[A-HW24] Material transportation and cycling at the land-sea interface: from headwaters to the ocean

Tue. May 24, 2022 9:00 AM - 10:30 AM 303 (International Conference Hall, Makuhari Messe)

convener:Jun Yasumoto(University of the Ryukyus, Faculty of Agriculuture), convener:Masahiro Kobayashi(Forestry and Forest Products Research Institute), Noboru Okuda(Kobe University), convener:Adina Paytan(University of California Santa Cruz), Chairperson:Jun Yasumoto(University of the Ryukyus, Faculty of Agriculuture)

This session aims to synthetize watershed-based sciences to better understand dynamic processes in transportation and cycling of materials and nutrients at the land-sea interface from headwaters to the ocean via rivers, groundwater, and coastal lakes. The session will integrate research from various disciplines including limnology, groundwater hydrology, coastal oceanography, meteorology, soil science, sedimentology, forestry, agriculture, fishery, ecology, social science, and other related fields. This session calls for sharing new methods such as tracers and molecular techniques, hydrological modeling, paleontological approaches, and chemical analyses that help to elucidate physical, chemical, and biological mechanisms in terrestrial-aquatic ecosystems. Moreover, it seeks to shed light on the complex and dynamic terrestrial-aquatic systems and their spatio-temporal variations in a changing climate and environment. Laboratory-based and field-based studies, social and socioeconomic evaluation of ecosystem services and social-ecological systems are also welcomed. Through this session, we would like to facilitate interdisciplinary collaboration among participants to create a new watershed-based science that considers the overall interrelationship between headwaters and the ocean.

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9:00 AM - 9:15 AM

[AHW24-01] Climate impacts on benthic biodiversity in a deep ancient Lake Biwa

*Noboru Okuda^1,6, Hirona Okamoto¹, Masayuki Itoh², Akifumi Ohtaka³, Megumu Fujibayashi⁴, Yuki Kobayashi⁵ (1.Kobe University, 2.University of Hyogo, 3.Hirosaki University, 4.Kyushu University, 5.Yamaguchi University, 6.Research Institute for Humanity & Nature)

9:15 AM - 9:30 AM

[AHW24-02] Spatial variation in methane oxidizing bacterial communities in the bottom boundary layer of Lake Biwa under warming

*Yuki Kobayashi¹, Hirona Okamoto², Masayuki Itoh³, Megumu Fujibayashi⁴, Noboru Okuda² (1.Yamaguchi University, 2.Kobe University, 3.University of Hyogo, 4.Kyushu University)

9:30 AM - 9:45 AM

[AHW24-03] Spatial pattern of methanotrophic food webs in Lake Biwa under changing climates

*Megumu Fujibayashi¹, Hirona Okamoto², Yuki Kobayashi³, Masayuki Itoh⁴, Akifumi Ohtaka⁵, Noboru Okuda^2,6 (1.Kyushu University, 2.Kobe University, 3.Yamaguchi University, 4.University of Hyogo, 5.Hirosaki University, 6.Research Institute for Humanity & Nature)

9:45 AM - 10:00 AM

[AHW24-04] Nitrogen subsidy from profundal methane-oxidizing bacteria cascades across pelagic food web in a deep meso-oligotrophic reservoir

*Erica Silk Perez dela Paz¹, Pei-Chi Ho⁴, Fan-Sian Lin², Chih-hao Hsieh², Chaochen Lai³, Fuh-Kwo Shiah³, Chia-Ying Ko¹, Noburo Okuda^5,6 (1.Institute of Fisheries Science, National Taiwan University, Taipei, Taiwan, 2.Institute of Oceanography, National Taiwan University, Taipei, Taiwan, 3.Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan, 4.Graduate School of Life Science, Tohoku University, Japan, 5.Research Center for Humanity and Nature, Kyoto, Japan, 6.Research Center for Inland Seas, Graduate School of Science, Kobe University, Kobe, Japan)

10:00 AM - 10:15 AM

[AHW24-05] Southern Urban Hydrosystem Syndrome in Marikina Watershed Revealed by Taxonomic and Functional Diversity of Benthic Macroinvertebrates

*Kamille Nacalaban Poblete¹, Dimple May Gianne Q. Dumaguit¹, Elfritzson M. Peralta^1,2,3, Francis S. Magbanua⁴, Rey Donne S. Papa^1,2,3, Noboru Okuda^5,6 (1.Department of Biological Sciences, College of Science, University of Santo Tomas, España Boulevard, Manila, 1015, Philippines, 2.The Graduate School, University of Santo Tomas, España Boulevard, Manila, 1015, Philippines, 3.Research Center for the Natural and Applied Sciences, University of Santo Tomas, España Boulevard, Manila, 1015, Philippines, 4.Institute of Biology, University of the Philippines Diliman, Quezon City, 1101, Philippines, 5.Research Center for Inland Seas, Kobe University, Japan, 6.Research for Humanity & Nature, Japan)

10:15 AM - 10:30 AM

[AHW24-06] Effect of seagrass-seaweed bed dynamics on carbon and nitrogen cycles on a tidal flat scale

*Mitsuyo Saito¹, Shin-ichi Onodera², Fujio Hyodo¹, Kazuki Iwamoto³, Takuya Akinaga¹ (1.Graduate School of Environmental and Life Science, Okayama University, 2.Graduate School of Advanced Science and Engineering, Hiroshima University, 3.Faculty of Environmental Science and Technology, Okayama University)

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