Staff Profile

NameOKUDA Noboru
AffiliationResearch Department
PositionAssociate Professor
Year of Birth1969
Professional CareerLecturer, Mie University, Department of Liberal Arts (1998)
Postdoctoral fellow, Ehime University, Department of Biology and Earth Science (1998)
Research Fellow, Ehime University, Center for Marine Environmental Studies (2002)
Associate Professor, Kyoto University, Center for Ecological Research (2005)
Invited Associate Professor, Research Institute for Humanity and Nature (2013)
Associate Professor, Research Institute for Humanity and Nature (2014)
Higher DegreesB.S. (Science University of Tokyo, Department of Biological Science, 1992)
M.S. (Ehime University, Department of Biology, 1994)
Ph.D. (Kyoto University, Department of Biology, 1998)
Academic Society MembershipsThe Ichthyological Society of Japan
The Ecological Society of Japan
Japan Ethological Society
Society of Evolutionary Studies
The Japanese Society of Fisheries Science
The Japanese Society of Limnology
AwardsBest Poster Award for International Symposium “Long-term Variations in the Coastal Environments and Ecosystems” held in Ehime University (2004)
Young Ichthyologist Award 2005 from The Ichthyological Society of Japan (2005)
CHED REPUBLICA AWARDS(2016)
35th Association of Systematic Biologists of the Philippines-Symposium and Annual Meeting「Taxonomic Sufficiency: Implications from ecological studies on aquatic insects in Philippine watersheds」 (2017)
Ecological Research Award: Integrating isotopic, microbial, and modeling approaches to understand methane dynamics in a frequently disturbed deep reservoir in Taiwan. By Itoh, M., H. Kojima, P.-C. Ho, C.-W. Chang, T.-Y. Chen, S. S.-Y. Hsiao, Y. Kobayashi, M. Fujibayashi, S.-J. Kao, C.-h. Hsieh, M. Fukui, N. Okuda, T. Miki & F.-K. Shiah (2018)

 

Books

【Authored/Co-authored】

Okuda, N., K. Watanabe, K. Fukumori, S. Nakano & T. Nakazawa 2013 Biodiversity in aquatic systems and environments:Lake Biwa. Springer Japan, Chiyoda-ku,Tokyo, 91pp.

【Chapters/Sections】

Shibata, J., Z. Karube, Y. Sakai, T. Takeyama, I. Tayasu, Y. Satoh, S. Yachi, S. Nakano & N. Okuda 2014 Long-Term and Spatial Variation in the Diversity of Littoral Benthic Macroinvertebrate Fauna in Lake Biwa, Japan. Nakano, S., T. Yahara, T.Nakashizuka (ed.) Integrative Observations and Assessments. Asia-Pacific Biodiversity Observation Network. Springer Japan, Chiyoda-ku,Tokyo, pp.151-166. DOI:10.1007/978-4-431-54783-9

Okuda, N. & K. Fukumori 2013 Predator diversity changes the world: from gene to ecosystem. Okuda et al (ed.) Biodiversity in aquatic systems and environments:Lake Biwa. Springer Japan, Chiyoda-ku,Tokyo, pp.21-49. DOI:10.1007/978-4-431-54150-9_2

Okuda, N., T. Takeyama, T. Komiya, Y. Kato, Y. Okuzaki, Z. Karube, Y. Sakai, M. Hori, I. Tayasu & T. Nagata 2012 A food web and its long-term dynamics in Lake Biwa: a stable isotope approach. Kawanabe, H. et al (ed.) Lake Biwa: Interactions between Nature and People.. Springer Academic, Amsterdam, pp.205-210.  http://www.ecology.kyoto-u.ac.jp/~nokuda/research&education/paper%20PDF/Okuda%202012a.pdf

Papers

【Original Articles】

Okano, J., Okuda, N. 2018,02 Effects of resource-dependent cannibalism on population size distribution and individual life history in a case-bearing caddisfly. Plos One. DOI:10.1371/journal.pone.0191925 Open Access

Okano,J., J.Shibata, Y.Sakai, M.Yamaguchi, M.Ohishi, Y.Goda, S.Nakano, N.Okuda 2017,10 The effect of human activities on benthic macroinvertebrate diversity in tributary lagoons surrounding Lake Biwa. The Japanese Society of Limnology 2017:1-9. DOI:10.1007/s10201-017-0530-2

Nakazawa, T., S.-Y. V. Liu, Y. Sakai, K. S. Araki, C.-H. Tsai & Okuda,N. 2017,09 Spatial genetic structure and body size divergence in endangered Gymnogobius isaza in ancient Lake Biwa. Mitochondrial DNA Part A. DOI:10.1080/24701394.2017.1357708

