Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters
Humpback whales migrate between relatively unproductive tropical or temperate breeding grounds and productive high latitude feeding areas. However, not all individuals of a population undertake the annual migration to the breeding grounds; instead some are thought to remain on the feeding grounds ye...
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ftpubmed:oai:pubmedcentral.nih.gov:3765206 2023-05-15T13:34:08+02:00 Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters Van Opzeeland, Ilse Van Parijs, Sofie Kindermann, Lars Burkhardt, Elke Boebel, Olaf 2013-09-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3765206 https://doi.org/10.1371/journal.pone.0073007 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3765206 http://dx.doi.org/10.1371/journal.pone.0073007 This is an open-access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication. PDM CC0 Research Article Text 2013 ftpubmed https://doi.org/10.1371/journal.pone.0073007 2013-09-15T00:49:11Z Humpback whales migrate between relatively unproductive tropical or temperate breeding grounds and productive high latitude feeding areas. However, not all individuals of a population undertake the annual migration to the breeding grounds; instead some are thought to remain on the feeding grounds year-round, presumably to avoid the energetic demands of migration. In the Southern Hemisphere, ice and inclement weather conditions restrict investigations of humpback whale presence on feeding grounds as well as the extent of their southern range. Two years of near-continuous recordings from the PerenniAL Acoustic Observatory in the Antarctic Ocean (PALAOA, Ekström Iceshelf, 70°31’S, 8°13’W) are used to explore the acoustic presence of humpback whales in an Antarctic coastal area. Humpback whale calls were present during nine and eleven months of 2008 and 2009, respectively. In 2008, calls were present in January through April, June through August, November and December, whereas in 2009, calls were present throughout the year, except in September. Calls occurred in un-patterned sequences, representing non-song sound production. Typically, calls occurred in bouts, ranging from 2 to 42 consecutive days with February, March and April having the highest daily occurrence of calls in 2008. In 2009, February, March, April and May had the highest daily occurrence of calls. Whales were estimated to be within a 100 km radius off PALAOA. Calls were also present during austral winter when ice cover within this radius was >90%. These results demonstrate that coastal areas near the Antarctic continent are likely of greater importance to humpback whales than previously assumed, presumably providing food resources year-round and open water in winter where animals can breathe. Text Antarc* Antarctic Antarctic Ocean Humpback Whale Megaptera novaeangliae PubMed Central (PMC) Antarctic Antarctic Ocean Austral The Antarctic PLoS ONE 8 9 e73007 |
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Research Article Van Opzeeland, Ilse Van Parijs, Sofie Kindermann, Lars Burkhardt, Elke Boebel, Olaf Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters |
topic_facet |
Research Article |
description |
Humpback whales migrate between relatively unproductive tropical or temperate breeding grounds and productive high latitude feeding areas. However, not all individuals of a population undertake the annual migration to the breeding grounds; instead some are thought to remain on the feeding grounds year-round, presumably to avoid the energetic demands of migration. In the Southern Hemisphere, ice and inclement weather conditions restrict investigations of humpback whale presence on feeding grounds as well as the extent of their southern range. Two years of near-continuous recordings from the PerenniAL Acoustic Observatory in the Antarctic Ocean (PALAOA, Ekström Iceshelf, 70°31’S, 8°13’W) are used to explore the acoustic presence of humpback whales in an Antarctic coastal area. Humpback whale calls were present during nine and eleven months of 2008 and 2009, respectively. In 2008, calls were present in January through April, June through August, November and December, whereas in 2009, calls were present throughout the year, except in September. Calls occurred in un-patterned sequences, representing non-song sound production. Typically, calls occurred in bouts, ranging from 2 to 42 consecutive days with February, March and April having the highest daily occurrence of calls in 2008. In 2009, February, March, April and May had the highest daily occurrence of calls. Whales were estimated to be within a 100 km radius off PALAOA. Calls were also present during austral winter when ice cover within this radius was >90%. These results demonstrate that coastal areas near the Antarctic continent are likely of greater importance to humpback whales than previously assumed, presumably providing food resources year-round and open water in winter where animals can breathe. |
format |
Text |
author |
Van Opzeeland, Ilse Van Parijs, Sofie Kindermann, Lars Burkhardt, Elke Boebel, Olaf |
author_facet |
Van Opzeeland, Ilse Van Parijs, Sofie Kindermann, Lars Burkhardt, Elke Boebel, Olaf |
author_sort |
Van Opzeeland, Ilse |
title |
Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters |
title_short |
Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters |
title_full |
Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters |
title_fullStr |
Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters |
title_full_unstemmed |
Calling in the Cold: Pervasive Acoustic Presence of Humpback Whales (Megaptera novaeangliae) in Antarctic Coastal Waters |
title_sort |
calling in the cold: pervasive acoustic presence of humpback whales (megaptera novaeangliae) in antarctic coastal waters |
publisher |
Public Library of Science |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3765206 https://doi.org/10.1371/journal.pone.0073007 |
geographic |
Antarctic Antarctic Ocean Austral The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Austral The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Humpback Whale Megaptera novaeangliae |
genre_facet |
Antarc* Antarctic Antarctic Ocean Humpback Whale Megaptera novaeangliae |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3765206 http://dx.doi.org/10.1371/journal.pone.0073007 |
op_rights |
This is an open-access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication. |
op_rightsnorm |
PDM CC0 |
op_doi |
https://doi.org/10.1371/journal.pone.0073007 |
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PLoS ONE |
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8 |
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9 |
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e73007 |
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1766049264083927040 |