Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring
Abstract Knowing the abundance of a population is a crucial component to assess its conservation status and develop effective conservation plans. For most cetaceans, abundance estimation is difficult given their cryptic and mobile nature, especially when the population is small and has a transnation...
Published in: | Ecology and Evolution |
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Online Access: | https://doi.org/10.1002/ece3.8554 https://doaj.org/article/ebd2bbe6847e4023911435a89a5659cf |
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ftdoajarticles:oai:doaj.org/article:ebd2bbe6847e4023911435a89a5659cf 2023-05-15T16:33:18+02:00 Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring Mats Amundin Julia Carlström Len Thomas Ida Carlén Jens Koblitz Jonas Teilmann Jakob Tougaard Nick Tregenza Daniel Wennerberg Olli Loisa Katharina Brundiers Monika Kosecka Line A. Kyhn Cinthia Tiberi Ljungqvist Signe Sveegaard M. Louise Burt Iwona Pawliczka Ivar Jussi Radomil Koza Bartlomiej Arciszewski Anders Galatius Martin Jabbusch Jussi Laaksonlaita Sami Lyytinen Jussi Niemi Aleksej Šaškov Jamie MacAuley Andrew J. Wright Anja Gallus Penina Blankett Michael Dähne Alejandro Acevedo‐Gutiérrez Harald Benke 2022-02-01T00:00:00Z https://doi.org/10.1002/ece3.8554 https://doaj.org/article/ebd2bbe6847e4023911435a89a5659cf EN eng Wiley https://doi.org/10.1002/ece3.8554 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8554 https://doaj.org/article/ebd2bbe6847e4023911435a89a5659cf Ecology and Evolution, Vol 12, Iss 2, Pp n/a-n/a (2022) abundance estimation C‐POD detection function passive acoustic monitoring Phocoena phocoena Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.1002/ece3.8554 2022-12-30T23:24:47Z Abstract Knowing the abundance of a population is a crucial component to assess its conservation status and develop effective conservation plans. For most cetaceans, abundance estimation is difficult given their cryptic and mobile nature, especially when the population is small and has a transnational distribution. In the Baltic Sea, the number of harbour porpoises (Phocoena phocoena) has collapsed since the mid‐20th century and the Baltic Proper harbour porpoise is listed as Critically Endangered by the IUCN and HELCOM; however, its abundance remains unknown. Here, one of the largest ever passive acoustic monitoring studies was carried out by eight Baltic Sea nations to estimate the abundance of the Baltic Proper harbour porpoise for the first time. By logging porpoise echolocation signals at 298 stations during May 2011–April 2013, calibrating the loggers’ spatial detection performance at sea, and measuring the click rate of tagged individuals, we estimated an abundance of 71–1105 individuals (95% CI, point estimate 491) during May–October within the population's proposed management border. The small abundance estimate strongly supports that the Baltic Proper harbour porpoise is facing an extremely high risk of extinction, and highlights the need for immediate and efficient conservation actions through international cooperation. It also provides a starting point in monitoring the trend of the population abundance to evaluate the effectiveness of management measures and determine its interactions with the larger neighboring Belt Sea population. Further, we offer evidence that design‐based passive acoustic monitoring can generate reliable estimates of the abundance of rare and cryptic animal populations across large spatial scales. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena Directory of Open Access Journals: DOAJ Articles Ecology and Evolution 12 2 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
abundance estimation C‐POD detection function passive acoustic monitoring Phocoena phocoena Ecology QH540-549.5 |
spellingShingle |
abundance estimation C‐POD detection function passive acoustic monitoring Phocoena phocoena Ecology QH540-549.5 Mats Amundin Julia Carlström Len Thomas Ida Carlén Jens Koblitz Jonas Teilmann Jakob Tougaard Nick Tregenza Daniel Wennerberg Olli Loisa Katharina Brundiers Monika Kosecka Line A. Kyhn Cinthia Tiberi Ljungqvist Signe Sveegaard M. Louise Burt Iwona Pawliczka Ivar Jussi Radomil Koza Bartlomiej Arciszewski Anders Galatius Martin Jabbusch Jussi Laaksonlaita Sami Lyytinen Jussi Niemi Aleksej Šaškov Jamie MacAuley Andrew J. Wright Anja Gallus Penina Blankett Michael Dähne Alejandro Acevedo‐Gutiérrez Harald Benke Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring |
