Organization
Faculty of Environmental Science
Department
School of Environmental Science Department of Ecosystem Studies
Title
Associate Professor
YOSHIYAMA Kohei
Education
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Kyoto University Graduate School, Division of Natural Science
Course completed： Doctor's Course
Country： Japan
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Kyoto University Faculty of Science
Country： Japan
Degree
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博士（理学） ( 2002.3 京都大学 )
Research Field
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theoretical ecology
Research Experience
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The University of Shiga Prefecture School of Environmental Science Department of Ecosystem Studies Associate Professor
2016.10
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The University of Shiga Prefecture School of Environmental Science Department of Ecosystem Studies Assistant Professor
2015.10 - 2016.9
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岐阜大学 流域圏科学研究センター 助教
2011.5 - 2015.9
Country：Japan
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東京大学 大気海洋研究所 研究員
2008.9 - 2011.4
Country：Japan
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ミシガン州立大学 ケロッグ生物学研究所 研究員
2006.5 - 2008.8
Country：United States
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京都大学 生態学研究センター 非常勤講師
2005.4 - 2006.4
Country：Japan
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デラウェア大学 海洋研究所 研究員
2002.5 - 2005.3
Country：United States
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京都大学 生態学研究センター 研修員
2002.4 - 2002.5
Country：Japan
Association Memberships
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日本陸水学会
2009.9
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アメリカ生態学会
2007.6
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アメリカ陸水海洋学会
2007.2
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日本数理生物学会
2006.9
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日本生態学会
1997.3
Research Areas
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Life Science / Ecology and environment
Committee Memberships
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日本陸水学会評議員
2020.1 - 2021.12
Committee type：Academic society
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Managing Editor of Limnology
2019.1 - 2021.12
Committee type：Academic society
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Secretary of Japanese Society of Limnology
2017.1 - 2018.12
Committee type：Academic society
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Frontier in Ecology and Evolution査読編集委員
2013.4
Committee type：Academic society
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Limnology誌編集委員
2012.4 - 2016.12
Committee type：Academic society
Papers
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Enhancement of β-glucan production in two Arthrospira species cultivating in anaerobic digestion effluent of water hyacinth Reviewed International coauthorship
Most Fahima Ahmed Anny, Taiabur Rahman Tuhin, Xin Liu, Kohei Yoshiyama, Shin-ichi Akizuki, Tatsuki Toda, Syuhei Ban
Biochemical Engineering Journal 203 2024.3
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Feeding of mussel-associated leeches Hemiclepsis kasmiana on bitterling embryos: Novel interaction between parasites in a shared host Reviewed
Daiki Nishino, Takayoshi Nishida, Kohei Yoshiyama
Journal of Fish Biology 103 ( 5 ) 1232 - 1236 2023.11
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琵琶湖岸の希少植物タチスズシロソウ―環境要因が個体数に与える影響― Invited
吉山浩平, 小野夏実, 宮村 弘, 河邊 昭, 原田英美子
金属 92 73 - 80 2022
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琵琶湖における全循環の数 値シミュレーションと気候変動の関係
吉田毅郎, 北澤大輔, 周金鑫, 朴相圭, 久保英也, 菊池健太郎, 吉山浩平
生産研究 70 ( 1 ) 25 - 28 2018
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Prediction of the influence of climate change on overturn in Lake Biwa for risk assessment
Takero Yoshida, Daisuke Kitazawa, Hideya Kubo, Kentaro Kikuchi, Kohei Yoshiyama
Proceedings of the 8th East Asian Workshop for Marine Environment and Energy 355 - 360 2017
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Indonesian farmers’ perception of climate change: case study in Karanganyar Regency, Central Java Province, Indonesia. Reviewed
Zuhud Rozaki, Widyatmani Sih Dewi, Kohei Yoshiyama, Kengo Ito, Masateru Senge
Journal of Rural Planning 36 ( 1 ) 59 - 66 2017
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Feasibility and adoption of rainwater harvesting by farmers Reviewed
Z. Rozaki, M. Senge, K. Yoshiyama
Reviews in Agricultural Science 2017
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The optimization principle of storage capacity of small-farm reservoir in rainfed agriculture. Reviewed
