Kotaro Shirai

2022 - 2025 地球化学的手法の先進的応用による新たな回遊・代謝・食性履歴指標の開発

2022 - 2025 先端的な地球化学分析を応用した先史時代貝殻遺物の産地判別方法の開発

2021 - 2025 Discontinuity of migratory routes in the early life history of Pacific saury and the mechanism of offshore distribution formation

2022 - 2024 生物骨格の微量同位体比分析技術の深化:森林保全に向けた両生類の環境・生態履歴復元

2022 - 2024 海と川を繋ぐ生物多様性保全に向けた魚類回遊研究の新展開:高解像度の移動推定

2022 - 2024 バイオロギング,地球化学,情報学の学際的融合によるマッコウクジラの生息履歴推定

2021 - 2024 気候変動に対するニホンウナギの応答機構:緯度勾配と多様な生息域利用に着目して

2020 - 2024 In search of genes related to the life-history polymorphism in the Japanese eel Anguilla japonica: a population genomics approach

2021 - 2023 チベット高原の火山熱水活動の地球化学的研究

2020 - 2023 Development of the microscale stable isotope analytical technique of carbonate in fish hardparts for temperature reconstruction

2020 - 2023 日本産サケ稚魚の回遊中のエネルギーバランスと環境選択の解明および温暖化適応予測

2019 - 2023 Long-term and high-resolution environmental reconstruction using natural carbonate

2019 - 2022 Tissue d2H value as a natural marker for tracking fish migration, movement and related physiological responses

2018 - 2022 Evaluation on naturally-recruited/stocked Japanese eel distribution based on otolith stable isotope ratios.

2018 - 2021 Reconstruction of multi-decadal climate variability based on sclerochronological analysis of long-lived bivalve shells Mercenaria Stimpsoni

2018 - 2021 Reconstruction of bioavailable Cs-137 activity concentration just after the FDNPP accident using hard tissues memory as a proxy

2017 - 2021 Reconstruction of past environment and volcanic eruption by high-resolution analysis of carbonate samples

2017 - 2021 Morphofunctional approach for stable mass production of glass eels through environmental controls

2015 - 2020 Environmental history of living marine resources and fluctuation of fisheries resources

2016 - 2019 Proxy development for fish migratory area using high-end geochemical technique

2019 - 2019 二枚貝殻考古学的試料の分析による環境・人類相互作用の変遷史解明

2016 - 2018 Reconstruction of both salinity and temperature from oxygen isotope of biogenic calcium carbonate

2015 - 2018 Development of a scheme to reproduce a migration history of Japanese sardine using otolith d18O and a data assimilation model

2015 - 2018 Life history of chum salmon Onchorhynchus keta during the period migrating in the North Pacific inferred from scale and otolih elemental and stable isotopic compositions

2014 - 2018 A new approach to mangrove estuary conservation based on fish distribution and migration ecology

2014 - 2017 Temperature dependence on elemental composition in the skeleton of scleractinian corals

2012 - 2017 Ultra-high resolution past marine environmental reconstruction using a NanoSIMS

2012 - 2016 Investigations of the stock structure of Pacific bluefin tuna using biologging, mathematical modeling and otolith chemical analysis

2012 - 2016 Impacts of the tsunami associated with the 2011Great Earthquake in East Japan on the populations of salmon and ayu in Sanriku coast of northern japan

2013 - 2015 Super-fine temporal resolution past climate reconstruction from micro analysis of giant clam shell

2011 - 2014 High resolution analysis for the response of life history traits of mollusks to marine environment during cold and warm geologic periods

2008 - 2012 Historic changes in coral reefs and their stressors

2010 - 2011 Study on the development of statolith of scyphozoa using detailed distribution of sulfur isotope

2009 - 2010 生物起源炭酸塩の微小領域元素分布による新たな視点からの古環境・古生態復元

2008 - 2010 High-time resolution reconstruction of the organism-environmentinteraction by using modern and fossil mollusk shell microincrements