Full Research

StageFR
Project No.R-06
Project NameManaging Environmental Risks to Food and Health Security in Asian Watersheds
Abbreviated TitleLakeHEAD (Food Risk Project)
Project LeaderKADA Ryohei
Research AxisResources Program
URLhtml http://www.chikyu.ac.jp/rihn/project/R-06.html
Key WordsEcological risk, Food and health security, Watershed management, Payment for Ecosystem Services, GIS based Risk Mapping

 

○Research Subject and Objectives

Objective

The general objective ofthis research is to study how ecological risks affect the sustainable linkagebetween agricultural and aquatic foods and public health. The study will focuson the social and natural science perspectives in a Southeast Asian watershed. Ecosystem services have been deteriorating owing to deforestation, increased human settlement,agricultural activities, and industrial development, which have causedsignificant ecological risks such as floods, soil erosion, and water pollutionin Southeast Asia. Furthermore, ecological risks critically affect agricultural and marine foods, which public health heavilydepends on. Foodrisks result from inadequate food supply as well as poor-quality andcontaminated food, which significantly contribute to public health risks. 

 

The project has four principal objectives: 1) to documentthe current levels and pathways of heavy metals pollution in the aquaticresources of Laguna Lake; 2) to investigate the health condition of localresidents and their perception of food risks; 3) to analyze the ecologicaleffects of agrochemical inputs, and their cumulative impact on food productionand relation to subsequent ecosystem deterioration; and 4) to describe land usechanges in the Laguna Lake area and their impact on water and material cycles,including impacts on sedimentation, groundwater level, and its quality.


Research Organization

Five research teams are comprised mainly of researchersat RIHN, Yokohama National University and University of the Philippines; theywork in collaboration with government agencies such as the Laguna LakeDevelopment Authorities (LLDA) and local government units. The EnvironmentalRisk Assessment Team identifies the exact sources of, and factors responsiblefor, particular pollutants in the food chain, utilizing stable isotope andother analytical techniques. The Socio-Economic Evaluation Team explores howmarket- and nonmarket-based instruments can be used to improve water quality,food security and public health. The Health Risk Evaluation Team describeshuman nutrition, history of disease, and life expectancy in the region,especially in relation to socio-economic dynamics. The Payment for EcosystemServices (PES) Team investigates the design of ecosystem service paymentprograms. The GIS-based Risk Mapping Team supports the entire research projectby creating a spatially-explicit database of key variables associated with riskin the food chain.

○Progress and Results in 2017

The major research outcome in 2013, as the final year of Full Research, can be summarized as follows:

 

 Environmental Risk Assessment:

Analysisof multiple elements of water and sediment samples were performed in Laguna deBay and its watershed.[The heavy metal concentration is generally high in river waters compared tolake waters. Human activities such as urban development and industry in thewestern region as well as an open garbage dumpsite, located upstream of thewatershed, couldbe major sources of pollutants and may help identify the close linkage betweenenvironmental degradation and food-health security. AGIS-based risk mapping and flood resilience study have also been conducted inthe Santa Rosa sub-watershed.

 

Health Risk Evaluation:

A series of cross-sectionalstudies were conducted to determine the relationship between specific exposures(socio-economic, nutrition, exposure to environmental pollutants; water,sanitation, and hygiene; and health systems) and certain health outcomes. Leadhas been identified as a pollutant that causes negative impacts such as chronicpoisoning and affects children’s intelligence quotient as well as otherabilities.

 

Designing Payment for EcosystemServices (PES):

The primary objective of the PES group isto investigate the design of a cost-effective PES program to achievesustainable watershed management in the Laguna de Bay region in thePhilippines. Our results show that there is significant variation in farmers’opportunity cost of PES participation. This suggests that PES should have aflexible payment mechanism to ensure the cost-effectiveness of resourceconservation programs.

