Dynamics of Sasa borealis (Hack.) Makino et Shibata community induced by the grazing of sika deer (Cervus nippon) : The change from 2003 to 2014 in Shiiba Research Forest, Kyushu University

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  • Cho Keiichiro
    Shiiba Research Forest, University Forests, School of Agriculture, Kyushu University
  • Enoki Tsutomu
    Laboratory of Forest Resource Management, Division of Forest Sciences, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University
  • Kaji Kiyohiro
    Shiiba Research Forest, University Forests, School of Agriculture, Kyushu University
  • Yamauchi Kohei
    Shiiba Research Forest, University Forests, School of Agriculture, Kyushu University
  • Ogata Taketo
    Shiiba Research Forest, University Forests, School of Agriculture, Kyushu University
  • Shiiba Yasuki
    Shiiba Research Forest, University Forests, School of Agriculture, Kyushu University

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  • ニホンジカの摂食圧増加にともなうスズタケの動態 : 九州大学宮崎演習林における2003年と2014年の比較
  • ニホンジカ ノ セッショクアツ ゾウカ ニ トモナウ スズタケ ノ ドウタイ : キュウシュウ ダイガク ミヤザキ エンシュウリン ニ オケル 2003ネン ト 2014ネン ノ ヒカク

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Abstract

The distribution patterns of Sasa borealis (Hack.) Makino et Shibata in the Shiiba Research Forest, Kyushu University (2,915ha) were compared between 2003 and 2014, to evaluate the effects of sika deer (Cervus nippon) on the forest floor vegetation. In 2003, S. borealis was not observed in most of Sampo-dake area (2,282 ha) and Kayahara-yama area (146 ha), while it was observed in most of Tsuno-dake area (487 ha). In 2014, S. borealis was declined in most of Tsuno-dake area. We recently obseved a rapid increase in sika deer density in the Tsuno-dake area on spotlight census. There was no area in which S. borealis recovered. S. borealis tended to remain in low elevation and in the area where silvicultural manipulation had been conducted during the period between the surveys.

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