Artificial light at night can modify ecosystem functioning beyond the lit area.

Scientific Reports
Simone GiaviEva Knop

Abstract

Artificial light at night (ALAN) is a relatively new and rapidly increasing global change driver. While evidence on adverse effects of ALAN for biodiversity and ecosystem functioning is increasing, little is known on the spatial extent of its effects. We therefore tested whether ALAN can affect ecosystem functioning in areas adjacent to directly illuminated areas. We exposed two phytometer species to three different treatments of ALAN (sites directly illuminated, sites adjacent to directly illuminated sites, control sites without illumination), and we measured its effect on the reproductive output of both plant species. Furthermore, in one of the two plant species, we quantified pre-dispersal seed predation and the resulting relative reproductive output. Finally, under controlled condition in the laboratory, we assessed flower visitation and oviposition of the main seed predator in relation to light intensity. There was a trend for reduced reproductive output of one of the two plant species on directly illuminated sites, but not of the other. Compared to dark control sites, seed predation was significantly increased on dark sites adjacent to illuminated sites, which resulted in a significantly reduced relative reproductive outp...Continue Reading

References

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Citations

Oct 29, 2020·Scientific Reports·Michiel P BoomMarcel E Visser
Mar 18, 2021·Nature Communications·Simone GiaviEva Knop
Apr 28, 2021·Environmental Pollution·Valeria B Salinas-RamosDanilo Russo
Jul 14, 2021·Current Opinion in Insect Science·Maja Grubisic, Roy Ha van Grunsven
Aug 27, 2021·Science Advances·Douglas H BoyesMichael J O Pocock

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Methods Mentioned

BETA
light treatments
light treatment

Software Mentioned

R glmmTMB
ALAN
Matlab

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