Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event
Funding: The authors are grateful to our sponsors of the 2019–2020 aerial surveys including Dave Jung of Hawaii Ocean Project, Whale Trust, University of Hawaiʻi at Hilo, and The Dolphin Institute. Nina Forsyth was instrumental in organizing a GoFundMe drive that provided additional funding. After d...
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Online Access: | https://hdl.handle.net/10023/29534 https://doi.org/10.1111/mms.13018 |
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/29534 2024-04-21T08:04:22+00:00 Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event Mobley Jr., Joseph R. Deakos, Mark H. Pack, Adam A. Bortolotto, Guilherme A. University of St Andrews. School of Biology 2024-03-20 16 425043 application/pdf https://hdl.handle.net/10023/29534 https://doi.org/10.1111/mms.13018 eng eng Marine Mammal Science 281023931 26b2ea6b-a8bf-4db8-9ec7-c0e128798151 85150824519 Mobley Jr. , J R , Deakos , M H , Pack , A A & Bortolotto , G A 2023 , ' Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event ' , Marine Mammal Science , vol. 19 , no. 3 , pp. 842-857 . https://doi.org/10.1111/mms.13018 0824-0469 ORCID: /0000-0002-5343-6575/work/131588811 https://hdl.handle.net/10023/29534 doi:10.1111/mms.13018 Climate change Conservation Density Distance sampling Humpback whales Megaptera novaeangliae Pacific Marine Heatwave (PMH) Resilience GE Environmental Sciences QL Zoology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water AC MCC GE QL Journal article 2024 ftstandrewserep https://doi.org/10.1111/mms.13018 2024-03-27T15:07:39Z Funding: The authors are grateful to our sponsors of the 2019–2020 aerial surveys including Dave Jung of Hawaii Ocean Project, Whale Trust, University of Hawaiʻi at Hilo, and The Dolphin Institute. Nina Forsyth was instrumental in organizing a GoFundMe drive that provided additional funding. After decades of population growth, the central stock of the North Pacific population of humpback whales, known as the Hawaiʻi Distinct Population Segment (HDPS), was delisted from its endangered status in 2016. At that time, however, an unprecedented heating event, the Pacific Marine Heatwave (PMH) was already underway. The PMH coincided with reports of major declines of sightings of humpback whales, including calves of the year, on both the Hawaiian wintering grounds and the feeding grounds of Southeast Alaska. To examine the resiliency of the HDPS, we conducted aerial surveys of the high-density Maui Nui region immediately following the PMH event in 2019 and 2020, using distance sampling methods identical to those used in an earlier series (1993–2003). Results showed whale densities at or above those seen earlier, with mean density for 2020 highest overall. Crude birth rates (percent groups containing a calf) were similarly comparable to those recorded in the earlier series, with an increase from 2019 to 2020. Overall, results suggest the central North Pacific humpback whale population stock to be resilient in the face of this major climatic event. Peer reviewed Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae Alaska University of St Andrews: Digital Research Repository Marine Mammal Science 39 3 842 857 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
Climate change Conservation Density Distance sampling Humpback whales Megaptera novaeangliae Pacific Marine Heatwave (PMH) Resilience GE Environmental Sciences QL Zoology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water AC MCC GE QL |
spellingShingle |
Climate change Conservation Density Distance sampling Humpback whales Megaptera novaeangliae Pacific Marine Heatwave (PMH) Resilience GE Environmental Sciences QL Zoology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water AC MCC GE QL Mobley Jr., Joseph R. Deakos, Mark H. Pack, Adam A. Bortolotto, Guilherme A. Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event |
topic_facet |
Climate change Conservation Density Distance sampling Humpback whales Megaptera novaeangliae Pacific Marine Heatwave (PMH) Resilience GE Environmental Sciences QL Zoology NDAS SDG 13 - Climate Action SDG 14 - Life Below Water AC MCC GE QL |
description |
Funding: The authors are grateful to our sponsors of the 2019–2020 aerial surveys including Dave Jung of Hawaii Ocean Project, Whale Trust, University of Hawaiʻi at Hilo, and The Dolphin Institute. Nina Forsyth was instrumental in organizing a GoFundMe drive that provided additional funding. After decades of population growth, the central stock of the North Pacific population of humpback whales, known as the Hawaiʻi Distinct Population Segment (HDPS), was delisted from its endangered status in 2016. At that time, however, an unprecedented heating event, the Pacific Marine Heatwave (PMH) was already underway. The PMH coincided with reports of major declines of sightings of humpback whales, including calves of the year, on both the Hawaiian wintering grounds and the feeding grounds of Southeast Alaska. To examine the resiliency of the HDPS, we conducted aerial surveys of the high-density Maui Nui region immediately following the PMH event in 2019 and 2020, using distance sampling methods identical to those used in an earlier series (1993–2003). Results showed whale densities at or above those seen earlier, with mean density for 2020 highest overall. Crude birth rates (percent groups containing a calf) were similarly comparable to those recorded in the earlier series, with an increase from 2019 to 2020. Overall, results suggest the central North Pacific humpback whale population stock to be resilient in the face of this major climatic event. Peer reviewed |
author2 |
University of St Andrews. School of Biology |
format |
Article in Journal/Newspaper |
author |
Mobley Jr., Joseph R. Deakos, Mark H. Pack, Adam A. Bortolotto, Guilherme A. |
author_facet |
Mobley Jr., Joseph R. Deakos, Mark H. Pack, Adam A. Bortolotto, Guilherme A. |
author_sort |
Mobley Jr., Joseph R. |
title |
Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event |
title_short |
Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event |
title_full |
Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event |
title_fullStr |
Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event |
title_full_unstemmed |
Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event |
title_sort |
aerial survey perspectives on humpback whale resiliency in maui nui, hawaiʻi, in the face of an unprecedented north pacific marine warming event |
publishDate |
2024 |
url |
https://hdl.handle.net/10023/29534 https://doi.org/10.1111/mms.13018 |
genre |
Humpback Whale Megaptera novaeangliae Alaska |
genre_facet |
Humpback Whale Megaptera novaeangliae Alaska |
op_relation |
Marine Mammal Science 281023931 26b2ea6b-a8bf-4db8-9ec7-c0e128798151 85150824519 Mobley Jr. , J R , Deakos , M H , Pack , A A & Bortolotto , G A 2023 , ' Aerial survey perspectives on humpback whale resiliency in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine warming event ' , Marine Mammal Science , vol. 19 , no. 3 , pp. 842-857 . https://doi.org/10.1111/mms.13018 0824-0469 ORCID: /0000-0002-5343-6575/work/131588811 https://hdl.handle.net/10023/29534 doi:10.1111/mms.13018 |
op_doi |
https://doi.org/10.1111/mms.13018 |
container_title |
Marine Mammal Science |
container_volume |
39 |
container_issue |
3 |
container_start_page |
842 |
op_container_end_page |
857 |
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1796943975876132864 |