Effect of fire regime on the grass community of the humid savanna of lamto, ivory coast

Kouame Fulgence Koffi, Aya Brigitte N'dri, Jean Christophe Lata, Souleymane Konaté, Tharaniya Srikanthasamy, Marcel Konan, Sébastien Barot

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    This study assesses the impact of four fire treatments applied yearly over 3 y, i.e. early fire, mid-season fire, late fire and no fire treatments, on the grass communities of Lamto savanna, Ivory Coast. We describe communities of perennial tussock grasses on three replicated 5 × 5-m or 10 × 5-m plots of each fire treatment. Tussock density did not vary with fire treatment. The relative abundance of grass species, the circumference of grass tussocks and the probability of having a tussock with a central die-back, varied with fire treatment. Mid-season fire had the highest proportion of tussocks with a central die-back while the late fire had the smallest tussocks. Tussock density, circumference, relative abundance and probability of having a central die-back varied with species. Andropogon canaliculatus and Hyparrhenia diplandra were the most abundant of the nine grass species. They had the largest tussocks and the highest proportion of tussock with a central die-back. Loudetia simplex was the third most abundant species but was very rare in no fire plots. The distribution of tussock circumferences was right skewed and dominated by small tussocks. The proportion of the tussocks with a central die-back strongly increased with circumference, which could lead to tussock fragmentation. Taken together, this study suggests that fire regimes impact grass demography and that this impact depends on grass species and tussock size.

    Original languageEnglish
    Pages (from-to)1-7
    Number of pages7
    JournalJournal of Tropical Ecology
    Volume35
    Issue number1
    DOIs
    Publication statusPublished - 1 Jan 2019

    Keywords

    • Fire regimes
    • Humid savanna
    • Perennial grass
    • Savanna fire
    • Tussock circumference
    • Tussock density

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics

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