Full TGIF Record # 112563
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Web URL(s):http://www.sciencedirect.com/science/article/pii/S0167880901003565
    Last checked: 01/31/2014
    Access conditions: Item is within a limited-access website
Publication Type:
i
Report
Author(s):Marissink, Mark; Pettersson, Roger; Sindhøj, Erik
Author Affiliation:Marissink and Pettersson: Department of Ecology and Crop Production Science; Sindhøj: Department of Soil Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
Title:Above-ground plant production under elevated carbon dioxide in a Swedish semi-natural grassland
Source:Agriculture, Ecosystems, and Environment. Vol. 93, No. 1-3, December 2002, p. 107-120.
# of Pages:14
Publishing Information:Amsterdam: Elsevier Science Publishers
Keywords:TIC Keywords: Carbon dioxide; Grasslands; Growth analysis; Stomatal conductance; Water use efficiency
Abstract/Contents:"Plants have shown responses to elevated CO2 in many experiments under controlled conditions. Yet, predicting responses under field conditions is still difficult and the number of long-term field studies on elevated CO2 is limited. Here the results from 4 years' physiology and production studies in the field are presented. In a species-rich semi-natural grassland in central Sweden open-top chambers were used to study the effects of elevated carbon dioxide concentration (twice the ambient level) on plant production, physiology and species composition. The first three growing seasons showed a 30-60% increase in above-ground biomass at harvest under elevated CO2. During the fourth year there was no difference in above-ground biomass between the treatments. For all years, leaf-level photosynthesis for measured species was 30-60% higher and stomatal conductance 20-40% lower at elevated CO2 than at ambient. Nitrogen concentration in stems and leaves was 5-20% lower at elevated CO2. Specific leaf area (SLA) did not show any response to elevated CO2. The variation in the effect of CO2 on above-ground production was attributed to variation in water stress, with low water stress (high precipitation) giving the least effect. It is concluded that even in this relatively low-production system CO2 effects can persist for at least several years and even increase."
Language:English
References:28
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Marissink, M., R. Pettersson, and E. Sindhøj. 2002. Above-ground plant production under elevated carbon dioxide in a Swedish semi-natural grassland. Agric. Ecosyst. Environ. 93(1-3):p. 107-120.
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http://www.sciencedirect.com/science/article/pii/S0167880901003565
    Last checked: 01/31/2014
    Access conditions: Item is within a limited-access website
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