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Last update: 20/Oct/2004

Researcher information

Name Eitaro Wada (given name, family name)
Sex Male
Date of Birth September 21, 1939.

Phone 81-(0)45-778-5590
Fax 81-(0)45-778-5706

Research Interests


(1) Biogeochemistry

(2) Isotope ecosystem

Program Director, Ecosystem Change Research Program

I have become the program director of the Ecosystem Change Research Program on the 1st of August of this year 2004. This program was established almost five years ago (October 1, 1999) under the leadership of Prof. Yoshifumi Yasuoka. Five years of efforts by the Program members have been performed in the field of ecosystem modeling, which is a rather new field of science. The following research subjects are now undertaken.

ú@jThe ecosystem process model on carbon cycling (Sim-CYCLE) has been developed to evaluate the influence of terrestrial ecosystem change on climatic/environmental change. Modeling of the effects of climating changes on vegetation, forest dynamics, and the installation of Sim-CYCLE to the FRCGC integrated model for global change are also undertaken.

úA)Marine biological research has been focused both on changes of temporal/spatial patterns in oceanic ecosystems and a modeling of oceanic food web ecosystems.

úBjIn addition, ecosystem change detection and data assimilation have been conducted by using satellite remote sensing. Satellite observational methods have been improved for assessing the spatial distribution and dynamics of ecosystem-related variables.

Although the basic knowledge on temporal and spatial phenomena remains unclear, because of the highly complex characteristics of natural ecosystems, our program has made significant progress during the past five years.

Here, I would like to introduce my experiences for conducting the ecological projects supported by MEXT and JSPS concerned with global environmental issues. IGBP-MEXT(Second Term) was conducted from fiscal year 1997 to 2001 with the project title of eResponse of Terrestrial Watershed Ecosystem to Global Changef along a line of IGBP-GCTE-TEMA in Monsoon Asia. In this project, I was a project leader and Prof. T.Kohyama, Hokkaido University was a sub-leader with the project office at the Institute for Hydrosphere-Atmosphere Sciences, Nagoya University. Responses of the watershed to elevated CO2 concentration were investigated along the expanding spatial scale from a leaf, shoot, tree, forest/soil to a stream, river and lake.

Here, IGBP, GCTE and TEMA denote International Geophere Biosphere Program, Global Change and Terrestrial Ecosystem, and Terrestrial Ecosystem in Monsoon Asia, respectively. IGBP was initiated in 1991 and succeeded its first phase of almost 10 years, over 11 research areas concerning carbon cycling. Almost all young scientists in our ecosystem program probably gained some scientific experience in the implementation of IGBP program during past ten years.

Two other projects were also conducted simultaneously from 1997 to 2001. One is JSPS-project on the environmental conservation in Asian regions eResearch for the Future Program with emphasis on interactive cycles between humans and nature in the lake Biwa-Yodo River Watershedf. The second concerned the biodiversity funded by a MEXT Grant-in Aid for Creative Basic Research. I participated as a PL for the former and a core member for the latter. As the chief of the Center for Ecological Research, KyotoUniversity from 1996 to 2000, I was quite busy with the administrative duties as well as these research projects. However, during these years, I learned much concerning global environmental issues, carbon and nitrogen cycling, biodiversity, and sociobiogeochemistry, which is a part of social sciences. The project on the Lake Biwa-Yodo River watershed is still continuing in Research Institute for Humanity and Nature, my previsions institute.

On the basis of these project experiences, I would like to promote the activities of our Ecosystem Program with a broad perspective concerning global warming and the interactive cycles between humans and nature.

The figure in this report is a schematic one which illustrates a framework of research expected in our program, with the location indicated for each project undertaking in this fiscal year. Red-colored key words correspond to my new aspects in our program. The following points will be taken into consideration as important items.

1) It is rather easy to decide a project title. However it is very difficult to clarify its practical purposes with practical implementations.

2) The inter-disciplinary complex between natural and social sciences could be understood and allied within an individual. Integration over different disciplines could be more effectively promoted with progress in mutual understanding by means of cooperative studies.

3) Applied and basic studies can be applied to social dimensions, for example, by introducing an informative index or modeling for assessing the adaptive management of P-D-C-A cycle.

The new paradigm on temporal and spatial dimensions is created in the field of ecology by combining satellite information, the Earth Simulater system and ecosystem modeling. Examination of our proposed model could be conducted by using time-integrated parameters such as stable isotope ratio and genetic sequences. The second phase of our program(2004-2009) will focus on the following; elucidation of fundamental ecosystem processes that govern the ecosystem response to climatic global change, 2) the installation of ecosystem models to the global integrated model and 3) intensive scientific contributions to the social systems involving developments of diagnostic indicators and models. We will strive to develop pioneering research and achieve significant results in these fields.

Biography and Honor

Born in 1939. Received BS in 1962, MS in 1964 and Ph.D of Sci. in 1967 from the Department of Chemistry, the Tokyo University of Education, Ocean Research Institute The University of Tokyo, 1967-76; Chief,1976-89, and Director, 1989-1991, of the Mitsubishi Kasei Institute of Life Science; Prof. of Center for Ecological Research, Kyoto University; Professor of Institute for Humanity and Nature in Kyoto, 1991-Aug. 2004; Program Director of the Program Director of Ecosystem Change Research Program, Aug. 2004 to today. Recipient of Okada Prize of the Oceanographic Society of Japan Prize of Geochemical Society of Japan in 1995, Miyake Prize from Geochemical Association in 2002 , Honor Prof. of Kyoto University and Siberian Branch Russian Academy of Science in 2002.

