KOSHIKAWA Masami

Researcher Name: KOSHIKAWA Masami

Div (Section) name/title: Regional Environment Conservation Division(Soil Environment Section)/Chief Senior Researcher

Research Subject: Biogeochemistry of volcanic ash derived Ca in forest ecosystems. Trace element pollution of urban and montane soil.

Degree(s): PhD (Human and Environmetnal Studies)

Professional Qualification(s): Chemistry

Environmental Speciality Field: analytical chemistry,geochemistry,limnology

Research Subject

Fiscal Year: 2025
- 27226 : Research of environmental impacts and management in the disaster areas of Fukushima
- 27247 : Regional Environment Conservation Domain: Foresight and Advanced Basic Research
- 27272 : Re-evaluation of the mobility and bioavailability of cations in forest soils using Sr and Cs isotopic compositions
- 27273 : Can volcanic ash in soil contribute as a major source of calcium in plants, even in limestone-bedrock forests?
- 27410 : Development of a Method for Source Analysis of Radiocesium in Field-Cultivated Mushrooms
- 27419 : Developing a water quality health assessment system for offshore exploitation sites
Fiscal Year: 2024
- 26843 : Research of environmental impacts and management in the disaster areas of Fukushima
- 26864 : Regional Environment Conservation Domain: Foresight and Advanced Basic Research
- 26895 : Soil and sediment sorption of cationic surfactants investigated with equilibrium passive sampling methods
- 26899 : Monitoring the dynamics of radiocesium in a multi-media environment
- 26916 : Re-evaluation of the mobility and bioavailability of cations in forest soils using Sr and Cs isotopic compositions
Fiscal Year: 2023
- 26430 : Research of environmental impacts and management in the disaster areas of Fukushima
- 26453 : Regional Environment Conservation Domain: Foresight and Advanced Basic Research
- 26544 : Soil and sediment sorption of cationic surfactants investigated with equilibrium passive sampling methods
- 26627 : Monitoring the dynamics of radiocesium in a multi-media environment
- 26708 : Re-evaluation of the mobility and bioavailability of cations in forest soils using Sr and Cs isotopic compositions
Fiscal Year: 2022
- 25995 : Research of environmental impacts and management in the disaster areas of Fukushima
- 26010 : Regional Environment Conservation Domain: Foresight and Advanced Basic Research
- 26035 : Monitoring the dynamics of radiocesium in a multi-media environment
- 26102 : Soil and sediment sorption of cationic surfactants investigated with equilibrium passive sampling methods
- 26105 : The contribution of volcanic ash in the Ca cycle in Japanese forest ecosystems.
- 26106 : Re-evaluation of the mobility and bioavailability of cations in forest soils using Sr and Cs isotopic compositions
Fiscal Year: 2021
- 25527 : Research of environmental impacts and management in the disaster areas of Fukushima
- 25615 : The contribution of volcanic ash in the Ca cycle in Japanese forest ecosystems.
- 25713 : Regional Environment Conservation Domain: Foresight and Advanced Basic Research
- 25766 : Monitoring the dynamics of radiocesium in a multi-media environment
- 25863 : Behavior and hazard assessment of indium derived from IT products released into the environment
Fiscal Year: 2020
- 25153 : Analysis and prediction of radioactive substances behavior in multimedia environment
- 25235 : Behavior and hazard assessment of indium derived from IT products released into the environment
- 25247 : The contribution of volcanic ash in the Ca cycle in Japanese forest ecosystems.
Fiscal Year: 2019
- 24734 : Analysis and prediction of radioactive substances behavior in multimedia environment
- 24818 : Behavior and hazard assessment of indium derived from IT products released into the environment
- 24892 : The contribution of volcanic ash in the Ca cycle in Japanese forest ecosystems.
Fiscal Year: 2018
- 24326 : Analysis and Prediction of Radioactive Substances Behavior in Multimedia Environment
- 24390 : Influence of volcanic ash in soils on Ca cycling in forest ecosystems
- 24485 : Pollutant dispersion mechanisms of trace metals derived from waste electrical and electronic equipment in water and soil environments
Fiscal Year: 2017
- 23866 : Analysis and Prediction of Radioactive Substances Behavior in Multimedia Environment
- 24029 : Influence of volcanic ash in soils on Ca cycling in forest ecosystems
- 24089 : Pollutant dispersion mechanisms of trace metals derived from waste electrical and electronic equipment in water and soil environments
