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灰色海 (Halichoerus grypus) 的水下音频图

Andreas Ruser¹, Kirstin Anderson Hansen^1,2, Magnus Wahlberg²

¹Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, 25761 Büsum, Germany.

|August 11, 2025

概括

灰海 (Halichoerus grypus) 显示出优异的高频听力,但它们增强的低频敏感性可能会增加对水下噪声的脆弱性. 目前的噪音影响评估可能需要对这种物种进行调整.

科学领域:

海洋生物学海洋生物学
生物声学是一种生物声学.
听觉科学是一种听觉科学.

背景情况:

了解海洋哺乳动物的听力对于评估人为噪音影响至关重要.
灰海 (Halichoerus grypus) 是北大西洋主要的足动物.
现有的鱼听力图为噪音影响评估提供信息.

研究的目的:

测量灰色海在广泛频率范围内水下听觉灵敏度.
为了比较灰海听力与其他海.
评估当前福西德音频图像对于灰色海噪声影响评估的适用性.

主要方法:

用于确定听力值的精神物理阶梯方法.
在两个成年灰色海上进行的测试.
从0.125到64 kHz的频率生成的音频.

主要成果:

两种海的最佳听觉灵敏度在4 kHz (43-44 dB re 1 μPa) 观察到.
灰色海具有与其他海类动物相比的高频听力.
低于8kHz的灵敏度比预期的要好,这表明低频听力更为重要.

结论:

灰色海的低频听力可能比以前所认为的更为显著.
这种增强的低频敏感性可能会增加对人为噪音的脆弱性.
当前的鱼频率权衡功能可能低估了对灰海的噪音影响,可能需要修订.

关键词:

音频节目音频节目音频节目灰色的海印记在这是一个Pinniped的Pinniped.心理物理学的精神物理.水下听力听力水下听力听力

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