topic_facet |
abundance estimation C‐POD detection function passive acoustic monitoring Phocoena phocoena Ecology QH540-549.5 |
description |
Abstract Knowing the abundance of a population is a crucial component to assess its conservation status and develop effective conservation plans. For most cetaceans, abundance estimation is difficult given their cryptic and mobile nature, especially when the population is small and has a transnational distribution. In the Baltic Sea, the number of harbour porpoises (Phocoena phocoena) has collapsed since the mid‐20th century and the Baltic Proper harbour porpoise is listed as Critically Endangered by the IUCN and HELCOM; however, its abundance remains unknown. Here, one of the largest ever passive acoustic monitoring studies was carried out by eight Baltic Sea nations to estimate the abundance of the Baltic Proper harbour porpoise for the first time. By logging porpoise echolocation signals at 298 stations during May 2011–April 2013, calibrating the loggers’ spatial detection performance at sea, and measuring the click rate of tagged individuals, we estimated an abundance of 71–1105 individuals (95% CI, point estimate 491) during May–October within the population's proposed management border. The small abundance estimate strongly supports that the Baltic Proper harbour porpoise is facing an extremely high risk of extinction, and highlights the need for immediate and efficient conservation actions through international cooperation. It also provides a starting point in monitoring the trend of the population abundance to evaluate the effectiveness of management measures and determine its interactions with the larger neighboring Belt Sea population. Further, we offer evidence that design‐based passive acoustic monitoring can generate reliable estimates of the abundance of rare and cryptic animal populations across large spatial scales. |
format |
Article in Journal/Newspaper |
author |
Mats Amundin Julia Carlström Len Thomas Ida Carlén Jens Koblitz Jonas Teilmann Jakob Tougaard Nick Tregenza Daniel Wennerberg Olli Loisa Katharina Brundiers Monika Kosecka Line A. Kyhn Cinthia Tiberi Ljungqvist Signe Sveegaard M. Louise Burt Iwona Pawliczka Ivar Jussi Radomil Koza Bartlomiej Arciszewski Anders Galatius Martin Jabbusch Jussi Laaksonlaita Sami Lyytinen Jussi Niemi Aleksej Šaškov Jamie MacAuley Andrew J. Wright Anja Gallus Penina Blankett Michael Dähne Alejandro Acevedo‐Gutiérrez Harald Benke |
author_facet |
Mats Amundin Julia Carlström Len Thomas Ida Carlén Jens Koblitz Jonas Teilmann Jakob Tougaard Nick Tregenza Daniel Wennerberg Olli Loisa Katharina Brundiers Monika Kosecka Line A. Kyhn Cinthia Tiberi Ljungqvist Signe Sveegaard M. Louise Burt Iwona Pawliczka Ivar Jussi Radomil Koza Bartlomiej Arciszewski Anders Galatius Martin Jabbusch Jussi Laaksonlaita Sami Lyytinen Jussi Niemi Aleksej Šaškov Jamie MacAuley Andrew J. Wright Anja Gallus Penina Blankett Michael Dähne Alejandro Acevedo‐Gutiérrez Harald Benke |
author_sort |
Mats Amundin |
title |
Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring |
title_short |
Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring |
title_full |
Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring |
title_fullStr |
Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring |
title_full_unstemmed |
Estimating the abundance of the critically endangered Baltic Proper harbour porpoise (Phocoena phocoena) population using passive acoustic monitoring |
title_sort |
estimating the abundance of the critically endangered baltic proper harbour porpoise (phocoena phocoena) population using passive acoustic monitoring |
publisher |
Wiley |
publishDate |
2022 |
url |
https://doi.org/10.1002/ece3.8554 https://doaj.org/article/ebd2bbe6847e4023911435a89a5659cf |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
Ecology and Evolution, Vol 12, Iss 2, Pp n/a-n/a (2022) |
op_relation |
https://doi.org/10.1002/ece3.8554 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.8554 https://doaj.org/article/ebd2bbe6847e4023911435a89a5659cf |
op_doi |
https://doi.org/10.1002/ece3.8554 |
container_title |
Ecology and Evolution |
container_volume |
12 |
container_issue |
2 |
_version_ |
1766023006746836992 |