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Annals of Botany 87: 425-434, 2001
© 2001 Annals of Botany Company

Biogenic Silica Production in Selected Alpine Plant Species and Plant Communities

A. L. Carnelli+, M. Madella and J.-P. Theurillat

Institut F. A. Forel, Université de Genève, 10 route de Suisse, CH-1290, Versoix, Switzerland The Cambridge Phytolith Project, The McDonald Institute for Archeological Research, University of Cambridge, Downing Street, Cambridge, CB2 3ER, UK Centre Alpien de Phytogéographie, Fondation J.-M. Aubert, CH-1938 Champex and Conservatoire et Jardin botaniques de la Ville de Genève, 1 ch. de l'Impératrice, CH-1292, Chambésy, Switzerland

Received: 7 August 2000 ; Returned for revision: 26 September 2000 . Accepted: 24 November 2000

The biogenic silica extracted from samples of 28 alpine plant species belonging to 23 genera and nine families collected in the Swiss Alps (Valais) accounted for between 0.01 and 5.9% of the dry biomass of leaves and wood. Silica content, and plant contribution to the soil biogenic silica pool, varied widely among taxa. Plant net productivity and biogenic silica production from this study and from the literature have been used to predict the input made by different subalpine and alpine plant communities to soil-borne phytolith assemblages, and their contribution to the silicon biocycle. Copyright 2001 Annals of Botany Company

Silicon, productivity, phytoliths, subalpine, alpine, grasslands, heaths, forests, Gramineae, Cyperaceae, Ericaceae, Coniferae


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