大澤 剛士

准教授, 自然環境マネジメント領域

osawa
  • 専門： 生物多様性情報学、保全科学、生態系管理学
  • 学位： 博士（理学）（神戸大学）

自然、半自然環境から得られる様々な「恵み」を生態系サービスと言います。もちろん観光、自然ツーリズムも重要な自然の「恵み」です。そしてこの重要な源泉になっているのが生物多様性です。これら自然資源を適切に管理、保全し、持続的な利用を実現することが研究の目標です。
フィールドは小笠原をはじめとする自然公園から身近な緑地、農地、河川と非常に多岐に渡ります。生物学の一部である生態学を基軸としますが、特定の分野にこだわらず、情報科学、地理学、農学、環境科学等、様々な分野の研究者、実務者と積極的に連携し、基礎科学としても応用科学としても面白い研究を目指しています。この野心的な目標に一緒に挑戦していきましょう。

活動紹介

  • 【Link】 人と自然が共生する未来に向けて養うべきは、多様な視点とバランス感覚

発表論文等

  • Shoya Sasaki, Takeshi Osawa, Influence of Food Resource Availability on the Activity Time of Raccoon Dogs (<i>Nyctereutes procyonoides</i>) in Urban Parks in Tokyo, Ecology and Evolution, Vol. 15, No. 8, 2025.
  • Takeshi Osawa, Gen Sakurai, Atsushi Wakai, Developing national-scale basic guideline on flood-adaptation strategies under climate change using probabilistic and deterministic factors, Water Research, Vol. 282, pp.123723-123723, 2025.
  • Kota Igarashi, Takeshi Osawa, Multiple floods interactions shape riparian plant communities and diversity, Scientific Reports, Vol. 15, No. 1, 2025.
  • Takeshi Osawa, Takaaki Nishida, Takashi Oka, Evaluating the impact of agricultural abandonment on flood mitigation functions, Scientific Reports, Vol. 15, No. 1, 2025.
  • Yuichi Yamaura, Kazuhiro Kawamura, Masayuki Senzaki, Munehiro Kitazawa, Isao Nishiumi, Naoki Katayama, Tatsuya Amano, Yasushi Ishigooka, Shigeto Sudo, Takeshi Osawa, Mutsuyuki Ueta, Range size and abundance dynamics of Japanese breeding birds over 40 years suggest a potential crisis in warm areas, Scientific Reports, Vol. 15, No. 1, 2025.
  • 永井 祥生, 大浦 泰嗣, 大澤 剛士, 都市緑地における樹木3種の微量金属元素吸収能力と大気浄化の可能性, 保全生態学研究, Vol. 30, No. 1, pp.17-26, 2025.
  • 大澤 剛士, 山野 博哉, 小笠原 奨悟, 土地利用基本計画から推進しやすいグリーンインフラのタイプを検討する, 応用生態工学, 2025.
  • Daichi Iijima, Takeshi Osawa, Seasonal changes in altitudinal patterns of bird species richness in a temperate low-elevation mountain, Acta Oecologica, Vol. 125, pp.104033-104033, 2024.
  • Takeshi Osawa, Agricultural land around river confluences could strongly suppress floods occurrences, Environmental and Sustainability Indicators, pp.100533-100533, 2024.
  • Yuna Sawada, Nozomu Sato, Takeshi Osawa, Kazuma Matsumoto, Ming-Chung Chiu, Ryuichi Okada, Midori Sakura, Takuya Sato, A potential evolutionary trap for the extended phenotype of a nematomorph parasite, PNAS Nexus, Vol. 3, No. 10, 2024.
  • Marumi Fujii, Etsuro Takagi, Takeshi Osawa, Differential phase of Platypus quercivorus attacks in urban green space: A case study on 2 urban parks in Tokyo, Trees, Forests and People, Vol. 16, pp.100554-100554, 2024.
  • 西田 貴明, 遠香 尚史, 吉成 絵里香, 大澤 剛士, 地方自治体の規模がグリーンインフラ、生態系を活用した防災・減災の政策に及ぼす影響, 保全生態学研究, Vol. advpub, 2024.