Fiscal Year: 2016
- 23429 : Analysis and Prediction of Radioactive Substances Behavior in Multimedia Environment
- 23508 : Evaluation of selective extraction method for available radiocesium in soils.
- 23533 : Influence of volcanic ash in soils on Ca cycling in forest ecosystems
Fiscal Year: 2015
- 23010 : Assessment of functions and integrity of basin ecosystems
- 23011 : Evaluation on linkage between ecosystem function and environmental factor in river basin
- 23309 : Evaluation of selective extraction method for available radiocesium in soils.
Fiscal Year: 2014
- 22598 : Assessment of functions and integrity of basin ecosystems
- 22599 : Evaluation on linkage between ecosystem function and environmental factor in river basin
- 22812 : Analysis and Prediction of Radioactive Substances Behavior in Multimedia Environment
Fiscal Year: 2013
- 22182 : Assessment of functions and integrity of basin ecosystems
- 22183 : Evaluation on linkage between ecosystem function and environmental factor in river basin
Fiscal Year: 2012
- 21753 : Assessment of functions and integrity of basin ecosystems
- 21754 : Evaluation on linkage between ecosystem function and environmental factor in river basin
- 22005 : Speciation of calcium in terrestrial water and its role in element cycle in forested ecosystem
- 22006 : Pollution of urban soil with atmospheric deposited metals in Kanto area
- 22040 : Evaluation and prediction of nitrogen load from nitrogen saturated forest area
Fiscal Year: 2011
- 21312 : Evaluation on linkage between ecosystem function and environmental factor in river basin
- 21706 : Pollution of urban soil with atmospheric deposited metals in Kanto area
- 21719 : Speciation of calcium in terrestrial water and its role in element cycle in forested ecosystem
Fiscal Year: 2010
- 21006 : Speciation of calcium in terrestrial water and its role in element cycle in forested ecosystem
- 21007 : Pollution of urban soil with atmospheric deposited metals in Kanto area.
- 21013 : Behaviours of rare metals in soil-plant systems
- 21025 : Terrestrial Monitoring
- 21258 : Evaluation and prediction of nitrogen load from nitrogen saturated forest area and development of its reduction scenario
Fiscal Year: 2009
- 20517 : Behaviours of rare metals in soil-plant systems
- 20650 : Terrestrial Monitoring
Fiscal Year: 2008
- 20000 : Transport of various forms of dissolved aluminum from forest soil to stream water.
- 20001 : Quantification of metal distribution in urban soil.
- 20002 : Speciation of calcium in terrestrial water and its role in element cycle in forested ecosystem.
- 20101 : Study about the behavior and natural abundance of the next generation use type elements in soil
Fiscal Year: 2007
- 10450 : Transport of various forms of dissolved aluminum from forest soil to stream water.
- 10640 : Investigation of metal distribution patterns in urban soil.
- 10665 : Study about the behavior and natural abundance of the next generation use type elements in soil
Fiscal Year: 2006
- 10105 : Influence of natural and soil organic matter on the dynamics of heavy metals in a contaminated soil
- 10171 : Transport of various forms of dissolved aluminum from forest soil to stream water.
Fiscal Year: 2005
- 9328 : Global Environmental Monitoring
- 9666 : Transport of various forms of dissolved aluminum from forest soil to stream water.
Fiscal Year: 2004
- 9062 : Element cycle response to the dynamic change of environmental loads from land in the East China Sea
- 9086 : Transport of dissolved aluminum from forest soil to stream and lake water
Fiscal Year: 2003
- 8647 : Research on the Behavior of Inorganic Pollutants in the Soil Environment
- 8792 : Element cycle response to the dynamic change of environmental loads from land in the East China Sea
- 8806 : Transport of dissolved aluminum from forest soil to stream and lake water
Fiscal Year: 2002
- 8428 : Research on the Behavior of Inorganic Pollutants in the Soil Environment
- 8588 : Element cycle response to the dynamic change of environmental loads from land in the East China Sea
Fiscal Year: 2001
- 8051 : D-1 Research on dynamics of environmental pollution through the Changjiang River and its effect on marine ecosystem in EastChina Sea.
- 8090 : Seasonal variation of dissolved aluminum concentration in neutral lake.
- 8169 : Fundamental study on recovery of pollutants using novel extraction media
- 8211 : Research on the Behavior of Inorganic Pollutants in the Soil Environment

