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TAKYU Masaaki Professor |
Employment Record in Research 【 display / non-display 】
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Forest Science Lecturer
2003.04 - 2009.09
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Forest Science Associate Professor
2009.10 - 2013.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Forest Science Professor
2013.04 - 2017.03
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Tokyo University of Agriculture Faculty of Regional Environment Science Department of Regional Regeneration Science Professor
2017.04
Research Areas 【 display / non-display 】
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Life Science / Ecology and environmental science
Papers 【 display / non-display 】
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Effects of landscape structural changes on species composition in mountainous rural communities
Minami Tomohiro, Takyu Masaaki
Japanese Journal of Conservation Ecology 30 ( 1 ) 69 - 81 2025.05
Language：Japanese Publisher：The Ecological Society of Japan
<p>Farming and other traditional land uses are being abandoned in mountainous rural communities throughout Japan. This study investigated factors influencing this trend and the effects of resulting landscape structural changes on species composition and function in four taxa in 20 rural communities of the village of Otari, at the foot of the Hakuba Mountains in Nagano Prefecture, Japan. The four taxa (birds, butterflies, ground-dwelling beetles, and plants) were selected for their different dispersal and resource dependence characteristics. Generalised linear model (GLM) analyses showed that the number of houses (as an index of workforce) and solar radiation amount (as an index of crop productivity) significantly influenced declines in farmland and landscape diversity from the 1950s to the present. Landscape structural changes significantly affected the species composition of the four taxa according to nonmetric multidimensional scaling ordination, as well as the numbers of individual migratory birds, univoltine butterflies, and specialist ground beetles according to GLM analysis. We conclude that the natural and socioeconomic factors controlling the persistence of rural communities played a significant role in altering the landscape structure in the study region, which in turn affected the species and functional composition of biological communities.</p>
DOI： 10.18960/hozen.2406
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MORIWAKI Hiroki, NAKAJIMA Kazuhide, OKANO Takeru, NAKAMA Shunsuke, KOMADA Natsuki, TAKYU Masaaki
The Journal of Japanese Botany 100 ( 2 ) 154 - 157 2025.04
Language：Japanese Publisher：The Editorial Board of The Journal of Japanese Botany
<p> <i>Urochloa villosa</i> f. <i>glabriglumis</i> was recollected in the coastal grasslands of Ishigaki Island, Okinawa Prefecture, Japan. This is the first record of this species in Okinawa Prefecture in 47 years since a collection in 1977.</p>
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Rediscovery of <i>Crotalaria calycina</i> (Fabaceae) after 47 years on Ishigaki Island, Japan
Moriwaki Hiroki, Nakajima Kazuhide, Komada Natsuki, Nakama Shunsuke, Okano Takeru, Okamoto Ayuki, Takyu Masaaki
Tropics 34 ( 1 ) 23 - 30 2025
Language：English Publisher：JAPAN SOCIETY OF TROPICAL ECOLOGY
<p>We collected <i>Crotalaria calycina</i> (Fabaceae) from a rangeland on Ishigaki Island. This is the first record of this species in Japan in 47 years, since 1977. A vegetation survey conducted to assess its habitat revealed that <i>Crotalaria calycina</i> and several coexisting grassland species were only found on the hilltop that had never undergone land consolidation and was maintained through cattle grazing. However, the dominance of invasive species in this habitat suggests that they likely have invaded from surrounding other parcels, indicating the importance of continued grazing to ensure the persistence of the species. Morphological measurements were generally consistent with literature values, except for the size of stipule, but further ecological and phylogenetic studies are required to understand its conservation values and phylogenetic origin. To properly conserve this plant, monitoring surveys need to be carried out regularly, because there are high risks of habitat loss due to development and/or abandonment of rangelands in Ishigaki Island.</p>
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<i>Torenia benthamiana </i>Hance (Linderniaceae) Collected on Ishigaki Island, a New Record for Japan
Yamazaki Kaito, Moriwaki Hiroki, Komada Natsuki, Nakajima Kazuhide, Okamoto Ayuki, Okano Takeru, Nakama Shunsuke, Ohara Yuta, Takyu Masaaki
Acta phytotaxonomica et geobotanica 76 ( 3 ) 265 - 270 2025
Language：English Publisher：The Japanese Society for Plant Systematics
<i>Torenia benthamiana </i>Hance (Linderniaceae), found growing wild in a semi-natural grassland on Ishigaki Island, is the first record for this species in Japan. We here provide a Japanese name for this species ‘Nanto-urikusa.’
