九州大学 アジア・オセアニア研究教育機構 ブラウンバッグセミナー

Brown Bag Seminar No.
2024

12~6.

12:10(wed.) 12:50

12:15-12:40

Introduction
Seminar()12:40-12:50

Q&A

12:10-12:15

144

Online(Zoom)

Presentation

Scan here forRegistration

https://temdec-med-kyushu-u-ac-jp.zoom.us/webinar/register/WN̲1PJ9lnZbR1uTicl7CbLf0Q
Supported by Kyushu University,Q-AOS & TEMDEC

Forest degradation currently occurringin the mountains of Kyushu- Increase in deer popultion and disappearance of dwarf bamboo Chair: Assoc. Prof. Toshinori TANAKA (Coordinator of Q-AOS)

Key Words

BeechForest ecosystems

Soil microbe
Ecosystem function

Shiiba research forest

Associate Professor

Soil erosion

Ayumi KATAYAMA
Faculty of Agriculture

I was born in Kobe City, Hyogo Prefecture. I
graduated from Kyushu University and ﬁnished
my master course. After three years of working ata private company in Tokyo, I obtained a PhD
from Kyushu University. After that, I worked as a
specially appointed assistant professor in theeducation-related program at the Field Science
Center of Hokkaido University for two years. In

Recently, the deer population has been increasing in Japan.
Generally, there is understory vegetation in forest ecosystems,
which protects soil from erosion. However, deer eat leaves,branches, bark, etc. in understory and understory vegetation
has disappeared in many places in Japan. In the mountainous

2015, I became an assistant professor at Kyushu

regions of southern Kyushu, the ground was originally covered

University. Since I was in a master's degreewith dwarf bamboo. However, since the 1980s, the number ofprogram, I conducted my research in Bornean
tropical rainforests, which had been my dreamsince high school, and am continuing mydeer ha s been increa sed and the dwar f bamboo ha sresearch in Borneo. At both Hokkaido University

disappeared. Near the mountaintop, where large beech trees

and Kyushu University, I belong to Universitythat are over 200 years old were growing, severe soil erosion isForest, which is usually located far from theuniversity campus. During my time at Hokkaido
University, I lived in Nayoro City and experienced
a world of -20 degrees Celsius. I am currently

occurring, roots are exposed, and an increasing number ofbeech trees are dying. Therefore, we investigated how the lossworking at the Miyazaki Experimental Forest inof the dwar f bamboo af fec ts the soil ecosys tem and theShiiba Village, Miyazaki Prefecture. The ﬁeld ofgrowth of beech trees. As a result, it was revealed that due tomy research is the forest, so I really enjoy life in
Shiiba where I can directly go to the ﬁeld.
Recently, the dwarf bamboo, that originallycovered understory, has disappeared due to thethe soil erosion, decrease in symbiotic fungi that neededattention for tree growth, increase in pathogenic bacteria, andincrease in the number of deer, I amthat the exposed roots accelerated the decline of the beech

investigating how the understory vegetation

trees. In the seminar, I will talk about the obtained results.

disappearance will affect the forest ecosystem.

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