Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types
International audience A decrease in the frequency of two southeast Pacific blue whale song types was examined over decades, using acoustic data from several different sources in the eastern Pacific Ocean ranging between the Equator and Chilean Patagonia. The pulse rate of the song units as well as...
Published in: | Scientific Reports |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-02586669 https://hal.science/hal-02586669/document https://hal.science/hal-02586669/file/2020_malige_et_al_inter-annual_decrease_in_pulse_rate_and_peak_frequency_of_Southeast_Pacific_blue_whale_song_types.pdf https://doi.org/10.1038/s41598-020-64613-0 |
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Open Polar |
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Aix-Marseille Université: HAL |
op_collection_id |
ftunivaixmarseil |
language |
English |
topic |
frequency decrease blue whale song [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] [SDV.BA]Life Sciences [q-bio]/Animal biology |
spellingShingle |
frequency decrease blue whale song [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] [SDV.BA]Life Sciences [q-bio]/Animal biology Malige, Franck Patris, Julie Buchan, Susannah, J Stafford, Kathleen, M Shabangu, Fannie Findlay, Ken Hucke-Gaete, Rodrigo Neira, Sergio Clark, Christopher Glotin, Hervé Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types |
topic_facet |
frequency decrease blue whale song [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] [SDV.BA]Life Sciences [q-bio]/Animal biology |
description |
International audience A decrease in the frequency of two southeast Pacific blue whale song types was examined over decades, using acoustic data from several different sources in the eastern Pacific Ocean ranging between the Equator and Chilean Patagonia. The pulse rate of the song units as well as their peak frequency were measured using two different methods (summed auto-correlation and Fourier transform). The sources of error associated with each measurement were assessed. There was a linear decline in both parameters for the more common song type (southeast Pacific song type n.2) between 1997 to 2017. An abbreviated analysis, also showed a frequency decline in the scarcer southeast Pacific song type n.1 between 1970 to 2014, revealing that both song types are declining at similar rates. We discussed the use of measuring both pulse rate and peak frequency to examine the frequency decline. Finally, a comparison of the rates of frequency decline with other song types reported in the literature and a discussion on the reasons of the frequency shift are presented. Blue whale (Balaenoptera musculus) songs are the repetition of several highly stereotyped low-frequency, high energy units that compose song phrases, first described in 1971 1. Song units and phrases have been qualified as'remarkably consistent' within a song, but also between individuals 1. Song in blue whales has been attributed to reproductive display by males 2. Numerous, distinct songs have been identified worldwide 3 , each displaying stability in the temporal and frequency characteristics of units and phrases and intervals between units or phrases. However, this global pattern has been shown to be affected by a general decreasing trend in frequency over dec-adal timescales 4. This linear decline in tonal frequencies of blue whale song types is a recently described unexplained phenomenon. It appears to occur worldwide, based on analyses of different regional song types, spanning five decades 4. New studies have recently confirmed these results ... |
author2 |
Laboratoire d'Informatique et des Systèmes (LIS) (Marseille, Toulon) (LIS) Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) DYNamiques de l’Information (DYNI) Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Aix Marseille Université (AMU) Centro de Estudios Avanzados en Zonas Aridas (CEAZA) Centro de Investigación Oceanográfica en el Pacífico Sur Oriental (COPAS) Universidad de Concepción - University of Concepcion Chile Cornell University New York Université de Toulon (UTLN) ANR-18-CE40-0014,SMILES,Modélisation et Inférence Statistique pour l'Apprentissage non-supervisé à partir de Données Massives(2018) |
format |
Article in Journal/Newspaper |
author |
Malige, Franck Patris, Julie Buchan, Susannah, J Stafford, Kathleen, M Shabangu, Fannie Findlay, Ken Hucke-Gaete, Rodrigo Neira, Sergio Clark, Christopher Glotin, Hervé |
author_facet |
Malige, Franck Patris, Julie Buchan, Susannah, J Stafford, Kathleen, M Shabangu, Fannie Findlay, Ken Hucke-Gaete, Rodrigo Neira, Sergio Clark, Christopher Glotin, Hervé |
author_sort |
Malige, Franck |
title |
Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types |
title_short |
Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types |
title_full |
Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types |
title_fullStr |
Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types |
title_full_unstemmed |
Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types |
title_sort |
