2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/23/2019 | 12:00 PM - 12:15 PM | RIPARIAN EFFECTS ON ODONATE ASSEMBLAGES IN OZARK SPRING STREAMS | 150 DEF
RIPARIAN EFFECTS ON ODONATE ASSEMBLAGES IN OZARK SPRING STREAMS
Odonata are often characterized as insensitive to instream water quality but have been shown to respond to structure and composition of aquatic and riparian flora. We are interested in how odonate assemblages respond to riparian structure and whether odonate surveys will be an effective way to characterize human impact on natural riparian zones. We surveyed odonates in twelve Ozark spring streams with variable riparian degradation during three field seasons to account for phenological differences. We collected nymphs, exuviae and breeding adults to justify species residency (using springs to complete a life cycle) versus temporary occupancy (for example scouting potential breeding sites or using springs as feeding grounds). Data analysis is ongoing, including ordination approaches and occupancy modeling on a total of 18 resident species, and preliminary results using non-metric multidimensional scaling suggest odonate assemblages are significantly correlated with riparian structure. Each spring has a unique assemblage structure, including strong associations with either degraded or natural riparian zones. Only one species (Calopteryx maculata) is present across the full habitat gradient. Residency of sensitive species like Cordulegaster obliqua which occurred only in natural riparian sites, should inform management decisions concerning Ozark springs.
- Bioindicators
- Riparian
- Invertebrate
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Presenters/Authors
Cameron Cheri
(), Missouri State University, cameron.r.cheri@gmail.com;
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Debra Finn
(), Missouri State University, dfinn@missouristate.edu;
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