Functional spatial scale of community composition change in response to windthrow disturbance in a deciduous temperate forest

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Community dynamics in local habitats are affected by landscape characteristics such as the area and connectivity of surrounding habitats at a functional spatial scale where the community responds to landscape structure. However, the functional spatial scale at which community composition is affected by landscape structure has never been explored. We assessed the functional spatial scales of composition change in birds and in three types of arthropod communities (canopy, forest-floor and flying ones) with regard to landscape heterogeneity resulting from a large typhoon in a temperate forest of Japan. We examined the effects of tree-fall disturbance on the communities at various spatial scales, with special attention to compositional evenness. The spatial scale of the best-fitting model, which was selected from models fitted to the disturbance area at stepwise spatial scales, was interpreted as the community-specific functional spatial scale. The composition of all communities studied was all significantly dependent on gap area. The functional spatial scale was highest in birds (370 m in radius), intermediate in flying arthropods (90 m) and lowest in canopy and forest-floor arthropods (10 m). This result may reflect typical dispersal ability and the spatial range of resource use in the community. Compositional changes in each community were consistent with theory regarding traits and responses of component taxa, although the enhancement of evenness was observed only in the arthropod communities. These results imply that management and reserve selection based on functional spatial scales can be effective in the conservation of biodiversity and ecosystem services at the community level.

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  • Ecological research  

    Ecological research 23(2), 249-258, 2008-03-01 

    Springer

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各種コード

  • NII論文ID(NAID)
    10021089819
  • NII書誌ID(NCID)
    AA10667816
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09123814
  • NDL 記事登録ID
    9424960
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z54-F754
  • データ提供元
    CJP書誌  NDL  IR 
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