  • 山口 朝美, 大澤剛士, クロヤツシロランの生育可能条件からみる竹林のハビタットとしての有用性, 保全生態学研究, 2024.
  • Takeshi Osawa, Overlap relationship between the priority of land consolidation and the floodplain wetland potential in paddy field, Ecological Research, 2023.
  • 大澤 剛士, 気候変動適応策としての農地を利活用した防災・減災の現状と課題, 地球環境, Vol. 28, No. 1, 2023.
  • Katsuhiko Yoshida, Kenji Hata, Kazuto Kawakami, Syuntaro Hiradate, Takeshi Osawa, Naoki Kachi, Predicting ecosystem changes by a new model of ecosystem evolution, Scientific Reports, Vol. 13, No. 1, 2023.
  • Narumasa Tsutsumida, Akira Kato, Takeshi Osawa, Hideyuki Doi, Mapping Forest Vertical Structure Attributes with GEDI, Sentinel-1, and Sentinel-2, IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium, 2023.
  • 浮田 悠, 佐藤 臨, 大澤 剛士, 東京都多摩地域南部におけるゲンジボタル Luciola cruciata の生息に及ぼす過去の土地被覆の影響, 保全生態学研究, Vol. 28, pp.137-145, 2023.
  • Takeshi Osawa, Narumasa Tsutsumida, Hayato Iijima, Kimiko Okabe, Prediction of the visit and occupy of the sika deer (Cervus nippon) during the summer season using a virtual ecological approach, Scientific Reports, Vol. 13, No. 1, 2023.
  • 佐々木 翔哉, 大澤 剛士, 南多摩地域から世田谷区の都市公園に生息するホンドタヌキの食性と人工景観の関係, 哺乳類科学, Vol. 63, No. 1, pp.69-85, 2023.
  • Yuki G. Baba, Takeshi Osawa, Yoshinobu Kusumoto, Koichi Tanaka, Multi-Spatial-Scale Factors Determining the Abundance of Frogs in Rice Paddy Fields and Their Potential as Biological Control Agents, Wetlands, Vol. 43, No. 2, 2023.
  • 佐々木 翔哉, 大澤 剛士, 東京都南多摩地域における疥癬症に感染したタヌキの活動時間, 保全生態学研究, Vol. 27, No. 2, pp.275-281, 2022.
  • Seiichiro Ohata, Takeshi Osawa, Nozomu Sato, Narumasa Tsutsumida, Large, concealed islands in the urban sea: Scattered surrounding green space enhances the quality of grassland habitats in urban parks, Tokyo, Urban Ecosystems, Vol. 26, No. 3, pp.641-649, 2022.
  • Takeshi Osawa, Evaluating the effectiveness of basin management using agricultural land for ecosystem-based disaster risk reduction, International Journal of Disaster Risk Reduction, Vol. 83, pp.103445-103445, 2022.
  • Yui Tamura, Takeshi Osawa, Ken Tabuchi, Kazuhisa Yamasaki, Tokumitsu Niiyama, Shigeto Sudo, Yasushi Ishigooka, Akira Yoshioka, Mayura B. Takada, Estimating plant–insect interactions under climate change with limited data, Scientific Reports, Vol. 12, No. 1, pp.10554-, 2022.
  • Mizuki Onozuka, Takeshi Osawa, Utilization potential of alien plants in nature-based tourism sites: A case study on Agave americana (century plant) in the Ogasawara Islands, Ecological Economics, Vol. 195, pp.107362-107362, 2022.
  • 大澤剛士, 瀧健太郎, 三橋弘宗, 河川合流の特性を活かした防災・減災（Eco-DRR）の可能性：那珂川周辺に存在する水田の利活用アイディア, 保全生態学研究, Vol. 27, pp.31-41, 2022.
  • Takeshi Osawa, Takaaki Nishida, Takashi Oka, Paddy Fields as Green Infrastructure: Their Ecosystem Services and Threatening Drivers, Ecological Research Monographs, pp.175-185, 2022.