Dwi Priyo Ariyanto,Kohei Yoshiyama, Zuhud Rozaki, Masateru Senge, Komariah
Journal of Rainwater Catchment Systems 22 ( 1 ) 2016.7
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Influencing factors, effects and development prospect of soil solarization Reviewed
Yanyan Dai, Masteru Senge,Kohei Yoshiyama,Pengfei Zhang,Fuping Zhang
Reviews in Agricultural Science 4 21 - 35 2016.6
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Small-farm reservoir contribution to annual crop cultivation in rainfed paddy field under tropical monsoon climate Reviewed
Dwi Priyo Ariyanto, Komariah, Kohei Yoshiyama, Ken Hiramatsu, Kengo Ito, Takeo Onishi, Masateru Senge
Journal of Rainwater Catchment Systems 21 ( 2 ) 2016.2
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The impacts of decreasing paddy field area on local climate in Central Java, Indonesia Reviewed International journal
Komariah, Masateru Senge, Sumani, Widyatmani Sih Dewi, Kohei Yoshiyama, Arief Noor Rachmadiyanto
Air, Soil and Water Research 8 77 - 85 2015.12
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Atmospheric conditions, landscape characteristics, and anthropogenic factors affecting stream water temperature: a review Reviewed
Weijun Wu, Kohei Yoshiyama, Masateru Senge
Reviews in Agricultural Science 3 46 - 53 2015.10
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Present and predictive states of water resources at groundwater-dependent agricultural and pastoral zone: a case study at Dalad, Inner Mongolia Reviewed
Badarifu, Mendbayar, Ken Hiramatsu, Takeo Onishi, Kohei Yoshiyama
Journal of Rainwater Catchment Systems 21 ( 1 ) 7 - 14 2015.7
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Genetic diversity of medaka (Oryzias latipes) in paddy field water channels: a case study using microsatellite markers in Wanouchi Town, Gifu Prefecture Reviewed
M.S.A. Mamun, S. Sato, K. Yoshiyama, K. Tsuchida, A. Iwasawa, K. Hiramatsu, S. Nishimura
IDRE Journal 83 ( 3 ) 99 - 106 2015.6
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Experimental evaluation of irrigation methods for soil desalinization Reviewed
Yanyan Dai, Masateru Senge, Kengo Ito, Takeo Onishi, Kohei Yoshiyama
Paddy and Water Environment 13 159 - 165 2015.4
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Trehalose accumulation enhances tolerance of Saccharomyces cerevisiae to acetic acid Reviewed
Yoko Yoshiyama, Koichi Tanaka, Kohei Yoshiyama, Makoto Hibi, Jun Ogawa, Jun Shima
Journal of Bioscience and Bioengineering 119 ( 2 ) 172 - 175 2015.2
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Study on irrigation water requirements for the control of Ralstonia solanacearum via soil solarization in managing tomato cultivation Reviewed
Yanyan Dai, Mima Kondoh, Kengo Ito, Kohei Yoshiyama, Pengfei Zhang, Fuping Zhang, Masateru Senge
IDRE Journal 82 ( 6 ) 433 - 440 2014.12
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Tensile strain measurement using plate specimen in cohesive soil Reviewed
Shin-ichi Nishimura, Ken Hiramatsu, Takeo Onishi, Kohei Yoshiyama
IDRE Journal 81 ( 4 ) 95 - 101 2013.8
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Dynamics of phytoplankton communities under photoinhibition Reviewed
Sze-Bi Hsu, Chiu-Ju Lin, Chin-Hao Hsieh, Kohei Yoshiyama
Bulletin of Mathematical Biology 75 ( 7 ) 1207 - 1232 2013.7
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Experimental test of phytoplankton competition for nutrients and light in poorly mixed water columns Reviewed
J.P. Mellard, K. Yoshiyama, C.A. Klausmeier, E. Litchman
Ecological Monographs 82 ( 2 ) 239 - 256 2012.5
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Cascading effects of larval crucian carp introduction on phytoplankton and microbial communities in a paddy field: top-down and bottom-up controls Reviewed
Y. Nishimura, T. Ohtuka, K. Yoshiyama, D. Nakai, F. Shibahara, M. Maehata
Ecological Research 26 ( 3 ) 615 - 626 2011.5
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Eco-evolutionary differences in light utilization traits help explain phytoplankton distribution patterns Reviewed
A. S. Schwaderer, K. Yoshiyama, P. de T. Pinto, N. G. Swenson, C. A. Klausmeier, E. Litchman
Limnology and Oceanography 56 ( 2 ) 589 - 598 2011.3
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The vertical distribution of phytoplankton in stratified water columns Reviewed
J.P. Mellard, K. Yoshiyama, C.A. Klausmeier, E. Litchman
Journal of Theoretical Biology 269 ( 1 ) 16 - 30 2011.1
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Vulnerability of a large monomictic lake (Lake Biwa) to warm winter event Reviewed
C Yoshimizu, K Yoshiyama, I Tayasu, T Koitabashi, T Nagata