Itoh, M., Kojima,H. P.-C. Ho, C.-W. Chang, T.-Y. Chen, S. S.-Y. Hsiao, Kobayashi,Y. Fujibayashi,M. S.-J. Kao, C.-h. Hsieh, Fukui,M. Okuda,N. Miki,T. F.-K. Shiah. 2017,09 Integrating isotopic, microbial, and modeling approaches to understand methane dynamics in a frequently disturbed deep reservoir in Taiwan. Ecological Research 32(6):861-871. DOI:10.1007/s11284-017-1502-z

Okano, J., Tayasu, I., Nakano, S. and Okuda, N. 2017,07 Differential responses of two ecologically similar case-bearing caddisflies species to a fish chemical cue: implication for a coexistence mechanism. Zoological Science 34:461-467. DOI:10.2108/zs160207 (reviewed).

Ishikawa, N. F., Y. Chikaraishi, N. Ohkouchi, A. R. Murakami, I. Tayasu, H. Togashi, J. Okano, Y. Sakai, T. Iwata, M. Kondoh & N. Okuda 2017,04 Integrated trophic position decreases in more diverse communities of stream food webs. Scientific Reports (7):2130. DOI:DOI:10.1038/s41598-017-02155-8

Ho, P.-C., N. Okuda, T. Miki, M. Itoh, F.-K. Shiah, C.-W. Chang, S. S.-Y. Hsiao, S.-J. Kao, M. Fujibayashi & C.-H. Hsieh 2016,08 Summer profundal hypoxia determines the coupling of methanotrophic production and the pelagic food web in a subtropical reservoir. Freshwater Biology 61:1694-1706. DOI:10.1111/fwb.12809

Kobayashi, Y., H. Kojima, M. Itoh, N. Okuda, M. Fukui, F.-K. Shiah 2016,07 Abundance of planktonic methane-oxidizing bacteria in a subtropical reservoir. Plankton & Benthos Research 11(4):144-146. DOI:http://doi.org/10.3800/pbr.11.144

Okuda, N., Y. Sakai, K. Fukumori, S.-M. Yang, C. Hsieh, F.-K. Shiah 2016,06 Food web properties of the recently constructed, deep subtropical Fei-Tsui Reservoir in comparison with the ancient Lake Biwa. . Hydrobiologia in press. DOI:10.1007/s10750-017-3258-4 . DOI

Ohba, S., N. Okuda & S. Kudo 2016,05 Sexual selection of male parental care in giant water bugs. Royal Society open science(3). DOI:10.1098/rsos.150720 (in Japanese) Ohba, S., N. Okuda & S. Kudo (2016) . 3: 150720

Kakioka, R., T. Kokita, H. Kumada, K. Watanabe & N Okuda 2015,08 Genomic architecture of habitat-related divergence and signature of directional selection in the body shapes of Gnathopogon fishes. Molecular Ecology 24(16):4159-4174. DOI:10.1111/mec.13309

Garcia, V. O. S., R. D. S. Papa, J. C. A. Briones, N. Mendoza, N. Okuda and A. C. Diesmos 2014,12 Food habits and distribution of the Lake Taal sea snake (Hydrophis semperi Garman, 1881) and the sympatric little file snake (Acrochordus granulatus Schneider, 1799) in Lake Taal Philippines. Asian Herpetological Research 5(4):255-262. DOI:10.3724/SP.J.1245.2014.00255 (reviewed).

Wu, Q., K. Kawano, Y. Uehara, N. Okuda, M. Hongo, S. Tsuji, H. Yamanaka & T. Minamoto 2018,04 Environmental DNA reveals nonmigratory individuals of Palaemon paucidens overwintering in Lake Biwa shallow waters. Freshwater Science 37.0. DOI:10.1086/697542

Peralta, E. M., H. J. A. Guerrero, C. G. S. M. Arce, J. J. A. Domingo, M. A. Maute, M. D. S. San Miguel, E. M. C. Trino, I. B. B. De Jesus, J. C. A. Briones, F. S. Magbanua, N. Okuda, R. D. S. Papa 2018,03 Prevailing environmental conditions influence mollusk diversity and distribution around Talim Island of Laguna de Bay (Luzon Is., Philippines).. The Antoninus Journal 01:31-39.  http://theantoninus.com.ph/archives/17/

Briones, J. C. A., R. D. S. Papa, G. A. Cauyan, N. Mendoza & N. Okuda 2016,12 Fish diversity and trophic interactions in Lake Sampaloc (Luzon Is., Philippines). Tropical Ecology 57(3):567-581. (reviewed).