 

Conducting “Yaman ng Lawa (YNL)” SocialExperiment:

The “Yaman ng Lawa” (YNL, blessings of lake in Tagalog) Programhas been conducted since April 2012. It is a trans-disciplinary watershed researchproject that involves participatory and community-based social action researchincorporating local knowledge. Theprogram has been challenged to combat lake degradation and to restore localfish habitat and population as well as the livelihood of fisher folks. Thisproject has inspired the renewal of the practice of the traditional “BayanihanSpirit” (Collective Volunteerism).

○Project Members

KADA Ryohei ( Research Institute for Humanity and Nature,Professor,Environmental Economics )

MASUDA Tadayoshi ( Research Institute for Humanity and Nature,Senior Researcher,Agricultural Resource Economics )

YAOTA Kiyoyuki ( Research Institute for Humanity and Nature,Researcher,Spatial Econometrics, GIS, Remote Sensing )

SAITO Satoshi ( Ehime University,Assistant Professor,Stable Isotope Earth Science )

NAKANO Takanori ( Research Institute for Humanity and Nature,Professor,Isotopic Environmental Science )

ARIMA Makoto ( Graduate School of Environment and Information Sciences, Yokohama National University,,Professor,Earth Science )

YUMOTO Takakazu ( Primate Research Institute Kyoto University,Professor,Forest Ecology )

RAZAFINDRABE Bam H.N ( University of the Ryukyus,Associate Professor,Disaster Risk Management )

MASUNAGA Shigeki ( Graduate School of Environment and Information Sciences, Yokohama National University,Professor,Environmental Chemistry )

MIZUSHIMA Shunsaku ( Graduate School of Medical Sciences, Yokohama City University,Professor,Preventive Epidemiology )

TANAKA Katsuya ( Research Center for Sustainability and Environment, Shiga University,Associate Professor,Resource Economics )

NAKAI Satoshi ( Graduate School of Environment and Information Sciences, Yokohama National University,Professor,Environmental Risk Epidemiology; Epidemiological Evaluation of Chemicals )

NAGAI Takashi ( National Institute of Agro-Environmental Sciences,Researcher,Organic Chemistry Risk Analysis )

TAN, J. Galvez ( Medical School, University of the Philippines at Manila,Professor,Public Health )

RANOLA, R.F. ( College of Agriculture, University of the Philippines at Los Banos,Professor,Resource Economics )

CONCEPCION, R.N. ( College of Agriculture, University of the Philippines at Los Banos,Visiting Professor,Environmental & Resource Economics )

BORJA, A,C.SANTOS ( Research Department, Lake Laguna Development Authority,Director,Biological Limnology )

MOLINA, V.B. ( Medical School, University of the Philippines at Manila,Professor,Public Health )

PANGANIBAN L.C.R. ( Medical School, University of the Philippines at Manila,Professor,Environmental Epidemiology )

ZAFARALLA Macrina T. ( College of Agriculture, University of the Philippines at Los Banos,Professor,Biology, Water Quality Assessment )

MACANDOG Damasa ( College of Agriculture, University of the Philippines at Los Banos,Professor,Plant Ecology, Evaluation of Soil Erosion )

○Future Themes

The following topics are among the most important issues to be further researched:

Theultimate goal of this project is to translate scientific evidence regardingenvironmental risks into specific policies or programs at different levels toreduce pollutants and human waste. One of the approaches explored by thisproject includes working closely with the local government units as criticalpolitical entities to formulate and implement policies to address human wasteissues. In Santa Rosa City, the mayor is supportive ofthe project and has shown very strong commitment and political will toimplement and adopt LakeHEAD-initiated activities and strategies to manageenvironmental risks to food and health security.

Thehealth damage caused by exposure to heavy metals is chronic in nature. Whenhealth symptoms manifest, the disease is usually in the later stages and someirreversible health damage might have occurred already. Therefore, preventivemeasures for heavy metal exposure through environmental and food risks are veryimportant aspects of this project. We have identified significant health risksdue to heavy metals associated with long-term fish consumption, which has beenvalidated by relatively low IQ scores of children with blood lead levels >10µg/dL. An initial measure to prevent damage was to engage the stakeholders indiscussing environmental health issues through the community forum in 2012.