Research Result (Publication)

all
Original Paper
Other Publications

Other Publications
Volcanic ash in soil is a source of strontium in stream water in chert-bedrock forests in Mount Amamaki, Japan

Presenter : Koshikawa-K.m., Watanabe Mirai., Sase H., Morohashi M., Takahashi M., Tanikawa T., Takahashi M., Takahashi A., Murata T., Takamatsu T., Miura S., Shin K.C., Nakano T.
Title : , Ecological Research, 40(3):365-376 (2025)
Original Paper
Kaolinite sorption isotherms of benzalkonium and dialkyldimethylammonium compounds under dilute conditions investigated by direct and passive sampling methods

Presenter : Endo S., Do T., Yoshii S., Koshikawa-K.M., Matsuzawa S.
Title : , Environmental Science: Processes & Impacts, 27:2252-2261 (2025)
Original Paper
Exploring simple ways to avoid collecting highly 137Cs-contaminated Aralia elata buds for the revival of local wild vegetable cultures

Presenter : Sakai M., Watanabe Mirai., Koshikawa-K.m., Tanaka A., Takahashi A., Takechi S., Takagi M., Tsuji T., Tsuji H., Takeda T., Jo J., Tamaoki M., Hayashi S.
Title : , PLOS ONE, 19(4):e0292206 (2024)
Original Paper
Explaining the variation in 137Cs aggregated transfer factor for wild edible plants as a case study on Koshiabura (Eleutherococcus sciadophylloides) buds

Presenter : Hayashi S., Watanabe Mirai., Koshikawa-K.m., Takada M., Takechi S., Takagi M., Sakai M., Tamaoki M.
Title : , Scientific Reports, 13(14162): (2023)
Original Paper
Comparison of 0.1 M Stable CsCl and 1 M NH4NO3 as an Extraction Reagent to Evaluate Cs-137 Mobility in Soils

Presenter : Koshikawa-K.M., Watanabe Mirai., Tamaoki M., Ito S., Takamatsu T., Murata T., Saito T., Hayashi S.
Title : , Analytical Sciences, 35(2):153-158 (2019)
Original Paper
137Cs transfer from canopies onto forest floors at Mount Tsukuba in the four years following the Fukushima nuclear accident

Presenter : Nishikiori T., Watanabe Mirai., Koshikawa-K.M., Watanabe K., Yamamura S., Hayashi S.
Title : , Science of the Total Environment, 659:783-789 (2019)
Original Paper
Long-term observations of the vertical distributions of mineral elements and phosphorus dynamics in sediments in a shallow eutrophic lake in Japan

Presenter : Shimotori K., Imai A., Kohzu A., Komatsu K., Koshikawa-K.M., Hayashi S., Watanabe Mirai.
Title : , Journal of Soils and Sediments, 19(3):1566-1575 (2019)
Original Paper
Migration of Ag, In, Sn, Sb, and Bi and Their Chemical Forms in a Monolith Lysimeter Filled with a Contaminated Andosol

