Light pollution

Artificial light at night, that is mainly generated by urban areas and roads. Light is scattered and reflected back to the ground far away from urban centers thus effectively exposing large areas. By modifying the photoperiod, this phenomenon alter physiology, behaviour and activity, and interactions between organisms. Owing to its multifarious effect, artificial light at night is now recognized has a global potential hazard for human health, wildlife, and ecosystems. However, we still largely lack biological data to assess the effects in natural populations and spatial model of theses effects. This project investigate these issues and focuses on amphibians as model organisms by combinining in situ measurements, controlled experiments in the lab, and GIS modelling.



Related publications

  • Touzot M, Lengagne T, Secondi J, Desouhant E, Théry M, Dumet A, Duchamp C, Mondy N. 2020. Artificial light at night alters the sexual behaviour and fertilisation success of the common toad. Environmental Pollution 253. 10.1016/j.envpol.2019.113883.
  • Secondi J., Davranche A, Mondy N, Théry M, Lengagne T. 2020. Assessing the effects of artificial light at night on biodiversity across latitude – current knowledge gaps. Global Ecology and Biogeography. DOI: 10.1111/geb.13037.
  • Touzot M., Teulier L., Lengagne T., Secondi J., Théry M., Libourel P-A., Guillard L., Mondy N. 2019. Artificial light at night disturbs the activity and energy allocation of common toad during the breeding period. Conservation Physiology 7: coz002.
  • Secondi J., Dupont V., Davranche A., Mondy N., Lengagne T., Théry M. 2017. Variability of surface and underwater nocturnal spectral irradiance with the presence of clouds in urban and peri-urban wetlands. PLoS ONE 12: e0186808.