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The vertical light-gradient and its potential impact on animal distribution and behavior

Nilsson, Dan E. LU ; Smolka, Jochen LU and Bok, Michael LU (2022) In Frontiers in Ecology and Evolution 10.
Abstract

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... (More)

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.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
animal behavior, behavioral choice, behavioral state, spatiotemporal distribution, vertical light-gradient, vision
in
Frontiers in Ecology and Evolution
volume
10
article number
951328
publisher
Frontiers Media S. A.
external identifiers
  • scopus:85136565213
ISSN
2296-701X
DOI
10.3389/fevo.2022.951328
language
English
LU publication?
yes
id
68d57ecf-09e1-4fa9-8dc4-b7d2cb1018a4
date added to LUP
2022-10-18 08:48:21
date last changed
2023-10-12 10:40:32
@article{68d57ecf-09e1-4fa9-8dc4-b7d2cb1018a4,
  abstract     = {{<p>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.</p>}},
  author       = {{Nilsson, Dan E. and Smolka, Jochen and Bok, Michael}},
  issn         = {{2296-701X}},
  keywords     = {{animal behavior; behavioral choice; behavioral state; spatiotemporal distribution; vertical light-gradient; vision}},
  language     = {{eng}},
  month        = {{08}},
  publisher    = {{Frontiers Media S. A.}},
  series       = {{Frontiers in Ecology and Evolution}},
  title        = {{The vertical light-gradient and its potential impact on animal distribution and behavior}},
  url          = {{http://dx.doi.org/10.3389/fevo.2022.951328}},
  doi          = {{10.3389/fevo.2022.951328}},
  volume       = {{10}},
  year         = {{2022}},
}