A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements

De Souza, Gregory F.; Swann, George E.A.; Sutton, Jill N.; André, Luc; Cardinal, Damien; Conley, Daniel J.; de Souza, Gregory F.; Dean, Jonathan; Dodd, Justin; Ehlert, Claudia; Ellwood, Michael J.; Frings, Patrick J.; Grasse, Patricia; Hendry, Katharine; Leng, Melanie J.; Michalopoulos, Panagiotis; Panizzo, Virginia N.

doi:10.3389/feart.2017.00112

A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements

De Souza, Gregory F.; Swann, George E.A.; Sutton, Jill N.; André, Luc; Cardinal, Damien; Conley, Daniel J.; de Souza, Gregory F.; Dean, Jonathan; Dodd, Justin; Ehlert, Claudia; Ellwood, Michael J.; Frings, Patrick J.; Grasse, Patricia; Hendry, Katharine; Leng, Melanie J.; Michalopoulos, Panagiotis; Panizzo, Virginia N.

Authors

Gregory F. De Souza

George E.A. Swann

Jill N. Sutton

Luc André

Damien Cardinal

Daniel J. Conley

Gregory F. de Souza

Dr Jonathan Dean J.Dean2@hull.ac.uk
Lecturer in Quaternary Science, Director of Education, Co-Deputy Head of School

Justin Dodd

Claudia Ehlert

Michael J. Ellwood

Patrick J. Frings

Patricia Grasse

Katharine Hendry

Melanie J. Leng

Panagiotis Michalopoulos

Virginia N. Panizzo

Abstract

© 2018 Sutton, André, Cardinal, Conley, de Souza, Dean, Dodd, Ehlert, Ellwood, Frings, Grasse, Hendry, Leng, Michalopoulos, Panizzo and Swann. Silicon (Si) is the second most abundant element in the Earth’s crust and is an important nutrient in the ocean. The global Si cycle plays a critical role in regulating primary productivity and carbon cycling on the continents and in the oceans. Development of the analytical tools used to study the sources, sinks, and fluxes of the global Si cycle (e.g., elemental and stable isotope ratio data for Ge, Si, Zn, etc.) have recently led to major advances in our understanding of the mechanisms and processes that constrain the cycling of Si in the modern environment and in the past. Here, we provide background on the geochemical tools that are available for studying the Si cycle and highlight our current understanding of the marine, freshwater and terrestrial systems. We place emphasis on the geochemistry (e.g., Al/Si, Ge/Si, Zn/Si, δ 13 C, δ 15 N, δ 18 O, δ 30 Si) of dissolved and biogenic Si, present case studies, such as the Silicic Acid Leakage Hypothesis, and discuss challenges associated with the development of these environmental proxies for the global Si cycle. We also discuss how each system within the global Si cycle might change over time (i.e., sources, sinks, and processes) and the potential technical and conceptual limitations that need to be considered for future studies.

Citation

De Souza, G. F., Swann, G. E., Sutton, J. N., André, L., Cardinal, D., Conley, D. J., de Souza, G. F., Dean, J., Dodd, J., Ehlert, C., Ellwood, M. J., Frings, P. J., Grasse, P., Hendry, K., Leng, M. J., Michalopoulos, P., & Panizzo, V. N. (2018). A review of the stable isotope bio-geochemistry of the global silicon cycle and its associated trace elements. Frontiers in Earth Science, 5, Article 112. https://doi.org/10.3389/feart.2017.00112

Journal Article Type	Review
Acceptance Date	Dec 21, 2017
Online Publication Date	Jan 30, 2018
Publication Date	Jan 30, 2018
Deposit Date	Jan 30, 2018
Publicly Available Date	Jan 31, 2018
Journal	Frontiers in Earth Science
Print ISSN	2296-6463
Publisher	Frontiers Media
Peer Reviewed	Peer Reviewed
Volume	5
Article Number	112
DOI	https://doi.org/10.3389/feart.2017.00112
Keywords	C – N – O - Si isotopes; Biogenic silica; Element/Si ratios; Biogeochemical cycles; Silicon
Public URL	https://hull-repository.worktribe.com/output/564204
Publisher URL	https://www.frontiersin.org/articles/10.3389/feart.2017.00112/full
Contract Date	Jan 30, 2018

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Copyright Statement
© 2018 Sutton, André, Cardinal, Conley, de Souza, Dean, Dodd, Ehlert, Ellwood, Frings, Grasse, Hendry, Leng, Michalopoulos, Panizzo and Swann. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.