Keita Nishizawa, Ph.D, (西澤 啓太)

I am a postdoctoral researcher at Akira Mori’s lab. My major is plant community ecology and main interest is the assembly mechanisms of plant community. I was mainly working on assembly rules for local scales during the graduate school. Recently, I have been interested in scaling up the rules of local assembly to a global scale, and I am particularly interested in patterns in the Arctic.

with Prof. Hubbell

Positions

2020 – Present, Postdoctoral Fellow, Yokohama National University

Educations

2020, Ph.D., Graduate School of Environment and Information Sciences, 

          Yokohama National University (A. Mori’s lab)

2017, M.S., Graduate School of Environment and Information Sciences, 

          Yokohama National University (A. Mori’s lab)

2015, B.S.,
Graduate School of Environment and Information Sciences, 

          Yokohama National University (A. Mori’s lab)

Grants

2021-2023, ArCS Ⅱ Complementary Research Projects (K. Nishizawa, et al.)

2018, ArCS Overseas Fellowship Program (K. Nishizawa)

2017-2020,  Research Fellow of the Japan Society for the Promotion of Science (DC1)

2017, ArCS Overseas Fellowship Program (K. Nishizawa)

2016-2018, Pro Natura Fund Grant (A. Mori, K. Nishizawa, et al.)


Awards

2021, Excellent Poster Award (Wakatsuki, Nishizawa and Mori), Ecological Society of Japan

2017, Repayment Exemption for Outstanding Achievements (Japan Student Services Organization) 

2017, Change the world 2017 (Nishizawa et al. 2016), Springer Nature
 

2017, Ecological Research Award 2016 (Nishizawa et al. 2016), Ecological Society of Japan

2016, Excellent Poster Award (Nishizawa et al.), Ecological Society of Japan

Publications

Wakatsuki Y, Nishizawa K, Mori AS (2021) Leaf trait variability explains how plant community composition changes under the intense pressure of deer herbivory. Ecological Research : in press.


Nishizawa K, Deschamps L, Maire V, Bêty J, Lévesque E, Kitagawa R, Masumoto S, Gosselin I, Morneault A, Rochefort L, Gauthier G, Tanabe Y, Uchida M, Mori AS (2021) Long-term consequences of goose exclusion on nutrient cycles and plant communities in the High-Arctic. Polar Science 24: in press.

Matsuoka S, Doi H, Masumoto S, Kitagawa R, Nishizawa K, Tanaka K, Hasegawa M, Hobara S, Osono T, Mori AS, Uchida M (2021) Taxonomic, functional, and phylogenetic diversity of fungi in a forest-tundra ecotone in Quebec. Polar Science 24: in press.


Masumoto S, Kitagawa R, Nishizawa K, Osono T, Hasegawa M, Imura Y, Matsuoka S, Kaneko R, Uchida M, Mori AS (2021) Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem. Polar Science 24: in press.

Kitagawa R, Masumoto S, Nishizawa K, Kaneko R, Osono T, Hasegawa M, Uchida M, Mori AS (2019) Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone. J. Veg. Sci. 

Nishizawa K, Mori AS (2018) Forest ecosystem management for biodiversity conservation: a focus on the possible roles of deer hervivory as a natural disturbance. Annual Report of Pro Natura Foundation Japan 27 (in Japanese with English abstract)

Stephan J G, Pourazari F, Tattersdill K, Kobayashi T, Nishizawa K, De Long J R (2017) Long-term deer exclosure alters soil properties, plant traits, understory plant community and insect herbivory, but not the functional relationships among them. Oecologia 184.3: 685-699.

Nishizawa K, Tatsumi S, Kitagawa R, Mori AS (2016) Deer herbivory affects the functional diversity of forest floor plants via changes in competition-mediated assembly rules. Ecol Res 31:569-578. doi: 10.1007/s11284-016-1367-6, PDF

Presentations

English

Keita Nishizawa, Lucas Deschamps, Vincent Maire, Joël Bêty,  Esther Lévesque, Ryo Kitagawa, Shota Masumoto, YukikoTanabe, Masaki Uchida, Akira S.Mori, The ecological consequences of herbivore disappearance in the Arctic ecosystems, the comparison of active and passive exclusion (Les conséquences écologiques de la disparition des herbivores dans les écosystèmes arctiques, la comparaison entre l’exclusion active et passive), CEN's Annual Symposium, Montreal (Canada), February, 2020, (Poster)