Limnology and Oceanography 11 ( 3 ) 233 - 239 2010.12
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Linking traits to species diversity and community structure in phytoplankton Reviewed International journal
E. Litchman, C. A. Klausmeier, P. de Tezanos Pinto, M. K. Thomas, K. Yoshiyama
Hydrobiologia 653 ( 1 ) 15 - 38 2010.10
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Cell size as a master trait of microorganisms: emerging trade-off and community structure
Kohei Yoshiyama
RIMS Kokyuroku 1704 111 - 114 2010.8
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A biogeochemical view of estuarine eutrophication: lessons from seasonal and spatial trends and correlations in the Delaware estuary Reviewed International journal
J H Sharp, K Yoshiyama, A E Parker, M C Schwartz, S E Curless, A Y Beauregard, J E Ossolinski, A R Davis
Estuaries and Coasts 32 ( 6 ) 1023 - 1043 2009.11
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Phytoplankton competition for nutrients and light in a stratified water column Reviewed International journal
Kohei Yoshiyama, Jarad P Mellard, Elena Litchman, Christopher A Klausmeier
American Naturalist 174 ( 2 ) 190 - 203 2009.8
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Contrasting size evolution in marine and freshwater diatoms Reviewed International journal
Elena Litchman, Christopher A Klausmeier, Kohei Yoshiyama
Proceedings of the National Academy of Sciences of the United States of America 106 ( 8 ) 2665 - 2670 2009.2
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A new theory that fills the missing link between sizes of unicellular organisms and their resource molecules
Kohei Yoshiyama
RIMS Kokyuroku 1597 181 - 184 2008.5
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Optimal cell size for resource uptake in fluids: a new facet of resource competition Reviewed International journal
Kohei Yoshiyama, Christopher A Klausmeier
American Naturalist 171 ( 1 ) 59 - 70 2008.1
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Catastrophic shifts in vertical distributions of phytoplankton: the existence of a bifurcation set Reviewed International journal
Kohei Yoshiyama, Hisao Nakajima
Journal of Mathematical Biology 52 ( 2 ) 235 - 276 2006.2
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Phytoplankton response to nutrient enrichment in an urbanized estuary: apparent inhibition of primary productivity by over-eutrophication Reviewed International journal
Kohei Yoshiyama, Jonathan H Sharp
Limnology and Oceanography 51 ( 1 ) 424 - 434 2006.1
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Catastrophic transition in vertical distributions of phytoplankton: alternative equilibria in a water column Reviewed International journal
Kohei Yoshiyama, Hisao Nakajima
Journal of Theoretical Biology 216 ( 4 ) 397 - 408 2002.6
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Nutrient modeling: light-nutrient balance mechanism for algal blooms and vertical patterns of phytoplankton Reviewed International journal
Kohei Yoshiyama, Masahiko Higashi
DIWPA Series: Proceedings of International Workshop on Sustainable Watershed 5 11 - 18 2002
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A model of autumn algal blooms: the effect of deepening seasonal thermocline Reviewed International journal
Kohei Yoshiyama
Verhandlunge der Internationalen Vereinigung fur Theoretische und Angewandte Limnologie 28 ( 2 ) 1006 - 1009 2002
Books etc
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Encyclopedia of Global Warming
Kohei Yoshiyama（ Role： Contributor）
Maruzen 2014.3 （ ISBN:978-4621086605 ）
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Climate Change and Global Warming of Inland Waters
Kohei Yoshiyama（ Role： Contributor）
Wiley-Blackwell 2013.1 （ ISBN:978-1119968665 ）
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Inventions and Discoveries of the Century
Kohei Yoshiyama（ Role： Contributor）
Mirai 2012.3 （ ISBN:978-4860152659 ）
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The Limnology of Global Warming
Toshi Nagata, Michio Kumagai, Kohei Yoshiyama（ Role： Joint editor）
Kyoto University Press 2012.2 （ ISBN:978-4876985906 ）
MISC
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書評: 島田正志[著]「水理学 流れ学の基礎と応用」 Invited
吉山浩平
日本陸水学会誌 69 269 - 269 2008
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植物プランクトンの鉛直分布パターンにおける双安定性, カタストロフ Invited
吉山浩平
京都大学センターニュー ス 89 21 - 22 2006
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書評: T. アンダーセン, 山本民次訳「水圏生態系の物質循環」 Invited
吉山浩平
日本数理生物学会ニュースレ ター 50 7 - 7 2006
Awards
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Certificate of Excellence in Reviewing 2013