We consider that the implementation of thisproject in the Philippines is very timely because it started at a time whendecision makers in local and national governments were fully aware of theimportance of environmental health and the need to restore the damagedenvironment in the Laguna Lake region. The support of local governmentexecutives at the project sites is overwhelming, which motivates the projectresearchers and scientists. In addition, the present manager of the Laguna LakeDevelopment Authority is supportive of the project; incidentally, he is theadviser to the Philippine president on environmental issues.

PES (payment for ecosystem services) has been widely recognized as a viableoption to mitigate land-related non-point source pollution including waterquality issues. Our research results strongly indicate that a well-designed PEScan mitigate the problem at lower costs. PES analysis has been conductedthrough collaboration with other teams, including environmental and health riskteams. PES-based policy analysis is also expected to contribute to thereduction of various risks and to water quality improvement of Laguna de Bay.

Books

【Authored/Co-authored】

Cynthia Caburnay Buen, Dalton Erick BALTAZAR, Roberto RANOLA Jr. at Ryohei KADA 2018,03 MATH ng Epektibong Pamamahala sa YAMAN NG LAWA. Research Institute for Humanity and Nature, Kyoto, Japan, 34pp. (Other) Tagalog

Bustanul Arifin, Slamet Budi Yuwono, Hanaung Ismono 2018,03 Pengendalian Risiko Lingkungan di DAS Sekampung, Lampung. Kerjasama Universitas Lampung(UNILA), Research Institute for Humanity and Nature, Indonesia dengan and Japan, 44pp. (Other) Indonesian

【Chapters/Sections】

Ryohei kada 2012 Why is change to satoyama and satoumi a concern?. Satoyama- Satoumi Ecosystems and Human Well-Being Socio-Ecological Production Landscapes of Japan. United Nations University Press, Shibuya-ku, Tokyo, pp.125-154.

KADA, Ryohei 2010,07 Chapter 2. Revitalization of Agriculture and Forestry: A Perspective from Agricultural Economics. Satoru SADOHARA (ed.) Establishing a Common Platform for Geospatial-temporal Information Collaboratioon through Visualization of Environmental Information. University of Tokyo Press, Tokyo. (in Japanese)

Editing

【Editing / Co-editing】

Satoru Sadohara, Fumio Koike, Ryohei kada and Yuichi Sato (ed.) 2011,11 Satoyama Revitalization –Challenges of Yokohama City and kanagawa Prefecture, Japan-. Soshinsha, Tokyo, 256pp. (in Japanese)

Koji NAKAMURA and Ryohei KADA (ed.) 2010,10 Satoyama Renaissance – A Message from Noto Region, Japan-. Soshinsha, Tokyo, 223pp. (in Japanese)

Papers

【Original Articles】

Yaota K. R. Kada, et al. 2011,10 he construction of Spatial data map as a tool for linking Environmental risk to food and health security in Laguna Lake Watersheds. . 11th ISSAAS Philippine National and International Forum Proceeding. Pampanga, Philippines,

Kada, R., Ranola R.F.J., Tan J.Z.G. 2011 Impacts of ecological risks on food and health security in Laguna Lake Watersheds. . Food Security and Health Risk Eradication. Journal of Scientific Paper Abstract 1(1):2-7.

Matsuda H, Makino M, Sakurai Y 2009 Development of adaptive marine ecosystem management and co-management plan in Shiretoko World Natural Heritage Site. Biol Cons 142:1937-1942.

Fujii, Y. and N. Kaneko 2009 The effect of earthworms on copper fractionation of freshly and long-term polluted soils. Ecotoxicology and Environmental Safety 72:1754-1759.

Ying Zhang, Satoshi Nakai, Shigeki Masunaga 2009 An exposure assessment of methyl mercury via fish consumption for the Japanese population. Analysis 29(9):1281-1289.

