TellierDuchesneRuelEtAl1995

Référence

Tellier, R., Duchesne, L.C., Ruel, J.-C. and McAlpine, R.S. (1995) Effects of directed burning intensity on diversity of plant-species in a jack pine stand (Pinus-Banksiana lamb). Ecoscience, 2(2):159-167.

Résumé

Vegetation development was studied in a jack pine (Pinus banksiana) clear-cut one and two years after prescribed burning or scarification. Even if differences were found in species composition, most species present before treatment were also present afterward. However, variations in the abundance of those species were observed: a strong initial decrease in shrub and grass biomass was noted on the burned-over plots, whereas scarification affected only the grass biomass. On the second year, the influence of burning and scarification on plant biomass significantly decreased. Fire intensity correlated negatively with shrub biomass and positively with tall forbs biomass. Shannon's diversity index was calculated for each of the vegetation characteristics (percent cover, number of individuals, frequency and biomass). One year after treatment, prescribed burning and scarification affected all diversity indices except those based on the number of individuals. Richness and diversity indices based on percent cover and biomass were lower on the burned and scarified plots than on the clear-cut plots, while there were no differences between the indices based on frequency between burned and clear-cut plots. These effects were, however, neglible two years after treatment. No correlation was found between fire intensity and any of the diversity indices one year after treatment, but indices based on percent cover and number of individuals correlated with fire intensity the second year after treatment.

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@ARTICLE { TellierDuchesneRuelEtAl1995,
    AUTHOR = { Tellier, R. and Duchesne, L.C. and Ruel, J.-C. and McAlpine, R.S. },
    TITLE = { Effects of directed burning intensity on diversity of plant-species in a jack pine stand (Pinus-Banksiana lamb) },
    JOURNAL = { Ecoscience },
    YEAR = { 1995 },
    VOLUME = { 2 },
    PAGES = { 159-167 },
    NUMBER = { 2 },
    NOTE = { Times Cited: 7 },
    ABSTRACT = { Vegetation development was studied in a jack pine (Pinus banksiana) clear-cut one and two years after prescribed burning or scarification. Even if differences were found in species composition, most species present before treatment were also present afterward. However, variations in the abundance of those species were observed: a strong initial decrease in shrub and grass biomass was noted on the burned-over plots, whereas scarification affected only the grass biomass. On the second year, the influence of burning and scarification on plant biomass significantly decreased. Fire intensity correlated negatively with shrub biomass and positively with tall forbs biomass. Shannon's diversity index was calculated for each of the vegetation characteristics (percent cover, number of individuals, frequency and biomass). One year after treatment, prescribed burning and scarification affected all diversity indices except those based on the number of individuals. Richness and diversity indices based on percent cover and biomass were lower on the burned and scarified plots than on the clear-cut plots, while there were no differences between the indices based on frequency between burned and clear-cut plots. These effects were, however, neglible two years after treatment. No correlation was found between fire intensity and any of the diversity indices one year after treatment, but indices based on percent cover and number of individuals correlated with fire intensity the second year after treatment. },
    KEYWORDS = { PRESCRIBED BURNING; FIRE; PINUS; SCARIFICATION; BIODIVERSITY ELLIOTTII FLATWOODS; PRESCRIBED FIRE; EARLY RESPONSES; REGENERATION; UNDERSTORY; SUCCESSION; FREQUENCY; BIOMASS; COVER },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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