Itoh, M., Y. Kobayashi, T.-Y. Chen, T. Tokida, M. Fukui, H. Kojima, T. Miki, I. Tayasu, F.-K. Shiah & N. Okuda 2015,07 Effect of interannual variation in winter vertical mixing on CH4 dynamics in a subtropical reservoir.. Journal of Geophysical Research: Biogeosciences 120(7):1246-1261. DOI:10.1002/2015JG002972 (reviewed).

Kakioka, R., T.Kokita, H.kumada, K.Watanabe & N.Okuda 2015,07 Genomic architectue of habitat-related divegence and signature of directional selection in the body shapes of Gnathopogon fishes.. Molecular Ecology 24(16):4159-4174. DOI:10.1111/mec.13309 (reviewed).

Cabanillas-Terán, N., P. Loor-Andrade, J. Marin & N. Okuda 2015,04 Algal diversity drives trophic niche partitioning between sympatric grazers in marine rocky reefs. CENTER FOR ECOLOGICAL RESEARCH NEWS, KYOTO UNIVERSITY 129:13-13. (reviewed).

Kobayashi,Y., Y. Hodoki, K. Ohbayashi, N. Okuda & S. Nakano 2015,03 Change in bacterial community structure associated with phytoplankton succession in outdoor experimental ponds. Plankton and Benthos Research 10(1):34-44. DOI:10.3800/pbr.10.34 (reviewed).

Ishikawa, N. F., Y. Kato, H. Togashi, M. Yoshimura, C. Yoshimizu, N. Okuda and I. Tayasu (in press) 2014,07 Stable nitrogen isotopic composition of amino acids reveals food web structure in stream ecosystems. Oecologia 175(3):911-22. (reviewed).

Kojima, H., R. Tokizawa, K. Kogure, Y. Kobayashi, M. Itoh, N. Okuda, F.-K. Shiah and M. Fukui 2014,07 Community structure of planktonic methane-oxidizing bacteria in a subtropical reservoir characterized by dominance of phylotype closely related to nitrite reducer. Scientific Reports 4:5728. (reviewed).

Shiah, F.-K., Y. Kobayashi, M. Itoh & N. Okuda 2014,03 Distribution of methane oxidizing bacteria in the Fei-Tsui reservoir, Taiwan. CENTER FOR ECOLOGICAL RESEARCH NEWS, KYOTO UNIVERSITY(123):9-9. (reviewed).

Hamaoka, H., A. Kaneda, N. Okuda & K. Omori 2014,01 Upwelling-like bottom intrusion enhances the pelagic-benthic coupling by a fish predator in a coastal food web. Aquatic Ecology 48(1):63-71. (reviewed).

Uchii, K., N. Okuda, T. Minamoto & Z. Kawabata 2013,06 An emerging infectious pathogen endangers an ancient lineage of common carp by acting synergistically with conspecific exotic strains. Animal Conservation 16:324-330. (reviewed).

Ohbayashi K., Y. Hodoki, Y. Kobayashi, N. Okuda & S. Nakano 2013,04 Genotypic composition and the relationship between genotypic composition and geographical proximity of the cyanobacterium Microcystis aeruginosa in western Japan. Canadian Journal of Microbiology 59:266-272. (reviewed).

Sakai Y., Z. Karube, T. Takeyama, A. Kohzu, C. Yoshimizu, T. Nagata, I. Tayasu & N. Okuda 2013,01 Seasonal and site-specific variability in terrigenous particulate organic carbon concentration in near-shore waters of Lake Biwa, Japan. Limnology 14:167-177. (reviewed).

Kobayashi, Y., Y. Hodoki, K. Ohbayashi, N. Okuda & S. Nakano 2013,01 Grazing impact on the cyanobacterium Microcystis aeruginosa by the heterotrophic flagellate Collodictyon triciliatum in an experimental pond. Limnology 14(1):43-49. (reviewed).

Kakioka R., T. Kokita, H. Kumada, K. Watanabe & N. Okuda 2013,01 A RAD-based linkage map for QTL analysis and comparative genomics in the gudgeons (genus Gnathopogon, Cyprinidae). BMC Genomics 14:32. (reviewed).

Hodoki Y., K. Ohbayashi, Y. Kobayashi, N. Okuda & S. Nakano 2013,01 Anatoxin-a-producing Raphidiopsis mediterranea Skuja var. grandis Hill is one ecotype of non-heterocytous Cuspidothrix issatschenkoi (Usačve) Rajaniemi et al. in Japanese lakes. Harmful Algae 21−22:44-53. (reviewed).

Ohba, S., J. Takahashi & N. Okuda 2013 A non-lethal sampling method for estimating the trophic position of an endangered giant water bug using stable isotope analysis. Insect Conservation and Diversity 6:155-161. (reviewed).

