2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/27/2021 | 2:00 PM - 3:30 PM | MACROINVERTEBRATE RESPONSES TO HYDROLOGICAL VARIATION IN EXPERIMENTAL WETLANDS. | Virtual Platform
MACROINVERTEBRATE RESPONSES TO HYDROLOGICAL VARIATION IN EXPERIMENTAL WETLANDS.
Predicted increases in the frequency of intense storms and periods of severe drought due to climate change represent a threat to wetland macroinvertebrate communities through alterations to the hydrological regime. We used experimental ponds to assess the effects of water permanence (i.e., duration of flooding) on the communities of aquatic macroinvertebrates. We predict that permanent ponds will harbor higher diversity of longer-lived taxa whereas temporary ones will favor colonization by quick turnover, short-lived taxa and support lower consumer diversity. Results show differences in dominant taxa as well as in species diversity and functional feeding groups between the two treatment groups. Permanent ponds show a homogeneous and stable community of longer-lived taxa dominated by collector-gatherers and predators compared to a more variable community of shorter-lived taxa mostly composed of collector-gatherers and filterers found in temporary ones. It seems like this variability is due to a lack of time for the competing colonizers to establish dominance over others as the water cover fluctuates between desiccation and inundation along a shorter time scale, limiting the availability of suitable habitats.
- Climate change
- Energy flows
- Climate variability
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Presenters/Authors
Sergio Andres Sabat-Bonilla
(), Georgia Southern University, Biology Department, Statesboro, GA, ss35863@georgiasouthern.edu;
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Checo Colón-Gaud
(), Georgia Southern University, jccolongaud@georgiasouthern.edu;
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