LechowiczSchoenBell1988

Référence

Lechowicz, M.J., Schoen, D.J., Bell, G. (1988) Environmental correlates of habitat distribution and fitness components in Impatiens capensis and Impatiens pallida. Journal of Ecology, 76(4):1043-1054.

Résumé

Aspects of growth and reproduction of Impatiens capensis and I. pallida (Balsaminaceae) were correlated with a range of availabilities of water, light and inorganic nutrients in diverse microhabitats on Mont St. Hilaire, Quebec. Compared to I. capensis, I. pallida predominantly grows in a narrower range of habitats that are both significantly drier and richer in nitrate and P. Sites dominated by I. pallida also tend to be richer in K, to be relatively poor in Ca and Mg, and to have significantly lower soil pH. In the habitats on Mont St. Hilaire where each species commonly grows, I. pallida attains a significantly greater biomass and has higher fecundity than I. capensis, although the 2 species do not differ in numbers of cleistogamous capsules produced per plant. Growth and reproduction are greatest on sites rich in K and P, and high in organic matter for I. pallida. In I. pallida, fecundity increases with availability of nitrate but decreases with ammonium -from Authors

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@ARTICLE { LechowiczSchoenBell1988,
    AUTHOR = { Lechowicz, M.J. and Schoen, D.J. and Bell, G. },
    TITLE = { Environmental correlates of habitat distribution and fitness components in Impatiens capensis and Impatiens pallida },
    JOURNAL = { Journal of Ecology },
    YEAR = { 1988 },
    VOLUME = { 76 },
    PAGES = { 1043-1054 },
    NUMBER = { 4 },
    NOTE = { 00220477 (ISSN) Cited By (since 1996): 4 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English },
    ABSTRACT = { Aspects of growth and reproduction of Impatiens capensis and I. pallida (Balsaminaceae) were correlated with a range of availabilities of water, light and inorganic nutrients in diverse microhabitats on Mont St. Hilaire, Quebec. Compared to I. capensis, I. pallida predominantly grows in a narrower range of habitats that are both significantly drier and richer in nitrate and P. Sites dominated by I. pallida also tend to be richer in K, to be relatively poor in Ca and Mg, and to have significantly lower soil pH. In the habitats on Mont St. Hilaire where each species commonly grows, I. pallida attains a significantly greater biomass and has higher fecundity than I. capensis, although the 2 species do not differ in numbers of cleistogamous capsules produced per plant. Growth and reproduction are greatest on sites rich in K and P, and high in organic matter for I. pallida. In I. pallida, fecundity increases with availability of nitrate but decreases with ammonium -from Authors },
    KEYWORDS = { growth reproduction Canada, Quebec, Mont St Hilaire Balsaminaceae Impatiens capensis Impatiens pallida },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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