Substantial uptake of atmospheric and groundwater nitrogen by dune slacks under different water table regimes

Rhymes, Jennifer; Wallace, Hilary; Tang, Sim; Jones, Timothy G. J.; Fenner, Nathalie; Jones, Laurence

doi:10.1007/s11852-018-0595-z

J Coast Conserv

2018

DOI: 10.1007/s11852-018-0595-z

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Substantial uptake of atmospheric and groundwater nitrogen by dune slacks under different water table regimes

Jennifer Rhymes

Hilary Wallace²,

Sim Tang

et al.

Abstract: There may be differences between this version and the publisher's version. You are advised to consult the publisher's version if you wish to cite from this article.

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2023

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Source apportionment of nitrogen pressures at a Chalk-fed groundwater-dependent wetland

Whiteman

Farr

Haslam

et al. 2023

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In Groundwater Dependent Terrestrial Ecosystems (GWDTEs), atmospheric nitrogen (N) inputs have often been studied in isolation from terrestrial groundwater and surface water inputs. We describe for the first time the development and application of a combined atmospheric and terrestrial nitrogen source apportionment methodology, able to identify contributing catchment and nitrogen loadings to GWDTEs. We combined all N inputs using a site-specific conceptual model supported by 12 months monitoring for a Chalk-fed GWDTE at Newbald Becksies, East Yorkshire. We discuss implications for effective catchment management, wetland protection and development of a source apportionment methodology. Potential sources of nitrate include: atmospheric deposition, mineralisation, leaching from agricultural soils, manure heaps, septic tanks, sewer and mains water leakage. Atmospheric deposition was calculated from measurements of ammonia and nitrogen dioxide concentrations together with rainfall inputs of ammonium and nitrate. Quantification of agricultural sources used the FarmScoper modelling tool to estimate nitrate leaching in the groundwater catchment. Comparison between modelled nitrate concentrations in leachate (15–17 mg/l N) and observed groundwater nitrate concentrations (12.3–19.8 mg/l N) are good. The majority of nitrate is leached from arable land. FarmScoper allows mitigation scenarios to be tested, supporting measures to reduce nitrate within a groundwater catchment.

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Source apportionment of nitrogen pressures at a Chalk-fed groundwater-dependent wetland

Whiteman

Farr

Haslam

et al. 2023

View full text Add to dashboard Cite

show abstract

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Substantial uptake of atmospheric and groundwater nitrogen by dune slacks under different water table regimes

Abstract: There may be differences between this version and the publisher's version. You are advised to consult the publisher's version if you wish to cite from this article.

Cited by 1 publication

References 21 publications

Source apportionment of nitrogen pressures at a Chalk-fed groundwater-dependent wetland

Source apportionment of nitrogen pressures at a Chalk-fed groundwater-dependent wetland

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