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The impact of agriculture on dissolved nitrogen and phosphorus cycling in temperate ecosystems

Heathwaite, A. Louise (1993) The impact of agriculture on dissolved nitrogen and phosphorus cycling in temperate ecosystems. Chemistry and Ecology, 8 (3). pp. 217-231. ISSN 1029-0370

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Abstract

Although most research has focussed on inorganic nutrient forms of nitrate (NO− 3) and phosphorus (PO3 4) in runoff and receiving waters, nitrogen loss from agricultural land can also occur in organic and ammonium-nitrogen form; phosphorus losses, although often dominated by particulate transport, may occur in soluble organic and inorganic form. Furthermore, fluxes between different species may take place during transport from the land to the stream and as a result of in-stream, in-river or in-lake transformations. Knowledge of the spatial and temporal variation in all nitrogen species and phosphorus fractions in a drainage basin is therefore essential if the wider environmental significance of elevated nutrient concentrations in natural waters are to be assessed. This paper reviews recent work on N and P losses from agricultural land and presents some results from two intensive agricultural catchments: Slapton, Devon and the river Windrush catchment in the Cotswolds.

Item Type: Article
Journal or Publication Title: Chemistry and Ecology
Additional Information: The impact of agriculture on dissolved nitrogen and phosphorus cycling in temperate ecosystems
Uncontrolled Keywords: Particulates ; soluble fractions ; phosphorus ; nitrogen ; organics ; agriculture
Subjects: UNSPECIFIED
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 49796
Deposited By: ep_importer_pure
Deposited On: 19 Sep 2011 12:11
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 19:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/49796

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