濒危夏威夷僧海豹重要栖息地内的水下声景:对保护的影响

IF 2.6 2区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Endangered Species Research Pub Date : 2024-06-27 DOI:10.3354/esr01336
Kirby Parnell, Karlina Merkens, Chloé Huetz, Isabelle Charrier, Stacie J. Robinson, Aude Pacini, Lars Bejder
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引用次数: 0

摘要

摘要:对海洋哺乳动物重要栖息地的水下声景进行研究,可以提供有关依赖声音的动物所利用的声学环境的宝贵信息。对于濒危的夏威夷僧海豹(Neomonachus schauinslandi,HMS)来说,人们对其水生栖息地的声学环境知之甚少。我们在夏威夷僧海豹的 4 个浅水关键栖息地测量了环境噪声水平并描述了声源特征。宽带声级范围为 107.8-123.4 dB re 1 µPa。倍频程声级显示出与掩盖马氏海马发声的生物和人为声源相关的昼夜模式。生物声源在所有地点都占主导地位。我们随机记录了 2 次大规模地声事件:道格拉斯飓风(4 级)和 6.2 级地震。这项研究首次描述了海马在其广阔分布区的重要栖息地的水下声景。这些测量结果可作为未来研究的基线,以了解人类活动对水下声景的影响。
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Underwater soundscapes within critical habitats of the endangered Hawaiian monk seal: implications for conservation
ABSTRACT: Studying underwater soundscapes of critical habitats of marine mammals can provide valuable information on the acoustic environment utilized by sound-reliant animals. For the endangered Hawaiian monk seal Neomonachus schauinslandi (HMS), the acoustic scene of their aquatic habitats is poorly understood. We measured ambient noise levels and characterized sound sources at 4 shallow critical habitats of the HMS. Broadband levels ranged from 107.8-123.4 dB re 1 µPa. Octave band levels showed diel patterns associated with biological and anthropogenic sources that mask HMS vocalizations. Biological sources dominated the soundscape at all sites. We opportunistically recorded 2 large-scale geophonic events: Hurricane Douglas (Category 4) and a 6.2 magnitude earthquake. This study provides the first description of underwater soundscapes at critical habitats of the HMS across its expansive range. These measurements serve as a baseline for future studies to understand the impacts of human activities on underwater soundscapes.
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来源期刊
Endangered Species Research
Endangered Species Research BIODIVERSITY CONSERVATION-
CiteScore
5.50
自引率
6.50%
发文量
38
审稿时长
31 weeks
期刊介绍: ESR is international and interdisciplinary. It covers all endangered forms of life on Earth, the threats faced by species and their habitats and the necessary steps that must be undertaken to ensure their conservation. ESR publishes high quality contributions reporting research on all species (and habitats) of conservation concern, whether they be classified as Near Threatened or Threatened (Endangered or Vulnerable) by the International Union for the Conservation of Nature and Natural Resources (IUCN) or highlighted as part of national or regional conservation strategies. Submissions on all aspects of conservation science are welcome.
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