  • Takeshi Osawa, Takaaki Nishida, Toward Social Infrastructure: Typological Idea for Evaluating Implementation Potential of Green Infrastructure, Ecological Research Monographs, pp.61-70, 2022.
  • Hideyuki Doi, Takeshi Osawa, Narumasa Tsutsumida, Assessing the potential repercussions of the COVID-19 pandemic on global SDG attainment, Discover Sustainability, Vol. 3, No. 1, 2022.
  • Takeshi Osawa, Hiroshi Tsunoda, Tomohide Shimada, Makoto Miwa, Establishment of an expansion-predicting model for invasive alien cerambycid beetle Aromia bungii based on a virtual ecology approach, Management of Biological Invasions, Vol. 13, 2022.
  • 佐々木譲, 大澤剛士, 土着クモによる害虫抑制の可能性-青森県五戸町のゴボウ畑における事例-, 北日本病害虫研究会報, Vol. 72, pp.130-135, 2021.
  • Kazuhisa Yamasaki, Ken Tabuchi, Akihiko Takahashi, Takeshi Osawa, Akira Yoshioka, Yasushi Ishigooka, Shigeto Sudo, Mayura B. Takada, Intraspecific variations in life history traits of two pecky rice bug species from Japan: Mapping emergence dates and number of annual generations, Ecology and Evolution, Vol. 11, No. 23, pp.16936-16950, 2021.
  • Takeshi Osawa, Takaaki Nishida, Takashi Oka, Potential of mitigating floodwater damage to residential areas using paddy fields in water storage zones, International Journal of Disaster Risk Reduction, Vol. 62, pp.102410-102410, 2021.
  • 松永 香織, 大澤 剛士, 都市緑地における植栽種の由来による温度低減効果の比較：東京都心部における事例, 保全生態学研究, Vol. 26, No. 1, pp.113-124, 2021.
  • Harriet Downey, Tatsuya Amano, Marc Cadotte, Carly N. Cook, Steven J. Cooke, Neal R. Haddaway, Julia P. G. Jones, Nick Littlewood, Jessica C. Walsh, Mark I. Abrahams, Gilbert Adum, Munemitsu Akasaka, Jose A. Alves, Rachael E. Antwis, Eduardo C. Arellano, Jan Axmacher, Holly Barclay, Lesley Batty, Ana Benítez‐López, Joseph R. Bennett, Maureen J. Berg, Sandro Bertolino, Duan Biggs, Friederike C. Bolam, Tim Bray, Barry W. Brook, Joseph W. Bull, Zuzana Burivalova, Mar Cabeza, Alienor L. M. Chauvenet, Alec P. Christie, Lorna Cole, Alison J. Cotton, Sam Cotton, Sara A. O. Cousins, Dylan Craven, Will Cresswell, Jeremy J. Cusack, Sarah E. Dalrymple, Zoe G. Davies, Anita Diaz, Jennifer A. Dodd, Adam Felton, Erica Fleishman, Charlie J. Gardner, Ruth Garside, Arash Ghoddousi, James J. Gilroy, David A. Gill, Jennifer A. Gill, Louise Glew, Matthew J. Grainger, Amelia A. Grass, Stephanie Greshon, Jamie Gundry, Tom Hart, Charlotte R. Hopkins, Caroline Howe, Arlyne Johnson, Kelly W. Jones, Neil R. Jordan, Taku Kadoya, Daphne Kerhoas, Julia Koricheva, Tien Ming Lee, Szabolcs Lengyel, Stuart W. Livingstone, Ashley Lyons, Gráinne McCabe, Jonathan Millett, Chloë Montes Strevens, Adam Moolna, Hannah L. Mossman, Nibedita Mukherjee, Andrés Muñoz‐Sáez, Nuno Negrões, Olivia Norfolk, Takeshi Osawa, Sarah Papworth, Kirsty J. Park, Jérôme Pellet, Andrea D. Phillott, Joshua M. Plotnik, Dolly Priatna, Alejandra G. Ramos, Nicola Randall, Rob M. Richards, Euan G. Ritchie, David L. Roberts, Ricardo Rocha, Jon Paul Rodríguez, Roy Sanderson, Takehiro Sasaki, Sini Savilaakso, Carl Sayer, Cagan Sekercioglu, Masayuki Senzaki, Grania Smith, Robert J. Smith, Masashi Soga, Carl D. Soulsbury, Mark D. Steer, Gavin Stewart, E. F. Strange, Andrew J. Suggitt, Ralph R. J. Thompson, Stewart Thompson, Ian Thornhill, R. J. Trevelyan, Hope O. Usieta, Oscar Venter, Amanda D. Webber, Rachel L. White, Mark J. Whittingham, Andrew Wilby, Richard W. Yarnell, Veronica Zamora, William J. Sutherland, Training future generations to deliver evidence‐based conservation and ecosystem management, Ecological Solutions and Evidence, Vol. 2, No. 1, 2021.
