Pelagic organisms avoid white, blue, and red artificial light from scientific instruments.
Pelagic organisms avoid white, blue, and red artificial light from scientific instruments.
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DOI：
10.1038/s41598-021-94355-6
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发表时间：
2021-07-22
影响因子：
4.6
通讯作者：
Berge J
中科院分区：
文献类型：
--
作者：
Geoffroy M;Langbehn T;Priou P;Varpe Ø;Johnsen G;Le Bris A;Fisher JAD;Daase M;McKee D;Cohen J;Berge J
用光学仪器对远洋鱼类和浮游动物进行现场观测通常依赖于外部光源。然而，人造光可能会吸引或排斥海洋生物，从而导致测量结果出现偏差。人们通常认为，大多数远洋生物无法感知可见光谱的红色部分，红光可用于生物过程的水下光学测量。使用船体安装回声测深仪以上的声学探头或诱饵摄像机，每个配备不同颜色的光源（白色，蓝色和红色），我们证明，在北极和温带地区的远洋生物强烈避免人工光，包括可见红光（575-700 nm），从仪器降低水柱。生物体的密度下降了高达99%，当暴露于人工光和距离的避免变化从23至94米的光源，根据颜色，辐照度水平，并可能，物种群落。我们的结论是，使用400-700纳米波长的宽光谱组成光源的光学和声学仪器，包括带诱饵的照相机进行的观测不能捕捉生态系统的真实的状态，不能单独用于可靠的丰度估计或行为研究。
In situ observations of pelagic fish and zooplankton with optical instruments usually rely on external light sources. However, artificial light may attract or repulse marine organisms, which results in biased measurements. It is often assumed that most pelagic organisms do not perceive the red part of the visible spectrum and that red light can be used for underwater optical measurements of biological processes. Using hull-mounted echosounders above an acoustic probe or a baited video camera, each equipped with light sources of different colours (white, blue and red), we demonstrate that pelagic organisms in Arctic and temperate regions strongly avoid artificial light, including visible red light (575–700 nm), from instruments lowered in the water column. The density of organisms decreased by up to 99% when exposed to artificial light and the distance of avoidance varied from 23 to 94 m from the light source, depending on colours, irradiance levels and, possibly, species communities. We conclude that observations from optical and acoustic instruments, including baited cameras, using light sources with broad spectral composition in the 400–700 nm wavelengths do not capture the real state of the ecosystem and that they cannot be used alone for reliable abundance estimates or behavioural studies.
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影响因子：
3.7
作者：
Cohen JH;Berge J;Moline MA;Sørensen AJ;Last K;Falk-Petersen S;Renaud PE;Leu ES;Grenvald J;Cottier F;Cronin H;Menze S;Norgren P;Varpe Ø;Daase M;Darnis G;Johnsen G
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影响因子：
3.3
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1.7
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Last, Kim
影响因子：
1.7
作者：
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通讯作者：
Johnsen, Geir