SAKAI Akiko

Affiliation

Faculty of Environment and Information Sciences, Division of Natural Environment and Information

Job Title

Professor

Research Fields, Keywords

Man and Biosphere, MAB , UNESCO, disturbance, 削剥, resource allocation, 湿潤変動帯, landslide, tree form, vegetation, 植物, plant ecology, 森林, forest ecology, evolutional ecology, growth, life history, habitat segregation, Biosphere Reserve, strategy, landform, 地表撹乱, distribution, reproduction, 非構造性炭水化物, 尾根-谷傾度, micro-topography, sprout

Mail Address

E-mail address

Related SDGs




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The Best Research Achievement in the last 5 years 【 display / non-display 】

  • 【Published Thesis】 Phylogenetic singnal in the topographic niche of trees: Current and historical significance of habitat structure on the species arrangement pattern within East Asian rugged forests  2020

    【Published Thesis】 Intra-population variation in floral traits of Adonis ramosa (Ranunculaceae)  2020

    【Book】 Transformations of Social-Ecological Systems: Studies in Co-creating Integrated Knowledge Toward Sustainable Futures  2018.12

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Education 【 display / non-display 】

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    1995

    Chiba University   Doctor Course   Completed

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    1987

    Chiba University   Graduated

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Degree 【 display / non-display 】

  • Doctor of Science - Chiba University

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Campus Career 【 display / non-display 】

  • 2017.3
    　
    　

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Natural Environment and Information   Professor  

  • 2009.9
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    2017.2

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Natural Environment and Information   Associate Professor  

  • 2007.10
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    2009.8

    Duty   Yokohama National UniversityResearch Institute of Environment and Information Sciences   Division of Natural Environment and Information   Assistant Professor  

  • 2021.4
    　
    　

    Concurrently   Yokohama National UniversityInterfaculty Graduate School of Innovative and Practical Studies   Professor  

  • 2018.4
    　
    　

    Concurrently   Yokohama National UniversityGraduate School of Environment and Information Sciences   Department of Natural Environment   Professor  

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External Career 【 display / non-display 】

  • 2002.4
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    2003.3

    Tohoku University   Research Assistant  

  • 1997.4
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    2000.3

    Research Fellow of the Japan Society for the Promotion of Science (PD)   Special researcher of the Japan Society for the Promotion of Science  

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Academic Society Affiliations 【 display / non-display 】

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    日本生態学会

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    アメリカ生態学会

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    日本森林学会

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Research Areas 【 display / non-display 】

  • Life Science / Ecology and environment

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Research Career 【 display / non-display 】

  • 樹木における萌芽再生のための資源貯蔵

    Project Year：

  • 降雨に含まれる窒素が樹木の成長に及ぼす影響、およびその緩和方法の検討

    Project Year：

  • 湿潤変動帯に特異的な植生構造とその動態および地史的・進化的背景

    Grant-in-Aid for Scientific Research  

    Project Year：

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Books 【 display / non-display 】

  • 都市科学事典

    佐土原聡ほか348名（含 酒井暁子）（ Role： Contributor ,  国連ミレニアム生態系評価）

    春風社  （ ISBN:978-4-86110-734-4 ）

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    Total pages：1026   Responsible for pages：552-553   Language：Japanese Book type：Dictionary, encyclopedia

  • Transformations of Social-Ecological Systems: Studies in Co-creating Integrated Knowledge Toward Sustainable Futures

    Sato, T., Chabay, I., Helgeson, J. eds.（ Role： Contributor ,  Internatinal Systems Deployed at the Local Level: UNESCO's Man the Biosphere Programme in Japan）

    Springer  （ ISBN:978-981-13-2326-3 ）

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    Total pages：430   Responsible for pages：251-266   Language：English Book type：Scholarly book

  • 地域環境学　トランスディシプリナリー・サイエンスへの挑戦

    佐藤哲・菊地直樹編（ Role： Contributor ,  地域に生かす国際的な仕組みーユネスコMAB計画）

    東京大学出版会 

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    Total pages：430   Responsible for pages：245-258   Language：Japanese Book type：Scholarly book

  • Why do we protect the ecosystems?

