2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2021 | 2:00 PM - 3:30 PM | IMPACTS OF ARTIFICIAL LIGHT AT NIGHT ON RIPARIAN MAMMAL COMMUNITIES | Virtual Platform
IMPACTS OF ARTIFICIAL LIGHT AT NIGHT ON RIPARIAN MAMMAL COMMUNITIES
Artificial light at night (ALAN) is a growing environmental stressor with documented ecological effects, especially at the individual and population levels. However, relatively few studies have addressed how ALAN impacts communities and ecosystems. Here, we investigate the potential effects of ALAN on mammal communities of riparian zones in the Columbus, Ohio Metropolitan Area. Our primary objectives are to quantify differences between lit and unlit reaches in: (1) mammal community composition and habitat use, and (2) the energetic reliance on terrestrially- versus aquatically-derived nutritional subsidies by small mammals. Although preliminary data show no differences in small species richness or mean mass of white-footed mice (Peromyscus leucopus) between lit and unlit sites, there is initial evidence of a trend of greater abundance of small mammals at lit sites. Moving forward, we anticipate that mammal communities will be characterized by a higher relative abundance of predators at lit ALAN sites and a reduced reliance on aquatically-derived nutritional subsidies. Our results will contribute to targeting lighting thresholds necessary to minimize disturbance to riparian ecosystems and inform urban and roadway-lighting management schemes.
- Urban streams
- Biological interactions
- Food webs
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Presenters/Authors
Michael Gilboy
(), The Ohio State University, gilboy.11@buckeyemail.osu.edu;
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