Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/34290
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Type: Journal article
Title: Phosphorus transfer in surface runoff from intensive pasture systems at various scales: a review
Author: Dougherty, W.
Fleming, N.
Cox, J.
Chittleborough, D.
Citation: Journal of Environmental Quality, 2004; 33(6):1973-1988
Publisher: Amer Soc Agronomy
Issue Date: 2004
ISSN: 0047-2425
1537-2537
Statement of
Responsibility: 
Warwick J. Dougherty, Nigel K. Fleming, Jim W. Cox, and David J. Chittleborough
Abstract: Phosphorus transfer in runoff from intensive pasture systems has been extensively researched at a range of scales. However, integration of data from the range of scales has been limited. This paper presents a conceptual model of P transfer that incorporates landscape effects and reviews the research relating to P transfer at a range of scales in light of this model. The contribution of inorganic P sources to P transfer is relatively well understood, but the contribution of organic P to P transfer is still relatively poorly defined. Phosphorus transfer has been studied at laboratory, profile, plot, field, and watershed scales. The majority of research investigating the processes of P transfer (as distinct from merely quantifying P transfer) has been undertaken at the plot scale. However, there is a growing need to integrate data gathered at a range of scales so that more effective strategies to reduce P transfer can be identified. This has been hindered by the lack of a clear conceptual framework to describe differences in the processes of P transfer at the various scales. The interaction of hydrological (transport) factors with P source factors, and their relationship to scale, require further examination. Runoff-generating areas are highly variable, both temporally and spatially. Improvement in the understanding and identification of these areas will contribute to increased effectiveness of strategies aimed at reducing P transfers in runoff. A thorough consideration of scale effects using the conceptual model of P transfer outlined in this paper will facilitate the development of improved strategies for reducing P losses in runoff.
Keywords: Animals; Animals, Domestic; Plants, Edible; Phosphorus; Polymethyl Methacrylate; Water Pollutants; Water Movements; Water Pollution; Models, Theoretical; Animal Husbandry
Description: © ASA, CSSA, SSSA
RMID: RQF0000082
DOI: 10.2134/jeq2004.1973
Published version: http://jeq.scijournals.org/cgi/content/abstract/33/6/1973
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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