KeddyTwolan-StruttShipley1997

Référence

Keddy, P., Twolan-Strutt, L., Shipley, B. (1997) Experimental evidence that interspecific competitive asymmetry increases with soil productivity. Oikos, 80(2):253-256.

Résumé

This study tests the assertion that the degree of competitive asymmetry between pairs of plant species increases with increasing soil productivity. We measured the average degree of competitive asymmetry in an outdoor experiment involving 18 species of herbaceous wetland plants in each of three levels of soil productivity (1/10 NPK fertilizer + drained soil, full NPK fertilizer + drained soil and full NPK fertilizer + saturated soil). Plants, two per pot, were grown from seed over one growing season. The degree of competitive asymmetry increased 1.31 times in level 2 and 1.45 times in level three of the soil productivity treatment, relative to the least productive treatment.

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@ARTICLE { KeddyTwolan-StruttShipley1997,
    AUTHOR = { Keddy, P. and Twolan-Strutt, L. and Shipley, B. },
    TITLE = { Experimental evidence that interspecific competitive asymmetry increases with soil productivity },
    JOURNAL = { Oikos },
    YEAR = { 1997 },
    VOLUME = { 80 },
    PAGES = { 253-256 },
    NUMBER = { 2 },
    NOTE = { 00301299 (ISSN) Cited By (since 1996): 34 Export Date: 26 April 2007 Source: Scopus CODEN: OIKSA Language of Original Document: English Correspondence Address: Keddy, P.; Dept of Biology; Univ. of Ottawa; Box 450 Ottawa, Ont. K1N 6N5, Canada References: Bonser, S.P., Reader, R.J., Plant competition and herbivory in relation to vegetation biomass (1995) Ecology, 76, pp. 2176-2183; Goldberg, D.E., Fleetwood, L., Competitive effect and response in four annual plants (1987) J. Ecol., 75, pp. 1131-1143; Grace, J.B., Pugesek, B.H., A general model of plant species richness and its application to a coastal wetland (1996) Am. Nat., , in press; Grime, J.P., (1979) Plant Strategies and Vegetation Processes, , Wiley, Chichester; Grubb, P.J., Plant populations and vegetation in relation to habitat, disturbance and competition: Problems of generalization (1985) The Population Structure of Vegetation, pp. 595-611. , White. J. (ed.), Junk, Dordrecht; Harper, J.L., (1977) Population Biology of Plants, , Academic Press, London; Harra, T., Yokozawa, Effects of physiological and environmental variations on size-structure dynamics in plant populations (1994) Ann. Bot., 73, pp. 39-51; Kadmon, R.K., Plant competition along soil moisture gradients: A field experiment with the desert annual Stipa capensis (1995) J. Ecol., 83, pp. 253-262; Keddy, P.A., Competitive hierarchies and centrifugal organization in plant communities (1990) Perspectives on Plant Competition, p. 265. , Grace, J. and Tilman, D. (eds), Academic Press, San Diego, CA; Twolan-Strutt, L., Wisheu, I.C., Competitive effect and response rankings in 20 wetland plants: Are they consistent across three environments? (1994) J. Ecol., 82, pp. 635-643; Mahmoud, A., Grime, J.P., An analysis of competitive ability in three perennial grasses (1976) New Phytol., 77, pp. 431-435; Newman, E.I., Competition and diversity in herbaceous vegetation (1973) Nature, 244, pp. 310-311; Reader, R.J., Wilson, S.D., Tilman, D., Morris, E.C., Grace, J.B., McGraw, J.B., Olff, H., Beisner, B.E., Plant competition in relation to neighbor biomass: An intercontinental study with Poa pratensis (1994) Ecology, 75, pp. 1753-1760; Searle, S.R., (1987) Linear Models for Unbalanced Data, , Wiley, New York; Shipley, B., A null model for competitive hierarchies in competition matrices (1993) Ecology, 74, pp. 1693-1699; Keddy, P., Evaluating the evidence for competitive hierarchies in plant communities (1994) Oikos, 69, pp. 340-345; Silvertown, J., Dodd, M.E., McConway, K., Potts, J., Crawby, M., Rainfall, biomass variation and community composition in the Park Grass experiment (1994) Ecology, 75, pp. 2430-2437; Stern, W.R., Donald, C.M., Light relationships in grass-clover swards (1962) Aust. J. Agric. Res., 13, pp. 599-614; Tilman, D., (1988) Plant Strategies and the Dynamics and Structure of Plant Communities, , Princeton Univ. Press, Princeton, NJ; Wilson, S.D., Keddy, P.A., Species competitive ability and position along a natural stress/disturbance gradient (1986) Ecology, 67, pp. 1236-1242; Tilman, D., Plant competition and resource availability in response to disturbance and fertilization (1993) Ecology, 74, pp. 599-611. },
    ABSTRACT = { This study tests the assertion that the degree of competitive asymmetry between pairs of plant species increases with increasing soil productivity. We measured the average degree of competitive asymmetry in an outdoor experiment involving 18 species of herbaceous wetland plants in each of three levels of soil productivity (1/10 NPK fertilizer + drained soil, full NPK fertilizer + drained soil and full NPK fertilizer + saturated soil). Plants, two per pot, were grown from seed over one growing season. The degree of competitive asymmetry increased 1.31 times in level 2 and 1.45 times in level three of the soil productivity treatment, relative to the least productive treatment. },
    KEYWORDS = { competitive asymmetry interspecific competition plant soil productivity },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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