  • Takeshi Osawa, Takaaki Nishida, Takashi Oka, Paddy fields located in water storage zones could take over the wetland plant community, Scientific Reports, Vol. 10, No. 1, 2020.
  • Kentaro Ikeda, Takeshi Osawa, Predicting disease occurrence of cabbage Verticillium wilt in monoculture using species distribution modeling, PeerJ, Vol. 8, pp.e10290-e10290, 2020.
  • Shin‐ichi Yoshimatsu, Daisuke Watabiki, Takeshi Osawa, Specimen‐based records of geometrid, pyralid and crambid moths (Lepidoptera) with location information from the collection of Dr. Hiroshi Inoue, Ecological Research, Vol. 35, No. 6, pp.1051-1056, 2020.
  • Takeshi Osawa, Shin‐ichi Yoshimatsu, Yukinobu Nakatani, Specimen‐based records and geographic locations of carabid beetles (Coleoptera) collected mainly by Dr. Kazuo Tanaka, Ecological Research, Vol. 35, No. 6, pp.1029-1034, 2020.
  • Nagai Shin, Hideaki Shibata, Takeshi Osawa, Takehisa Yamakita, Masahiro Nakamura, Tanaka Kenta, Toward more data publication of long-term ecological observations, Ecological Research, Vol. 35, No. 5, pp.700-707, 2020.
  • Takeshi Osawa, Establishing strategic management plan for alien invasive plants in Ogasawara islands, Global Environmental Research, Vol. 34, pp.21-28, 2020.
  • Takeshi Osawa, Yusuke Ueno, Takaaki Nishida, Jun Nishihiro, Do both habitat and species diversity provide cultural ecosystem services? A trial using geo-tagged photos, Nature Conservation, Vol. 38, No. 38, pp.61-77, 2020.
  • Takeshi Osawa, Takaaki Nishida, Takashi Oka, High tolerance land use against flood disasters: How paddy fields as previously natural wetland inhibit the occurrence of floods, Ecological Indicators, Vol. 114, 2020.
  • Yoshida K, Hata, K, Kawakami, K, Hiradate, S, Osawa, T, Kachi, N, Ecosystem changes following the eradication of invasive species: evaluation of various eradication scenarios by computer simulation, Ecological Modelling, Vol. 413, pp.108831-, 2019.
  • Shin ichiro S. Matsuzaki, Ayato Kohzu, Taku Kadoya, Mirai Watanabe, Takeshi Osawa, Keiichi Fukaya, Kazuhiro Komatsu, Natsuko Kondo, Haruyo Yamaguchi, Haruko Ando, Koichi Shimotori, Megumi Nakagawa, Toshikazu Kizuka, Akira Yoshioka, Takahiro Sasai, Nobuko Saigusa, Bunkei Matsushita, Noriko Takamura, Role of wetlands in mitigating the trade-off between crop production and water quality in agricultural landscapes, Ecosphere, Vol. 10, No. 11, 2019.
