PaulRandleChapmanEtAl2004

Référence

Paul, J.R., Randle, A.M., Chapman, C.A., Chapman, L.J. (2004) Arrested succession in logging gaps: Is tree seedling growth and survival limiting? African Journal of Ecology, 42(4):245-251. (Scopus )

Résumé

Thirty years after selective timber harvest in the Kibale National Park, Uganda, many abandoned logging gaps are dominated by Acanthus pubescens, and show little forest recovery. To examine if this arrested successional state was caused by limited tree seedling growth and survival, we planted seedlings of four forest tree species (Albizia grandibracteata, Mimusops bagshawei, Prunus africana and Uvariopsis congensis) in A. pubescens-dominated logging gaps and in control areas of adjacent forest. To assess if clearing A. pubescens facilitates forest regeneration, we planted seedlings of two species (A. grandibracteata and U. congensis) in small clearings cut within the logging gaps. We examined mortality, growth, herbivory and site characteristics among the treatments. Finally, we described the physical attributes of the A. pubescens-dominated gaps. Seedlings of all the four species survived and grew equally well in A. pubescens and forest treatments, and most site characteristics were also similar. Seedlings planted in clearings grew more than in either forest or A. pubescens sites. Very few established trees were found in A. pubescens sites, and most of these were near the forest edges. We also discussed the role of elephants (Loxodonta africana) and collapsing A. pubescens canopies in the maintenance of an arrested successional state in these logging gaps.

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@ARTICLE { PaulRandleChapmanEtAl2004,
    AUTHOR = { Paul, J.R. and Randle, A.M. and Chapman, C.A. and Chapman, L.J. },
    TITLE = { Arrested succession in logging gaps: Is tree seedling growth and survival limiting? },
    JOURNAL = { African Journal of Ecology },
    YEAR = { 2004 },
    VOLUME = { 42 },
    PAGES = { 245--251 },
    NUMBER = { 4 },
    __MARKEDENTRY = { [Luc:6] },
    ABSTRACT = { Thirty years after selective timber harvest in the Kibale National Park, Uganda, many abandoned logging gaps are dominated by Acanthus pubescens, and show little forest recovery. To examine if this arrested successional state was caused by limited tree seedling growth and survival, we planted seedlings of four forest tree species (Albizia grandibracteata, Mimusops bagshawei, Prunus africana and Uvariopsis congensis) in A. pubescens-dominated logging gaps and in control areas of adjacent forest. To assess if clearing A. pubescens facilitates forest regeneration, we planted seedlings of two species (A. grandibracteata and U. congensis) in small clearings cut within the logging gaps. We examined mortality, growth, herbivory and site characteristics among the treatments. Finally, we described the physical attributes of the A. pubescens-dominated gaps. Seedlings of all the four species survived and grew equally well in A. pubescens and forest treatments, and most site characteristics were also similar. Seedlings planted in clearings grew more than in either forest or A. pubescens sites. Very few established trees were found in A. pubescens sites, and most of these were near the forest edges. We also discussed the role of elephants (Loxodonta africana) and collapsing A. pubescens canopies in the maintenance of an arrested successional state in these logging gaps. },
    ADDRESS = { University of Pittsburgh, Program in Ecology and Evolution, Department of Biological Sciences, Pittsburgh, PA 15260, United States },
    COMMENT = { Cited By (since 1996):23 Export Date: 14 February 2014 Source: Scopus },
    KEYWORDS = { Acanthus, Kibale, Regeneration, Succession, Tropical forest },
    OWNER = { Luc },
    TIMESTAMP = { 2014.02.14 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-12544257803&partnerID=40&md5=02e713840e770e50473712823f5dafb9 },
}

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