Presenter : Murata T., Koshikawa-K.M., Watanabe Mirai., Hou H., Takamatsu T.
Title : , Archives of Environmental Contamination and Toxicology, 74(1):154-169 (2018)
Original Paper
Coniferous coverage as well as catchment steepness influences local stream nitrate concentrations within a nitrogen-saturated forest in central Japan

Presenter : Watanabe Mirai., Miura S., Hasegawa S., Koshikawa-K.M., Takamatsu T., Kohzu A., Imai A.
Title : , Science of the Total Environment, 636:539-546 (2018)
Original Paper
Varying sensitivity of mountainous streamwater base-flow NO3− concentrations to N deposition in the northern suburbs of Tokyo

Presenter : Nishina K., Watanabe Mirai., Koshikawa-K.M., Takamatsu T., Morino Y., Nagashima T., Soma K., Hayashi S.
Title : , Scientific Reports, 7:7701 (2017)
Original Paper
Using isotopes to determine the contribution of volcanic ash to Sr and Ca in stream waters and plants in a granite watershed, Mt. Tsukuba, central Japan

Presenter : Koshikawa-K.M., Watanabe Mirai., Shin K., Nishikiori T., Takamatsu T., Hayashi S., Nakano T.
Title : , Environmental Earth Sciences, 75(501): (2016)
Original Paper
Microbial nitrification in throughfall of a Japanese cedar associated with archaea from the tree canopy

Presenter : Watanabe K., Kohzu A., Suda W., Yamamura S., Takamatsu T., Takenaka A., Koshikawa-K.M., Hayashi S., Watanabe Mirai.
Title : , SpringerPlus, 5(1596): (2016)
Original Paper
Uptake and translocation of radiocesium in cedar leaves following the Fukushima nuclear accident

Presenter : Nishikiori T., Watanabe Mirai., Koshikawa-K.M., Takamatsu T., Ishii Y., Ito S., Takenaka A., Watanabe K., Hayashi S.
Title : , Science of the Total Environment, 502:611-616 (2015)
Original Paper
Microbial biomass and nitrogen transformations in surface soils strongly acidified by volcanic hydrogen sulfide deposition in Osorezan, Japan

Presenter : Watanabe Mirai., Yamamura S., Takamatsu T., Koshikawa-K.M., Hayashi S., Murata T., Saito-S.S., Inubushi K., Sakamoto K.
Title : , Soil Sci.Plant Nutr., 56(1):123-132 (2010)
Original Paper
Weathering and dissolution rates among Pb shot pellets of differing elemental compositions exposed to various aqueous and soil conditions

Presenter : Takamatsu T., Murata T., Koshikawa-K.M., Watanabe Mirai.
Title : , Arch.Environ.Contam.Toxicol., 59(1):91-99 (2010)
Original Paper
Pollution of montane soil with Cu, Zn, As, Sb, Pb, and nitrate in Kanto, Japan.

Presenter : Takamatsu T., Watanabe Mirai., Koshikawa-K.M., Murata T., Yamamura S., Hayashi S.
Title : , Sci.Total Environ., 408(8):1932-1942 (2010)
Original Paper
Dry deposition of acidic air pollutants to tree leaves, determined by a modified leaf-washing technique

Presenter : Watanabe Mirai., Takamatsu T., Koshikawa-K.M., Yamamura S., Inubushi K.
Title : , Atmos.Environ., 42(32):7339-7347 (2008)
Distribution of dissolved and particulate elements in the Yangtze estuary in 1997-2002: Background data before the closure of the Three Gorges Dam

Presenter : KOSHIKAWA Masami, ,
Title : , Estuar.,Coast.Shelf Sci., 71:26-36 (2007)
Speciation of aluminum in circumneutral Japanese stream waters