    Sakai, A.（ Role： Sole author）

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    Language：English Book type：Scholarly book

  • 生物圏保存地域（ユネスコエコパーク）：人間と自然の共生を目指すモデル

    酒井暁子（ Role： Sole author）

    地球環境学辞典,共立出版 

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    Language：Japanese Book type：Audio (voice)

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Papers 【 display / non-display 】

  • Evaluating the soil microbe community-level physiological profile using EcoPlate and soil properties at 33 forest sites across Japan

    Nakamura Masahiro, Terada Chisato, Ito Kinya, Matsui Kazuaki, Niwa Shigeru, Ishihara Masae, Kenta T … Show more authors

    ECOLOGICAL RESEARCH   37 ( 3 )   432 - 445   2022.2

    DOI Web of Science

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Joint Work  

  • Phylogenetic signal in the topographic niche of trees: Current and historical significance of habitat structure on the species arrangement pattern within East Asian rugged forests

    Kitagawa Ryo, Mimura Makiko, Mori Akira S., Sakai Akiko

    ECOLOGICAL RESEARCH   35 ( 4 )   613 - 624   2020.7

    DOI Web of Science

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Joint Work  

  • Intra-population variation in floral traits of Adonis ramosa (Ranunculaceae)

    Nanami KONDO, Hirofumi KONDO, and Akiko SAKAI

    Nature of Tadami, Bulletin of the Tadami Beech Center   8 (in press)   2020  [Reviewed]

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Joint Work  

    Variation in flower traits within a population and its factors were investigated using Adonis ramosa, focusing on (1) differences in the amount of resources possessed by individuals and (2) differences in flowering days. The survey was conducted in a population located in Tadami Town. Plant size, number of petals, number of stamens, number of ovules,three kinds of flower area size, male fitness (number of stamens x freqency of insect visit), and female fitness (number of mature seeds) were recorded for 84 flowers of 71 individuals. (1) The bigger individuals had larger flowers with more stamens and ovules. Of the flower area sizes, the display size was related to the male fitness and the size of petals overlap area was related to the male and female fitness. (2) As a result of comparison of individuals in which only one flower was produced in either the first or second half of the flowering period of the population, excluding the effect of individual size, the first flowering group had many stamens and ovules, but the number of insect visits and the fertility rate were higher in the late flowering group. Since A. ramosa has only a few flowers, the flower traits are adjusted at the individual flower level to increase fitness. In addition, the flowering day and the amount of resources that can be allocated to reproduction differ among individuals due to differences in the environment and other factors. These factors may contribute the intra-population variation in flower traits, which observed in the A. ramosa population.

  • Phylogenetic singnal in the topographic niche of trees: Current and historical significance of habitat structure on the species arrangement pattern within East Asian rugged forests

    KITAGAWA Ryo, MIMURA Makiko, MORI Akira S., and SAKAI Akiko

    Ecological Research   (in press)   2020  [Reviewed]

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    Language：English   Publishing type：Research paper (scientific journal)   Joint Work  

    Topography often promotes habitat heterogeneity and is a major factor in fine-grained changes in vegetation. Especially in temperate mountainous regions of East Asia, the distribution of tree species is largely explained by topographic niche differentiation. Because species niche is at least partially a historical product through the evolution of functional traits, phylogenetic signals are expected in the topographic arrangement pattern of species, although this has not been fully investigated. Thus, we examined common temperate trees in a 306 ha watershed on Mt Tanzawa, central Japan. The topographic niche position of each species was explained with two principle component analysis (PCA) axes, which aligned with the topographic structure of the watershed. High scores on PC1 reflected lower elevations, steeper slopes, and nearby valleys. Higher scores on PC2 indicated thicker soil, more south-facing slopes, slighter slope inclinations, and nearby valleys. The former indicated the species were aligned on a habitat gradient of land-surface instability, for which the gradient is typical under the current geological conditions. The latter indicated that a niche axis for resource availability relating to water, nutrients, and light or heat existed. A phylogenetic signal, identified by Pagel’s λ and the Mantel test, was detected for PC2 scores. However, the species arrangement along PC1 was independent of phylogeny. Our results suggested that the topographic niche of tree species in this area is caused by both relatively recently derived traits regarding adaptation to unstable land surfaces and conservative traits derived through plant evolution.

  • フクジュソウの花形質の集団内変異とその要因

    酒井 暁子

    只見の自然 只見町ブナセンター紀要   8   2 - 12   2020  [Reviewed]

    CiNii Research

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    Language：The in addition, foreign language   Publishing type：Research paper (scientific journal)   Single Work  

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Review Papers 【 display / non-display 】

  • 持続可能性科学の可能性としてのユネスコエコパーク （特集「自然と共生するまちづくり ユネスコエコパーク ）

    酒井暁子

    地理   773   46 - 53   2019.10

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Single Work  

  • Biosphere Reserve as an effective institution for realizing sustainable society

    Akiko Sakai, Hiroyuki Matsuda

    Japanese Journal of Ecology   66 ( 1 )   119 - 120   2016.6  [Reviewed]  [Invited]

    DOI

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：The Ecological Society of Japan   Joint Work  

    As the persons in charge of planning for the special feature, he explained the MAB system and its background, introduced the purpose of the special feature, and the thesis to be composed.As the persons in charge of planning for the special feature, he explained the MAB system and its background, introduced the purpose of the special feature, and the thesis to be composed.