2014.6 Elsevier B. V.
Kohei Yoshiyama
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平成24年度日本陸水学会吉村賞
2012.9 日本陸水学会
由水千景他
Research Projects
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Re-examination of competitive exclusion principle: effect of sex on Paramecium experiments by Gause
Grant number：20K06830 2020.4 - 2023.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Grant amount：\3380000 （ Direct Cost: \2600000 、 Indirect Cost：\780000 ）
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競争排除則の再検証．Gauseのゾウリムシ類実験における性の影響
2020.4 - 2023.3
基盤研究(C)
高倉耕一
Grant amount：\1800000 （ Direct Cost: \100000 、 Indirect Cost：\1700000 ）
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Elucidation of the significance of cyanobacterial circudian clook in aquatic ecosystems
Grant number：18K05797 2018.4 - 2023.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）
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Quantification of periphyton community structure through pigment analysis
Grant number：17K00649 2017.4 - 2020.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
YOSHIYAMA KOHEI
Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）
Field surveys were conducted in Inukami River, Shiga in summer and in winter. Periphyton samples were collected from rock surface and sediments at the riverbed of 6 sampling stations, 3 upstream and 3 downstream from the Inukami Dam. Diatoms were counted after cleaning by acid. Pigments per area were quantified by HPLC. The results indicated that diatoms were predominant in the periphyton community in the upper reaches, while green algae and cyanobacteria were absent. Toward the lower reaches, the contribution of cyanobacteria increased according to the pigment composition. Achnanthidium spp., Cocconeis spp., and Gomphonema spp. dominated in the upper reaches. Cocconeis spp. were particularly dominant in the sediment samples. Encynema spp. were dominant in lower reaches. While single celled species, such as Navicula spp.，were observed in the upper reaches, colony-forming species such as Nitzschia spp. and Ulnaria spp. dominated in the lower reaches.
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付着藻類群集構造の色素分析による定量化とその変動要因の解明
2017.4 - 2020.3
基盤研究(C)
Grant amount：\4680000 （ Direct Cost: \3000000 、 Indirect Cost：\1680000 ）
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Characteristics of denitrification in paddy and drainage channel and its control
Grant number：15H04567 2015.4 - 2020.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
HIRAMATSU Ken
Grant amount：\17680000 （ Direct Cost: \13600000 、 Indirect Cost：\4080000 ）
The characteristics of denitrification in paddy and agricultural drainage channel ware investigated. Nitrogen is released from the channel as much as tidal lands known as active denitrification and the contribution to natural purification of water is recognized. In the paddy we tried to control the activation of denitrification by controlling redox using microbial fuel cell application. The emission of dinitrogen monoxide from the pot with the circuit under acetylene inhibition method decreases by 65% compared with non-circuit one. On the other hand, remarkable effect was not found when introducing external voltage to enhance the control ability, because the effect on redox spread only near the electrode.
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水田と農業排水路における脱窒特性と物理化学的制御
2015.4 - 2020.3
科学研究費補助金 基盤 B
平松研
Grant amount：\300000 （ Direct Cost: \300000 ）
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Linking life phenomena to theoretical study from Antarctic lake ecosystem
Grant number：26310213 2014.7 - 2017.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Tanabe Yukiko
Grant amount：\14820000 （ Direct Cost: \11400000 、 Indirect Cost：\3420000 ）
The following mathematical models 1)-3) were represented based on data analyzed environmental parameters and benthic community samples in Antarctic lakes.