Ryo Kitagawa, Shota Masumoto, Keita Nishizawa, Ryo Kaneko, Takashi Osono, Motohiro Hasegawa, Masaki Uchida, Akira S Mori,  Positive interaction facilitates landscape homogenization by shrub expansion in the forest–tundra ecotone (Une interaction positive facilite l'homogénéisation du paysage par l'expansion des arbustes dans l'écotone forêt-toundra), CEN's Annual Symposium, Montreal (Canada), February, 2020, (Poster)

Keita Nishizawa, Ryo Kitagawa, Shota Masumoto, Akira Mori, Reinterpreting the role of neutrality in community assembly from the Tundra plant community in northern Canada (カナダ北極域のツンドラ群集から考える植物群集集合における中立性),  The 66th annual meeting of the Ecological Society of Japan, P2-330, Kobe, Japan (Oral), (第 66 回日本生態学会, P2-330, 神戸, 2019年3月 (口頭))

Masumoto Shota, Ryo Kitagawa, Ryo Kaneko, Keita Nishizawa, Yasuo Iimura, Takashi Osono, Motohiro Hasegawa, Masaki Uchida, Akira Mori, Effect of plant community structure on soil respiration of tundra ecosystem through multiple ecosystem functions in Canadian Arctic, 14th ArcticNet Annual Scientific Meeting 2018, Ottawa (Canada) December 2018, December, 2018, (Oral)


Ryo Kitagawa, Ryo Kaneko, Motohiro Hasegawa, Shunsuke Matsuoka, Shota Masumoto, Keita Nishizawa, Takashi Oosono, Masaki Uchida, Akira Mori, Change in multi-taxa communities along a environmental gradient in the Canadian subarctic tundra, 14th ArcticNet Annual Scientific Meeting 2018, Ottawa (Canada) December 2018, December, 2018, (Oral)


Takashi Osono, Shota Masumoto, Ryo Kitagawa, Ryo Kaneko, Keita Nishizawa, Yasuo Iimura, Motohiro Hasegawa, Masaki Uchida, Akira S Mori, Effect of plant community structure on soil respiration of tundra ecosystem through multiple ecosystem functions in Canadian Arctic, 14th ArcticNet Annual Scientific Meeting 2018, Ottawa (Canada) December 2018, December, 2018, (Oral)


Takashi Osono, Ryo Kitagawa, Ryo Kaneko, Motohiro Hasegawa, Shunsuke Matsuoka, Shota Masumoto, Keita Nishizawa, Masaki Uchida, Akira S Mori, Change in multi-taxa communities along a environmental gradient in the Canadian subarctic tundra, 14th ArcticNet Annual Scientific Meeting 2018, Ottawa (Canada) December 2018, December, 2018, (Oral)


Ryo Kaneko, Ryo Kiatagawa, Keita Nishizawa, Shota Masumoto, Akira Mori, Jun Uetake, Masaharu Tsuji, Masaki Uchida, Soil bacterial communities and environments in the Canadian subarctic tundra, The 9th Symposium on Polar Science, Tachikawa (Japan), December, 2018, (Poster)


Takashi Osono, Kaho Tanaka, Shunsuke Matsuoka, Ryo Kitagawa, Shota Masumoto, Keita Nishizawa, Motohiro Hasegawa, Masaki Uchida, Akira S Mori, Assessment of fungal diversity on plant litter in a subarctic tundra, The 9th Symposium on Polar Science, Tachikawa (Japan), December, 2018, (Poster)

Keita Nishizawa, Ryo Kitagawa, Shota Masumoto, Masaki Uchida, Akira Mori, The assembly mechanisms of various patchy-tundra community upon the harsh parabolic dune, CEN's Annual Symposium, Sherbrooke (Canada), February, 2018, (Poster)


Shota Masumoto, Ryo Kitagawa, Ryo Kaneko, Keita Nishizawa, Masaki Uchida, Akira Mori, Effect of plant species diversity on tundra ecosystem multifunctionality in Canadian Arctic, The 8th Symposium on Polar Science, Tachikawa (Japan), December, 2017, (Poster)


