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The fractionation of phosphorus in UK chalk stream surface waters and its relevance to the regulation and management of water quality

The fractionation of phosphorus in UK chalk stream surface waters and its relevance to the regulation and management of water quality
The fractionation of phosphorus in UK chalk stream surface waters and its relevance to the regulation and management of water quality
The regulatory management of river water quality requires measurements of phosphorus that are operationally viable and meaningful in terms of insight into its effects. This need is a particular concern in globally rare and ecologically sensitive chalk streams. P data pertaining to rivers are commonly limited to soluble reactive P; other fractions of P may be of concern but are not routinely monitored. This study seeks to establish the nature and extent of non-regulated forms of P in UK chalk streams. Whilst soluble reactive P in two southern English chalk streams was found to comprise the majority of reactive P in surface waters in the majority of samples, 15-20% of the total reactive P was within other size fractions greater than 0.22 μm. The contribution of reactive P to the total P was highly variable. We conclude that, with some adjustments, the established method of regulatory monitoring of P in UK rivers is viable and valuable. In cases where the levels of reactive P are not consistent with ecological status and/or expected outcomes of programmes of measures, we recommend that targeted analysis of non-regulated forms of P is undertaken as a means to guide and focus management interventions.
Chalk streams, Fractionation, Management, Phosphorus, Regulation
0301-4797
Shaw, Peter
935dfebf-9fb6-483c-86da-a21dba8c1989
Leung, K. C.
bacde94f-5aa2-4943-acce-d44b61bf1e21
Clarke, Derek
9746f367-1df2-4e0e-8d71-5ecfc9ddd000
Shaw, Peter
935dfebf-9fb6-483c-86da-a21dba8c1989
Leung, K. C.
bacde94f-5aa2-4943-acce-d44b61bf1e21
Clarke, Derek
9746f367-1df2-4e0e-8d71-5ecfc9ddd000

Shaw, Peter, Leung, K. C. and Clarke, Derek (2021) The fractionation of phosphorus in UK chalk stream surface waters and its relevance to the regulation and management of water quality. Journal of Environmental Management, 289, [112555]. (doi:10.1016/j.jenvman.2021.112555).

Record type: Article

Abstract

The regulatory management of river water quality requires measurements of phosphorus that are operationally viable and meaningful in terms of insight into its effects. This need is a particular concern in globally rare and ecologically sensitive chalk streams. P data pertaining to rivers are commonly limited to soluble reactive P; other fractions of P may be of concern but are not routinely monitored. This study seeks to establish the nature and extent of non-regulated forms of P in UK chalk streams. Whilst soluble reactive P in two southern English chalk streams was found to comprise the majority of reactive P in surface waters in the majority of samples, 15-20% of the total reactive P was within other size fractions greater than 0.22 μm. The contribution of reactive P to the total P was highly variable. We conclude that, with some adjustments, the established method of regulatory monitoring of P in UK rivers is viable and valuable. In cases where the levels of reactive P are not consistent with ecological status and/or expected outcomes of programmes of measures, we recommend that targeted analysis of non-regulated forms of P is undertaken as a means to guide and focus management interventions.

Text
Shaw et al April 2021 - Accepted Manuscript
Restricted to Repository staff only until 10 April 2023.
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Accepted/In Press date: 3 April 2021
Published date: 10 April 2021
Additional Information: Funding Information: The authors gratefully acknowledge the financial support of this study by the Vitacress Conservation Trust . Publisher Copyright: © 2021 Elsevier Ltd Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords: Chalk streams, Fractionation, Management, Phosphorus, Regulation

Identifiers

Local EPrints ID: 450199
URI: http://eprints.soton.ac.uk/id/eprint/450199
ISSN: 0301-4797
PURE UUID: 7faae9e3-e812-4d84-a3f2-8897a3a7682c
ORCID for Peter Shaw: ORCID iD orcid.org/0000-0003-0925-5010
ORCID for Derek Clarke: ORCID iD orcid.org/0000-0002-5433-5258

Catalogue record

Date deposited: 15 Jul 2021 16:40
Last modified: 16 Jul 2021 01:36

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Contributors

Author: Peter Shaw ORCID iD
Author: K. C. Leung
Author: Derek Clarke ORCID iD

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