2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/25/2021 | 2:00 PM - 3:30 PM | Assessing drought effects on consumer-mediated ecosystem processes using experimental wetlands. | Virtual Platform
Assessing drought effects on consumer-mediated ecosystem processes using experimental wetlands.
We used leaf packs to assess the effects of climate change on decomposition rates and macroinvertebrate communities. We deployed replicate packs into 9 experimental ponds at the Bo Ginn National Fish Hatchery in Jenkins County, GA. Ponds were used to simulate predicted climate change scenarios (e.g., extended drought periods). Leaf packs were deployed in temporarily flooded and permanently flooded wetlands then collected in ~30, 60, 90-day intervals. We predicted that: (1) permanent wetlands would provide stable and favorable conditions for macroinvertebrate communities, thus support greater diversity; (2) differences in macroinvertebrate community diversity, as well as varying abiotic conditions would result in faster decomposition rates in permanent wetlands; (3) temporary wetlands would be less diverse than permanent wetlands, as they would be exposed to harsher conditions (e.g., higher temperatures, lower DO, and reduced habitat). Leaf decomposition rates were faster in permanent wetlands (k = -0.0085), than in dry environments (k = -0.0054) or temporary wetlands (k = -0.0062). Macroinvertebrate communities differed in abundance, biomass, and overall structure with temporary wetlands initially lagging permanent wetlands. Our study shows the responses of consumer communities and associated ecosystem services to predicted climate change scenarios.
- Organic matter
- Nutrient cycling
- Ecosystem functioning
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Presenters/Authors
Victoria Baglin
(), Georgia Southern University, vb04987@georgiasouthern.edu;
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Isaiah Leach
(), Georgia Southern University, il00333@georgiasouthern.edu;
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Montana Carter
(), Georgia Southern University, mc09271@georgiasouthern.edu;
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Eli Miller
(), Georgia Southern University, em04535@georgiasouthern.edu;
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Loni Keller
(), Georgia Southern University, lk02287@georgiasouthern.edu;
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Angela Shaffer
(), Georgia Southern University, as17251@georgiasouthern.edu;
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Checo Colon-Gaud
(), Georgia Southern University, jccolongaud@georgiasouthern.edu;
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