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| Web URL(s): | https://academic.oup.com/aob/article/82/1/111/2587844/
Last checked: 03/01/2017
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Jongen, Marjan;
Jones, Mike B. |
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| Author Affiliation: | Botany Department, Trinity College, Uinversity of Dublin, Dublin 2, Ireland |
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| Title: | Effects of elevated carbon dioxide on plant biomass production and competition in a simulated neutral grassland community |
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| Source: | Annals of Botany. Vol. 82, No. 1, July 1998, p. 111-123. |
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| Publishing Information: | London, Oxford University Press |
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| # of Pages: | 13 |
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| Keywords: | TIC Keywords: Carbon dioxide; Biomass; Grasslands; Competition; Cynosurus cristatus; Lolium perenne; Holcus lanatus; Agrostis tenuis; Cultural methods; Leaf area; Seed mixtures; Morphology; Tillers (vegetative)
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| Abstract/Contents: | "Using open-top chambers, four prominent species (Lolium perenne, Cynosurus cristatus, Holcus lanatus and Agrostis capillaris) of Irish neutral grasslands were grown at ambient and elevated (700 Ī¼mol molā»Ā¹ atmospheric COā for a period of 8 months. The effects of interspecific competition on plant responses to COā enrichment were investigated by growing the species in a four-species mixture. The results indicate that the species differ in their ability to respond to elevated COā. COā-enrichment had the largest effect on the boiomass production of H. lanatus, but substantial stimulations in biomass production were also found for the other three species. The COā-stimulation of biomass production for H. lanatus was accompanied by increased tillering. In addition, reductions in specific leaf area were found for all species. Exposure to elevated COā increased the community biomass of the four-species mixture. This increase can be mainly attributed to a significant increase in the biomass of H. lanatus at elevated COā. No statistically-significant changes in species composition of community biomass were found. However, H. lanatus did increase its share of community biomass at each of the harvests, with the other three species, mainly L. perenne, suffering losses in their shares at elevated COā. The results show that: (1) the species varied in their response to elevated COā; and (2) species composition in natural plant communities is likely to change at elevated COā, but these changes may occur rather slowly. Much longer periods of exposure to elevated atmospheric COā may be required to permit detection of significant changes in species composition." |
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| Language: | English |
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| References: | 40 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jongen, M., and M. B. Jones. 1998. Effects of elevated carbon dioxide on plant biomass production and competition in a simulated neutral grassland community. Ann. Bot. 82(1):p. 111-123. |
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| Web URL(s):
https://academic.oup.com/aob/article/82/1/111/2587844/
Last checked: 03/01/2017
Requires: PDF Reader |
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MSU catalog number: QK 1 .A53 |
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