Saito, S., Arima, M., Nakajima, T., Tani, K. , Miyazaki, T., Senda, R., Chang, C., Takahashi, T., Hirahara, Y. and Kimura, J.-I. 2012 Petrogenesis of the Kaikomagatake granitoid pluton in the Izu Collision Zone, central Japan: implications for transformation of juvenile oceanic arc into mature continental crust. Contributions to Mineralogy and Petrology 163:611-629. (reviewed).

【Review Articles】

Saito, S. and Nakano, T. 2011,07 Water quality mapping of Laguna Lake Watersheds. Managing environmental risks to food and health security in sourtheast Asian watersheds. Progress Report.:275-280. Ryohei Kada (ed.) Managing environmental risks to food and health security in sourtheast Asian watersheds.

Kada, Ryohei 2009,04 Basic issues of food safety and needed risk management. Safety Engineering 48(1):2-8. (in Japanese)

Research Presentations

【Oral Presentation】

Ryohei Kada & Tadayoshi Masuda Managing Environmental Risks for Food and Health Security in Southeast Asian Watersheds. International Conference "Climate Change & Natural Disasters in Asia: Emerging Food Security and Eco-Health Issues", 2013.03.14-2013.03.15, Monash University Sunway campus, Malaysia .

Katsuya Tanaka The Cost-Effective Design of Payment for Ecosystem Services in the Philippines. International Conference "Climate Change & Natural Disasters in Asia: Emerging Food Security and Eco-Health Issues", 2013.03.14-2013.03.15, Monash University Sunway campus, Malaysia .

Roberto F. Ranola Building Disaster Resilience to Address Household Food Security: The Case in Silang-Sta. Rosa Subwatershed. Monash University Sunway campus, Malaysia , 2013.03.14-2013.03.15, Monash University Sunway campus, Malaysia .

Jaime Z. Galvez Tan A Baseline Description of the Health Status and Food Security of Households in the Santa Rosa Sub-watershed Area. International Conference "Climate Change & Natural Disasters in Asia: Emerging Food Security and Eco-Health Issues", 2013.03.14-2013.03.15, Monash University Sunway campus, Malaysia .

Rogelio N. Concepcion Community-Based Exchange of Knowledge, Learning and Communication of Ecological Risks Amidst Climate Change: Yaman ng Lawa Project. International Conference "Climate Change & Natural Disasters in Asia: Emerging Food Security and Eco-Health Issues",, 2013.03.14-2013.03.15, Monash University Sunway campus, Malaysia .

Damasa M. Macandog, Maria Francesca O. Tan, and Dalton Erick S. Baltazar Biophysical Profile and Environmental Impacts of Agricultural and Agroforestry Systems an Silang-Sta. Rosa Subwatershed.. 2012 ISSAAS International Symposium and Congress, 2012.11.13-2012.11.16, Bicol University, Legazpi City, Albay, Philippines.

D.B. Magcale-Macandog, A.P.O. de Guia, D. C. Pagaduan, M.A. Bragais, R.L.P. Mojica, R. Castillo, J. Llamas, and W. Reyes Land Use and Biodiversity Changes in the Sta. Rosa-Silang Subwatershed and its Implications to Food Security.. 2012 ISSAAS International Symposium and Congress, 2012.11.13-2012.11.16, Bicol University, Legazpi City, Albay, Philippines.

