2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 11:30 AM - 11:45 AM | ARTIFICIAL NIGHT LIGHTING IMPACTS RESOURCE EXCHANGE ACROSS AN AQUATIC-TERRESTRIAL BOUNDARY | 320
ARTIFICIAL NIGHT LIGHTING IMPACTS RESOURCE EXCHANGE ACROSS AN AQUATIC-TERRESTRIAL BOUNDARY
Artificial night lighting (ANL) has increased concurrently with human habitation along freshwater shorelines, illuminating littoral and riparian areas. Do alterations to the natural light regime alter resource exchange between these highly productive ecosystems? To help answer this question, we installed 20 mesocosms in the littoral zone of Haven Hill Lake (Michigan, USA), manipulated the presence of fish and ANL, and measured a suite of community- and ecosystem-level parameters. We found that ANL increased emergent invertebrate abundance and altered emergent and terrestrial invertebrate community composition, while having few effects on aquatic benthic invertebrate communities and ecosystem processes. ANL also increased the presence of riparian spiders (Tetragnathidae) by 101% and spider biomass by 51%, with both biomass and abundance positively correlated with invertebrate-prey abundance. These results indicate that ANL along shorelines and in littoral zones can impact the transfer of resources across the aquatic-riparian boundary, and the consumers that utilize those resources.
- Invertebrate
- Subsidy
- Predator-prey
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Presenters/Authors
Elizabeth Parkinson
(), Dept. Biological Sciences, Oakland University, emparkinson@oakland.edu;
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Scott Tiegs
(), Dept. of Biological Sciences, Oakland University, tiegs@oakland.edu;
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