2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | Benthic Invertebrate Community Biomass and Assemblage Response to a Whole-Lake Manipulation | Virtual Platform
Benthic Invertebrate Community Biomass and Assemblage Response to a Whole-Lake Manipulation
As global climate is changing, multiple factors are contributing to changes in primary production. Theory suggests that dissolved organic carbon (DOC) concentrations have a hump-shaped relationship with primary productivity driven by associated increases in nutrient supply and decreases in light availability. These impacts on primary productivity have been shown to be mostly driven by decreases in benthic primary production. This decrease in benthic primary production is likely to impact benthic invertebrate communities through bottom-up effects. Here, we test how increasing DOC concentrations impact benthic invertebrate communities in a whole lake manipulation. In 2011, we began to experimentally increase the DOC concentration in half of Long Lake from 6 to 11 mg C L-1. Throughout this period, we monitored carbon, phosphorus, and nitrogen loads and pelagic food web productivity. Here we explore how the benthic invertebrate community responded to this whole-lake manipulation through assessment of community composition and biomass production. These results will provide expectations for how aquatic ecosystems will respond to an ongoing, continental-scale environmental change, by significantly increasing understanding about the implications of increased carbon loads on benthic invertebrate communities.
- Nutrients
- Carbon cycle
- Monitoring
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Presenters/Authors
Amaryllis Adey
(), The University of Notre Dame, aadey@nd.edu;
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