Ryo Kitagawa, Shota Masumoto, Ryo Kaneko, Keita Nishizawa, Masaki Uchida, Akira Mori, Community assembly rule for tundra vegetation in lower arctic region, The 8th Symposium on Polar Science, Tachikawa (Japan), December, 2017, (Poster)


Keita Nishizawa, Ryo Kitagawa, Shota Masumoto, Masaki Uchida, Akira Mori, The assembly mechanisms of patchy-tundra plant community at the forest-tundra boundary, The 8th Symposium on Polar Science, Tachikawa (Japan), December, 2017, (Oral)
 

Japanese

若月優姫, 西澤啓太, 森章, シカ採食による葉の経済的損失から植生変化のメカニズムをさぐる(Assessing responses of plant community composition to deer herbivory based on leaf carbon economics), 第 68 回日本生態学会, P1-187, 岡山(オンライン), 2021年3月 (ポスター)

西澤啓太, 群集集合過程における分散能力の中立性 (The neutrality of the dispersal ability in the community assembly process), 第 67 回日本生態学会, 自由集会 W26-2, 名古屋, 2020年3月 (口頭)

若月優姫, 西澤啓太, 森章, シカの採食撹乱に対する林床植物群集の応答 ~個葉の炭素収支からの評価~ (Assessing responses of plant community composition to deer herbivory based on leaf carbon economics), 第 67 回日本生態学会, P1-PC-358, 名古屋, 2020年3月 (ポスター)

有働沙也佳, Forest Isbell, 藤井佐織, 小林真, 西澤啓太, 岡田慶一, 森章, 森林生態系における植物多様性と多機能性の時空間変動, 第 66 回日本生態学会, P2-330, 神戸, 2019年3月 (ポスター)

若月優姫, 西澤啓太, 森章, 葉の資源投資戦略から見るシカ採食下の植物群集組成の変化 (Leaf economic spectrum explains how plant community composition can change under the intense pressure of deer herbivory), 第 66 回日本生態学会, P1-033, 神戸, 2019年3月 (ポスター)

長谷川元洋, 北川涼, 増本翔太, 西澤啓太, 大園享司, 内田雅己, 森章, カナダ東部のツンドラ植生における中型土壌動物群集構造の緯度にともなう変化, 第 66 回日本生態学会, P2-330, 神戸, 2019年3月 (ポスター)

長谷川元洋, 北川涼, 増本翔太, 西澤啓太, 大園享司, 内田雅己, 森章, カナダハドソン湾周辺のツンドラ植生における中型土壌動物群集の構造 -緯度の異なる2地域の比較-, 第41回日本土壌動物学会大会, 京都   2018年5月 (ポスター)

西澤 啓太, 藤井 佐織, 北川 涼, 辰巳 晋一, 森 章, 防鹿柵がもたらす植物群集の機能構造と撹乱後の応答の違い, 第 65 回日本生態学会, P3-001, 札幌, 2018年3月 (ポスター)

長谷川元洋, 北川涼, 増本翔太, 西澤啓太, 大園享司, 内田雅己, 森章, カナダのツンドラ南限付近における中型土壌動物群集の構造と環境要因との関係, 第40回日本土壌動物学会, P-18, 2017年5月(ポスター)

北川涼, 増本翔太, 西澤啓太, 長谷川元洋, 大園享司, 内田雅己, 森章, カナダツンドラの植物群集と規定要因, 第 64 回日本生態学会,  P2-B-032, 東京, 2017 年 3 月(ポスター)


増本翔太, 北川涼, 西澤啓太, 長谷川元洋, 大園享司, 内田雅己, 森章, カナダツンドラにおける植物群落構造が生態系の多機能性に及ぼす影響, 第 64 回日本生態学会,  P2-B-029, 東京, 2017 年 3 月(ポスター)


西澤啓太, 藤井佐織, 北川涼, 辰巳晋一, 森章 プレス型―パルス型撹乱の相互作用が植物群集の再集合に与える影響,  第 64 回日本生態学会,  P2-B-030, 東京, 2017 年 3 月(ポスター)


西澤啓太, 辰巳晋一, 北川涼, 森章, 自然撹乱としてのシカ採食の役割―林床植物の群集集合プロセスからの評価, 第 63 回日本生態学会, P1-006, 仙台, 2016 年 3 月 (ポスター)

Reviews

Journal of Vegetation Science, Ecological Research

This site was designed with the
.com
website builder. Create your website today.
Start Now