Species composition and species richness of <i>Machilus thunbergii</i> secondary forests on Kuchinoerabujima Island, Japan

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  • ISHIDA Hiroaki
    Institute of Natural and Environmental Sciences, University of Hyogo

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Other Title
  • 口永良部島に分布するタブノキ二次林の種組成および種多様性
  • クチエラブジマ ニ ブンプ スル タブノキ ニジリン ノ タネ ソセイ オヨビ タネ タヨウセイ

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Abstract

<p>Kuchinoerabujima Island is a volcanic island in Kagoshima Prefecture, Japan.　Although secondary evergreen broad-leaved forests dominated by Machilus thunbergii are distributed in various locations on the island, information on their ecology is very limited.　To examine the characteristics of the species composition and richness of such forests, i.e. M. thunbergii secondary forests （MSF）, we conducted surveys of MSF and Castanopsis sieboldii secondary forests（ CSF） on the island.　We also compared data obtained via surveys of the MSF with published data from M. thunbergii natural forests （MNF） and MSF distributed in neighboring regions of the island.　The species composition of MSF on the island differed from that of CSF on the island as well as that of MNF and MSF in neighboring regions.　The habitat condition of MSF on the island was substantially different from that of MNF in neighboring regions.　We considered that, as a result of succession, the MSF on the island would change in the future to a climax forest dominated by C. sieboldii rather than a climax forest dominated by M. thunbergii.　Species richness （the number of species per 100-m2 plot） was slightly higher in MSF on the island than in CSF on the island or MSF in neighboring regions, but much lower in MSF on the island than in MNF in neighboring regions.</p>

Journal

  • Vegetation Science

    Vegetation Science 36 (2), 71-79, 2019

    The Society of Vegetation Science

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