2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/06/2017 | 2:30 PM - 2:45 PM | RESPONSE OF AQUATIC MACROINVERTEBRATE COMMUNITIES TO DISTURBANCE IN TEMPORARY WOODLAND POOLS | 301B
RESPONSE OF AQUATIC MACROINVERTEBRATE COMMUNITIES TO DISTURBANCE IN TEMPORARY WOODLAND POOLS
Temporary woodland pools are common throughout the Pennyroyal Plain north of Clarksville, Tennessee. We studied the effects of disturbance on aquatic macroinvertebrate community structure in these wetlands. Our objective was to determine correlations, if any, between community structure and landscape. We used canopy density, canopy height, and vegetative buffer as disturbance metrics. Mean maximum water level was also measured as an estimate of hydroperiod. Macroinvertebrates were collected from ten sites using activity traps and substrate sampling. Identified specimens were grouped as active or passive dispersers. Significant associations were indicated between disperser ability and site (X2=2927.626, p=0.0001), which is best explained by variation in maximum water level and vegetative buffer. Mean maximum water level was negatively correlated with the proportion of active dispersers (p=0.0064) and positively correlated with passive dispersers (p=0.0078). Mean vegetative buffer and mean maximum water level were negatively correlated (p=0.0075). These findings suggest that well-buffered sites are more ephemeral, likely due to decreased runoff. More ephemeral study sites were found to have more unique communities. Disturbance impacts temporary woodland pools, including increased permanence and decreased biodiversity.
- C07 Lentic Ecology
- C03 Invertebrates
- C09 Wetland Ecology
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Presenters/Authors
Brandy Schnettler
(), Austin Peay State University, bschnettler@my.apsu.edu;
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Steven W. Hamilton
(), Austin Peay State University, hamiltonsw@apsu.edu;
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Joseph R. Schiller
(), Austin Peay State University, schillerj@apsu.edu;
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