Presenter : KOSHIKAWA Masami, , Watanabe Mirai.
Title : , Appl.Geochem., 22:1209-1216 (2007)
Simultaneous determination of atmospheric sulfur and nitrogen oxides using a battery-operated portable filter pack sampler

Presenter : Watanabe Mirai., Takamatsu T., Koshikawa-K.M., Sakamoto K.(*1), Inubushi K.(*1)
Title : , J.Environ.Monit., 8:167-173 (2006)
Concentrations of Ag,In,Sn,Sb and Bi,and their chemical fractionation in typical soils in japan

Presenter : Hou H.(*1), Takamatsu T., Koshikawa-K.M., Hosomi M.(*2)
Title : , Eur.J.Soil Sci., 57:214-227 (2006)
Atmospheric acidic pollutants at Mt.Tsukuba,Japan,determined using a portable filter pack sampler

Presenter : Watanabe Mirai., Takamatsu T., Koshikawa-K.M., Sakamoto K.(*1), Inubushi K.(*1)
Title : , Bull.Chem.Soc.Jpn., 79:1407-1409 (2006)
Distribution of pH and chemical components in Mizorogaike,a pond with a floating-mat bog

Presenter : KOSHIKAWA Masami
Title : , Limnology, 6:27-37 (2005)
Migration of silver,indium,tin,antimony,and bismuth and variations in their chemical fractions on addition to uncontaminated soils

Presenter : Hou H.(*1), Takamatsu T., Koshikawa-K.M., Hosomi M.(*1)
Title : , Soil Sci., 170:624-639 (2005)
Trace metals in bulk precipitation and throughfall in a suburban area of Japan

Presenter : Hou H.(*1), Takamatsu T., Koshikawa-K.M., Hosomi M.(*1)
Title : , Atmos.Environ., 39:3583-3595 (2005)
Copper complexing capacity of throughfall and its environmental effect

Presenter : Hou H.(*1), Takamatsu T., Koshikawa-K.M., Hosomi M.(*2)
Title : , Water,Air,Soil Pollut., 162:229-245 (2005)
-

Presenter : , MURATA Tomoyoshi, KOSHIKAWA Masami
Title : , 次世代技術利用金属の環境溶出特性と土壌中動態の解明に関する研究平成16年度廃棄物処理等科学研究費補助金研究成果報告書(高松武次郎編著,(独)国立環境研究所,環境省受託報告書,138p.), 1-138 (2005)
-

Presenter : , MURATA Tomoyoshi, KOSHIKAWA Masami
Title : , 次世代技術利用金属の環境溶出特性と土壌中動態の解明に関する研究平成16年度廃棄物処理等科学研究費補助金総合研究成果報告書(高松武次郎編著,(独)国立環境研究所,環境省受託報告書,154p.), 1-154 (2005)
Effects of Pb,Cu,Sb,In and Ag contamination on the proliferation of soil bacterial colonies,soil dehydrogenase activity,and phospholipid fatty acid profiles of soil microbial communities

Presenter : Murata T., Koshikawa-K.M., Takamatsu T.
Title : , Water,Air,Soil Pollut., 164(1/4):103-118 (2005)
Restoration of paleo-environment by analysis of Lake Baikal sediment-uranium as a possible indicator of climatic change

Presenter : Takamatsu T., Koshikawa-K.M., Masuzawa T.(*1), Takada J.(*2)
Title : , KURRI Prog.Rep.2000,Sect.1, 101 (2001)

Kaolinite sorption isotherms of benzalkonium and dialkyldimethylammonium compounds under dilute conditions investigated by direct and passive sampling methods

Presenter : Endo S., Do T., Yoshii S., Koshikawa-K.M., Matsuzawa S.
Title : , Environmental Science: Processes & Impacts, 27:2252-2261 (2025)
Exploring simple ways to avoid collecting highly 137Cs-contaminated Aralia elata buds for the revival of local wild vegetable cultures