  • Yasuhisa Kondo, Akihiro Miyata, Ui Ikeuchi, Satoe Nakahara, Ken'ichiro Nakashima, Hideyuki Ōnishi, Takeshi Osawa, Kazuhiko Ota, Kenichi Sato, Ken Ushijima, Bianca Vienni Baptista, Terukazu Kumazawa, Kazuhiro Hayashi, Yasuhiro Murayama, Noboru Okuda, Hisae Nakanishi, Interlinking open science and community-based participatory research for socio-environmental issues, Current Opinion in Environmental Sustainability, Vol. 39, pp.54-61, 2019.
  • 大澤剛士, 大澤剛士, 天野達也, 天野達也, 大澤隆文, 高橋康夫, 櫻井玄, 西田貴明, 江成広斗, 生物多様性に関わる政策課題を俯瞰するlegislative scan－日本における研究と実践の隔たりの解消に向けて－, 保全生態学研究, Vol. 24, No. 1, pp.135-149, 2019.
  • 大澤剛士, 川野智美, 特定外来生物オオハンゴンソウ（Rudbeckia laciniata L.）のマルチスケールでの管理計画立案―広域的な管理方針地図と詳細な作業計画地図の作成―., 保全生態学研究, Vol. 24, pp.125-134, 2019.
  • Takeshi Osawa, Perspectives on Biodiversity Informatics for Ecology, Ecological Research, Vol. 34, pp.446-456, 2019.
  • Takeshi Osawa, Munemitsu Akasaka, Naoki Kachi, Facilitation of management plan development via spatial classification of areas invaded by alien invasive plant., Biological Invasions, Vol. 21, pp.2067-2080, 2019.
  • Ohnishi, Takeshi Osawa, Toshiaki Yamamoto, Reina Uno, Landscape heterogeneity in landform and land use provides functional resistance to gene flow in continuous Asian black bear populations., Ecology and Evolution, Vol. 9, pp.4958-4968, 2019.
  • 西田 貴明, 大澤 剛士, 吉田 丈人, 宮川 絵里香, ポスト2020 年の生物多様性政策に向けて, 日本生態学会誌, Vol. 69, No. 1, pp.13-18, 2019.
  • Chika Egawa, Takeshi Osawa, Tomoko Nishida, Yasuto Furukawa, Relative importance of biological and human-associated factors for alien plant invasions in Hokkaido, Japan., Journal of Plant Ecology, Vol. 12, pp.673-681, 2019.
  • Aung Zaw Oo, Shigeto Sudo, Kazuyuki Inubushi, Umamageswari Chellappan, Akinori Yamamoto, Keitsuke Ono, Masayoshi Mano, Sachiko Hayashida, Vanitha Koothan, Takeshi Osawa, Yukio Terao, Jothimani Palanisamy, Elayakumar Palanisamy, Ravi Venkatachalam, Mitigation Potential and Yield-Scaled Global Warming Potential of Early-Season Drainage from a Rice Paddy in Tamil Nadu, India, Agronomy, Vol. 8, No. 10, pp.202-219, 2018.
  • Takeshi Osawa, Kazuhisa Yamasaki, Ken Tabuchi, Akira Yoshioka, Yasushi Ishigooka, Shigeto Sudo, Mayura B.Takada, Climate-mediated population dynamics enhances distribution range expansion of the pest insect, Stenotus rubrovittatus, Basic and Applied Ecology, Vol. 30, pp.41-51, 2018.
  • Takeshi Osawa, Kazuhisa Yamasaki, Ken Tabuchi, Akira Yoshioka, Mayura B. Takada, Detecting crucial dispersal pathways using a virtual ecology approach: A case study of the mirid bug Stenotus rubrovittatus, Ambio, Vol. 47, pp.1-10, 2018.
  • Takeshi Osawa, Kazuhisa Yamasaki, Ken Tabuchi, Akira Yoshioka, Yasushi Ishigooka, Shigeto Sudo, Mayura B. Takada, Climate-mediated population dynamics enhance distribution range expansion in a rice pest insect, Basic and Applied Ecology, 2018.
  • Yamamoto, A, Matsumoto, T, Kobayashi, H, Osawa, T, Kachi, N, Eguchi, K, Preliminary Report on unnoticed establishment of Pheidole parva Mayr Complex (Insecta: Hymenoptera: Formicidae: Myrmicinae) in the Ogasawara Islands: A potential risk to native ground-dwelling invertebrates, Taiwanese Journal of Entomological Studies, Vol. 3, pp.53-59, 2018.
