TAKUYA ISHIDA

Last Updated :2025/05/09

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
E-mail
tkishidahiroshima-u.ac.jp
Self-introduction
I am studying the dynamics of nutrients, especially phosphorus in ecosystems. Phosphorus is essential element for the growth of organisms, and is deeply involved in the maintenance of ecosystems, food production, and environmental problems such as eutrophication. Therefore, it is very important to clarify the phosphorus dynamics to realize a sustainable society. I am conducting the research based on field investigation, phosphate oxygen isotope analysis, and chemical analysis.

Basic Information

Major Professional Backgrounds

  • 2015/04/01, 2020/03/31, Research Institute for Humanity and Nature, Researcher
  • 2015/01/01, 2015/03/31, Nagoya University, Researcher

Academic Degrees

  • MA in Agriculture, Nagoya University
  • PhD in Agriculture, Nagoya University

Educational Activity

  • [Bachelor Degree Program] School of Integrated Arts and Sciences : Department of Integrated Arts and Sciences : Integrated Arts and Sciences
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Transdisciplinary Science and Engineering Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Transdisciplinary Science and Engineering Program

Research Fields

  • Agricultural sciences;Applied aquatic science;Aquatic bioproduction science
  • Agricultural sciences;Agricultural chemistry;Plant nutrition / Soil science
  • Agricultural sciences;Forest and forest products science;Forest science
  • Environmental science;Environmental analyses and evaluation;Environmental dynamic analysis

Research Keywords

  • Catchment Water Resources Security Science
  • Nutrient cycling in watersheds

Affiliated Academic Societies

  • Japan Geoscience Union
  • The Japanese Society of Limnology
  • Japanese Society of Soil Science and Plant Nutrition

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Earth Sciences I
  2. 2025, Liberal Arts Education Program1, 3Term, Experimental Methods and Laboratory Work in Earth Sciences I
  3. 2025, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Earth Sciences I
  4. 2025, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Earth Sciences II
  5. 2025, Liberal Arts Education Program1, 4Term, Experimental Methods and Laboratory Work in Earth Sciences II
  6. 2025, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Earth Sciences II
  7. 2025, Liberal Arts Education Program1, 1Term, Introduction of Natural Environmental Science in Earth Surface
  8. 2025, Liberal Arts Education Program1, 4Term, Introduction to Water and Material Cycle
  9. 2025, Liberal Arts Education Program1, Second Semester, Introduction to Earth Science
  10. 2025, Undergraduate Education, Second Semester, Fundamental Laboratory Course in Geology
  11. 2025, Undergraduate Education, Second Semester, Practical Methods in Geology
  12. 2025, Undergraduate Education, 3Term, Laboratory Course in Natural Environmental Sciences A
  13. 2025, Undergraduate Education, 3Term, Practical Methods in Natural Environmental SciencesA
  14. 2025, Undergraduate Education, 1Term, Laboratory Course in Natural Environmental Sciences B
  15. 2025, Undergraduate Education, 1Term, Practical Methods in Natural Environmental SciencesB
  16. 2025, Undergraduate Education, 2Term, Laboratory Course in Natural Environmental Sciences C
  17. 2025, Undergraduate Education, 2Term, Practical Methods in Natural Environmental SciencesC
  18. 2025, Undergraduate Education, Intensive, Lecture and Field Work In Natural Environment
  19. 2025, Undergraduate Education, 2Term, Terrestrial Water Environmental Science
  20. 2025, Graduate Education (Master's Program) , 3Term, Transdisciplinary Science and Engineering Program Common Subjects 3 (Resilient Development)
  21. 2025, Graduate Education (Master's Program) , 4Term, Water Security

