Full TGIF Record # 69431
Item 1 of 1
Web URL(s):https://link.springer.com/article/10.1023/A%3A1004801718567
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
Publication Type:
i
Refereed
Author(s):Sindhøj, Erik; Hansson, Ann-Charlotte; Andrén, Olof; Kätterer, Thomas; Marissink, Mark; Pettersson, Roger
Author Affiliation:Sindhøj, Andrén, and Kätterer: Department of Soil Sciences, SLU, Uppsala, Sweden; Hansson, Marissink, and Pettersson: Department of Ecology and Crop Production Science, SLU, Uppsala, Sweden
Title:Root dynamics in a semi-natural grassland in relation to atmospheric carbon dioxide enrichment, soil water and shoot biomass
Source:Plant and Soil. Vol. 223, No. 1/2, 2000, p. 253-263.
# of Pages:11
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Keywords:TIC Keywords: Roots; Root systems; Density; Root depth; Grasslands; Carbon dioxide; Carbon dioxide enrichment; Soil water relations; Shoots; Biomass; Responses; Comparisons; Precipitation; Temperatures; Solar radiation; Soil moisture; Soil water content; Root growth; Weather; Climatic factors
Abstract/Contents:"Plant responses to increasing atmospheric CO₂ concentrations have been studied intensively. However, the effects of elevated CO₂ on root dynamics, which is important for global carbon budgets as well as for nutrient cycling in ecosystems, has received much less attention. We used minirhizotrons inside open-top chambers to study the effects of elevated atmospheric carbon dioxide concentration on root dynamics in a nutrient-poor semi-natural grassland in central Sweden. We conducted our investigation over three consecutive growing seasons during which three treatments were applied at the site: Elevated (≅ 700 μmol mol⁻¹) and ambient (≅ 360 μmol mol mol⁻¹) chamber levels of CO₂ and a control, without a chamber. During 1997, a summer with two dry periods, the elevated treatment compared with ambient had a 25% greater mean root counts, 65% greater above-ground biomass and 15% greater soil moisture. The chambers seemed responsible for changes in root dynamics, whereas the elevated CO₂ treatment in general increased the absolute sum of root counts compared with the ambient chamber. In 1998, a wet growing season, there were no significant differences in shoot biomass or root dynamics and both chamber treatments had lower soil moisture than the control. We found that as seasonal dryness increased, the ratio of elevated - ambient shoot biomass production increased while the root to shoot ratio decreased. We conclude that this grasslands response to elevated CO₂ is dependent on seasonal weather conditions and that CO₂ enrichment will most significantly increase production in such a grassland when under water stress."
Language:English
References:28
Note:Graphs
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sindhøj, E., A.-C. Hansson, O. Andrén, T. Kätterer, M. Marissink, and R. Pettersson. 2000. Root dynamics in a semi-natural grassland in relation to atmospheric carbon dioxide enrichment, soil water and shoot biomass. Plant Soil. 223(1/2):p. 253-263.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=69431
If there are problems with this record, send us feedback about record 69431.
Choices for finding the above item:
Web URL(s):
https://link.springer.com/article/10.1023/A%3A1004801718567
    Last checked: 09/27/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide page
Find Item @ MSU
MSU catalog number: SB 13 .P55
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)