DOI： 10.18942/apg.202513
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Spatial patterns and dynamics of dominant tree species at the forest ecotone.
Yoshida Hiroto, Yoshida Keiichiro, Takyu Masaaki, Isogai Tatsuhiro
Proceedings of the General Meeting of the Association of Japanese Geographers 2024s ( 0 ) 198 2024
Language：Japanese Publisher：The Association of Japanese Geographers
Books and Other Publications 【 display / non-display 】
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関岡 東生 , 市川 隆, 今井 伸夫, 上原 巌 , 江口 文陽 , 大林 宏也, 武生 雅明, 橘 隆一, 田中 恵, 辻井 寛, 堀内 正樹, 前川 洋平, 宮澤 紀子, 本橋 慶一, 桃井 尊央, 矢部 和弘, 山崎 晃司, 吉野 聡（ Role： Contributor）
家の光協会 2023 （ ISBN:9784259518752 ）
Language：Japanese Book type：General book, introductory book for general audience
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図解知識ゼロからの林業入門
武生雅明（関岡東生監修）（ Role： Joint author , 第2章9, 題名「樹木とは何か？」、樹木の定義について解説した。）
家の光協会 2016.11 （ ISBN:978-4-259-51863-9 ）
Total pages：189 Responsible for pages：54-55 Language：Japanese Book type：General book, introductory book for general audience
林業技術の解説書
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新版地域環境科学概論
武生雅明（東京農業大学地域環境科学部編）（ Role： Joint author , 4.1 題名「地域を捉える科学」）
理工図書 2014.04 （ ISBN:978-4-8446-0825-7 ）
Total pages：278 Responsible for pages：165-172 Language：Japanese Book type：Textbook, survey, introduction
地域環境科学の学問体系と方向性について記した地域環境科学概論の教科書
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平成25年屋久島世界遺産地域における森林動態モニタリング調査業務報告書
武生雅明・相澤南美（日本自然保護協会編）（ Role： Joint author , 題名「スギ林における30年間の動態」、スギ自然林での30年間の森林動態についての調査報告を行った。）
環境省九州地方環境事務所 2014.03
Total pages：94 Responsible for pages：21-34 Language：Japanese Book type：Report
屋久島の原生自然環境保全地域における30年間の生態系モニタリング調査報告書
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Co-benefits of sustainable forestry
Takyu M., Matsubayaashi H., Wakamatsu N., Nakazono E., Lagan P., Kitayama K. (Kanehiro Kitayama ed.)（ Role： Joint author , 6章、題名「Guidelines for establishing conservation areas in sustainable forest management: Developing models to understand habitat suitability for orangutans」, 特に大型哺乳類（オランウータン）の保護区域策定手法について研究した成果を解説した。）
Springer 2013.01 （ ISBN:978-4-431-54140-0 ）
Total pages：161 Responsible for pages：113-128 Language：English Book type：Scholarly book
熱帯生産林において、持続可能な林業経営を成立させつつ生物多様性を保全する方法について研究した成果を解説した。
Misc 【 display / non-display 】
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自然再生における農の役割と課題. Invited
武生雅明
グリーンエージ 530 6 - 9 2018.02
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
Social Activities 【 display / non-display 】
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神奈川県自然環境審議会委員
2017.06
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小谷村総合戦略審議会委員
2016.12
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神奈川県森林審議会委員
2013.06
神奈川県の森林行政について審議する
Basic stance of industry-university cooperation 【 display / non-display 】
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生態系の保全・復元の技術開発への生態学の応用を模索しています。
Attractiveness of Research 【 display / non-display 】
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地域の環境を保全するには、その地域の生態系を知ることが大切です。保全生態学研究室では地道なフィールドワークにより生物の生き様を調べ、生態系の仕組みを解明していくことを目指しています。