Presenter : Sakai M., Watanabe Mirai., Koshikawa-K.m., Tanaka A., Takahashi A., Takechi S., Takagi M., Tsuji T., Tsuji H., Takeda T., Jo J., Tamaoki M., Hayashi S.
Title : , PLOS ONE, 19(4):e0292206 (2024)
Explaining the variation in 137Cs aggregated transfer factor for wild edible plants as a case study on Koshiabura (Eleutherococcus sciadophylloides) buds

Presenter : Hayashi S., Watanabe Mirai., Koshikawa-K.m., Takada M., Takechi S., Takagi M., Sakai M., Tamaoki M.
Title : , Scientific Reports, 13(14162): (2023)
Comparison of 0.1 M Stable CsCl and 1 M NH4NO3 as an Extraction Reagent to Evaluate Cs-137 Mobility in Soils

Presenter : Koshikawa-K.M., Watanabe Mirai., Tamaoki M., Ito S., Takamatsu T., Murata T., Saito T., Hayashi S.
Title : , Analytical Sciences, 35(2):153-158 (2019)
137Cs transfer from canopies onto forest floors at Mount Tsukuba in the four years following the Fukushima nuclear accident

Presenter : Nishikiori T., Watanabe Mirai., Koshikawa-K.M., Watanabe K., Yamamura S., Hayashi S.
Title : , Science of the Total Environment, 659:783-789 (2019)
Long-term observations of the vertical distributions of mineral elements and phosphorus dynamics in sediments in a shallow eutrophic lake in Japan

Presenter : Shimotori K., Imai A., Kohzu A., Komatsu K., Koshikawa-K.M., Hayashi S., Watanabe Mirai.
Title : , Journal of Soils and Sediments, 19(3):1566-1575 (2019)
Migration of Ag, In, Sn, Sb, and Bi and Their Chemical Forms in a Monolith Lysimeter Filled with a Contaminated Andosol

Presenter : Murata T., Koshikawa-K.M., Watanabe Mirai., Hou H., Takamatsu T.
Title : , Archives of Environmental Contamination and Toxicology, 74(1):154-169 (2018)
Coniferous coverage as well as catchment steepness influences local stream nitrate concentrations within a nitrogen-saturated forest in central Japan

Presenter : Watanabe Mirai., Miura S., Hasegawa S., Koshikawa-K.M., Takamatsu T., Kohzu A., Imai A.
Title : , Science of the Total Environment, 636:539-546 (2018)
Varying sensitivity of mountainous streamwater base-flow NO3− concentrations to N deposition in the northern suburbs of Tokyo

Presenter : Nishina K., Watanabe Mirai., Koshikawa-K.M., Takamatsu T., Morino Y., Nagashima T., Soma K., Hayashi S.
Title : , Scientific Reports, 7:7701 (2017)
Using isotopes to determine the contribution of volcanic ash to Sr and Ca in stream waters and plants in a granite watershed, Mt. Tsukuba, central Japan

Presenter : Koshikawa-K.M., Watanabe Mirai., Shin K., Nishikiori T., Takamatsu T., Hayashi S., Nakano T.
Title : , Environmental Earth Sciences, 75(501): (2016)
Microbial nitrification in throughfall of a Japanese cedar associated with archaea from the tree canopy

Presenter : Watanabe K., Kohzu A., Suda W., Yamamura S., Takamatsu T., Takenaka A., Koshikawa-K.M., Hayashi S., Watanabe Mirai.
Title : , SpringerPlus, 5(1596): (2016)
Uptake and translocation of radiocesium in cedar leaves following the Fukushima nuclear accident

Presenter : Nishikiori T., Watanabe Mirai., Koshikawa-K.M., Takamatsu T., Ishii Y., Ito S., Takenaka A., Watanabe K., Hayashi S.
Title : , Science of the Total Environment, 502:611-616 (2015)
Microbial biomass and nitrogen transformations in surface soils strongly acidified by volcanic hydrogen sulfide deposition in Osorezan, Japan