Jaime Z. Galvez Tan Baseline Description of Health Status and Health-related Factors of Households in the Sta. Rosa Sub-watershed Area. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Tadayoshi Masuda Where and How Are Food & Health Risks Distributed? From Household Surveys in the Santa Rosa Sub-Watershed, Laguna, the Philippines. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Rogelio N. Concepcion “Yaman ng Lawa” Community-based Ecology Learning Center. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Kiyoyuki YAOTA1 Spatial Data Integration for Risk Identification and Awareness (Linking Science to Community). Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Satoshi (Tetsu) Saito Present levels of heavy metals in river and lake waters and bottom sediments in the Laguna de Bay watershed. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Macrina T. Zafaralla Degraded Creek Habitat Restoration through Use of an Aquatic MacrophyteBiosorption System (AMBS): Biodiversity Evaluation. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Fe M. Ranola. RF Ranola, Jr., JT Dizon, MC Casin, MFO Tan and DES Baltazar Food Insecurity of Households in Downstream Watershed Communities in the Laguna Lake Region. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Rañola, Roberto Jr Impact of Environmental Hazards and Risks on the Environment and Food Security: A Framework. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Bam H.N. Razafindrabe Community Resilience to Flood Disasters - Case Study of Santa Rosa Subwatershed. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Fe M. Ranola Food Insecurity of Households in Watershed Communities in the Laguna Lake Region. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Victorio B. Molina HEALTH RISKS FROM HEAVY . Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Katsuya Tanaka Payment for Ecosystem Services Through Agroforestry in the Philippines. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Noel R. Juban Baseline Assessment of Food Insecurity and Coping Strategies in Households in the Santa Rosa Sub-watershed Area. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Lynn R. Panganiban Risk Factors to Heavy Metal Poisoning Among Residents in Four Communities in Santa Rosa City, Laguna. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Bam H.N. Razafindrabe, Kiyoyuki Yaota, Satoshi Saito, Tadayoshi Masuda, Ryohei Kada EcoHealth: How Changing Environment and Climate affect Human Health and Livelihood Security in the Philippines. the Planet Under Pressure Conference: New Knowledge Towards Solutions, 2012.03.26-2012.03.29, London, UK,.

Ryohei KADA Impact of Increasing Flood Risk on Food & Health Security in Southeast Asia. Impact of Increasing Flood Risk on Food & Health Security in Southeast Asia, 2012.03.01, Research Institute for Humanity and Nature, Kyoto, .

Bam H.N. Razafindrabe, Satoshi Saito, Kiyoyuki Yaota, Tadayoshi Masuda, Ryohei Kada Impacts of Ecological Risks to Food and Health Security in Laguna Lake Region, Philippines. . Global Risk Forum Davos One Health Summit 2012, 2012.02.19-2012.02.23, Davos, Switzerland.

Ryohei Kada, Victorio Molina, Allison Gocotano, Bam Razafindrabe, Adelina Santos-Borja, Tadayoshi Masuda, Environmental Risks, Food Security and Health in Laguna Lake Watershed, The Philippines.. 14th World Lake Conference Lakes, Rivers, Groundwater, and Coastal Areas: Understanding Linkages,, 2011.10.31-2011.11.04, Austin, Texas USA.

Bam H.N. Razafindrabe, Ryohei Kada Understanding Flood Resilience in the Laguna Lake Region, Philippines. the 14th World Lake Conference on Lakes, Rivers, Groundwater and Coastal Areas, Understanding Linkages, 2011.10.31-2011.11.04, Austin, Texas, USA..

Masuda, Tadayoshi, Fuwa, N., and R. Kada. Consumer Behavior and Perception of Food & Health Security: The Case of Tilapia and Drinking Water Consumption in the Santa Rosa Sub-Watershed, Laguna, the Philippines. 14th World Lake Conference, 2011.10.31-2011.11.04, Austin, TX.

Kiyoyuki YAOTA, Satoshi SAITO, Rogelio N. CONCEPCION, Ryohei KADA The Construction of Spatial Data Map as a Tool for Linking Environmental Risk to Food and Health Security in Laguna Lake Watersheds.. 11th International Society for Southeast Asian Agricultural Sciences (ISSAAS) , 2011.10.25-2011.10.26, Philippine National Convention and International Forum, Clarkfield, Angeles City..

Bam H.N. Razafindrabe, Michael Cuesta, Rogelio Concepcion, Ryohei Kada Assessing Flood Risks in Laguna Lake Region, Philippines-Implications to Food and Health Security. the 11th International Society for Southeast Asian Agricultural Sciences (ISSAAS) Philippine National Convention and International Forum, 2011.10.25-2011.10.26, Clarkfield, Angeles City, Philippines.