  • Tomoyo F. Koyanagi, Takuya Furukawa, Takeshi Osawa, Nestedness-resultant community disassembly process of extinction debt in a highly fragmented semi-natural grassland, Plant Ecology, Vol. 219, pp.1093-1103, 2018.
  • Kenji Hata, Takeshi Osawa, Syuntaro Hiradate, Naoki Kachi, Soil erosion alters soil chemical properties and limits grassland plant establishment on an oceanic island even after goat eradication, Restoration Ecology, Vol. 27, pp.333-342, 2018.
  • Aung Zaw Oo, Shigeto Sudo, Kazuyuki Inubushi, Masayoshi Mano, Akinori Yamamoto, Keitsuke Ono, Takeshi Osawa, Sachiko Hayashida, Prabir K. Patra, Yukio Terao, P. Elayakumar, K. Vanitha, C. Umamageswari, P. Jothimani, V. Ravi, Methane and nitrous oxide emissions from conventional and modified rice cultivation systems in South India, AGRICULTURE ECOSYSTEMS & ENVIRONMENT, Vol. 252, pp.148-158, 2018.
  • 大澤剛士, 戸津久美子, 生物多様性情報の標準データフォーマットDarwin Core Archiveと生態学データに適合させる拡張形式 "Sample-based Data", 保全生態学研究, Vol. 22, No. 2, pp.371-381, 2017.
  • Takeshi Osawa, Yuki G. Baba, Tatsumi Suguro, Noriaki Naya, Takeo Yamauchi, Specimen records of spiders (Arachnida: Araneae) by monthly census for 3 years in forest areas of Yakushima Island, Japan, Biodiversity Data Journal, Vol. 5, No. 1, pp.e14789-, 2017.
  • Kristin Vanderbilt, John H. Porter, Sheng-Shan Lu, Nic Bertrand, David Blankman, Xuebing Guo, Honglin He, Don Henshaw, Karpjoo Jeong, Eun-Shik Kim, Chau-Chin Lin, Margaret O'Brien, Takeshi Osawa, Eamonn O. Tuama, Wen Su, Haibo Yang, A prototype system for multilingual data discovery of International Long-Term Ecological Research (ILTER) Network data, ECOLOGICAL INFORMATICS, Vol. 40, pp.93-101, 2017.
  • 大澤 剛士, オープンデータがもつ「データ開放」の意味を再考する：自由な利用と再利用の担保に向けて, 情報管理, Vol. 60, No. 1, pp.11-19, 2017.
  • 大澤 剛士, 人口減時代における近未来の農地利用を考える─食料生産と生物多様性，生態系サービスの持続的な両立を目指して─, 野生生物と社会, Vol. 5, No. 1, pp.17-27, 2017.
  • Takeshi OSAWA, Hiromune MITSUHASHI, 日本の農業生態系における機能別ゾーニングの試行, Ecology and Civil Engineering, Vol. 19, No. 2, pp.211-220, 2017.
  • Takeshi Osawa, Yusuke Ueno, Research-implementation gap in Japanese ecology field, Japanese Journal of Ecology, Vol. 67, No. 2, pp.257-265, 2017.
  • Takeshi Osawa, Takehiko Yamanaka, Yukinobu Nakatani, Jun Nishihiro, Shiori Takahashi, Suzuki Mahoro, Hironobu Sasaki, A crowdsourcing approach to collecting photobased insect and plant observation records, Biodiversity Data Journal, Vol. 5, pp.e21271-, 2017.
  • Takeshi Osawa, Shigenori Okawa, Shunji Kurokawa, Shinichiro Ando, Generating an agricultural risk map based on limited ecological information: A case study using Sicyos angulatus, AMBIO, Vol. 45, No. 8, pp.895-903, 2016.
