2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 9:30 AM - 9:45 AM | THE EFFECTS OF ECOSYSTEM DISTURBANCE REGIMES ON COMMUNITY AND LANDSCAPE BIODIVERSITY IN SOUTHEASTERN MASSACHUSETTS HEADWATER STREAMS | 410 B
THE EFFECTS OF ECOSYSTEM DISTURBANCE REGIMES ON COMMUNITY AND LANDSCAPE BIODIVERSITY IN SOUTHEASTERN MASSACHUSETTS HEADWATER STREAMS
Streams are dynamic systems shaped by geographic location, hydrology, riparian vegetation, and in-stream habitat. Furthermore, ecosystem disturbance plays a major role in structuring stream communities and ecosystem processes. Disturbances include flooding, drought, and fire events as well as anthropogenic disturbances such as land use changes, damming, and pollution. Agricultural use constitutes a press disturbance regime, homogenizing the surrounding landscape and simplifying in-stream habitat, leaving legacy effects after farming ceases. Active restoration is intended to ameliorate these effects by reintroducing variation, with the goal of shifting the ecosystem into a more diverse and natural state, thereby acting as a pulse disturbance. In our study, we used a Before-After-Control-Impact (BACI) design to investigate the effects of disturbance regimes on structural, compositional, and functional attributes of macroinvertebrate and habitat/ecosystem biodiversity in a least-impacted stream system, an active flow-through cranberry bog system, and a restored flow-through cranberry bog system in Southeastern Massachusetts from 2014-2017. Overall, we expected a compositional shift in the restored treatment away from the active cranberry bog and towards the least disturbed system, however, the restored treatment is likely to achieve an alternative stable state, at least in the immediate future.
- Disturbance
- Restoration
- Ecosystem
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Presenters/Authors
Sean McCanty
(), University of Massachusetts Boston, seanmccanty@gmail.com;
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Alan Christian
(), University of Massachusetts Boston, alan.christian@umb.edu;
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