2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/21/2018 | 9:45 AM - 10:00 AM | FINE SEDIMENT IMPACT ON STREAM METABOLISM: A LAND USE EFFECT | 330 A
FINE SEDIMENT IMPACT ON STREAM METABOLISM: A LAND USE EFFECT
Stream metabolism is a key process in flowing water ecosystems that might be affected by the input of fine sediment. In lowland streams, fine sediment accumulation occurs naturally and its presence does not exert/have an impact itself, but its organic matter composition could cause affect in dissolved oxygen regime and stream metabolism. Therefore, we hypothesized that catchment land use defines instream silt signatures which affect the stream ecosystems oxygen regimes and metabolism. To validate our hypothesis we selected five different land uses: forest, extensive grassland, intensive grassland, crop and urban; and the following questions have been raised: 1) How does dissolved oxygen regime and metabolism vary among streams in various land use types?; 2) Is dissolved oxygen regime and metabolism affected by the accumulation of fine sediment in deposition zones?; 3) Is sediment organic matter composition a key environmental variable steering dissolved oxygen in lowland streams? From the outcome, based on both structural and functional approaches, we will analyze the impact of fine sediment on stream metabolism.
- Sediment
- Landuse
- Restoration
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Presenters/Authors
Paula dos Reis Oliveira
(), University of Amsterdam, p.c.dosreisoliveira@uva.nl;
ASHA DISCLOSURE:
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Piet F.M. Verdonschot
(), University of Amsterdam / Wageningen Environmental Research , piet.verdonschot@wur.nl;
ASHA DISCLOSURE:
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