Dynamics of Sasa borealis (Hack.) Makino et Shibata in the Shiiba Research Forest, Kyushu University: The change from 2003 and 2014 to 2024

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  • Fujiyama Miku
    University Forest, School of Agriculture, Kyushu University
  • Kubota Katsuyoshi
    University Forest, School of Agriculture, Kyushu University
  • Kabemura Yuji
    University Forest, School of Agriculture, Kyushu University
  • Nanki Daisuke
    University Forest, School of Agriculture, Kyushu University
  • Inoue Sachiko
    University Forest, School of Agriculture, Kyushu University
  • Nakamura Takuma
    University Forest, School of Agriculture, Kyushu University
  • Yamauchi Koshiro
    University Forest, School of Agriculture, Kyushu University
  • Katayama Ayumi
    Division of Forest Environmental Science, Department of Agro-environmental Sciences, Faculty of Agriculture, Kyushu University

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Other Title
  • 九州大学宮崎演習林におけるシカの食害に伴うスズタケ消失の動態 : 2003 年および2014 年と2024 年の比較
  • 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 シカ ノ ショクガイ ニ トモナウ スズタケ ショウシツ ノ ドウタイ : 2003ネン オヨビ 2014ネン ト 2024ネン ノ ヒカク

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Description

We clarified the distribution of Sasa (Sasa borealis (Hack.) Makino et Shibata) in the Shiiba Research Forest, Kyushu University in 2014 and evaluated temporal changes in the Sasa distribution induced by overbrowsing by sika deer (Cervus nippon). Detailed information of the Sasa degradation was also described between 2021 and 2024 for each 250m mesh. The Sasa has still not been observed in the areas where it had once disappeared. Most of the Sasa had disappeared and only a few Sasa remained in Mt. Tsuno area, which was the only area where the Sasa remained in the Shiiba Research Forest in 2014. The sika deer density estimated from the spotlight census has been decreasing from 2006 to 2024 in Mt. Sampo area. The density rapidly increased between 2006 and 2016 in Mt. Tsuno area, coinciding with the period of the disappearance of the Sasa. These results suggested that the Sasa degradation was induced by sika deer over-browsing and the remaining Sasa will disappear in near future.

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