Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean.
This study presents an integrative bioacoustics approach to discriminate eight species of odontocetes found on the outer continental shelf and slope of the western South Atlantic Ocean. Spinner, Atlantic spotted, rough-toothed, Risso's, bottlenose, short-beaked common dolphins, killer and long-...
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ftdoajarticles:oai:doaj.org/article:8401140e85b044d48d9945f899c0979d 2023-05-15T18:20:49+02:00 Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. Thiago Orion Simões Amorim Franciele Rezende de Castro Juliana Rodrigues Moron Bruna Ribeiro Duque Juliana Couto Di Tullio Eduardo Resende Secchi Artur Andriolo 2019-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0217977 https://doaj.org/article/8401140e85b044d48d9945f899c0979d EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0217977 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0217977 https://doaj.org/article/8401140e85b044d48d9945f899c0979d PLoS ONE, Vol 14, Iss 6, p e0217977 (2019) Medicine R Science Q article 2019 ftdoajarticles https://doi.org/10.1371/journal.pone.0217977 2022-12-31T13:19:27Z This study presents an integrative bioacoustics approach to discriminate eight species of odontocetes found on the outer continental shelf and slope of the western South Atlantic Ocean. Spinner, Atlantic spotted, rough-toothed, Risso's, bottlenose, short-beaked common dolphins, killer and long-finned pilot whales were visually confirmed during recordings with a 3-element omnidirectional hydrophone array. Spectral and time parameters of whistles and echolocation clicks were used in a discriminant function analysis and a classification tree model. As a first step, whistles and clicks were analysed separately; a further analysis consisted of both vocalisations jointly classified. All species showed species-specific properties in their vocalisations. Whistles had greater misclassification rates when compared to clicks. The correct classification was enhanced by the joint step, given the 5.8% error in the discriminant function analysis and a misclassification rate of 18.8% in the tree model. In addition, Receiver Operating Characteristic curves resulting from the tree algorithm analysis exhibited better model efficiency for all species in the joint classification. These findings on acoustical discrimination of such abundant and cosmopolitan species contribute to delphinid classification systems. Article in Journal/Newspaper South Atlantic Ocean Directory of Open Access Journals: DOAJ Articles PLOS ONE 14 6 e0217977 |
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English |
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Medicine R Science Q |
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Medicine R Science Q Thiago Orion Simões Amorim Franciele Rezende de Castro Juliana Rodrigues Moron Bruna Ribeiro Duque Juliana Couto Di Tullio Eduardo Resende Secchi Artur Andriolo Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. |
topic_facet |
Medicine R Science Q |
description |
This study presents an integrative bioacoustics approach to discriminate eight species of odontocetes found on the outer continental shelf and slope of the western South Atlantic Ocean. Spinner, Atlantic spotted, rough-toothed, Risso's, bottlenose, short-beaked common dolphins, killer and long-finned pilot whales were visually confirmed during recordings with a 3-element omnidirectional hydrophone array. Spectral and time parameters of whistles and echolocation clicks were used in a discriminant function analysis and a classification tree model. As a first step, whistles and clicks were analysed separately; a further analysis consisted of both vocalisations jointly classified. All species showed species-specific properties in their vocalisations. Whistles had greater misclassification rates when compared to clicks. The correct classification was enhanced by the joint step, given the 5.8% error in the discriminant function analysis and a misclassification rate of 18.8% in the tree model. In addition, Receiver Operating Characteristic curves resulting from the tree algorithm analysis exhibited better model efficiency for all species in the joint classification. These findings on acoustical discrimination of such abundant and cosmopolitan species contribute to delphinid classification systems. |
format |
Article in Journal/Newspaper |
author |
Thiago Orion Simões Amorim Franciele Rezende de Castro Juliana Rodrigues Moron Bruna Ribeiro Duque Juliana Couto Di Tullio Eduardo Resende Secchi Artur Andriolo |
author_facet |
Thiago Orion Simões Amorim Franciele Rezende de Castro Juliana Rodrigues Moron Bruna Ribeiro Duque Juliana Couto Di Tullio Eduardo Resende Secchi Artur Andriolo |
author_sort |
Thiago Orion Simões Amorim |
title |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. |
title_short |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. |
title_full |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. |
title_fullStr |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. |
title_full_unstemmed |
Integrative bioacoustics discrimination of eight delphinid species in the western South Atlantic Ocean. |
title_sort |
integrative bioacoustics discrimination of eight delphinid species in the western south atlantic ocean. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2019 |
url |
https://doi.org/10.1371/journal.pone.0217977 https://doaj.org/article/8401140e85b044d48d9945f899c0979d |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
PLoS ONE, Vol 14, Iss 6, p e0217977 (2019) |
op_relation |
https://doi.org/10.1371/journal.pone.0217977 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0217977 https://doaj.org/article/8401140e85b044d48d9945f899c0979d |
op_doi |
https://doi.org/10.1371/journal.pone.0217977 |
container_title |
PLOS ONE |
container_volume |
14 |
container_issue |
6 |
container_start_page |
e0217977 |
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1766199263351537664 |