[MARMAM] New publication: "Aerial survey perspectives on humpback whale resiliency..."

Joseph Mobley jmobley at hawaii.edu
Mon Mar 27 12:28:40 PDT 2023


Aloha all:

My coauthors and I are pleased to announce the online publication of our
article entitled: "Aerial survey perspectives on humpback whale resiliency
in Maui Nui, Hawaiʻi, in the face of an unprecedented North Pacific marine
warming event," in Marine Mammal Science.

Citation:
Mobley, J. R. Jr, 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*, 1–16. https://doi.org/10.1111/mms.13018.

Abstract:
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.

Link to read-only pdf:
https://onlinelibrary.wiley.com/share/author/RWW2EG3DHIDZ62TMIQHJ?target=10.1111/mms.13018

Feel free to contact me if any questions: jmobley at hawaii.edu

--Joe
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