The vertical light-gradient and its potential impact on animal distribution and behavior
The vertical light-gradient and its potential impact on animal distribution and behavior
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DOI：
10.3389/fevo.2022.951328
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发表时间：
2022-08-11
影响因子：
3
通讯作者：
Bok, Michael
中科院分区：
文献类型：
--
作者：
Nilsson, Dan-E;Smolka, Jochen;Bok, Michael
视觉环境提供了重要的线索，使动物能够评估栖息地质量、天气条件或测量一天中的时间。与其他感官线索和生理条件一起，视觉环境设定了行为状态，使动物更容易参与某些行为，而较少参与其他行为。这种对行为的主控在决定所有动物的分布和行为方面发挥着基础和重要的作用。尽管显然视觉信息包含设置行为状态的重要输入，但这些视觉线索的确切性质仍然未知。在这里，我们使用最近描述的方法来量化不同环境中到达动物眼睛的光的分布。该方法记录强度、空间结构和光谱平衡的垂直梯度（作为仰角的函数）。对不同类型的环境、天气条件、一天中的时间和季节的测量结果进行比较表明，这些方面很容易相互区分。因此，辐射、空间结构（对比度）和颜色的垂直梯度是可靠的指标，可能对动物行为和空间分布产生强烈影响。
The visual environment provides vital cues allowing animals to assess habitat quality, weather conditions or measure time of day. Together with other sensory cues and physiological conditions, the visual environment sets behavioral states that make the animal more prone to engage in some behaviors, and less in others. This master-control of behavior serves a fundamental and essential role in determining the distribution and behavior of all animals. Although it is obvious that visual information contains vital input for setting behavioral states, the precise nature of these visual cues remains unknown. Here we use a recently described method to quantify the distribution of light reaching animals' eyes in different environments. The method records the vertical gradient (as a function of elevation angle) of intensity, spatial structure and spectral balance. Comparison of measurements from different types of environments, weather conditions, times of day, and seasons reveal that these aspects can be readily discriminated from one another. The vertical gradients of radiance, spatial structure (contrast) and color are thus reliable indicators that are likely to have a strong impact on animal behavior and spatial distribution.