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143 results for “Artificial light”
Data from: Anthropogenic noise, but not artificial light levels predicts song behaviour in an equatorial bird
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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.
Data from: Artificial light at night alters trophic interactions of intertidal invertebrates
Despite being globally widespread in coastal regions, the impacts of light pollution on intertidal ecosystems has received little attention. Intertidal species exhibit many night-time-dependent ecological strategies, including feeding, reproduction, orientation and predator avoidance, which are likely negatively affected by shifting light regimes, as has been observed in terrestrial and aquatic taxa. Coastal lighting may shape intertidal communities through its influence on the nocturnal foraging activity of dogwhelks (Nucella lapillus), a widespread predatory mollusc that structures biodiversity in temperate rocky shores. In the laboratory, we investigated whether the basal and foraging activity of this predator was affected by exposure to night-time lighting both in the presence and absence of olfactory predator cues (Carcinus maenas, common shore crab). Assessments of dogwhelks' behavioural responses to night-time white LED lighting were performed on individuals that had been acclimated to night-time white LED lighting conditions for 16 days and individuals that had not previously been exposed to artificial light at night. Dogwhelks acclimated to night-time lighting exhibited natural refuge-seeking behaviour less often compared to control animals, but were more likely to respond to and handle prey irrespective of whether olfactory predator cues were present. These responses suggest night-time lighting likely increased the energetic demand of dogwhelks through stress, encouraging foraging whenever food was available, regardless of potential danger. Contrastingly, whelks not acclimated under night-time lighting were more likely to respond to the presence of prey under artificial light at night when olfactory predator cues were present, indicating an opportunistic shift towards the use of visual instead of olfactory cues in risk evaluation. These results demonstrate that artificial night-time lighting influences the behaviour of intertidal fauna such that the balance of interspecific interactions involved in community structuring may be affected.
Data from: The impact of artificial light at night on nocturnal insects: a review and synthesis
In recent decades, advances in lighting technology have precipitated exponential increases in night sky brightness worldwide, raising concerns in the scientific community about the impact of artificial light at night (ALAN) on crepuscular and nocturnal biodiversity. Long-term records show that insect abundance has declined significantly over this time, with worrying implications for terrestrial ecosystems. The majority of investigations into the vulnerability of nocturnal insects to artificial light have focused on the flight-to-light behavior exhibited by select insect families. However, ALAN can affect insects in other ways as well. This review proposes five categories of ALAN impact on nocturnal insects, highlighting past research and identifying key knowledge gaps. We conclude with a summary of relevant literature on bioluminescent fireflies, which emphasizes the unique vulnerability of terrestrial light-based communication systems to artificial illumination. Comprehensive understanding of the ecological impacts of ALAN on diverse nocturnal insect taxa will enable researchers to seek out methods whereby fireflies, moths, and other essential members of the nocturnal ecosystem can coexist with humans on an increasingly urbanized planet.
Supplementary material 7 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Observation critical appraisal
Supplementary material 3 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Citation screening
Supplementary material 6 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Unobtainable articles at full-text screening
Supplementary material 9 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Additional bibliometric results and narrative synthesis
Supplementary material 4 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Citations excluded at full-text screening
Supplementary material 2 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Test list and comprehensiveness
Supplementary material 1 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
ROSES form
Supplementary material 5 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Citations with irretrievable abstracts
Supplementary material 8 from: Lafitte A, Sordello R, Legrand M, Nicolas V, Obein G, Reyjol Y (2023) Does a flashing artificial light have more or conversely less impacts on animals than a continuous one? A systematic review. Nature Conservation 54: 149-177. https://doi.org/10.3897/natureconservation.54.102614
Systematic review observation database
Fig. 1 in Artificial Light At Night As A New Threat For Nature Conservation In Ukraine
Fig. 1. National Nature Parks, Biosphere and Nature Reserves of the Carpathian Mountains, the Forest and the Forest-Steppe zones within Ukraine.
Figure 3 from: Simões TN, Candido da Silva A, de Melo Moura CC (2017) Influence of artificial lights on the orientation of hatchlings of Eretmochelys imbricata in Pernambuco, Brazil. Zoologia 34: 1-6. https://doi.org/10.3897/zoologia.34.e13727
Figure 3 - Multidimensional scaling (MDS) showing the existence of differences between the degree of orientation of hatchlings in relation to the ocean in illuminated and non-illuminated areas; formation of distinct groups (stress = 0.02) in samples collected in Merepe Beach, coast of Ipojuca, Pernambuco Brazil.
Figures 1-2 from: Simões TN, Candido da Silva A, de Melo Moura CC (2017) Influence of artificial lights on the orientation of hatchlings of Eretmochelys imbricata in Pernambuco, Brazil. Zoologia 34: 1-6. https://doi.org/10.3897/zoologia.34.e13727
Figures 1-2 - Trajectory deviations of hatchlings of the species Eretmochelys imbricata in (1) illuminated nests and (2) non-illuminated made in Merepe Beach, coast of Ipojuca, Pernambuco, Brazil.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.