Efficiency of mitigation measures targeting nutrient losses from agricultural drainage systems: A review

Mette Vodder Carstensen; Fatemeh Hashemi; Carl Christian Hoffmann; Dominik Zak; Joachim Audet; Brian Kronvang

doi:10.1007/s13280-020-01345-5

Efficiency of mitigation measures targeting nutrient losses from agricultural drainage systems: A review

Mette Vodder Carstensen, Fatemeh Hashemi, Carl Christian Hoffmann, Dominik Zak, Joachim Audet, Brian Kronvang

Department of Agroecology - Agricultural Systems and Sustainability

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Review › Research › peer-review

70 Citations (Scopus)

53 Downloads (Pure)

Abstract

Diffusive losses of nitrogen and phosphorus from agricultural areas have detrimental effects on freshwater and marine ecosystems. Mitigation measures treating drainage water before it enters streams hold a high potential for reducing nitrogen and phosphorus losses from agricultural areas. To achieve a better understanding of the opportunities and challenges characterising current and new drainage mitigation measures in oceanic and continental climates, we reviewed the nitrate and total phosphorus removal efficiency of: (i) free water surface constructed wetlands, (ii) denitrifying bioreactors, (iii) controlled drainage, (iv) saturated buffer zones and (v) integrated buffer zones. Our data analysis showed that the load of nitrate was substantially reduced by all five drainage mitigation measures, while they mainly acted as sinks of total phosphorus, but occasionally, also as sources. The various factors influencing performance, such as design, runoff characteristics and hydrology, differed in the studies, resulting in large variation in the reported removal efficiencies.

Original language	English
Journal	AMBIO
Volume	49
Issue	11
Pages (from-to)	1820-1837
Number of pages	18
ISSN	1654-7209
DOIs	https://doi.org/10.1007/s13280-020-01345-5
Publication status	Published - 1 Nov 2020

Keywords

Agricultural drainage systems
Catchment management
Meta-analysis
Mitigation measures
Nutrient reduction
Water quality

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Efficiency of mitigation measures targeting nutrient losses from agricultural drainage systems: A review. / Carstensen, Mette Vodder ; Hashemi, Fatemeh ; Hoffmann, Carl Christian et al.
In: AMBIO, Vol. 49, No. 11, 01.11.2020, p. 1820-1837.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Review › Research › peer-review

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T2 - A review

AU - Carstensen, Mette Vodder

AU - Hashemi, Fatemeh

AU - Hoffmann, Carl Christian

AU - Zak, Dominik

AU - Audet, Joachim

AU - Kronvang, Brian

PY - 2020/11/1

Y1 - 2020/11/1

N2 - Diffusive losses of nitrogen and phosphorus from agricultural areas have detrimental effects on freshwater and marine ecosystems. Mitigation measures treating drainage water before it enters streams hold a high potential for reducing nitrogen and phosphorus losses from agricultural areas. To achieve a better understanding of the opportunities and challenges characterising current and new drainage mitigation measures in oceanic and continental climates, we reviewed the nitrate and total phosphorus removal efficiency of: (i) free water surface constructed wetlands, (ii) denitrifying bioreactors, (iii) controlled drainage, (iv) saturated buffer zones and (v) integrated buffer zones. Our data analysis showed that the load of nitrate was substantially reduced by all five drainage mitigation measures, while they mainly acted as sinks of total phosphorus, but occasionally, also as sources. The various factors influencing performance, such as design, runoff characteristics and hydrology, differed in the studies, resulting in large variation in the reported removal efficiencies.

AB - Diffusive losses of nitrogen and phosphorus from agricultural areas have detrimental effects on freshwater and marine ecosystems. Mitigation measures treating drainage water before it enters streams hold a high potential for reducing nitrogen and phosphorus losses from agricultural areas. To achieve a better understanding of the opportunities and challenges characterising current and new drainage mitigation measures in oceanic and continental climates, we reviewed the nitrate and total phosphorus removal efficiency of: (i) free water surface constructed wetlands, (ii) denitrifying bioreactors, (iii) controlled drainage, (iv) saturated buffer zones and (v) integrated buffer zones. Our data analysis showed that the load of nitrate was substantially reduced by all five drainage mitigation measures, while they mainly acted as sinks of total phosphorus, but occasionally, also as sources. The various factors influencing performance, such as design, runoff characteristics and hydrology, differed in the studies, resulting in large variation in the reported removal efficiencies.

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KW - Catchment management

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KW - Nutrient reduction

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Efficiency of mitigation measures targeting nutrient losses from agricultural drainage systems: A review

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Keywords

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