Publication
Title
Agricultural silica harvest : have humans created a new loop in the global silica cycle?
Author
Abstract
Silica (Si) is of great concern to agronomists because it has a beneficial effect on plant resistance to various stresses, enabling yield optimization in economically important crop species. Yet biogenic silica (BSi) cycling in soils controls a large part of the Si export fluxes to rivers and oceans. Despite the importance of agricultural-harvest-related Si removal, previous studies have not addressed this topic thoroughly. By performing a detailed quantification of agricultural Si export in Western Europe's Scheldt River basin, we show that harvest not only disrupts BSi cycling but also introduces an agricultural Si pathway, with major export Si fluxes as compared with BSi production in climax forest communities and grasslands. Harvesting substantially changes terrestrial Si cycling because reconstitution of BSi to soils in litter fall is prevented. The agricultural Si loop clearly constitutes an important flow of BSi out of terrestrial ecosystems one that is currently unrecognized in global biogeochemical Si cycling.
Language
English
Source (journal)
Frontiers in ecology and the environment / Ecological Society of America [Washington, D.C.] - Silver Spring
Publication
Silver Spring : ESA, 2012
ISSN
1540-9295
Volume/pages
10:5(2012), p. 243-248
ISI
000305170600015
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
[E?say:metaLocaldata.cgzprojectinf]
Land Use Changes and Si Transport through the Scheldt River Basin. (LUSi)
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 04.06.2012
Last edited 14.09.2017
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