  • Keita Fukasawa, Yoshio Mishima, Akira Yoshioka, Nao Kumada, Kumiko Totsu, Takeshi Osawa, Mammal assemblages recorded by camera traps inside and outside the evacuation zone of the Fukushima Daiichi Nuclear Power Plant accident (vol 31, pg 493, 2016), ECOLOGICAL RESEARCH, Vol. 31, No. 5, pp.757-757, 2016.
  • Fukasawa Keita, Mishima Yoshio, Yoshioka Akira, Kumada Nao, Totsu Kumiko, Osawa Takeshi, Mammal assemblages recorded by camera traps inside and outside the evacuation zone of the Fukushima Daiichi Nuclear Power Plant accident, ECOLOGICAL RESEARCH, Vol. 31, No. 4, pp.493-493, 2016.
  • Takeshi Osawa, Kazunori Kohyama, Hiromune Mitsuhashi, Trade-off relationship between modern agriculture and biodiversity: Heavy consolidation work has a long-term negative impact on plant species diversity, LAND USE POLICY, Vol. 54, pp.78-84, 2016.
  • T. Osawa, K. Hata, N. Kachi, Eradication of feral goats enhances expansion of the invasive shrub Leucaena leucocephala on Nakoudo-jima, an oceanic island, WEED RESEARCH, Vol. 56, No. 2, pp.168-178, 2016.
  • 佐々木 宏展, 大西 亘, 大澤 剛士, “市民科学”が持つ意義を多様な視点から再考する, 保全生態学研究, Vol. 21, No. 2, pp.243-248, 2016.
  • Takeshi Osawa, Kazunori Kohyama, Hiromune Mitsuhashi, Multiple factors drive regional agricultural abandonment, SCIENCE OF THE TOTAL ENVIRONMENT, Vol. 542, pp.478-483, 2016.
  • Yasuoki Takami, Takeshi Osawa, Ecological differentiation and habitat unsuitability maintaining a ground beetle hybrid zone, ECOLOGY AND EVOLUTION, Vol. 6, No. 1, pp.113-124, 2016.
  • Naoki Katayama, Takeshi Osawa, Tatsuya Amano, Yoshinobu Kusumoto, Are both agricultural intensification and farmland abandonment threats to biodiversity? A test with bird communities in paddy-dominated landscapes, AGRICULTURE ECOSYSTEMS & ENVIRONMENT, Vol. 214, pp.21-30, 2015.
  • Syuntaro Hiradate, Sayaka Morita, Kenji Hata, Takeshi Osawa, Kyoko Sugai, Naoki Kachi, Effects of soil erosion and seabird activities on chemical properties of surface soils on an oceanic island in Ogasawara Islands, Japan, CATENA, Vol. 133, No. 3, pp.495-502, 2015.
  • Takeshi Osawa, Taku Kadoya, Kazunori Kohyama, 5- and 10-km mesh datasets of agricultural land use based on governmental statistics for 1970–2005, Ecological Research, Vol. 30, No. 5, pp.757-757, 2015.
  • Munemitsu Akasaka, Takeshi Osawa, Makihiko Ikegami, The role of roads and urban area in occurrence of an ornamental invasive weed: a case of Rudbeckia laciniata L, URBAN ECOSYSTEMS, Vol. 18, No. 3, pp.1021-1030, 2015.
  • Takeshi Osawa, Burning management mediates the coexistence of plant species in a semi-natural grassland, NATUREZA & CONSERVACAO, Vol. 13, No. 2, pp.171-177, 2015.
  • Takeshi Osawa, Kenji Ito, A rapid method for constructing precaution maps based on a simple virtual ecology model: a case study on the range expansion of the invasive aquatic species Limnoperna fortunei, POPULATION ECOLOGY, Vol. 57, No. 3, pp.529-538, 2015.
  • Takeshi Osawa, Importance of Farmland in Urbanized Areas as a Landscape Component for Barn Swallows (Hirundo rustica) Nesting on Concrete Buildings, ENVIRONMENTAL MANAGEMENT, Vol. 55, No. 5, pp.1160-1167, 2015.
