ShipleyKeddyMooreEtAl1989

Référence

Shipley, B., Keddy, P.A., Moore, D.R.J., Lemky, K. (1989) Regeneration and establishment strategies of emergent macrophytes. Journal of Ecology, 77(4):1093-1110.

Résumé

The covariation within, and the relationship between 7 juvenile (seed/seedling) and 13 adult traits of 25 species of emergent macrophytes occurring along the Ottawa River, Canada, is described. Contrary to r-K selection, but in accordance with C-S-R theory, there was no association between these 2 sets of traits. The major axis of variation within the juvenile traits consisted, at one end, of large, slowly germinating seeds with seedlings possessing a low relative growth rate, and at the other end of small, rapidly germinating seeds with seedlings possessing a high relative growth rate. The regeneration strategies of these species are interpreted as consisting of fugitive vs. stress-tolerant juveniles. Adult traits showed 2 major trends. The largest was associated with the ability to occupy space and consisted of correlated variation in above-ground biomass, canopy diameter, rhizome thickness and rhizome or stolon length; this trend is interpreted as consisting of fugitive vs. competitive adults. A subordinate trend consisted of an uncoupling of height from above-ground biomass and was associated with the "leafless' morphology of a subset of species; this trend was related to environments in deeper water but having infertile soil and was interpreted as a stress-tolerant strategy. These trends in trait variation were related to environmental gradients of soil fertility and water depth. -Author

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@ARTICLE { ShipleyKeddyMooreEtAl1989,
    AUTHOR = { Shipley, B. and Keddy, P.A. and Moore, D.R.J. and Lemky, K. },
    TITLE = { Regeneration and establishment strategies of emergent macrophytes },
    JOURNAL = { Journal of Ecology },
    YEAR = { 1989 },
    VOLUME = { 77 },
    PAGES = { 1093-1110 },
    NUMBER = { 4 },
    NOTE = { 00220477 (ISSN) Cited By (since 1996): 49 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English },
    ABSTRACT = { The covariation within, and the relationship between 7 juvenile (seed/seedling) and 13 adult traits of 25 species of emergent macrophytes occurring along the Ottawa River, Canada, is described. Contrary to r-K selection, but in accordance with C-S-R theory, there was no association between these 2 sets of traits. The major axis of variation within the juvenile traits consisted, at one end, of large, slowly germinating seeds with seedlings possessing a low relative growth rate, and at the other end of small, rapidly germinating seeds with seedlings possessing a high relative growth rate. The regeneration strategies of these species are interpreted as consisting of fugitive vs. stress-tolerant juveniles. Adult traits showed 2 major trends. The largest was associated with the ability to occupy space and consisted of correlated variation in above-ground biomass, canopy diameter, rhizome thickness and rhizome or stolon length; this trend is interpreted as consisting of fugitive vs. competitive adults. A subordinate trend consisted of an uncoupling of height from above-ground biomass and was associated with the "leafless' morphology of a subset of species; this trend was related to environments in deeper water but having infertile soil and was interpreted as a stress-tolerant strategy. These trends in trait variation were related to environmental gradients of soil fertility and water depth. -Author },
    KEYWORDS = { aquatic macrophyte C-S-R theory r-K selection regeneration Canada, Ontario, Ottawa River },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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