Japan Geoscience Union Meeting 2016

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Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG23] Coastal Ecosystems - 1. Water Cycle and Land-Ocean Interactions

Tue. May 24, 2016 10:45 AM - 12:15 PM 301A (3F)

Convener:*Jun Shoji(Hiroshima University), Ryo Sugimoto(Faculty of Marine Biosciences, Fukui Prefectural University), Makoto Yamada(Research Institute for Humanity and Nature), Masahiko Ono(National Institute of Advanced Industrial Science and Technology), Chair:Ryo Sugimoto(Faculty of Marine Biosciences, Fukui Prefectural University), Makoto Yamada(Research Institute for Humanity and Nature)

12:00 PM - 12:15 PM

[ACG23-11] Possible effects of the global warming on fish species diversity and production through submarine groundwater in coastal areas

*Jun Shoji1, Ryo Sugimoto2, Hisami Honda3, Osamu Tominaga2, Shiho Kobayashi4, Makoto Yamada3, Makoto Taniguchi3 (1.Hiroshima University, 2.Fukui Prefectural University, 3.Research Institute for Humanity and Nature, 4.Kyoto University)

Keywords:submarine groundwater, fish, distribution, species diversity, biomass, wood web

In order to forecast possible effects of the global warming on fish species diversity and production through changes in submarine groundwater discharge, physical and biological surveys were conducted at three sites in Japan (Yuza, Yamagata Pref., Obama, Fukui Pref., Takehara, Hiroshima Pref.), where submarine groundwater discharge has been observed.. Number of fish species, fish abundance and biomass were compared between areas of different levels of Radon concentration at each site. Contribution of nutritional matters of terrestrial origin through submarine groundwater was evaluated by analyses of stomach contents and stable isotopes of fishes.