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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:
| 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. |
Publishing Information: | Amsterdam: Elsevier Science Publishers |
# of Pages: | 14 |
Keywords: | TIC Keywords: Carbon dioxide; Grasslands; Growth analysis; Stomatal conductance; Water use efficiency
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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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| 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 |
| MSU catalog number: S 589.7 .A34 |
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