  • ユネスコエコパークへの道（特集「対馬モデルへ 域学連携のエコアイランド構想 対馬モデル１生物多様性の島」）

    酒井暁子

    BIOCITY   ( 58 )   22 - 30   2014

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Single Work  

  • 特集「ユネスコMAB（人間と生物圏）計画ー日本発ユネスコエコパーク制度の構築に向けて」：趣旨説明

    松田裕之・酒井暁子・若松伸彦

    日本生態学会誌   ( 62 )   361 - 364   2012

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    Language：Japanese   Publishing type：Other   Joint Work  

  • 創造力と論理的思考力を磨く（特集：編集委員が選んだ新入生に薦める100冊）

    酒井暁子

    生物科学   ( 62 )   52   2010

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    Language：Japanese   Publishing type：Other   Single Work  

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • 生物多様性に関わる国際認定制度を活用した地方自治体の戦略の定量的比較分析

    2014.4 - 2017.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s)：香坂　玲

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    Grant type：Competitive

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Other external funds procured 【 display / non-display 】

  • 多雪地域におけるブナの個体間・個体内での開葉フェノロジー

    2019.4 - 2020.3

    Local Government  H31年度「自然首都・只見」学術調査研究助成金

    Investigator(s)：西坂志帆

  • ブナの葉は尾根と谷で異なるのか？ー局所スケールにおける樹木形質の変異ー

    2017.4 - 2018.3

    Local Government  H29年度「自然首都・只見」学術調査研究助成金

    Investigator(s)：後藤亮仁

  • ユネスコエコパークネットワーク活動の促進

    2015.4 - 2016.3

    Private Foundations  自然保護助成基金（国際的な自然環境保全プログラムの助成）

  • 虫媒花植物における花形質の変異性の適応的意義ーフクジュソウの花弁数はなぜ花によって異なるのか

    2015.4 - 2016.3

    Local Government  H27年度「自然首都・只見」学術調査研究助成金

    Investigator(s)：近藤博史

  • 世界遺産とユネスコエコパークを例にした自然保護の世界標準と地域振興の衝突事例の比較と解決策の研究

    2014.4 - 2017.3

    Private Foundations  三井物産環境基金研究助成

    Investigator(s)：酒井暁子

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Presentations 【 display / non-display 】

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Past of Collaboration and Commissioned Research 【 display / non-display 】

  • Sprouting strategies of tree plants

    Project Year：  -   

  • Altitudinal Changes of growth and reproduction in woody plants

    Project Year：  -   

  • Theoretical analyses of Sex allocation of plants

    Project Year：  -   

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Charge of on-campus class subject 【 display / non-display 】

  • 2024   Nature-oriented sustainable society with Biosphere Reserve and other frames

    Graduate School of Environment and Information Sciences

  • 2024   Ecology: Evolution and Environmental Adaptation

    Graduate School of Environment and Information Sciences

  • 2024   Literacy for Environment and Information Science VI Technique of Earth & Ecological Sciences

    Graduate School of Environment and Information Sciences

  • 2024   Field Work for Ecology

    College of Urban Sciences

  • 2024   Population Biology and Evolutionary Ecology 2

    College of Urban Sciences

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Committee Memberships 【 display / non-display 】

  • 相模原市土地利用審査会

    2019.4  委員

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    Committee type：Municipal 

  • 千葉県環境審議会（自然環境部会）

    2017.10  委員

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    Committee type：Municipal 

  • 千葉県環境影響評価審査会

    2016.2  委員

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    Committee type：Municipal 

  • 未来遺産委員会

    2015.6  委員

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    Committee type：Other 

  • 神奈川県環境影響評価審査会

    2014.11  委員

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    Committee type：Municipal 

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Social Contribution(Extension lecture) 【 display / non-display 】

  • Country report: Activities of MAB Japan in the past two years（招待講演）（東アジア７カ国会議）

    East Asian Biosphere Reserves Network 13th Meeting  ウランバートル,モンゴル  2013.10

  • Country Report of Japan: MAB activities for the past two years（招待講演）（東アジア６カ国会議）

    East Asian Biosphere Reserves Network 12th Meeting  シナンダドへ, 韓国  2011.9

  • Country Report of Japan, 「人間と生物圏プログラム」東アジア生物圏保存地域ネットワーク(EABRN) 第11回会議招待講演（東アジア６カ国会議）

    ユネスコ  中華人民共和国 福建省  2009.11

  • Country Report of Japan, 「人間と生物圏プログラム」東南アジア生物圏保存地域ネットワーク(ECOTONE II - SeaBRnet)会議

    ユネスコ  中華人民共和国 貴州省  2007.11

  • 「東北地方のオオシラビソにおける現在、50年前、100年前の成長量：地球温暖化の影響はあらわれているか？」

    2003年度年輪研究会  鳥取  2003.11

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