DOI: 10.1111/gcb.13792
论文题名: Seasonal associations with urban light pollution for nocturnally migrating bird populations
作者: La Sorte F.A. ; Fink D. ; Buler J.J. ; Farnsworth A. ; Cabrera-Cruz S.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Artificial light
; eBird
; Light pollution
; Neotropical migrants
; Nocturnal migration
; North America
; Seasonal bird migration
; Urbanization
英文摘要: The spatial extent and intensity of artificial light at night (ALAN) has increased worldwide through the growth of urban environments. There is evidence that nocturnally migrating birds are attracted to ALAN, and there is evidence that nocturnally migrating bird populations are more likely to occur in urban areas during migration, especially in the autumn. Here, we test if urban sources of ALAN are responsible, at least in part, for these observed urban associations. We use weekly estimates of diurnal occurrence and relative abundance for 40 nocturnally migrating bird species that breed in forested environments in North America to assess how associations with distance to urban areas and ALAN are defined across the annual cycle. Migratory bird populations presented stronger than expected associations with shorter distances to urban areas during migration, and stronger than expected association with higher levels of ALAN outside and especially within urban areas during migration. These patterns were more pronounced during autumn migration, especially within urban areas. Outside of the two migration periods, migratory bird populations presented stronger than expected associations with longer distances to urban areas, especially during the nonbreeding season, and weaker than expected associations with the highest levels of ALAN outside and especially within urban areas. These findings suggest that ALAN is associated with higher levels of diurnal abundance along the boundaries and within the interior of urban areas during migration, especially in the autumn when juveniles are undertaking their first migration journey. These findings support the conclusion that urban sources of ALAN can broadly effect migratory behavior, emphasizing the need to better understand the implications of ALAN for migratory bird populations. © 2017 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61145
Appears in Collections: 影响、适应和脆弱性
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作者单位: Cornell Laboratory of Ornithology Cornell University Ithaca, NY USA; Department of Entomology and Wildlife Ecology University of Delaware Newark, DE USA
Recommended Citation:
La Sorte F.A.,Fink D.,Buler J.J.,et al. Seasonal associations with urban light pollution for nocturnally migrating bird populations[J]. Global Change Biology,2017-01-01