StewartPotvin1996

Référence

Stewart, J., Potvin, C. (1996) Effects of elevated CO2 on an artificial grassland community: Competition, invasion and neighbourhood growth. Functional Ecology, 10(2):157-166.

Résumé

1. We analysed the effect of CO2 enrichment on plant-plant interactions in an artificial community dominated by Trifolium repens and Poa pratensis. Plants were enriched either in open-tops or growth chambers. 2. Our main hypotheses were supported, i.e. elevated CO2 increased the strength and number of plant-plant interactions and Trifolium benefited more than Poa from a high CO2 concentration. However, responses differed depending on whether plants were enriched in open-top or in growth chambers. These differences are discussed regarding possible density dependence. 3. This study emphasizes the importance of invasions in the dynamics of our artificial community. Invasiveness was best predicted by traits pertaining to space acquisition. 4. To provide insights into evolutionary processes, phenotypic plasticity and genetic correlation of individual traits were analysed across environments. Our results suggest that little opportunity had occurred for adaptive plasticity to evolve for most characters.

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@ARTICLE { StewartPotvin1996,
    AUTHOR = { Stewart, J. and Potvin, C. },
    TITLE = { Effects of elevated CO2 on an artificial grassland community: Competition, invasion and neighbourhood growth },
    JOURNAL = { Functional Ecology },
    YEAR = { 1996 },
    VOLUME = { 10 },
    PAGES = { 157-166 },
    NUMBER = { 2 },
    NOTE = { 02698463 (ISSN) Cited By (since 1996): 14 Export Date: 26 April 2007 Source: Scopus CODEN: FECOE Language of Original Document: English Correspondence Address: Stewart, J.; Department of Biology; McGill University; 1205 Dr Penfield Montreal, Que. HBA 1B1, Canada References: Aarssen, L., Ecological combining ability and competitive combining ability in plants: Toward a general evolutionary theory of coexistence in systems of competition (1983) American Naturalist, 122, pp. 707-731; Andersson, S., Shaw, R.G., Phenotypic plasticity in Crepis tectorum (Asteraceae): Genetic correlations across light regimens (1994) Heredity, 72, pp. 113-125; (1990) Guide de Fertilization, 3rd Edn., , Association des fabriquants d'engrais du Que?bec, Montre?al, Canada; Bazzaz, P.A., The response of natural ecosystems to the rising global CO2 levels (1990) Annual Review of Ecology and Systematics, 21, pp. 167-196; Bengtsson, J., Fagerstro?m, T., Rydin, H., Competition and coexistence in plant communities (1994) Trends in Ecology and Evolution, 9, pp. 246-250; Cain, M.L., Pacala, S.W., Silander Jr., J.A., Fortin, M.J., Neighborhood models of clonal growth in the white clover, Trifolium repens (1995) American Naturalist, 145, pp. 888-917; Curtis, P., Jenkins, D., Kalisz, S., Tonsor, S.J., Evidence for variable genetic response to elevated CO2 in natural plant populations (1994) GCTE Meeting, , Leuenberg, Switzerland; Dutilleul, P., Potvin, C., Among-environment heteroscedasticity and genetic autocorrelation: Implications for the study of phenotypic plasticity (1995) Genetics, 139, pp. 1815-1829; Fry, J.D., The mixed-model analysis of variance applied to quantitative genetics: Biological meaning of the parameters (1992) Evolution, 46, pp. 540-550; Gaudet, C.L., Keddy, P.A., A comparative approach to predicting competitive ability from plant traits (1988) Nature, 334, pp. 242-243; Goldberg, D.E., Barton, A.M., Patterns and consequences of interspecific competition in natural communities: A review of field experiments with plants (1992) American Naturalist, 139, pp. 771-801; Grime, J.P., Evidence for the existence of three primary strategies in plants and its relevance to ecological and evolutionary theory (1977) American Naturalist, 111, pp. 1169-1194; Ko?rner, C., CO2 fertilization: The great uncertainty in future vegetation development (1993) Vegetation Dynamics and Global Change, pp. 53-70. , (eds A. M. Solomon \& H. H. Shugart), Chapman \& Hall, London, New York; Ko?rner, C., Scaling from species to vegetation: The usefulness of functional groups (1993) Biodiversity and Ecosystem Function, pp. 117-140. , (eds E. D. Schulze \& H. A. Mooney), Springer, Berlin; McGraw, J.B., Garbutt, K., The analysis of plant growth in ecological and evolutionary studies (1990) Trends in Ecology and Evolution, 5, pp. 251-254; Pitelka, L., Ecosystem response to elevated CO2 (1994) Trends in Ecology and Evolution, 9, pp. 204-206; Potvin, C., Lechowicz, M.J., Tardif, S., The statistical analysis of ecophysiological response curves obtained from experiments involving repeated measures (1990) Ecology, 71, pp. 1389-1400; Schmid, B., Genetic variation in the response of plants to increased CO2 in Chalk Grassland (1994) GCTE Meeting, , Leuenberg, Switzerland; Silvertown, J., Lines, A.C.M., Dale, M.P., Spatial composition between grasses - Rates of mutual invasion between four species and the interaction with grazing (1994) Journal of Ecology, 82, pp. 31-38; Strain, B.R., Cure, D.J., (1985) Direct Effects of Increasing Carbon Dioxide on Vegetation, , DOE/ER-0238, US Department of Energy, Washington, DC; Tho?rhallsdo?ttir, T.E., The dynamics of five grasses and white clover in a simulated mosaic sward (1990) Journal of Ecology, 78, pp. 909-923; Turkington, R., Klein, E., Chanway, C.P., Interactive effects of nutrients and disturbance: An experimental test of plant strategy theory (1993) Ecology, 74, pp. 863-878; Wang, Z.M., Lechowicz, M., Potvin, C., Early selection of black spruce seedlings and global change: Which genotypes should we favor? (1994) Ecological Application, 4, pp. 604-616; Winer, B., (1971) Statistical Principles in Experimental Design, , McGraw-Hill Book Co, New York. },
    ABSTRACT = { 1. We analysed the effect of CO2 enrichment on plant-plant interactions in an artificial community dominated by Trifolium repens and Poa pratensis. Plants were enriched either in open-tops or growth chambers. 2. Our main hypotheses were supported, i.e. elevated CO2 increased the strength and number of plant-plant interactions and Trifolium benefited more than Poa from a high CO2 concentration. However, responses differed depending on whether plants were enriched in open-top or in growth chambers. These differences are discussed regarding possible density dependence. 3. This study emphasizes the importance of invasions in the dynamics of our artificial community. Invasiveness was best predicted by traits pertaining to space acquisition. 4. To provide insights into evolutionary processes, phenotypic plasticity and genetic correlation of individual traits were analysed across environments. Our results suggest that little opportunity had occurred for adaptive plasticity to evolve for most characters. },
    KEYWORDS = { Co2 enrichment Genetic correlations Plant-plant interactions Poa pratensis Trifolium repens carbon dioxide enrichment grassland Fabaceae Poa pratensis Poaceae Trifolium repens },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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