气候变化领域集成服务门户(CCPortal): Soundscape of a Narwhal Summering Ground in a Glacier Fjord (Inglefield Bredning, Greenland)

CCPortal

DOI	10.1029/2020JC016116
	Soundscape of a Narwhal Summering Ground in a Glacier Fjord (Inglefield Bredning, Greenland)
	Podolskiy E.A.; Sugiyama S.
发表日期	2020
ISSN	21699275
卷号	125 期号:5
英文摘要	Narwhal acoustic phonation is embedded in the icy cacophony of one of the noisiest soundscapes in the ocean. The high susceptibility of the narwhal to climate change highlights the need for further efforts to document baseline descriptions of the sounds it produces, especially given the potential anthropogenic impacts on their habitats. However, observations are rare, and narwhal acoustic behavior and habitats are poorly understood (attributed to both the skittish nature of hard-to-approach narwhals and the difficult access to remote and often dangerous glacier fjords). Here, we provide acoustic measurements in a narwhal summering ground in glacial fjords in Northwest Greenland that were mainly collected during Inuit hunting expeditions. This unique observational strategy near a key narwhal hot spot allowed the acquisition of supervised near-source recordings of narwhal vocalizations, which confirms the animal's presence within several hundred meters of an actively calving Bowdoin Glacier. We accurately describe the acoustic signals and noise related to the cetacean, environmental, and anthropogenic sources, show previously unreported signals and their properties, report elevated background noise levels near the calving front, and discuss the general soundscape features of a glacier fjord. The baseline information presented here should encourage long-term follow-up acoustic monitoring in the area and provides an important reference for comparisons with future conditions and other regions. We also anticipate that our work will be a starting point both for the development of criteria to distinguish pulsed calls from terminal buzzes and for a thorough discussion of the dual use of passive acoustic monitoring in traditional hunting practices. ©2020. The Authors.
英文关键词	glacier fjord; Greenland; ice; narwhal; noise; soundscape
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186896
作者单位	Arctic Research Center, Hokkaido University, Sapporo, Japan; GiCORE, Hokkaido University, Sapporo, Japan; Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan
推荐引用方式 GB/T 7714	Podolskiy E.A.,Sugiyama S.. Soundscape of a Narwhal Summering Ground in a Glacier Fjord (Inglefield Bredning, Greenland)[J],2020,125(5).
APA	Podolskiy E.A.,&Sugiyama S..(2020).Soundscape of a Narwhal Summering Ground in a Glacier Fjord (Inglefield Bredning, Greenland).Journal of Geophysical Research: Oceans,125(5).
MLA	Podolskiy E.A.,et al."Soundscape of a Narwhal Summering Ground in a Glacier Fjord (Inglefield Bredning, Greenland)".Journal of Geophysical Research: Oceans 125.5(2020).