Research field (2)：
Environmental policy and society
, Environmental impact assessment
Research keywords (10)：
生態系を活用した防災、減災(Eco-DRR)
, Open Data
, Citizen Science
, Green Infrastructure
, Land Use
, レッドデータブック
, 自然史資料
, レッドリスト
, 耕作放棄地
, 一般参加型調査
Research theme for competitive and other funds (12)：
2022 - 2025 Formulation of management units in areas of black bear extermination and evaluation of harmful genes in endangered populations
2020 - 2023 Evaluation of habitat quality in paddy field which originate from natural wetland
2020 - 2023 Prediction of the expansion of infectious diseases originated from wildlife based on animal relay models
2019 - 2022 Invasiveness of alien plants on oceanic islands: Interactions between nutrient use characteristics of plants and soil characteristics in an ecosystem
2018 - 2021 What do landscape features bring genetic structure of Asian black bear populations by using landscape genetic analysis?
2016 - 2021 Impacts of agricultural landscape change and climate change on the expanding distribution of rice paddy pests using long-term data
2016 - 2019 Sustainability of ecosystem function: changes in ecosystems with soil degradation caused by non-native species
2015 - 2017 TomboWatch! the entertainment web application game for citizens' science
2013 - 2016 Changes in island ecosystems after eradication of invasive alien species: Proposal for management scenarios considering environmental heterogeneity
2012 - 2015 Evaluatin on agricultural abandonment for biodiversity
2012 - 2014 Establishing a canonical procedure for collecting biodiversity information from citizen scientists using mobile phones and a self-identification system
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Papers (106)：
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. 2024. 3. 10
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. 2024. 16. 100554-100554
Nishida Takaaki, Oka Takashi, Yoshinari Erika, Osawa Takeshi. Impacts of municipal government size on green infrastructure and ecosystem-based disaster risk reduction policy implementation in Japan. Japanese Journal of Conservation Ecology. 2024. advpub
Takeshi Osawa. Overlap relationship between the priority of land consolidation and the floodplain wetland potential in paddy field. Ecological Research. 2023
