Does elevated CO2 alter silica uptake in trees?
Abstract
Human activities have greatly altered global carbon (C) and Nitrogen (N) cycling. In fact, atmospheric concentrations of carbon dioxide (CO2) have increased 40% over the last century and the amount of N cycling in the biosphere has more than doubled. In an effort to understand how plants will respond to continued global CO2 fertilization, longterm free-air CO2 enrichment experiments have been conducted at sites around the globe. Here we examine how atmospheric CO2 enrichment and N fertilization affects the uptake of silicon (Si) in the Duke Forest, North Carolina, a stand dominated by Pinus taeda (loblolly pine), and five hardwood species. Specifically, we measured foliar biogenic silica concentrations in five deciduous and one coniferous species across three treatments: CO2 enrichment, N enrichment, and N and CO2 enrichment. We found no consistent trends in foliar Si concentration under elevated CO2, N fertilization, or combined elevated CO2 and N fertilization. However, two-thirds of the tree species studied here have Si foliar concentrations greater than well-known Si accumulators, such as grasses. Based on net primary production values and aboveground Si concentrations in these trees, we calculated forest Si uptake rates under control and elevated CO2 concentrations. Due largely to increased primary production, elevatedmore »
- Authors:
-
- Boston Univ., MA (United States)
- The Ecosystems Center, Woods Hole, MA (United States)
- Publication Date:
- Research Org.:
- Associated Universities, Inc., Washington, DC (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); Sloan Foundation, New York, NY (United States); National Institute for Global Environmental Change (NIGEC), New Orleans, LA (United States); Univ. of Alabama, Birmingham, AL (United States). Southeast Regional Center (SERC)
- OSTI Identifier:
- 1204502
- Grant/Contract Number:
- FG02-97ER25308
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Frontiers in Plant Science
- Additional Journal Information:
- Journal Volume: 5; Journal ID: ISSN 1664-462X
- Publisher:
- Frontiers Research Foundation
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; 59 BASIC BIOLOGICAL SCIENCES; elevated CO2; silicon; forest Si uptake; terrestrial Si pump; active Si accumulation; Si cycling
Citation Formats
Fulweiler, Robinson W., Maguire, Timothy J., Carey, Joanna C., and Finzi, Adrien C. Does elevated CO2 alter silica uptake in trees?. United States: N. p., 2015.
Web. doi:10.3389/fpls.2014.00793.
Fulweiler, Robinson W., Maguire, Timothy J., Carey, Joanna C., & Finzi, Adrien C. Does elevated CO2 alter silica uptake in trees?. United States. https://doi.org/10.3389/fpls.2014.00793
Fulweiler, Robinson W., Maguire, Timothy J., Carey, Joanna C., and Finzi, Adrien C. 2015.
"Does elevated CO2 alter silica uptake in trees?". United States. https://doi.org/10.3389/fpls.2014.00793. https://www.osti.gov/servlets/purl/1204502.
@article{osti_1204502,
title = {Does elevated CO2 alter silica uptake in trees?},
author = {Fulweiler, Robinson W. and Maguire, Timothy J. and Carey, Joanna C. and Finzi, Adrien C.},
abstractNote = {Human activities have greatly altered global carbon (C) and Nitrogen (N) cycling. In fact, atmospheric concentrations of carbon dioxide (CO2) have increased 40% over the last century and the amount of N cycling in the biosphere has more than doubled. In an effort to understand how plants will respond to continued global CO2 fertilization, longterm free-air CO2 enrichment experiments have been conducted at sites around the globe. Here we examine how atmospheric CO2 enrichment and N fertilization affects the uptake of silicon (Si) in the Duke Forest, North Carolina, a stand dominated by Pinus taeda (loblolly pine), and five hardwood species. Specifically, we measured foliar biogenic silica concentrations in five deciduous and one coniferous species across three treatments: CO2 enrichment, N enrichment, and N and CO2 enrichment. We found no consistent trends in foliar Si concentration under elevated CO2, N fertilization, or combined elevated CO2 and N fertilization. However, two-thirds of the tree species studied here have Si foliar concentrations greater than well-known Si accumulators, such as grasses. Based on net primary production values and aboveground Si concentrations in these trees, we calculated forest Si uptake rates under control and elevated CO2 concentrations. Due largely to increased primary production, elevated CO2 enhanced the magnitude of Si uptake between 20 and 26%, likely intensifying the terrestrial silica pump. This uptake of Si by forests has important implications for Si export from terrestrial systems, with the potential to impact C sequestration and higher trophic levels in downstream ecosystems.},
doi = {10.3389/fpls.2014.00793},
url = {https://www.osti.gov/biblio/1204502},
journal = {Frontiers in Plant Science},
issn = {1664-462X},
number = ,
volume = 5,
place = {United States},
year = {Tue Jan 13 00:00:00 EST 2015},
month = {Tue Jan 13 00:00:00 EST 2015}
}
Web of Science
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A Transporter Regulating Silicon Distribution in Rice Shoots
journal, May 2008
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journal, September 2014
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Carbon allocation in forest ecosystems
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Tansley Review No. 22 What becomes of the transpiration stream?
journal, March 1990
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Evaluating ecosystem responses to rising atmospheric CO2 and global warming in a multi-factor world
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journal, November 2004
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Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
journal, June 2003
- Nemani, R. R.
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journal, November 2013
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journal, January 2013
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Silicon
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PROGRESSIVE NITROGEN LIMITATION OF ECOSYSTEM PROCESSES UNDER ELEVATED CO 2 IN A WARM-TEMPERATE FOREST
journal, January 2006
- Finzi, Adrien C.; Moore, David J. P.; DeLucia, Evan H.
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Agricultural silica harvest: have humans created a new loop in the global silica cycle?
journal, June 2012
- Vandevenne, Floor; Struyf, Eric; Clymans, Wim
- Frontiers in Ecology and the Environment, Vol. 10, Issue 5
Effects of Forest Cutting and Herbicide Treatment on Nutrient Budgets in the Hubbard Brook Watershed-Ecosystem
journal, January 1970
- Likens, Gene E.; Bormann, F. Herbert; Johnson, Noye M.
- Ecological Monographs, Vol. 40, Issue 1
Nitrogen enrichment increases net silica accumulation in a temperate salt marsh
journal, November 2012
- Carey, J. C.; Fulweiler, R. W.
- Limnology and Oceanography, Vol. 58, Issue 1
Anthropogenic impact on amorphous silica pools in temperate soils
journal, January 2011
- Clymans, W.; Struyf, E.; Govers, G.
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Works referencing / citing this record:
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