1) "Modeling photo-chemical reaction": Photosynthetic reaction center of photo-trophs was represented as three-state model, and optimum strategy of light utility was evaluated responding to light wavelength, then the respondence mechanism of photo-trophs was explained theoretically. 2) "Modeling developing process of vertical community structure": Productivity of photo-trophs was evaluated under vertical-space structure, and the formation process of vertical community structure was modeled. 3) "Modeling formation process of vertical pigment pattern": The formation process of vertical pigment pattern which the actual photo-trophs possesses was modeled by responding to incident light spectra to the actual lakebeds. -
南極湖沼生態系からつなげる生命現象と理論
2014.4 - 2016.3
科学研究費補助金 基盤 B
田邊優貴子
Grant amount：\60000 （ Direct Cost: \60000 ）
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Emergence of vertical distribution and diversity of algae: competition for light and nutrients along one dimensional space
Grant number：25840155 2013.4 - 2016.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
Yoshiyama Kohei
Grant amount：\1300000 （ Direct Cost: \1000000 、 Indirect Cost：\300000 ）
Light and nutrients are the essential resources for algal growth. The unidirectional supply of light, combined with self-shading and nutrient consumption, creates opposing vertical gradients of the two essential resources. I investigated vertical pattern formation of phytoplankton and an algal mat. The theoretical results include diversification of phytoplankton light-nutrient competitive traits through light-nutrient competition, and vertical segregation of species through self-organization of an algal mat via light competition. I also investigated the vertical distribution and community composition of phytoplankton species in Michigan lakes through the analysis of data on vertical distributions of phytoplankton species, light, nutrients, and turbulence.
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Development and sensitivity analysis of integrated aquatic model of the Ise Bay catchment
Grant number：25450499 2013.4 - 2016.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Onishi Takeo, HIRAMATSU Ken, YOSHINO Jun, SOMURA Hiroaki, SUGIMOTO Ryo, YOSHIYAMA Kohei, KAKEI Shigeho
Grant amount：\5330000 （ Direct Cost: \4100000 、 Indirect Cost：\1230000 ）
The Ise Bay is receiving large amount of freshwater from seven rivers such as Kiso three rivers. Thus, various human activities on the terrestrial area have a large impacts both on the amount and quality of river waters, consequently will affect on the conditions of the Ise Bay. Though the concept of integrative water management of lands and oceans is proposed more than a decade ago, it is necessary to accumulate many scientific knowledge for the actual implementation of this concept. Thus, in this research, we attempted to construct integrative water and material flow model for lands and oceans. As a result, importance of material flow during the period of rainfall events are clarified. And, it is cleared that accurate quantification of water quality during the short period in rainfall events are important.
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伊勢湾流域圏を対象とした水系総合モデルの開発と感度解析
2013.4 - 2016.3
科学研究費補助金 基盤C
大西健夫
Grant amount：\80000 （ Direct Cost: \80000 ）
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藻類の鉛直分布構造と多様性の創出：光と栄養塩を巡る空間競争
2013.4 - 2015.3
科学研究費補助金 若手B
吉山浩平
Grant amount：\1000000 （ Direct Cost: \1000000 ）
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湖における微生物サイズ分布動態の解析とその進化適応動態理論の構築
2010.4 - 2012.3
科学研究費補助金 若手B
吉山浩平
Grant amount：\1700000 （ Direct Cost: \1700000 ）
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水中および底泥での貧酸素化進行過程における細菌群集動態の解明: 伊勢湾および東京湾の生物多様性回復に関する基礎研究
2008.4 - 2009.3
日本生命財団研究助成
西村洋子
Grant amount：\800000 （ Direct Cost: \800000 ）
Presentations
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カイビルがアブラボテの二枚貝選好性に与える影響
西野大輝, 吉山浩平
日本生態学会第70回全国大会 2023.3 日本生態学会
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オオバコ属2種のすみわけ要因
小林大輝, 吉山浩平, 西田隆義
日本生態学会第70回全国大会 2023.3 日本生態学会
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河川付着藻類群集の色素分析による定量化とその変動要因
西村洋子, 吉山浩平, 打越崇子, 大塚泰介, 泉野央樹, 木本裕也, 丸尾雅啓
日本陸水学会第85回大会 2021.9 日本陸水学会