Mapping behaviorally relevant light pollution levels to improve urban habitat planning

Abstract Artificial nighttime lights have important behavioral and ecological effects on wildlife. Combining laboratory and field techniques, we identified behaviorally relevant levels of nighttime light and mapped the extent of these light levels across the city of Chicago. We began by applying a G...

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Autores principales:	Aaron E. Schirmer, Caleb Gallemore, Ting Liu, Seth Magle, Elisabeth DiNello, Humerah Ahmed, Thomas Gilday
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b0b602159b6a48debcaca5522470b79a
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spelling	oai:doaj.org-article:b0b602159b6a48debcaca5522470b79a2021-12-02T15:09:17ZMapping behaviorally relevant light pollution levels to improve urban habitat planning10.1038/s41598-019-48118-z2045-2322https://doaj.org/article/b0b602159b6a48debcaca5522470b79a2019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-48118-zhttps://doaj.org/toc/2045-2322Abstract Artificial nighttime lights have important behavioral and ecological effects on wildlife. Combining laboratory and field techniques, we identified behaviorally relevant levels of nighttime light and mapped the extent of these light levels across the city of Chicago. We began by applying a Gaussian finite mixture model to 998 sampled illumination levels around Chicago to identify clusters of light levels. A simplified sample of these levels was replicated in the laboratory to identify light levels at which C57BL/6J mice exhibited altered circadian activity patterns. We then used camera trap and high-altitude photographic data to compare our field and laboratory observations, finding activity pattern changes in the field consistent with laboratory observations. Using these results, we mapped areas across Chicago exposed to estimated illumination levels above the value associated with statistically significant behavioral changes. Based on this measure, we found that as much as 36% of the greenspace in the city is in areas illuminated at levels greater than or equal to those at which we observe behavioral differences in the field and in the laboratory. Our findings provide evidence that artificial lighting patterns may influence wildlife behavior at a broad scale throughout urban areas, and should be considered in urban habitat planning.Aaron E. SchirmerCaleb GallemoreTing LiuSeth MagleElisabeth DiNelloHumerah AhmedThomas GildayNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-13 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Aaron E. Schirmer Caleb Gallemore Ting Liu Seth Magle Elisabeth DiNello Humerah Ahmed Thomas Gilday Mapping behaviorally relevant light pollution levels to improve urban habitat planning
description	Abstract Artificial nighttime lights have important behavioral and ecological effects on wildlife. Combining laboratory and field techniques, we identified behaviorally relevant levels of nighttime light and mapped the extent of these light levels across the city of Chicago. We began by applying a Gaussian finite mixture model to 998 sampled illumination levels around Chicago to identify clusters of light levels. A simplified sample of these levels was replicated in the laboratory to identify light levels at which C57BL/6J mice exhibited altered circadian activity patterns. We then used camera trap and high-altitude photographic data to compare our field and laboratory observations, finding activity pattern changes in the field consistent with laboratory observations. Using these results, we mapped areas across Chicago exposed to estimated illumination levels above the value associated with statistically significant behavioral changes. Based on this measure, we found that as much as 36% of the greenspace in the city is in areas illuminated at levels greater than or equal to those at which we observe behavioral differences in the field and in the laboratory. Our findings provide evidence that artificial lighting patterns may influence wildlife behavior at a broad scale throughout urban areas, and should be considered in urban habitat planning.
format	article
author	Aaron E. Schirmer Caleb Gallemore Ting Liu Seth Magle Elisabeth DiNello Humerah Ahmed Thomas Gilday
author_facet	Aaron E. Schirmer Caleb Gallemore Ting Liu Seth Magle Elisabeth DiNello Humerah Ahmed Thomas Gilday
author_sort	Aaron E. Schirmer
title	Mapping behaviorally relevant light pollution levels to improve urban habitat planning
title_short	Mapping behaviorally relevant light pollution levels to improve urban habitat planning
title_full	Mapping behaviorally relevant light pollution levels to improve urban habitat planning
title_fullStr	Mapping behaviorally relevant light pollution levels to improve urban habitat planning
title_full_unstemmed	Mapping behaviorally relevant light pollution levels to improve urban habitat planning
title_sort	mapping behaviorally relevant light pollution levels to improve urban habitat planning
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/b0b602159b6a48debcaca5522470b79a
work_keys_str_mv	AT aaroneschirmer mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning AT calebgallemore mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning AT tingliu mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning AT sethmagle mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning AT elisabethdinello mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning AT humerahahmed mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning AT thomasgilday mappingbehaviorallyrelevantlightpollutionlevelstoimproveurbanhabitatplanning
_version_	1718387833531531264

Mapping behaviorally relevant light pollution levels to improve urban habitat planning

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