2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/26/2021 | 8:30 AM - 10:30 AM | WHY STREAM RESTORATION SHOULD BE LAND-USE SPECIFIC | Virtual Platform
WHY STREAM RESTORATION SHOULD BE LAND-USE SPECIFIC
In degraded stream ecosystems, restoration projects that take land-use into account may better tackle the stressors involved and consequently also better identify the appropriate restoration measures. Therefore, we aimed to design a land-use oriented framework to identify the major pathways from the stress caused by four anthropogenic land-use types to biotic responses in streams. To this end our framework describes the effects of surrounding land-use on stream macroinvertebrate communities considering: land-use pressure, stress, disturbance of ecological key parameters and abiotic and biotic responses. The framework applied per land-use type revealed that terrestrial input from forest is CPOM-dominated (wood and leaves) positively affecting oxygen concentration and food and habitat quality for EPT-taxa; in grasslands, nutrient-rich sediment increased macrophytes densities resulting in high quality food and structural habitat for many species; streams in arable-cropland were fine sediment-dominated, resulting in poor oxygen and habitat conditions for macroinvertebrates; in streams receiving WWTP-effluent, high concentrations of dissolved nutrients resulted in poor oxygen conditions, benefiting low-oxygen-tolerant species by food availability. It is concluded that land-use oriented restoration projects may pave the way to recover degraded streams.
- Stream
- Land use
- Landscape
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Presenters/Authors
Paula dos Reis Oliveira
(), University of Vila Velha, reolivpaula@gmail.com;
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Michiel Kraak
(), Institute of Biodiversity and Ecosystem Dynamics, M.H.S.Kraak@uva.nl;
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Harm Van der Geest
(), University of Amsterdam, H.G.vandergeest@uva.nl;
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Piet F.M. Verdonschot
(), University of Amsterdam / Wageningen Environmental Research , piet.verdonschot@wur.nl;
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