EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021

(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)

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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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