Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/16446
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: The legacy of past manuring practices on soil contamination in remote rural areas
Authors: Davidson, Donald
Wilson, Clare
Meharg, Andrew A
Deacon, Claire
Edwards, Kevin J
Contact Email: c.a.wilson@stir.ac.uk
Keywords: soil contamination
manuring of arable land
black carbornsed particles
soil micromorphology
Issue Date: Jan-2007
Publisher: Elsevier
Citation: Davidson D, Wilson C, Meharg AA, Deacon C & Edwards KJ (2007) The legacy of past manuring practices on soil contamination in remote rural areas, Environment International, 33 (1), pp. 78-83.
Abstract: This paper demonstrates that there can be a legacy of contamination on former arable land in remote rural areas as a result of past manuring practices. In the first part of the study four farms abandoned in the late 19th to mid-20th century were investigated with samples collected from residual material in domestic hearths, the midden heaps, kailyards (walled garden for vegetables), infields (intensively managed arable land) and outfields (less intensively managed land for cropping or grazing). Consistent sequences in concentration values were found for such elements as Pb, Zn, Cu and P in the order hearth > midden > kailyard > infield > outfield. Such patterns can in part be explained in terms of atmospheric deposition on peat and turf which were subsequently burnt in hearths to result in enhanced elemental concentrations. The ash then was deposited in midden heaps and subsequently on kailyards or infields. In the second part, microanalytical results from St. Kilda are discussed. Enhanced loadings of Pb and Zn were found in the old arable land. The highest levels of Zn were found in small fragments of carbonised and humified material and bone fragments; in contrast Pb tended to be more uniformly distributed. Seabird waste was extensively applied to the arable land and some of the Zn may have accumulated in the soil by this pathway. The retention of Zn in bone is likely to have been very minor given the rarity of bone fragments as evident in thin sections (0.3%); this compares with 6.8% for black carbonised particles which are likely to provide the main storage sites for Zn.
Type: Journal Article
URI: http://hdl.handle.net/1893/16446
DOI Link: http://dx.doi.org/10.1016/j.envint.2006.07.001
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Biological and Environmental Sciences
Biological and Environmental Sciences
University of Aberdeen
University of Aberdeen
University of Aberdeen

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