2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | Catchment-wide ecological system analysis; a tool for integrated stream restoration planning | Virtual Platform
Catchment-wide ecological system analysis; a tool for integrated stream restoration planning
For a long time, stream restoration mainly focused on alleviating single stressors at habitat scale. This might be an important reason why restoration is often less effective. It is a challenge to assess how multiple, interacting stressors over different scales affect macroinvertebrate community composition. We selected a lowland stream catchment, identified a target macroinvertebrate community and all major stressors acting at different scales. We organized the data according to the major environmental components (hydrology, morphology, chemistry) and three spatial scales (catchment, stream valley, instream habitat). For each stressor, we classified the intensity of the adverse effects on the invertebrate community. Next, we calculated the overall stress, in fact the impact of anthropogenic and environmental stressors, on the invertebrate community by cumulating the different stressors and accounting for retention and relative discharges at confluences. Finally, we validated the overall environmental stress with the ecological quality scores derived from independent biological monitoring data on macroinvertebrates. Using this catchment-wide ecological system analysis we were able to identify and localize the most stringent stressors limiting the recovery of the target macroinvertebrate community and to provide informed focus for management decisions on stream restoration.
- Stressor
- Ecosystem
- Stream restoration
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Presenters/Authors
Piet F.M. Verdonschot
(), University of Amsterdam / Wageningen Environmental Research , piet.verdonschot@wur.nl;
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Jip de Vries
(), University of Amsterdam, j.de.vries@uva.nl;
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Gea van der Lee
(), Wageningen Environmental Research, gea.vanderlee@wur.nl;
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Ralf C.M. Verdonschot
(), Wageningen Environmental Research, ralf.verdonschot@wur.nl;
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