  • Itsarapong Voraphab, Yupa Hanboonsong, Youichi Kobori, Hiroaki Ikeda, Takeshi Osawa, Insect species recorded in sugarcane fields of Khon Kaen Province, Thailand, over three seasons in 2012, ECOLOGICAL RESEARCH, Vol. 30, No. 3, pp.415-415, 2015.
  • 大澤 剛士, 井下原 元, 伊藤 千陽, 道又 静香, 杉山 大樹, 植生保護柵を利用したシカによる林床植生変化の早期検出, 保全生態学研究, Vol. 20, No. 2, pp.167-179, 2015.
  • Miyazaki Yuko, Mitsuhashi Hiromune, Osawa Takeshi, シナリオ分析に基づいた竹林の管理計画立案, 保全生態学研究, Vol. 20, No. 1, pp.3-14, 2015.
  • Takafumi Ohsawa, Takeshi Osawa, Quantifying effects of legal and non-legal designations of alien plant species on their control and profile, BIOLOGICAL INVASIONS, Vol. 16, No. 12, pp.2669-2680, 2014.
  • Takeshi Osawa, Kyohei Watanabe, Hiroaki Ikeda, Shori Yamamoto, New approach for evaluating habitat stability using scarce records for both historical and contemporary specimens: a case study using Carabidae specimen records, ENTOMOLOGICAL SCIENCE, Vol. 17, No. 4, pp.425-431, 2014.
  • Takeshi Osawa, Hiromune Mitsuhashi, Atushi Ushimaru, Plant species' coexistence relationships may shift according to life history traits and seasons, PLANT ECOLOGY, Vol. 215, No. 6, pp.597-612, 2014.
  • Naoki Ohnishi, Takeshi Osawa, A difference in the genetic distribution pattern between the sexes in the Asian black bear, MAMMAL STUDY, Vol. 39, No. 1, pp.11-16, 2014.
  • Munemitsu Akasaka, Akio Takenaka, Fumiko Ishihama, Taku Kadoya, Mifuyu Ogawa, Takeshi Osawa, Takehisa Yamakita, Shuichiro Tagane, Reiichiro Ishii, Shin Nagai, Hisatomo Taki, Takumi Akasaka, Hiroyuki Oguma, Toru Suzuki, Hiroya Yamano, Development of a National Land-Use/Cover Dataset to Estimate Biodiversity and Ecosystem Services, Integrative Observations and Assessments, pp.209-229, 2014.
  • 大澤剛士, 神保宇嗣, ビッグデータ時代の環境科学-生物多様性分野におけるデータベース統合、横断利用の現状と課題-, 統計数理, Vol. 61, pp.217-231, 2014.
  • 岩崎貴也, 阪口翔太, 横山良太, 高見泰興, 大澤剛士, 池田紘士, 陶山佳久, 地理情報システム技術を用いた歴史生物地理学的解析, 日本生態学会誌, Vol. 64, No. 3, pp.183-199, 2014.
  • Takeshi Osawa, Kazunori Kohyama, Hiromune Mitsuhashi, Areas of Increasing Agricultural Abandonment Overlap the Distribution of Previously Common, Currently Threatened Plant Species, PLOS ONE, Vol. 8, No. 11, pp.e79978-, 2013.
  • Takeshi Osawa, Hiromune Mitsuhashi, Hideyuki Niwa, Many alien invasive plants disperse against the direction of stream flow in riparian areas, ECOLOGICAL COMPLEXITY, Vol. 15, pp.26-32, 2013.
  • Takeshi Osawa, Monitoring records of plant species in the Hakone region of Fuji-Hakone-Izu National Park, Japan, 2001-2010, ECOLOGICAL RESEARCH, Vol. 28, No. 4, pp.541-541, 2013.
  • 大澤剛士, 赤坂宗光, 現場で使える研究成果とは？研究成果を現場に届けるために必要なことを考える, 雑草研究, Vol. 58, No. 1, pp.22-28, 2013.
  • Osawa Takeshi, Kohyama Kazunori, Kuwagata Tsuneo, Sudo Shigeto, Web APIを活用した個別データベースシステムの横断利用, 農業情報研究, Vol. 21, No. 1, pp.1-10, 2012.

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