Relationships Between Submarine Groundwater Discharge and Coastal Fisheries as a Water-Food Nexus
We introduced the results of investigations conducted in Japan (Yamagata, Fukui, Hiroshima and Oita Prefectures) and discussed the contribution of SGD to the production of fishery resources and their prey (meiobenthic communities). Our recent surveys provided evidence of the contribution of SGD to the production of fishes and their prey. These results strongly support the hypothesis that the contribution of nutrients from SGD to the coastal fishery resources production is much higher than previously suggested. The negative ecological impacts of SGD on meiofaunal abundance were confirmed at the high seepage areas of Kamaiso where the small spatial scale presented strong heterogeneity in SGD environmental conditions. However, the meiofaunal abundance was not low at the low seepage area located slightly apart from the high seepage area. Therefore, the effect of SGD on meiofaunal communities could be limited. However, the environmental heterogeneity significantly enhanced the conservation of the meiofaunal diversity. Thus, SGD determined the property of benthic communities.
KeywordsSubmarine ground water Fishery resources Meiofauna Production
- Akimichi T (2010) Water and life around Mt. Chokai – a report from the region. Tohoku Kikaku Publishing, YamagataGoogle Scholar
- Shiokawa M, Yamaguchi A, Umezawa Y (2013) Estimation of groundwater-derived nutrient inputs into the west coast of Ariake Bay. Bull Coast Oceanogr 50:157–167Google Scholar
- Shoji J, Sugimoto R, Tominaga O (2017) Land-ocean interactions through groundwater/submarine groundwater and human society. Koseisha-koseikaku, TokyoGoogle Scholar
- Sugimoto R, Honda H, Suzuki T, Ochiai S, Taniguchi M, Nagao S (2014) Effects of submarine groundwater discharge on nutrient concentrations in the western part of Nanao Bay in summer. Bull Jpn Soc Fish Oceanogr 78:114–119Google Scholar
- Utsunomiya T, Hata M, Sugimoto R, Honda H, Kobayashi S, Miyata Y, Yamada M, Tominaga O, Shoji J, Taniguchi M (2017) Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan. J Hydrol Reg Stud 11:139–146. doi.org/10.1016/j.ejrh.2015.11.012 CrossRefGoogle Scholar