782 2024-06-09T07:48:24+00:00 Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic Robbins, JR Babey, L Embling, CB 2020-02-28 e8335-e8335 Electronic-eCollection application/pdf http://hdl.handle.net/10026.1/16782 https://doi.org/10.7717/peerj.8335 en eng PeerJ United States ISSN:2167-8359 E-ISSN:2167-8359 2167-8359 e8335 http://hdl.handle.net/10026.1/16782 doi:10.7717/peerj.8335 2021-1-7 Not known Citizen science Cetacean Platforms of opportunity Common dolphin Bycatch Distance sampling Density surface model journal-article Article 2020 ftunivplympearl https://doi.org/10.7717/peerj.8335 2024-05-14T23:46:24Z <jats:sec> <jats:title>Background</jats:title> <jats:p>Citizen science is increasingly popular and has the potential to collect extensive datasets at lower costs than traditional surveys conducted by professional scientists. Ferries have been used to collect data on cetacean populations for decades, providing long-term time series for monitoring of cetacean populations. One cetacean species of concern is the common dolphin, which has been found stranded around the north-east Atlantic in recent years, with high numbers on French coasts being attributed to fisheries bycatch. We estimate common dolphin densities in the north-east Atlantic and investigate the ability of citizen science data to identify changes in marine mammal densities and areas of importance.</jats:p> </jats:sec> <jats:sec> <jats:title>Materials and Methods</jats:title> <jats:p>Data were collected by citizen scientists on ferries between April and October in 2006–2017. Common dolphin sightings data from two ferry routes across three regions, Bay of Biscay (<jats:italic>n</jats:italic> = 569); south-west United Kingdom to the Isles of Scilly in the Celtic Sea (<jats:italic>n</jats:italic> = 260); and English Channel (<jats:italic>n</jats:italic> = 75), were used to estimate density across ferry routes. Two-stage Density Surface Models accounted for imperfect detection, and tested the influence of environmental (chlorophyll <jats:italic>a</jats:italic>, sea surface temperature, depth, and slope), spatial (latitude and longitude) and temporal terms (year and Julian day) on occurrence.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Overall detection probability was highest in the areas sampled within the English Channel (0.384) and Bay of Biscay (0.348), and lowest on the Scilly’s route (0.158). Common dolphins were estimated to occur in higher densities on the Scilly’s route (0.400 ... Article in Journal/Newspaper North East Atlantic PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) PeerJ 8 e8335 |
institution |
Open Polar |
collection |
PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) |
op_collection_id |
ftunivplympearl |
language |
English |
topic |
Citizen science Cetacean Platforms of opportunity Common dolphin Bycatch Distance sampling Density surface model |
spellingShingle |
Citizen science Cetacean Platforms of opportunity Common dolphin Bycatch Distance sampling Density surface model Robbins, JR Babey, L Embling, CB Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic |
topic_facet |
Citizen science Cetacean Platforms of opportunity Common dolphin Bycatch Distance sampling Density surface model |
description |
<jats:sec> <jats:title>Background</jats:title> <jats:p>Citizen science is increasingly popular and has the potential to collect extensive datasets at lower costs than traditional surveys conducted by professional scientists. Ferries have been used to collect data on cetacean populations for decades, providing long-term time series for monitoring of cetacean populations. One cetacean species of concern is the common dolphin, which has been found stranded around the north-east Atlantic in recent years, with high numbers on French coasts being attributed to fisheries bycatch. We estimate common dolphin densities in the north-east Atlantic and investigate the ability of citizen science data to identify changes in marine mammal densities and areas of importance.</jats:p> </jats:sec> <jats:sec> <jats:title>Materials and Methods</jats:title> <jats:p>Data were collected by citizen scientists on ferries between April and October in 2006–2017. Common dolphin sightings data from two ferry routes across three regions, Bay of Biscay (<jats:italic>n</jats:italic> = 569); south-west United Kingdom to the Isles of Scilly in the Celtic Sea (<jats:italic>n</jats:italic> = 260); and English Channel (<jats:italic>n</jats:italic> = 75), were used to estimate density across ferry routes. Two-stage Density Surface Models accounted for imperfect detection, and tested the influence of environmental (chlorophyll <jats:italic>a</jats:italic>, sea surface temperature, depth, and slope), spatial (latitude and longitude) and temporal terms (year and Julian day) on occurrence.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Overall detection probability was highest in the areas sampled within the English Channel (0.384) and Bay of Biscay (0.348), and lowest on the Scilly’s route (0.158). Common dolphins were estimated to occur in higher densities on the Scilly’s route (0.400 ... |
format |
Article in Journal/Newspaper |
author |
Robbins, JR Babey, L Embling, CB |
author_facet |
Robbins, JR Babey, L Embling, CB |
author_sort |
Robbins, JR |
title |
Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic |
title_short |
Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic |
title_full |
Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic |
title_fullStr |
Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic |
title_full_unstemmed |
Citizen science in the marine environment: estimating common dolphin densities in the north-east Atlantic |
title_sort |
citizen science in the marine environment: estimating common dolphin densities in the north-east atlantic |
publisher |
PeerJ |
publishDate |
2020 |
url |
http://hdl.handle.net/10026.1/16782 https://doi.org/10.7717/peerj.8335 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
ISSN:2167-8359 E-ISSN:2167-8359 2167-8359 e8335 http://hdl.handle.net/10026.1/16782 doi:10.7717/peerj.8335 |
op_rights |
2021-1-7 Not known |
op_doi |
https://doi.org/10.7717/peerj.8335 |
container_title |
PeerJ |
container_volume |
8 |
container_start_page |
e8335 |
_version_ |
1801380116143538176 |