Briones, J. C., C.-H. Tsai, T. Nakazawa, Y. Sakai, R. D. S. Papa, C.-H. Hsieh & N. Okuda 2012,12 Long-term changes in the diet of Gymnogobius isaza from Lake Biwa, Japan: effects of body size and environmental prey availability. PLoS ONE 7(12):e53167. (reviewed).

Araki, K. S., T. Nakazawa, A. Kawakita, H. Kudoh & N. Okuda 2012,03 Development of nine markers and characterization of the microsatellite loci in the endangered Gymnogobius isaza (Gobiidae). International Journal of Molecular Sciences 13(5):5700-5705. DOI:10.3390/ijms13055700 (reviewed).

Research Presentations

【Oral Presentation】

Yi, R., P. Song, M. Maruo, S. Ban, T. Ishida & N. Okuda What is difference between orthophosphate and SRP in lake waters?. The Japanese Society of Limnology 82th Annual Meeting, 2017.09.29, Senboku.Akita.

Asano,S. Wakita,K. Okuda,N. Tokito,M. Saizen,I Bio-indicators to Estimate a State of​ ​ Socio-ecological System. Special Seminar at Hue University of Agriculture and Forestry, 2017.09.08, Vietnam.  

Teramura, K., M, Allen. J, Hargrove. J. D, Austin. S,Walsh. W, Porack. N, Trippel.Takata,K. Okuda,N. Yodo,T & Kitagawa,T “Construction of Genetic Linkage Maps of the Largemouth Bass”. American Fisheries Society 147th Annual Meeting, 2017.08.20-2017.08.24.

Cabanillas-Terán, N., P. L. Andrade, J. Marin & Okuda,N. “Trophic niche partioning of Diadema mexicanum and Eucidaris thouarsii in rocky reef bottoms of Ecuador”. IX Congreso Mexicano de Arrecifes Coralinos, 2017.06.13-2017.06.16, Chetumal, Quintana Roo.

Peralta, E. M., J. C. A. Briones, N. Okuda, F. S. Magbanua & R. D. S. Papa “Taxonomic Sufficiency: Implications from ecological studies on aquatic insects in Philippine watersheds”. 35th Association of Systematic Biologists of the Philippines-Symposium and Annual Meeting, 2017.05.28-2017.05.31, University of St. La Salle, Bacolod City.

Fujinaga, S., Y. Kobayashi, A. R. Murakami, M. Ushio, U. Song, I. Tayasu, N. F. Ishikawa, J. Okano, C.-Y. Ko, H. Togashi, Y. Sakai, M. Itoh, N. Ohte, S. Nakano, T. Iwata1 & N. Okuda “Bacterial community composition and richness in biofilms of the Yasu and Ado Rivers”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Trino, E. M. C., I. B. B. De Jesus, E. M. Peralta, H. Guerrero, A. Santos-Borja, F. Magbanua, J. C. Briones, R. D. Papa & N. Okuda “Biodiversity Assessment of Littoral Macrozoobenthos in Laguna de Bay, Philippines”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Onodera, S., M. Saito, S. Ban, G. Jin, Y. Tomozawa & N. Okuda “Spatial Variation in Lacustrine Groundwater Discharge (LGD) as a Nutrient Source in Lake Biwa, Japan”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe. , May 21, ,

Ide, J., A. P. Cid-Andres, T. Ishida, K. Osaka, T. Iwata, T. Hayashi, M. Akashi, I. Tayasu & N. Okuda “Comparisons of oxygen isotope ratio of phosphate in river water and rocks between two watersheds in central Japan”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Osaka, K., S. Chishiro, T. Iwata & N. Okuda “The quantitative evaluation of bio-available particulate phosphorus discharged from Yasu River”. n: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Ishida, T., Y. Uehara1, T. Iwata, O. Privaldos, S. Asano, T. Ikeya, K. Osaka, J. Ide, I. Tayasu & Noboru Okuda “Biogeochemical cycling of phosphate in the Yasu River Watershed: Insight from oxygen isotope of phosphate”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

De Jesus, I. B. B., J. C. A. Briones, O. L. A. Privaldos, E. M. Peralta, Y. Uehara, T. Ishida, A. S. Borja, F. S. Magbanua, R. D. S. Papa, T. Iwata & N. Okuda “Quantification of phosphorus and nitrogen uptake in a tropical freshwater ecosystem in Southeast Asia suggests N limitation”. n: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Ko, C.-Y., T. Iwata, J.-Y. Lee, A. Murakami, J. Okano, N. F. Ishikawa, Y. Sakai, I. Tayasu, M. Itoh, U. Song, H. Togashi, S. Nakano, N. Ohte & N. Okuda “Alpha and beta diversity of benthic macroinvertebrates in natural and disturbed river watersheds and their environmental driver”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Iwata. T., T. Hayashi, M. Akashi, A. R. Murakami & N. Okuda “Nitrogen and phosphorus dynamics in two Japanese river networks with contrasting watershed land use”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Peralta, E. M., L. Batucan, Y. Uehara, T. Ishida, Y. Kobayashi, C.-Y. Ko, T. Iwata, A. Borja, J. C. Briones, R. D. Papa, F. Magbanua & N. Okuda “Benthic macroinvertebrates response to water quality and canopy cover of a heavily impacted tropical subwatershed”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.21, Makuhari Messe.