Bam H.N. Razafindrabe, Ryohei Kada Impacts of Ecological Risks to Food and Health Security in Laguna Lake Region, Philippines--Focus on Flood Risks Assessment.. the 7th ASAE International Conference on Meeting the Challenges Facing Asian Agriculture and Agricultural Economics Toward a Sustainable Future, 2011.10.13-2011.10.15, Hanoi, Vietnam.

YAOTA Kiyoyuki, KADA Ryohei, SAITO Satoshi Analysis of Factors Affecting Water Quality Degradation in Laguna Lake Watersheds, Philippines, for Ecological Risk Management. Kinki Branch of Ecological Society of Japan (Annual meeting), 2011.06.25, Nara Women’s University, Nara. (in Japanese)

Masuda, Tadayoshi, Yanagida, J.F., Bittenbender, H.C., Fleming, K.D., and V. Easton-Smith. Marketing Strategies Contributing Regional Welfare: Evidence from the Kona Coffee Industry in Hawaii. Selected Paper prepared for presentation at the International Food and Agribusiness Management Association (IFAMA) 21st. Annual World Forum and Symposium, 2011.06.20-2011.06.23, Frankfurt, Germany. Masuda, Tadayoshi

Ryohei Kada Empirical Analysis of Food and Health Risk Expansion in the Philippines(Special Session Program). Program of the 12th Spring Conference, The Japan Society for International Development, 2011.06.04, JICA Research Institute.

Bam H.N. Razafindrabe, Ryohei Kada Flood Resilience in a changing Climate and Environment -A Case-Study of the Laguna Lake Region, Philippines.. the 2nd World Congress on Cities and Adaptation to Climate Change, 2011.06.03-2011.06.05, Bonn, Germany..

Masuda, T., and R. Kada Agricultural Revival by Utilizing Biofuel Crops: How to Rehabilitate the Farmland Contaminated with Redioactive Materials or Damaged from Seawater After the 3/11 East Japan Earthquake and Tsunami?. The17th Annual International Sustainable Development Research Conference, 2011.05.10-2011.05.12, Alfred J. Lerner Hall, The Earth Institute, Columbia University.

Bam H.N. Razafindrabe, Ryohei Kada Interlinkage between Ecological Risks and Food and Health Security in a Fast-Growing Environment -A Case-Study of the Laguna Lake Region, Philippines. the 17th Annual International Sustainable Development Research Conference on Moving Toward a Sustainable Future, 2011.05.08-2011.05.10, New York, USA..

Masuda, Tadayoshi and R. Kada. Agricultural Revival by Utilizing Biofuel Crops: How to Rehabilitate the Farmland Contaminated with Radioactive Materials or Damaged from Seawater After the 3/11 East Japan Earthquake and Tsunami?. Selected Paper prepared for presentation at the 17th Annual Conference of the International Sustainable Development Research Society (ISDRS), 2011.05.08-2011.05.10, Columbia University, New York, NY.

Razafindrabe B.H.N., R. Kada Understanding flood resilience in the Laguna Lake Region, Philippines.. 14th World Lakes Conference, 2011, Austin, Texas USA.

Kada, Ryohei & Ashutosh Sarker Payment for Ecosystem Services and Sustainable Agricultural Development. Paper Presented at the 15th International Conference of Sustainable Development, 2009.07.05-2009.07.08, Univ. of Utrecht, Nederland.

Saito, S. Water Quality Mapping of Laguna Lake Watersheds: Case Study of Marinig and Santo Domingo Watersheds, Philippines. International Workshop on EcoHealth: Linking Ecoloical Risks to Human Health – A Philippine Case Study-, JST-Young Researchers Feasibility Study Project, 2012.02.11, Research Institute for Humanity and Nature, Kyoto, Japan.

Saito, S. Water Quality Mapping of Laguna Lake and its Watersheds. LAKEHEAD project joint meeting, 2011.08.05, University of the Philippines at Los Baños, Philippines.