Editorial Board

Isotoper Practice and Environmental HealthiGermanyj

Science in HandiRussiaj



  1. E. Wada(2002), New scope on sustainable watersheds in East Asia. DIWPA series Volume 3.
  2. E. Wada(2002), ŠÂ‹«Šw“ü–å3 ¢’n‹…¶‘ÔŠw£ Šâ”g‘“X 171pp(introduction to Geoecology)

Books under joint authorship

  1. ˆäã–¯“ñ¥˜a“c‰p‘¾˜Y•Ò’˜(1998) Šâ”guÀ ¢’n‹…ŠÂ‹«Šw£ ‘æ5Šªu¶•¨‘½—l«‚Æ‚»‚Ì•Û‘S£
    (Global Environmental Studies No.5 Biodiversity and its preservation )
  2. ˜a“c‰p‘¾˜YAˆÀ¬“NŽO•Ò’˜(1998) Šâ”guÀ ¢’n‹…ŠÂ‹«Šw£ ‘æ4Šª ¢…¥•¨Ž¿zŠÂŒv‚̕ω»v
    (Global Environmental Studies No.4 Water and Material Cycling j

Main papers

  1. ˜a“c‰p‘¾˜YA¼ìˆºŽqA‚’Õ¶l(2001)ˆÀ’蓯ˆÊ‘Ì”ä‚Ì—˜—p(1)ŠÂ‹«‰ÈŠw[“Á‚ɐ…Œn‚ɂ‚¢‚Ä50:158s-165s.
    (Use of Stable Isotopes in Environmental Sciences with emphases on a watershed) Radioisotopes
  2. ˜a“c‰p‘¾˜YA¬ì“ށXŽqA‹{âm(2002)ƒoƒCƒJƒ‹ŒÎ:ˆÀ’蓯ˆÊ‘Δ䂩‚猩‚½Ž©‘R‚ÌŽÀŒ±Žº.
  3. ˜a“c‰p‘¾˜YA‘ɈÀˆê˜YA•º“¡•s“ñ•v(2003) •¨Ž¿zŠÂ‚Ɛ…Ž‘Œ¹[…Œn‚𒆐S‚Æ‚µ‚Ä. ƒGƒlƒ‹ƒM[¥Ž‘Œ¹24(1)
    (Material Cycling and Water Resource with emphasis on a watershed)Energy Resource
  4. ˜a“c‰p‘¾˜Y@(2004)ƒ‚ƒ“ƒSƒ‹‚Ì—V–q‚Æ‚»‚ÌŽ‘±«‚ÌŽÀ‘ԁ[•¨Ž¿zŠÂ‚©‚猩‚½ƒ‚ƒ“ƒSƒ‹‚Œ´
    ‰ÈŠw73(5):545-548@(Nomandism in Mongolia with emphasis on material cycling) Science
  5. C.Kato, T.Iwata and E.Wada (Prey use by web-building spider: stable isotope analyses of trophic flow
    at a forest-stream ecotone) Ecological Research, In press@

Field Research

@foreign countries

Malaysia (International Workshop)

Thailand (The 27th National Science and Technology Conference)

Mongolia (Research on Selenga River watershed)

Russia (Research on Lake Baikal)

Russia (SIAL-3 Workshop and Research on Lake Baikal)

@Japan (2003-)

Kyoto, Osaka prefectures (water quality, sediment in watershed of Seta River and 3 rivers including Mokuz, Katsura, Uji)

Shiga, Osaka, Kyoto prefectures (water quality, sediment in watershed of Yodo River and 3 rivers)

Kyoto, Osaka prefectures (water quality, sediment in watershed of Kamo River and Kouya River)

Shiga prefecture (Lake Biwa)

Part-time Teaching

Nagoya University Graduate School of Environmental Studies

Shinshu University Faculty of Textile Science & Technology

Nagoya University Graduate School of Environmental Studies

Kagawa University Faculty of Agriculture

Nagoya University Graduate School of Environmental Studies

Nara University of Education

Center for Ecological Research, Kyoto University

TOHO University Faculty of Science

Nara University of Education

Kanazawa University Faculty of Science

Committee Member

Advisory committee, Global Observation System (Research and Development, Science and Technology, Ministry of Education, Culture, Sports, Science and Technology)

YodoRiver Watershed committee (Ministry of Land, Infrastructure and Transport Kinki Regional Development Bureau)

Advisory committee, CREST, R&D of Hydrological System Modeling and Water Resources System (Japan Science and Technology Agency)

Executive committee/Research-planning committee (Center for Ecological Research,Kyoto University)

National Committee for MAB/Coordinating Committee for MAB < Dec.2003-Dec. 2005> (Japanese National Commission for UNESCO)

Administrative commissioner of Foundation for Riverfront Improvement and Restoration < Apr.2003-Mar. 2005>

Evaluation committee for 21st Century COE Program (Ministry of Education, Culture, Sports, Science and Technology)

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