Okuda, N “Toward synthesis of watershed sciences”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe.

Asano S., K. Wakita, I. Saizen & N. Okuda Can the spawn of the Japanese brown frog (Rana japonica, Ranidae) be a local environmental index to evaluate environmentally friendly rice paddies?. 37th Asian Conference on Remote Sensing, 2016.10.17-2016.10.21, Colombo.

Peralta, E., Batucan L. S. Jr., Briones, J. C. A, F. S. Magbanua, R. D. S. Papa, Magbanua F. S. & N. Okuda Benthic macroinvertebrates assemblages and biological metrics in relation to land cover and environmental factors in Silang-Santa Rosa subwatershed,“ Philippines”. 48th Annual National Convention of the Federation of Institutions for Marine and Freshwater Sciences, 2016.09.21-2016.09.23, University of Eastern Philippines, Catarman. (in Japanese)

De Jesus, I. B., O. L. A. Privaldos, A. S. Borja, F. S. Magbanua, R. D. S. Papa, T. Iwata & N. Okuda A pioneer in tropical streams: determination of phosphorous and nitrogen uptake in Silang-Santa Rosa watershed, Philippines. 48th Annual National Convention of the Federation of Institutions for Marine and Freshwater Sciences, 2016.09.21-2016.09.23, University of Eastern Philippines, Catarman .

Okuda, N., Y. Sakai, J. Shibata, Z. Karube, Y. Kato, T. Komiya, Y. Okuzaki, M. Hori, I. Tayasu, S. Yachi, S. Nakano & T. Nagata Spatio-temporal dynamics of food webs in the ancient Lake Biwa: Causes and consequences of changing biodiversity. The 33rd Congress of the International Society of Limnology, 2016.07.31-2016.08.05, Trino, Italy.

Okuda, N. Methanotrophic food webs as a carbon recycling system in lakes under climate changes (Invited talk) . The 1st Philippine Symposium on Freshwater Biodiversity and Ecosystems, 2016.06.07-2016.06.10, University of Santo Tomas, Manila,.

Chishiro, S., K. Osaka, K. Fujita O. Nagafuchi & N. Okuda Evaluation of the source and bioavailability of particulate phosphorus in Yasu River by using sequential extraction methods. JpGU Meeting 2016, 2016.05.22-2016.05.26, Makuhari Messe.

Uehara, Y., H. Takayama, Y. Kataoka, T. Kikkou, M. Nemoto, T. Kokita, T. Otake & N Okuda Remarkable homing ability of a pelagic crucian carp “Carassius auratus grandoculis. 6th International Otolith Symposium, 2018.04.15-2018.04.20, Keelung, Taiwan.

Saitoh, Y., T. Nakano, K.-C. Shin, K. Yamashita, H. Amakawa, C. Yoshimizu, J. Matsubayashi, Y. Kato, H. Togashi, Y. Amano, Y. Kurita, N. Okuda & I. Tayasu Spatial variation of neodymium and strontium isotope ratios of shellfish soft bodies in the coastal sea of eastern Tohoku District. JpGU Meeting 2016, 2016.05.22-2016.05.26, Makuhari Messe.

Ide, J., H. Somura, T. Nakamura, Y. Mori, I. Takeda & K. Nishida. Spatial variations in river nitrate concentration from upper toward lower reaches in the hilly and mountainous area. The 127th Annual Meeting of the Japanese Forest Society, 2016.03.27-2016.03.30, Kanagawa, Japan.

Ide, J., H. Somura, T. Nakamura, Y. Mori, I. Takeda & K. Nishida Spatial variations in concentration and nitrogen and oxygen stable isotopes of river nitrate in a hilly and mountainous area, western Japan. The 4th International Conference on Forests and Water in a Changing Environment, 2015.07.06-2015.07.09, Kelowna, BC, Canada.

Cid, A.P.,U. Song, I. Tayasu, J. Okano, H. Togashi, N.F. Ishikawa, A. Murakami, T. Hayashi, T. Iwata , K. Osaka, S. Nakano & N. Okuda Spatial distributions of REE, heavy metals and oxygen isotope of phosphate in the Yasu river, Shiga, Japan. JpGU Meeting 2015, 2015.05.24-2015.05.28, Makuhari Messe. (in Japanese)

Okuda, N., A. P. Cid, I. Tayasu & J. Ide Phosphate oxygen isotope analysis to study phosphorous cycling. JPGU 2015, 2015.05.24-2015.05.28, Chiba City.