Research Activities

Academic Papers

  1. Spatiotemporal variations in integrated trophic positions of stream macroinvertebrate communities, PROGRESS IN EARTH AND PLANETARY SCIENCE, 12(1), 20250103
    Link to Paper Search Results by DOI
  2. Phosphorus Cycling in Intertidal Zones with Submarine Groundwater Discharge: Insights from Time-Integrated Phosphate Oxygen Isotope Analyses through Passive Sampling, ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS, 11(10), 1040-1045, 20240922
    Link to Paper Search Results by DOI
  3. Tracing of fire-induced soil phosphorus transformations using phosphate oxygen isotope ratio, EUROPEAN JOURNAL OF SOIL SCIENCE, 75(5), 202409
    Link to Paper Search Results by DOI
  4. Phosphorus speciation in coastal sediment of Osaka Bay: relation to anthropogenic phosphorus loading, ENVIRONMENTAL RESEARCH LETTERS, 19(9), 20240901
    Link to Paper Search Results by DOI
  5. Using oxygen isotopes in phosphate to assess biological phosphorus cycling in a small and shallow freshwater lake system, LIMNOLOGY AND OCEANOGRAPHY, 69(5), 1285-1298, 202405
    Link to Paper Search Results by DOI
  6. ★, Evaluation of Phosphorus Enrichment in Groundwater by Legacy Phosphorus in Orchard Soils with High Phosphorus Adsorption Capacity Using Phosphate Oxygen Isotope Analysis, ENVIRONMENTAL SCIENCE & TECHNOLOGY, 58(12), 5372-5382, 20240315
    Link to Paper Search Results by DOI
  7. A new method for phosphate purification for oxygen isotope ratio analysis in freshwater and soil extracts using solid-phase extraction with zirconium-loaded resin, RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 36(22), 20221130
    Link to Paper Search Results by DOI
  8. A new sampling method with zirconium-loaded resin for phosphate oxygen isotope analysis in oligotrophic freshwater systems, RAPID COMMUNICATIONS IN MASS SPECTROMETRY, 36(22), 20221130
    Link to Paper Search Results by DOI
  9. Assessment of long-term phosphorus budget changes influenced by anthropogenic factors in a coastal catchment of Osaka Bay, SCIENCE OF THE TOTAL ENVIRONMENT, 843, 20221015
    Link to Paper Search Results by DOI
  10. Nitrate Contamination in Groundwater: Evaluating the Effects of Demographic Aging and Depopulation in an Island with Intensive Citrus Cultivation, WATER, 14(14), 20220721
    Link to Paper Search Results by DOI
  11. Sulfur accumulation in soil in a forested watershed historically exposed to air pollution in central Japan, GEODERMA, 407, 20220201
  12. Rice paddy irrigation seasonally impacts stream benthic macroinvertebrate diversity at the catchment level, Ecosphere, 12(5), 20210516
  13. Effects of winter flooding on phosphorus dynamics in rice fields, Limnology, 20200424
  14. Factors characterizing phosphate oxygen isotope ratios in river water: an inter-watershed comparison approach, Limnology, 202003
  15. ★, Identification of Phosphorus Sources in a Watershed Using a Phosphate Oxygen Isoscape Approach, Environmental Science & Technology, 53(9), 4707-4716, 201904
  16. Nutrient loadings and deforestation decrease benthic macroinvertebrate diversity in an urbanised tropical stream system., Limnologica, 2019
  17. Response of river water chemistry to changing atmospheric environment and sulfur dynamics in a forested catchment in central Japan, Biogeochemistry, 142(3), 357-374, 2019
  18. Validation of a high-resolution acoustic imaging sonar method by estimating the biomass of submerged plants in shallow water, ECOLOGICAL INFORMATICS, 46, 179-184, 201807
  19. Relationships of wood density and wood chemical traits between stems and coarse roots across 53 Bornean tropical tree species, JOURNAL OF TROPICAL ECOLOGY, 32, 175-178, 201603
  20. Quantitative Reconstruction of Sulfur Deposition Using a Mixing Model Based on Sulfur Isotope Ratios in Tree Rings, JOURNAL OF ENVIRONMENTAL QUALITY, 44(6), 1800-1808, 201511
  21. Characterization of sulfur deposition over the period of industrialization in Japan using sulfur isotope ratio in Japanese cedar tree rings taken from stumps, ENVIRONMENTAL MONITORING AND ASSESSMENT, 187(7), 201507
  22. Preliminary investigation of the formation age and chemical characterization of the tropical peat in the middle Sepik Plain, northern Papua New Guinea., Geoscience Letters, 2015
  23. Degree of Sulfate Saturation in Forest Soils Affected by Past Heavy Anthropogenic Deposition, WATER AIR AND SOIL POLLUTION, 225(8), 201408
  24. Rice paddy irrigation seasonally impacts stream benthic macroinvertebrate diversity at the catchment level, ECOSPHERE, 12(5), 202105
    Link to Paper Search Results by DOI
  25. Sulfur accumulation in soil in a forested watershed historically exposed to air pollution in central Japan, GEODERMA, 407, 20220201
    Link to Paper Search Results by DOI

External Funds

Acceptance Results of Competitive Funds

  1. 2024/04, 2027/03
  2. Grants-in-Aid for Early-Career Scientists, 2019, 2021