Presenter : Watanabe Mirai., Yamamura S., Takamatsu T., Koshikawa-K.M., Hayashi S., Murata T., Saito-S.S., Inubushi K., Sakamoto K.
Title : , Soil Sci.Plant Nutr., 56(1):123-132 (2010)
Weathering and dissolution rates among Pb shot pellets of differing elemental compositions exposed to various aqueous and soil conditions

Presenter : Takamatsu T., Murata T., Koshikawa-K.M., Watanabe Mirai.
Title : , Arch.Environ.Contam.Toxicol., 59(1):91-99 (2010)
Pollution of montane soil with Cu, Zn, As, Sb, Pb, and nitrate in Kanto, Japan.

Presenter : Takamatsu T., Watanabe Mirai., Koshikawa-K.M., Murata T., Yamamura S., Hayashi S.
Title : , Sci.Total Environ., 408(8):1932-1942 (2010)
Dry deposition of acidic air pollutants to tree leaves, determined by a modified leaf-washing technique

Presenter : Watanabe Mirai., Takamatsu T., Koshikawa-K.M., Yamamura S., Inubushi K.
Title : , Atmos.Environ., 42(32):7339-7347 (2008)

Volcanic ash in soil is a source of strontium in stream water in chert-bedrock forests in Mount Amamaki, Japan

Presenter : Koshikawa-K.m., Watanabe Mirai., Sase H., Morohashi M., Takahashi M., Tanikawa T., Takahashi M., Takahashi A., Murata T., Takamatsu T., Miura S., Shin K.C., Nakano T.
Title : , Ecological Research, 40(3):365-376 (2025)

Research Result (Presentation)

all
Research Presentation
Research Lecture

Research Presentation
Sorption of Cationic Surfactants by Clay Mineral and Organic Matter: Isotherm Measurements with Conventional Batch and New Passive Sampling Methods

Presenter : Endo S., Do T., Yoshii S., Koshikawa-K. M., Katakura Y., Matsuzawa S.
Name of Society : SETAC Europe 35th Annual Meeting (2025)
Name of Proceedings : Abstracts, 213
Research Presentation
Contribution of volcanic ash to Ca and Sr in stream waters in chert and granite watersheds in Japan.

Presenter : Koshikawa-K.m., Watanabe Mirai., Sase H., Morohashi M., Takahashi M., Tanikawa T., Takahashi M., Murata T., Takamatsu T., Miura S., Shin K.C., Nakano T.
Name of Society : the 10th International Conference on Acid Deposition (Acid Rain 2020) (2023)
Name of Proceedings : Abstracts, 160
Research Presentation
Using Sr isotopes to determine the contribution of volcanic ash to Sr and Ca in stream waters in a chert watershed

Presenter : Koshikawa-K.M., Watanabe Mirai., Murata T., Takamatsu T., Miura S., Ki-Cheol Shin, Takanori Nakano
Name of Society : Japan Geoscience Union Meeting 2019 (2019)
Name of Proceedings : Abstracts
Research Presentation
Selective determination of easily-available 137Cs in soil using 0.1 mol L-1 CsCl as an extraction reagent

Presenter : Koshikawa-K.M., Watanabe Mirai., Ito S., Takamatsu T., Murata T., Hayashi S.
Name of Society : 13th International Conference on the Biogeochemistry of Trace Elements (2015)
Name of Proceedings : ABSTRACT BOOK, 184
Research Lecture
Surveys of contamination by Pb shot and establishment of guidelines to prevent contamination in shooting ranges

Presenter : Murata T., Koshikawa-K.M., Watanabe Mirai., Takamatsu T.
Name of Society : Role of soils and materials to establish sustainable Asian Mega Cities. Kenkyukan Project Work Shop (2015)
Name of Proceedings : -
Research Presentation
Microbial community structure on tree leaves

Presenter : Watanabe K. , Watanabe Mirai., Suda W., Koshikawa-K.M., Yamamura S., Nishikiori T., Takenaka A., Tada C., Seiwa K., Hayashi S.
Name of Society : The 28th Annual Meeting of the Japanese Society of Microbial Ecology (2012)
Name of Proceedings : Abstracts, 153
Research Presentation
Contribution of volcanic ash on base cation cycles in the Mt. Tsukuba forest ecosystem of Kanto, Japan as interpreted by strontium isotopes.