Okuda, N. What's the methanotrophic food web?. The 62nd ESJ Annual Meeting, 2015.03.18-2015.03.22, Kagoshima.

Ho, P.-C., N. Okuda, M. Itoh, T. Miki, F.-K. Shiah, C.-W. Chang and C.-H. Hsieh Summer hypoxia determines the coupling of methanotrophic and pelagic foodweb. The 62nd ESJ Annual Meeting, 2015.03.18-2015.03.22, Kagoshima.

Itoh, M., Y. Kobayashi, T.-Y. Chen, T. Tokida, M. Fukui, H. Kojima, T. Miki, I. Tayasu, F.-K. Shiah & N. Okuda. CH4 dynamics in a subtropical reservoir under climate changes. The 62nd ESJ Annual Meeting, 2015.03.18-2015.03.22, Kagoshima.

Yachi, S., D. Kitazawa, S. Nakano, Y. Sakai and N. Okuda Toward the evaluation of extinction risk of Lake Biwa benthic species due to global warming. JSMB/SMB 2014, 2014.07.28-2014.08.01, Osaka city.

Okuda, N., I. Tayasu, S. Nakano, M. Ito, M. Fukui, H. Kojima, K. Kogure, M. Fujibayashi, C. Maruo, P.-C. Ho, C.-W. Chang, L. Zhang, W.-H. Teng, T. Miki, C.-H. Hsieh, Y. Kobayashi, C.-C. Chang and F.-K. Shiah Methanotrophic food webs as a carbon recycling system in lakes under climate changes. The 6th EAFES International Congress, 2014.04.09-2014.04.11, Haikou, China.

Kakioka, R., T. Kokita, H. Kumada, K. Watanabe & N. Okuda Genetic architecture of habitat-related divergence in body shape in Gnathopogon (Teleostei: Cyprinidae). 9th Indo-Pacific Fish Conference, 2013.06.24-2013.06.28, okinawa.

Ishikawa, N. F., Y. Kato, H.Togashi, M. Yoshimura, C. Yoshimizu, N. Okuda & I. Tayasu. Analysis of stream food webs using stable nitrogen isotope ratios of amino acids. JpGU Meeting 2013, 2013.05.19-2013.05.24, Ciba-city.

Shibata, J., Z. Karube, Y. Sakai, T. Takeyama, I. Tayasu, Y. Satoh, S. Yachi, S. Nakano & N. Okuda Historical and geographical patterns of biodiversity in the ancient Lake Biwa, Japan. International Workshop on Freshwater Biodiversity Conservation in Asia, 2012.11.26-2012.11.27, Fukuoka.

Shibata, J., Z. Karube, Y. Sakai, T. Takeyama, I. Tayasu, Y. Satoh, S. Yachi, S. Nakano & N. Okuda Environmental pressures for littoral benthic macro-invertebrate fauna in large lake ecosystem. International Conference on Indonesian Inland Waters III, November 2012, Palembang, Indonesia.

Nakano, S., H. Amano, S. Hiroishi, Y. Hodoki, T. Honma, T. Kataoka, Y. Kobayashi, R. Kondo, K. Ohbayashi, N. Okuda, Y. Takao, Y. Tanabe, T. Tanaka & M. M. Watanabe Ecophysiology and phylogeography of bloom-forming cyanobacterium Microcystis aeruginosa in Asian eutrophic lakes. The 15th International Symposium on River and Lake Environments, 2012.10.15-2012.10.19, Zhangjiajie.

Okuda N., Y. Kato, T. Komiya, Y. Okuzaki, M. Hori, I. Tayasu & T. Nagata Biological specimens tell us a centurial history of ecosystem alterations in the ancient Lake Biwa. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu City.

Briones, J. A., C. Tsai, T. Nakazawa, Y. Sakai, M. Urabe, R. Papa, C. Hsieh, N. Okuda. Long-term changes in the diet and intestinal parasite fauna ofGymnogobius isaza from Lake Biwa, Japan: Effects of body size and prey availability. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu.

Tayasu, I., N. Okuda, N. Tokuchi, N. Ohte & M. Kondoh Multiple isotope approach for studying material flow and food web structures of stream ecosystems in Lake Biwa watershed”. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu.

Uchii K., N. Okuda, T. Minamoto, A. Telschow, Z. Kawabata Transmission dynamics of an emerging pathogen Cyprinid herpesvirus 3 and its impact on host population genetic structure. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu City.