inter-annual decrease in pulse rate and peak frequency of southeast pacific blue whale song types |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02586669 https://hal.science/hal-02586669/document https://hal.science/hal-02586669/file/2020_malige_et_al_inter-annual_decrease_in_pulse_rate_and_peak_frequency_of_Southeast_Pacific_blue_whale_song_types.pdf https://doi.org/10.1038/s41598-020-64613-0 |
genre |
Balaenoptera musculus Blue whale |
genre_facet |
Balaenoptera musculus Blue whale |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.science/hal-02586669 Scientific Reports, 2020, 10 (1), pp.8121. ⟨10.1038/s41598-020-64613-0⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-020-64613-0 hal-02586669 https://hal.science/hal-02586669 https://hal.science/hal-02586669/document https://hal.science/hal-02586669/file/2020_malige_et_al_inter-annual_decrease_in_pulse_rate_and_peak_frequency_of_Southeast_Pacific_blue_whale_song_types.pdf doi:10.1038/s41598-020-64613-0 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41598-020-64613-0 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
_version_ |
1796939300317691904 |
spelling |
ftunivaixmarseil:oai:HAL:hal-02586669v1 2024-04-21T07:57:52+00:00 Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types Malige, Franck Patris, Julie Buchan, Susannah, J Stafford, Kathleen, M Shabangu, Fannie Findlay, Ken Hucke-Gaete, Rodrigo Neira, Sergio Clark, Christopher Glotin, Hervé Laboratoire d'Informatique et des Systèmes (LIS) (Marseille, Toulon) (LIS) Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) DYNamiques de l’Information (DYNI) Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Aix Marseille Université (AMU) Centro de Estudios Avanzados en Zonas Aridas (CEAZA) Centro de Investigación Oceanográfica en el Pacífico Sur Oriental (COPAS) Universidad de Concepción - University of Concepcion Chile Cornell University New York Université de Toulon (UTLN) ANR-18-CE40-0014,SMILES,Modélisation et Inférence Statistique pour l'Apprentissage non-supervisé à partir de Données Massives(2018) 2020-05-15 https://hal.science/hal-02586669 https://hal.science/hal-02586669/document https://hal.science/hal-02586669/file/2020_malige_et_al_inter-annual_decrease_in_pulse_rate_and_peak_frequency_of_Southeast_Pacific_blue_whale_song_types.pdf https://doi.org/10.1038/s41598-020-64613-0 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-020-64613-0 hal-02586669 https://hal.science/hal-02586669 https://hal.science/hal-02586669/document https://hal.science/hal-02586669/file/2020_malige_et_al_inter-annual_decrease_in_pulse_rate_and_peak_frequency_of_Southeast_Pacific_blue_whale_song_types.pdf doi:10.1038/s41598-020-64613-0 info:eu-repo/semantics/OpenAccess ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal.science/hal-02586669 Scientific Reports, 2020, 10 (1), pp.8121. ⟨10.1038/s41598-020-64613-0⟩ frequency decrease blue whale song [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] [SDV.BA]Life Sciences [q-bio]/Animal biology info:eu-repo/semantics/article Journal articles 2020 ftunivaixmarseil https://doi.org/10.1038/s41598-020-64613-0 2024-04-11T00:28:20Z International audience A decrease in the frequency of two southeast Pacific blue whale song types was examined over decades, using acoustic data from several different sources in the eastern Pacific Ocean ranging between the Equator and Chilean Patagonia. The pulse rate of the song units as well as their peak frequency were measured using two different methods (summed auto-correlation and Fourier transform). The sources of error associated with each measurement were assessed. There was a linear decline in both parameters for the more common song type (southeast Pacific song type n.2) between 1997 to 2017. An abbreviated analysis, also showed a frequency decline in the scarcer southeast Pacific song type n.1 between 1970 to 2014, revealing that both song types are declining at similar rates. We discussed the use of measuring both pulse rate and peak frequency to examine the frequency decline. Finally, a comparison of the rates of frequency decline with other song types reported in the literature and a discussion on the reasons of the frequency shift are presented. Blue whale (Balaenoptera musculus) songs are the repetition of several highly stereotyped low-frequency, high energy units that compose song phrases, first described in 1971 1. Song units and phrases have been qualified as'remarkably consistent' within a song, but also between individuals 1. Song in blue whales has been attributed to reproductive display by males 2. Numerous, distinct songs have been identified worldwide 3 , each displaying stability in the temporal and frequency characteristics of units and phrases and intervals between units or phrases. However, this global pattern has been shown to be affected by a general decreasing trend in frequency over dec-adal timescales 4. This linear decline in tonal frequencies of blue whale song types is a recently described unexplained phenomenon. It appears to occur worldwide, based on analyses of different regional song types, spanning five decades 4. New studies have recently confirmed these results ... Article in Journal/Newspaper Balaenoptera musculus Blue whale Aix-Marseille Université: HAL Scientific Reports 10 1 |