Presenter : Koshikawa-K.M., Watanabe Mirai., Shin K.C., Takamatsu T., Hayashi S., Nakano T.
Name of Society : 2012 ASLO aquatic sciences meeting (2012)
Name of Proceedings : Abstracts
Dissolved chemical components in Lake Mizorogaike,a pond with a floating mat

Presenter : Koshikawa-K.M.
Name of Society : 9th Int.Conf.Conserv.& Manage.Lake (2001)
Name of Proceedings : Proceedings, 5

Contribution of volcanic ash to Ca and Sr in stream waters in chert and granite watersheds in Japan.

Presenter : Koshikawa-K.m., Watanabe Mirai., Sase H., Morohashi M., Takahashi M., Tanikawa T., Takahashi M., Murata T., Takamatsu T., Miura S., Shin K.C., Nakano T.
Name of Society : the 10th International Conference on Acid Deposition (Acid Rain 2020) (2023)
Name of Proceedings : Abstracts, 160
Using Sr isotopes to determine the contribution of volcanic ash to Sr and Ca in stream waters in a chert watershed

Presenter : Koshikawa-K.M., Watanabe Mirai., Murata T., Takamatsu T., Miura S., Ki-Cheol Shin, Takanori Nakano
Name of Society : Japan Geoscience Union Meeting 2019 (2019)
Name of Proceedings : Abstracts
Selective determination of easily-available 137Cs in soil using 0.1 mol L-1 CsCl as an extraction reagent

Presenter : Koshikawa-K.M., Watanabe Mirai., Ito S., Takamatsu T., Murata T., Hayashi S.
Name of Society : 13th International Conference on the Biogeochemistry of Trace Elements (2015)
Name of Proceedings : ABSTRACT BOOK, 184
Sorption of Cationic Surfactants by Clay Mineral and Organic Matter: Isotherm Measurements with Conventional Batch and New Passive Sampling Methods

Presenter : Endo S., Do T., Yoshii S., Koshikawa-K. M., Katakura Y., Matsuzawa S.
Name of Society : SETAC Europe 35th Annual Meeting (2025)
Name of Proceedings : Abstracts, 213
Microbial community structure on tree leaves

Presenter : Watanabe K. , Watanabe Mirai., Suda W., Koshikawa-K.M., Yamamura S., Nishikiori T., Takenaka A., Tada C., Seiwa K., Hayashi S.
Name of Society : The 28th Annual Meeting of the Japanese Society of Microbial Ecology (2012)
Name of Proceedings : Abstracts, 153
Contribution of volcanic ash on base cation cycles in the Mt. Tsukuba forest ecosystem of Kanto, Japan as interpreted by strontium isotopes.

Presenter : Koshikawa-K.M., Watanabe Mirai., Shin K.C., Takamatsu T., Hayashi S., Nakano T.
Name of Society : 2012 ASLO aquatic sciences meeting (2012)
Name of Proceedings : Abstracts

Surveys of contamination by Pb shot and establishment of guidelines to prevent contamination in shooting ranges

Presenter : Murata T., Koshikawa-K.M., Watanabe Mirai., Takamatsu T.
Name of Society : Role of soils and materials to establish sustainable Asian Mega Cities. Kenkyukan Project Work Shop (2015)
Name of Proceedings : -

KOSHIKAWA Masami

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