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96 results for “Artificial light at night”
Effects of artificial light at night on urban and rural spiny toads Bufo spinosus
<p>The dataset contains the results from several experiments on the response to artificial light at night of adult males of spiny toads (Bufo spinosus). Toads originated from 3 rural sites and 3 rural sites in western France. The tests were carried out in March and April 2023.</p> <ol> <li>Exploration behaviour in testing arena</li> <li>Sensitivity to glare in testing arena</li> <li>Crossing of light obstacle (light strip in a dark testing corridor)</li> <li>Pupillary light reflex</li> <li>Change in body weight between the start and the end of the experiment</li> </ol>
Dataset of publications focused on artificial light at night in fishes (up to January 2021)
<p>Summary of publications focused on artificial light in fishes (as identified by search in Web of Science Core Collection; January 2021) with designation of whether they pertain to light pollution or other contexts (e.g., bycatch reduction, aquaculture). The types of effects studied are also designated (e.g., behaviour, physiology, community structure).</p>
Data from: Low-cost automated flight intercept trap for the temporal sub-sampling of flying insects attracted to artificial light at night
<p>Sampling methods are selected depending on the targeted species or the spatial and temporal requirements of the study. However, most methods for passive sampling of flying insects have poor temporal resolution because it is time consuming, costly and/or logistically difficult. Effective sampling of flying insects attracted to artificial light at night (ALAN) requires sampling at user-defined time points (nighttime only) across well-replicated sites resulting in major time and labor-intensive survey effort or expensive automated technologies. Described here is a low-cost automated intercept trap that requires no specialist equipment or skills to construct and operate, making it a viable option for studies that require temporal sub-sampling across multiple sites. The trap can be used to address a wide range of other ecological questions that require a greater temporal and spatial scale than is feasible with previous trap technology.</p>
Data from: Artificial light at night may decrease predation risk for terrestrial insects
<p>Artificial light at night (ALAN) is thought to be detrimental for terrestrial insect populations. Whilst there exists evidence for lower abundance under ALAN, underlying mechanisms remain unclear. One mechanism by which ALAN may contribute to insect declines may be through facilitating increased predation. We investigated this by experimentally manipulating insect-substitute abundance under differential levels of light. We used insect-containing birdfeed placed at varying distances from streetlights as a proxy for terrestrial insects, inspecting the rate of predation before and after dusk (when streetlights are respectively off and on). We found that there was a significantly greater effect of increasing distance on predation after dusk, suggesting that predation was actually reduced by greater levels of artificial light. This may occur because ALAN also increases the vulnerability of insectivores to their own predators. Implications for foraging behaviour and alternative explanations are discussed.</p>
Data from: Artificial light at night confounds broad-scale habitat use by migrating birds
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Data from: Individual-based measurements of light intensity provide new insights into the effects of artificial light at night on daily rhythms of urban-dwelling songbirds
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Data from: Artificial light at night advances avian reproductive physiology
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Artificial light at night erases positive interactions across trophic levels
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Data from: Artificial light at night may decrease predation risk for terrestrial insects
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Data from: Artificial light at night does not affect telomere shortening in a developing free-living songbird: a field experiment
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Data from: Artificial night lighting inhibits feeding in moths
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Data from: Altered breeding biology of the European blackbird under artificial light at night
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Data from: Artificial lighting at night alters aquatic-riparian invertebrate food webs
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Artificial light at night amplifies seasonal relapse of haemosporidian parasites in a widespread songbird
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Data from: Low-cost automated flight intercept trap for the temporal sub-sampling of flying insects attracted to artificial light at night
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Data from: Artificial light at night decreases metamorphic duration and juvenile growth in a widespread amphibian
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A meta-analysis of biological impacts of artificial light at night
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Exposure to artificial light at night alters innate immune response in wild great tit nestlings
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Data from: Artificial light at night causes top-down and bottom-up trophic effects on invertebrate populations
1. Globally, many ecosystems are exposed to artificial light at night. Nighttime lighting has direct biological impacts on species at all trophic levels. However, the effects of artificial light on biotic interactions largely remain to be determined. 2. We exposed experimental mesocosms containing combinations of grassland plants and invertebrate herbivores and predators to illumination at night over a three-year period to simulate conditions under different common forms of street lighting. 3. We demonstrate both top-down (predation controlled) and bottom-up (resource controlled) impacts of artificial light at night in grassland communities. The impacts on invertebrate herbivore abundance were wavelength dependent and mediated via other trophic levels. 4. White LED lighting decreased the abundance of a generalist herbivore mollusc by 55% in the presence of a visual predator, but not in its absence, while monochromatic amber light (with a peak wavelength similar to low pressure sodium lighting) decreased abundance of a specialist herbivore aphid (by 17%) by reducing the cover and flower abundance of its main food plant in the system. Artificial white light also significantly increased the food plant's foliar carbon to nitrogen ratio. 5. We conclude that exposure to artificial light at night can trigger ecological effects spanning trophic levels, and that the nature of such impacts depends on the wavelengths emitted by the lighting technology employed. 6. Policy implications Our results confirm that artificial light at night, at illuminance levels similar to roadside vegetation, can have population effects mediated by both top-down and bottom-up effects on ecosystems. Given the increasing ubiquity of light pollution at night, these impacts may be widespread in the environment. These results underlines the importance of minimising disruption of natural ecosystems by reducing light pollution into natural and semi-natural ecosystems.26-Jun-2018
Data from: Illuminating prey selection in an insectivorous bat community, exposed to artificial light at night
1.Light pollution has been increasing around the globe and threatens to disturb natural rhythms of wildlife species. Artificial light impacts the behaviour of insectivorous bats in numerous ways, including foraging behaviour, which may in turn lead to altered prey selection. 2.In a manipulative field experiment, we collected faecal samples from six species of insectivorous bats in naturally dark and artificially lit conditions, and identified prey items using molecular methods to investigate effects of light pollution on prey selection. 3.Proportional differences of identified prey were not consistent and appeared to be species specific. Red bats, little brown bats, and gray bats exhibited expected increases in moths at lit sites. Beetle-specialist big brown bats had a sizeable increase in beetle consumption around lights, while tri-colored bats and evening bats showed little change in moth consumption between experimental conditions. Dietary overlap was high between experimental conditions within each species, and dietary breadth only changed significantly between experimental conditions in one species, the little brown bat. 4.Policy implications. Our results, building on others, demonstrate that bat-insect interactions may be more nuanced than the common assertion that moth consumption increases around lights. They highlight the need for a greater mechanistic understanding of bat-light interactions to predict which species will be most affected by light pollution. Given differences in bat and insect communities, we advocate biologists, land stewards, and civil planners work collaboratively to determine lighting solutions that minimize changes in foraging behaviour of species in the local bat community. Such efforts may allow stakeholders to more effectively craft management strategies to minimize unnatural shifts in prey selection caused by artificial lights.
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OpenNeuro
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