Saito S. Water Quality Mapping of Laguna Lake Watersheds. LAKEHEAD project meeting at LLDA, 2011.06.21, Laguna Lake Development Authority, Taytay, Philippines.

【Poster Presentation】

Dr. Macrina T. Zafaralla Degraded Creek Habitat Restoration Through Use of an Aquatic Macrophyte Bio-sorption System. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Dr. Damasa B. Magcale-Macandog Impact of land-use change on plant, mammal and bird diversity and its implications on food security in the Sta. Rosa-Silang subwatershed. Community Forum 2012, 2012.09.27-2012.09.28, DAP, Tagaytay City, Philippines.

Bam H. N. Razafindrabe, Kiyoyuki Yaota, Satoshi Saito, Tadayoshi Masuda, Ryohei Kada EcoHealth: How Changing Environment and Climate affect Human Health and Livelihood Security in the Philippines. Planet Under Pressure, 2012.03.26-2012.03.29, ExCel Centre East International Conference Centre, London, U.K..

Saito, S., Nakano, T., Shin, K.-C., Maruyama, S., Miyakawa, C., Yaota, K. and Kada, R. Water quality mapping of Laguna de Bay and its watershed, Philippines.. American Geophysical Union, Fall Meeting Abstract H53K-1558, 2011.12.09, San Francisco, CA, USA.

Saito, S., Nakano, T., Shin, K.-C., Maruyama, S., Miyakawa, C., Yaota, K. and Kada, R. Water quality mapping of Laguna de Bay and its watershed, Philippines. (3P-23). Annual Meeting of GSJ 2011, 2011.11.16, Hokkaido University . (in Japanese)

Kiyoyuki YAOTA, Satoshi SAITO, Bam H.N. Razafindrabe, Ryohei KADA The Integration of Spatial Information for Management of Food and Health Security - The Case of Laguna Lake, Philippines. . PNC2012(Pacific Neighborhood Consortium) Annual Conference and Joint Meetings, 2011.10.19-2011.10.22, Sasin Graduate Institute of Business Administration of Chulalongkorn University.

Saito S. Various granitoid plutons in an ongoing arc-arc collision zone, the Izu collision zone, central Japan: implications for transformation from juvenile arc crust to continental crust. Hutton symposium VII : The Origin of Granites and Related Rocks, Abstracts p.128-129, 2011.07.08, Avila, Spain.

【Invited Lecture / Honorary Lecture / Panelist】

KADA Ryohei Managing Environmental Risks to Food and Health Security in Laguna Lake Watersheds, Philippines. The School of Environmental Science and Management, 2011.03.22, University of Philippines .

Kada, Ryohei Expanding Food-related Risks and Food Security in the contemporary World. Association Meeting of Material Chemistry System Engineering 2010, 2010.12.04-2010.12.05, Katsura Campus, Kyoto University, Kyoto. (in Japanese)

Kada, Ryohei Ecosystem Changes in Satoyama-Satoumi and expected "New Commons in Contemporary Japan. Environmental Science Seminar, 2010.09.16, Indiana University, U.S.A..

KADA Ryohei Expanding Ecological Risks in Asian Agriculture and the Future of Food Security. 7th Annual Research Presentation Meeting of Environmental Research Institutions Network in Japan, 2009.11.11, Hitotsubashi Memorial Hall, Tokyo. (in Japanese)

Saito, S. and Nakano, T. Evaluation of water quality of Laguna Lake Watersheds. The 1st Inter national Symposium on Managing Environmental Risks to Food and Health Security in the Laguna Lake Watersheds, Philippines, Abstract P28-30, 2011.06.03, Research Institute for Humanity and Nature, Kyoto, Japan (Oral presentation and panelist).

Saito, S., Ishikawa, M., Arima, M and Tatsumi, Y. Influence of dry pore-spaces on the Vp, Vs, Vp/Vs, and Poisson’s ratio of crustal rocks. Canadian Geophysical Union Annual meeting, Abstract p 136-137, 2011.05.18, Banff Park Lodge, Banff, Alberta, Canada (Invited talk).