Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific
Abstract Passive acoustic data were collected January 2012 to April 2013 at four sites in the Chiloense Ecoregion ( CER ) in southern Chile (≈43°S–44°S, 71°W–73°W) and 1996–2002 from one site in the eastern tropical Pacific ( ETP ) (8°S, 95°W). Automatic detectors were used to detect the two songs (...
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crwiley:10.1111/mms.12173 2024-09-15T18:00:03+00:00 Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific Buchan, Susannah J. Stafford, Kathleen M. Hucke‐Gaete, Rodrigo CONICYT COPAS Sur-Austral 2014 http://dx.doi.org/10.1111/mms.12173 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12173 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12173 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Mammal Science volume 31, issue 2, page 440-458 ISSN 0824-0469 1748-7692 journal-article 2014 crwiley https://doi.org/10.1111/mms.12173 2024-07-30T04:23:09Z Abstract Passive acoustic data were collected January 2012 to April 2013 at four sites in the Chiloense Ecoregion ( CER ) in southern Chile (≈43°S–44°S, 71°W–73°W) and 1996–2002 from one site in the eastern tropical Pacific ( ETP ) (8°S, 95°W). Automatic detectors were used to detect the two songs ( SEP 1 and SEP 2) described for southeast Pacific ( SEP ) blue whales. There was a strong seasonal pattern of occurrence of SEP songs in the CER from December to August, peaking March to May. In the ETP , the occurrence of songs was an order of magnitude lower but songs were present year‐round, with a peak around June. These findings support austral summer/autumn seasonal residency in the CER and a seasonal movement of blue whales towards the ETP during June/July, returning in December. Interannual differences in the ETP were possibly linked to the 1997–1998 El Niño event. At both study sites, SEP 2 was significantly more common than SEP 1; both songs largely followed the same temporal trends. These findings contribute to our understanding of the seasonal movements of endangered SEP blue whales and can inform conservation strategies, particularly in the CER coastal feeding ground. We recommend future year‐round passive acoustic studies in the CER and the ETP ( e.g ., near the Galapagos Islands), ideally coupled with oceanographic data. Article in Journal/Newspaper Blue whale Wiley Online Library Marine Mammal Science 31 2 440 458 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Passive acoustic data were collected January 2012 to April 2013 at four sites in the Chiloense Ecoregion ( CER ) in southern Chile (≈43°S–44°S, 71°W–73°W) and 1996–2002 from one site in the eastern tropical Pacific ( ETP ) (8°S, 95°W). Automatic detectors were used to detect the two songs ( SEP 1 and SEP 2) described for southeast Pacific ( SEP ) blue whales. There was a strong seasonal pattern of occurrence of SEP songs in the CER from December to August, peaking March to May. In the ETP , the occurrence of songs was an order of magnitude lower but songs were present year‐round, with a peak around June. These findings support austral summer/autumn seasonal residency in the CER and a seasonal movement of blue whales towards the ETP during June/July, returning in December. Interannual differences in the ETP were possibly linked to the 1997–1998 El Niño event. At both study sites, SEP 2 was significantly more common than SEP 1; both songs largely followed the same temporal trends. These findings contribute to our understanding of the seasonal movements of endangered SEP blue whales and can inform conservation strategies, particularly in the CER coastal feeding ground. We recommend future year‐round passive acoustic studies in the CER and the ETP ( e.g ., near the Galapagos Islands), ideally coupled with oceanographic data. |
author2 |
CONICYT COPAS Sur-Austral |
format |
Article in Journal/Newspaper |
author |
Buchan, Susannah J. Stafford, Kathleen M. Hucke‐Gaete, Rodrigo |
spellingShingle |
Buchan, Susannah J. Stafford, Kathleen M. Hucke‐Gaete, Rodrigo Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific |
author_facet |
Buchan, Susannah J. Stafford, Kathleen M. Hucke‐Gaete, Rodrigo |
author_sort |
Buchan, Susannah J. |
title |
Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific |
title_short |
Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific |
title_full |
Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific |
title_fullStr |
Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific |
title_full_unstemmed |
Seasonal occurrence of southeast Pacific blue whale songs in southern Chile and the eastern tropical Pacific |
title_sort |
seasonal occurrence of southeast pacific blue whale songs in southern chile and the eastern tropical pacific |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1111/mms.12173 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmms.12173 https://onlinelibrary.wiley.com/doi/pdf/10.1111/mms.12173 |
genre |
Blue whale |
genre_facet |
Blue whale |
op_source |
Marine Mammal Science volume 31, issue 2, page 440-458 ISSN 0824-0469 1748-7692 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/mms.12173 |
container_title |
Marine Mammal Science |
container_volume |
31 |
container_issue |
2 |
container_start_page |
440 |
op_container_end_page |
458 |
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1810437164442320896 |