【Poster Presentation】

Jin, G., M. Saito, S. Onodera, T. Ishida, N. Okuda, R. Yi, S. Ban & Y. Tomozawa “Characteristic of oxygen isotope ratio of phosphate in endmember of Lake Biwa”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe. , May 20, , (Poster)

Uehara, Y., Y. Kataoka, T. Kikkou, T. Ishida, S. Asano, Y. Kobayashi, T. Otake & N. Okuda “Migration routes of pelagic crucian carp Carassius auratus grandoculisendemic to Lake Biwa revealed by otolith Sr stable isotopes”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe.

Tan, A. K. V., A. E. Belen, C. Perez, G. R. Buenaventura, E. M. Peralta, I. B. B. De Jesus, P. Palomares, J. C. Briones, T. Ikeya, F. Magbanua, R. D. Papa & N. Okuda “Stream Benthic Macroinvertebrates Response to Water Quality of Urban and Rural Areas of the Marikina Watershed”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe.

Espiritu, K. G. R., J. N. A. De Vera, F. G. G. Cantre1, E. M. Peralta, I. B. B. De Jesus, P. Palomares, J. C. Briones, T. Ikeya, F. Magbanua, R. D. Papa & N. Okuda “Land use impact on benthic macroinvertebrate assemblages in selected lotic ecosystems in a government-declared protected landscape”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe.

Ikeya, T. C.-Y. Ko, E. M. Peralta, T. Ishida, Y. Uehara, S. Asano, N. Okuda, M. Ushio, S. Fujinaga, I. Tayasu& T. Iwata “The community composition and diversity of epilithic bacterium and microalgae in a Japanese river system during irrigation season”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe. (in Japanese)

Asano S., Y. Uehara, H. Nakashima, M. Tokito, I. Saizen, O. L. Privaldos, K. Osaka & N. Okuda “Spatial Pattern of Ground Water Utilization in Silang-Santa Rosa Sub-watershed”. In: Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts. JpGU-AGU Joint Meeting 2017, 2017.05.20, Makuhari Messe.

Triño, E. M. C., I. B. B De Jesus, E. M. Peralta, H. J. A. Guerrero, C. G. S. M. Arce, J. J. A. Domingo, M. A. Maute, M. D. S. San Miguel, J. C. A. Briones, F. S. Magbanua, A. C. Santos-Borja, R. D. S. Papa & N. Okuda “Biodiversity Assessment of Littoral Macrozoobenthos in Laguna de Bay, Philippines”. The 16th World Lake Conference, 2016.11.07-2016.11.11, Bali .

Sakai, Y., Z. Karube, J. Shibata, T. Takeyama, I. Tayasu, S. Yachi, S. Nakano & N. Okuda The impact of land uses on benthic macroinvertebrate diversity in the coastal ecosystem of Lake Biwa. 2015 ASLO Aquatic Science Meeting, 2015.02.22-2015.02.27, Granada,Spain.

Sakai, Y., Z. Karube, J. Shibata, T. Takeyama, I. Tayasu, S. Yachi, S. Nakano & N. Okuda The impact of land uses on benthic macroinvertebrate diversity in the coastal ecosystem of Lake Biwa. ISRLE2014, 2014.08.24-2014.08.27, Chuncheon,Korea.

Sakai, Y. & N. Okuda Intraspecific differences in vertical habitat and food utilization by crustacean zooplankton: stable isotopic evidence. ISRLE2014, 2014.08.24-2014.08.27, Chuncheon, Korea.

Ban, S., Q. Wu, N. Hishida, K. Fujita, O. Nagafuchi and N. Okuda Bioaccumulation of mercury from seston to fish through the food web in Lake Biwa. ISRLE2014, 2014.08.24-2014.08.27, Chuncheon,Korea.

Cid, A.P.,U. Song, I. Tayasu, J. Okano, H. Togashi, N.F. Ishikawa, A. Murakami, T. Hayashi, T. Iwata , K. Osaka, S. Nakano and N. Okuda “Tracking phosphorus sources and cycling in freshwater: stable isotope approach”. JpGU Meeting 2014, 2014.04.28-2014.05.02, Yokohama city.

Cid, A.P.,U. Song, I. Tayasu, J. Okano, H. Togashi, N.F. Ishikawa, A. Murakami, T. Hayashi, T. Iwata , K. Osaka, S. Nakano & N. Okuda “A new technique to trace phosphorus sources and cycling in watersheds”. ILTER 2013, 2013.10.07-2013.10.12, Seoul.

Cid, A.P.,U. Song, I. Tayasu, J. Okano, H. Togashi, N.F. Ishikawa, A. Murakami, T. Hayashi, T. Iwata , K. Osaka, S. Nakano & N. Okuda “Tracing sources and cycling of phosphorus in a watershed using phosphate isotopes of oxygen”. 78th The Japanese Society of LIMNOLOGY, 2013.09.10-2013.09.13, Otsu City.

