2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2018 | 2:15 PM - 2:30 PM | EVALUATION OF EUTROPHICATION MITIGATION MEASURES AT FINE SPATIAL AND TEMPORAL RESOLUTION | 420 B
EVALUATION OF EUTROPHICATION MITIGATION MEASURES AT FINE SPATIAL AND TEMPORAL RESOLUTION
Combating eutrophication is difficult and exposes gaps in the scientific understanding of hydrological and biogeochemical processes in streams. One example of such a knowledge gap is understanding of the hydrological and biogeochemical effects of mitigation measures aimed to reduce eutrophication. To address this gap, we implemented high-frequency monitoring in a Swedish headwater watershed (7.4 km2) subjected to intensive crop production and high phosphorus and sediment losses from clay soils. To reduce the negative effects of agriculture on stream water quality and ecology, a number of mitigation measures have been implemented in the watershed, including: improved drainage, lime filters, buffer zones, a two-stage ditch and a sedimentation pond. The experimental setup includes hydrochemical measurements at the watershed outlet and along the stream network, using optical sensors and wet-chemistry analyzers for continuous determination of phosphorus, nitrogen, carbon and suspended sediments. In this paper, we show how our high-frequency experimental setup helps to evaluate combined and individual effects of mitigation measures and provides a collaborative dialogue between scientists, water authorities and the farmers, all interested in reducing eutrophication at watershed-scale.
- Eutrophication
- Water Quality
- Hydrology
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Presenters/Authors
Magdalena Bieroza
(), Swedish University of Agricultural Sciences, magdalena.bieroza@slu.se;
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