Fyles1989

Référence

Fyles, J.W. (1989) Seed bank populations in upland coniferous forests in central Alberta. Canadian Journal of Botany, 67(1):274-278.

Résumé

The species composition and abundance of viable seed in organic forest floor and surface mineral soil from 2 high-latitude jack pine Pinus banksiana dominated and 2 white spruce Picea glauca dominated stands were determined by enumerating germinants from samples placed on moist peat-moss beds. Estimated seed density ranged from 500-2600 seeds/m2, representing 13 species of trees, shrubs and forbs. About half of the species in the seed bank were present as mature plants in each stand. The high seed densities recorded are inconsistent with the previously proposed poleward decline in the abundance of buried seed. The role of buried viable seed differed among species in relation to inherent seed dispersal capabilities and seed longevity. Several species were recorded that have a very short period of viability in the soil. Even a short residence in the seed bank may be adaptive in areas where spring burning accounts for a large proportion of the total area burned annually. -Author

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@ARTICLE { Fyles1989,
    AUTHOR = { Fyles, J.W. },
    TITLE = { Seed bank populations in upland coniferous forests in central Alberta },
    JOURNAL = { Canadian Journal of Botany },
    YEAR = { 1989 },
    VOLUME = { 67 },
    PAGES = { 274-278 },
    NUMBER = { 1 },
    NOTE = { 00084026 (ISSN) Cited By (since 1996): 9 Export Date: 26 April 2007 Source: Scopus Language of Original Document: English },
    ABSTRACT = { The species composition and abundance of viable seed in organic forest floor and surface mineral soil from 2 high-latitude jack pine Pinus banksiana dominated and 2 white spruce Picea glauca dominated stands were determined by enumerating germinants from samples placed on moist peat-moss beds. Estimated seed density ranged from 500-2600 seeds/m2, representing 13 species of trees, shrubs and forbs. About half of the species in the seed bank were present as mature plants in each stand. The high seed densities recorded are inconsistent with the previously proposed poleward decline in the abundance of buried seed. The role of buried viable seed differed among species in relation to inherent seed dispersal capabilities and seed longevity. Several species were recorded that have a very short period of viability in the soil. Even a short residence in the seed bank may be adaptive in areas where spring burning accounts for a large proportion of the total area burned annually. -Author },
    KEYWORDS = { forest jack pine pine seed bank spruce white spruce Canada, Alberta Picea glauca Pinus banksiana },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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