Selenium cycling through agricultural grasslands in the UK:budgeting the role of the atmosphere

Haygarth, P. M. and Jones, K. C. and Harrison, A. F. (1991) Selenium cycling through agricultural grasslands in the UK:budgeting the role of the atmosphere. Science of the Total Environment, The, 103 (1). pp. 89-111. ISSN 0048-9697

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Abstract

Two idealised Se budget scenarios have been generated to assess the role of atmospheric cycling on the Se status of UK agricultural grasslands. Based on a thorough literature review, the budgets demonstrate that varying the factors for losses by volatilisation from plants and soils or inputs by deposition may significantly affect the net balance of a grassland. The contribution of wet, dry, vapour and particulate deposition inputs to the soil-herbage system are assessed and are thought to be dominated by a soluble form in wet deposition. The total input is calculated to be typically in the range 0.2-0.7 mg m-2 year-1. Volatile losses from the soil are difficult to derive accurately, but are estimated to range between 0.1 and 10 mg m-2 year-1. The budget suggests there is a net input of Se to herbage from the atmosphere, even in remote/rural locations, where inputs are generally low. The implications for the availability of Se to plants and grazing livestock are briefly considered.

Item Type:
Journal Article
Journal or Publication Title:
Science of the Total Environment, The
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2310
Subjects:
ID Code:
137821
Deposited By:
Deposited On:
15 Oct 2019 15:35
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 12:18