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The Contribution of Tephra Constituents During Biogenic Silica Determination: Implications for Soil and Paleoecological Studies : Volume 12, Issue 4 (25/02/2015)

By Clymans, W.

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Book Id: WPLBN0003973593
Format Type: PDF Article :
File Size: Pages 41
Reproduction Date: 2015

Title: The Contribution of Tephra Constituents During Biogenic Silica Determination: Implications for Soil and Paleoecological Studies : Volume 12, Issue 4 (25/02/2015)  
Author: Clymans, W.
Volume: Vol. 12, Issue 4
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: copernicus


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Der Putten, N. V., Barão, L., Björck, S., Clymans, W., Conley, D. J., Wastegård, S.,...Struyf, E. (2015). The Contribution of Tephra Constituents During Biogenic Silica Determination: Implications for Soil and Paleoecological Studies : Volume 12, Issue 4 (25/02/2015). Retrieved from

Description: Department of Geology, Lund University, Sölvegatan 12, 22362 Lund, Sweden. Biogenic silica (BSi) is used as a proxy by soil scientists to identify biological effects on the Si cycle and by paleoecologists to study environmental changes. Alkaline extractions are typically used to measure BSi in both terrestrial and aquatic environments. The dissolution properties of volcanic glass in tephra deposits and their nano-crystalline weathering products are hypothesized to overlap those of BSi, however, data to support this behavior are lacking. The understanding that the Si-bearing fractions that dissolve in alkaline media (SiAlk) do not necessarily correspond to BSi, question the applicability of BSi as a proxy. Here, analysis of 15 samples reported as tephra-containing allows us to reject the hypothesis that tephra constituents produce an identical dissolution signal to that of BSi during alkaline extraction. We found that dissolution of volcanic glass shards is incomplete during alkaline dissolution. Simultaneous measurement of Al and Si used here during alkaline dissolution provides an important parameter to enable us to separate glass shard dissolution from dissolution of BSi and other Si-bearing fractions. The contribution from volcanic glass shard (between 0.2–4 wt.% SiO2), the main constituent of distal tephra, during alkaline dissolution can be substantial depending on the total SiAlk. Hence, soils and lake sediments with low BSi concentrations are highly sensitive to the additional dissolution from tephra constituents and its weathering products. We advise evaluation of the potential for volcanic or other non-biogenic contributions for all types of studies using BSi as an environmental proxy.

The contribution of tephra constituents during biogenic silica determination: implications for soil and paleoecological studies

Adams, J. K. and Finkelstein, S. A.: Watershed-scale reconstruction of middle and late Holocene paleoenvironmental changes on Melville Peninsula, Nunavut, Canada, Quaternary Sci. Rev., 29, 2302–2314, doi:10.1016/j.quascirev.2010.05.033, 2010.; Ampel, L., Wohlfarth, B., Risberg, J., and Veres, D.: Paleolimnological response to millennial and centennial scale climate variability during MIS 3 and 2 as suggested by the diatom record in Les Echets, France, Quaternary Sci. Rev., 27, 1493–1504, doi:10.1016/j.quascirev.2008.04.014, 2008.; Andresen, C. S., Björck, S., Bennike, O., and Bond, G.: Holocene climate changes in southern Greenland: evidence from lake sediments, J. Quaternary Sci., 19, 783–795, doi:10.1002/jqs.886, 2004.; Barão, A., Vandevenne, F., Clymans, W., Frings, P., Ragueneau, O., Meire, P., Conley, D. J., and Struyf, E.: Alkaline-extractable silicon from land to ocean: a challenge for biogenic Silicon determination., Limnol. Oceanogr.-Meth., in press, 2015.; Barão, L., Clymans, W., Vandevenne, F., Meire, P., Conley, D., and Struyf, E.: Pedogenic and biogenic alkalineextracted silicon distributions along a temperate landuse gradient, Eur. J. Soil Sci., 65, 693–705, 2014.; Björck, S., Rittenour, T., Rosén, P., França, Z., Möller, P., Snowball, I., Wastegård, S., Bennike, O., and Kromer, B.: A Holocene lacustrine record in the central North Atlantic: proxies for volcanic activity, short-term NAO mode variability, and long-term precipitation changes, Quaternary Sci. Rev., 25, 9–32, doi:10.1016/j.quascirev.2005.08.008, 2006.; Blockley, S. P. E., Pyne-O'Donnell, S. D. F., Lowe, J. J., Matthews, I. P., Stone, A., Pollard, A. M., Turney, C. S. M., and Molyneux, E. G.: A new and less destructive laboratory procedure for the physical separation of distal glass tephra shards from sediments, Quaternary Sci. Rev., 24, 1952–1960, doi:10.1016/j.quascirev.2004.12.008, 2005.; Churchman, J. and Lowe, D. J.: Alteration, formation, and occurrence of minerals in soils, in:, Handbook of Soil Sciences, vol. 1: Properties and Processes, 2nd edn., edited by: Huang, P. and Li, Y., CRC Press, Boca Raton, FL, 20.1–20.71, 2012.; Clymans, W., Govers, G., Van Wesemael, B., Meire, P., and Struyf, E.: Amorphous silica analysis in terrestrial runoff samples, Geoderma, 167–168, 228–235, 2011a.; Clymans, W., Struyf, E., Govers, G., Vandevenne, F., and Conley, D. J.: Anthropogenic impact on amorphous silica pools in temperate soils, Biogeosciences, 8, 2281–2293, doi:10.5194/bg-8-2281-2011, 2011b.; Clymans, W., Lehtinen, T., Gísladóttir, G., Lair, G., Barão, L., Ragnarsdóttir, K., Struyf, E., and Conley, D.: Si precipitation during weathering in different icelandic andosols, Procedia Earth Planet. Sci., 10, 260–265, 2014.; Conley, D. and Schelske, C.: Biogenic silica, in: Tracking Environmental Change Using Lake Sediments: Biological Methods and Indicators, edited by: Smol, J., Birks, H., and Last, W., Kluwer Academic Press, Dordrecht, the Netherlands, 281–293, 2001.; Conley, D., Schelske, C., and Stoermer, E.: Modification of the biogeochemical cycle of silica with eutrophication, Mar. Ecol.-Prog. Ser., 101, 179–192, 1993.; Cornelis, J. T., Ranger, J., Iserentant, A., and Delvaux, B.: Tree species impact the terrestrial cycle of silicon through various uptakes, Biogeochemistry, 97, 231–245, doi:10.1007/s10533-009-9369-x, 2010.; Cornelis, J.-T., Titeux, H., Ranger, J., and Delvaux, B.: Identification and distribution of the readily soluble silicon pool in a temperate forest soi


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