Kobayashi, Y., M. Ito, H. Kojima, C.-H. M. Lin, K. Kuo, K.-W. Wang, M. Fukui, F.-K. Shiah & N. Okuda "Spatio-temporal dynamics of aerobic methane oxidizing bacterial community and its”methanotrophic pathways in the pelagic food web of subtropical Fei-Tsui Reservoir. 13th Symposium on Aquatic Microbial Ecology, 2013.09.08-2013.09.13, Stresa, Italy.

Murakami, A., N. Okuda, T. Iwata, R. Williams & S. Nakano Different land use patterns affect responses of river epilithic biofilms: A case study in Yasu River watershed, Shiga, Japan. 13th Symposium on Aquatic Microbial Ecology, 2013.09.08-2013.09.13, Stresa, Italy.

Okuda, K., Y. Ikeda, J. Takebayasi, T. Kuramoto, T. Kitagawa, N. Okuda, T. Yodo & K. Takata Inter-annual changes in genetic structures of largemouth bass hybrid populations between two subspecies based on SNPs analysis in Japan. 9th Indo-Pacific Fish Conference, 2013.06.24-2013.06.28, Okinawa.

Cid, A.P.,U. Song, I. Tayasu, J. Okano, H. Togashi, N.F. Ishikawa, A. Murakami, T. Hayashi, T. Iwata , K. Osaka, S. Nakano & N. Okuda Phosphate oxygen isotopes as a tool to trace phosphorus sources and cycling in a watershed. JpGU Meeting 2013, 2013.05.19-2013.05.24, Chiba City.

Shibata, J., Z. Karube, Y. Sakai, T. Takeyama, I. Tayasu, Y. Satoh, S. Yachi, S. Nakano & N. Okuda Historical And Geographical Patterns Of Biodiversity in The Ancient Lake Biwa, Japan. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu city.

Kato, Y., N. F. Ishikawa, H. Togashi, M. Yoshimura, M. Itoh, K. Osaka, N. Okuda, N. Ohte, C. Yoshimizu & I. Tayasu Food web analysis based on &delta;<sup>15</sup>N of amino acid in river ecosystem. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu City.

Sakai, Y. & N. Okuda Intraspecific differences in vertical habitat utilization by crustacean zooplankton: stable isotopic evidence. 2012 ASLO Aquatic Sciences Meeting, 2012.07.08-2012.07.13, Otsu.

Shibata J., Z. Karube, Y. Satoh, S. Yachi, S. Nakano & N. Okuda The ancient Lake Biwa as a biodiversity hot spot: how to detect drivers of biodiversity loss?. Planet Under Pressure, 2012.03.26-2012.03.29, London.

Kobayashi Y., Y. Hodoki, K. Ohbayashi, H. Amano, T. Tanaka, N. Okuda & S. Nakano Grazing on the cyanobacterium Microcystis aeruginosa by the heterotrophic flagellate Collodictyon triciliatum in an experimental pond. Joint Meeting of the 59th Annual Meeting of ESJ and the 5th EAFES International Congress, 2012.03.17-2012.03.21, Otsu City.

Shibata J., Z. Karube, Y. Sakai, T. Takeyama, I. Tayasu, Y. Satoh, S. Yachi, S. Nakano & N. Okuda The ancient Lake Biwa as a model of Asian lake ecosystems: historical and geographical patterns of biodiversity. Joint Meeting of the 59th Annual Meeting of ESJ and the 5th EAFES International Congress, 2012.03.17-2012.03.21, Otsu city.

Sakai, Y., K. Fukumori, K. Nishimatsu, I. Tayasu & N. Okuda “Predator feeding functional diversity as a driver for lake food web alterations”. Kyoto University and The University of Tokyo Global COE Joint Symposium, 2012.01.20-2012.01.21, Tokyo.

Kakioka, R., T. Kokita, H. Kumada, K. Watanabe & N. Okuda Next-generation RAD sequencing for the genome-wide genetic marker discovery and linkage analysis in Gnathopogon fishes. Kyoto University and The University of Tokyo Global COE Joint Symposium, 2012.01.20-2012.01.21, Tokyo.

【Invited Lecture / Honorary Lecture / Panelist】

Okuda, N. Biodiversity-driven Nutrient Cycling and Human Well-being in Social-Ecological Systems. The 4th International Workshop on Future Earth in Asia, 2015.11.19, RIHN, Kyoto.  http://www.futureearth.org/asiacentre/fourth-international-workshop-future-earth-asia-perspectives-south

Okuda, N. Organization of Symposium Session "Methanotrophic food webs as a carbon recycling system". The 62nd ESJ Annual Meeting, 2015.03.21, Kagoshima.