Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan
Study focus: There have been far more studies on how the variability in surface water discharge affects production of animal communities in aquatic ecosystems while less information has been accumulated on the mechanisms of how the groundwater supply works. Study region: Physical and biological surv...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-06-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581815001275 |
| _version_ | 1819232251690352640 |
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| author | Tatsuya Utsunomiya Masaki Hata Ryo Sugimoto Hisami Honda Shiho Kobayashi Yoji Miyata Makoto Yamada Osamu Tominaga Jun Shoji Makoto Taniguchi |
| author_facet | Tatsuya Utsunomiya Masaki Hata Ryo Sugimoto Hisami Honda Shiho Kobayashi Yoji Miyata Makoto Yamada Osamu Tominaga Jun Shoji Makoto Taniguchi |
| author_sort | Tatsuya Utsunomiya |
| collection | DOAJ |
| description | Study focus: There have been far more studies on how the variability in surface water discharge affects production of animal communities in aquatic ecosystems while less information has been accumulated on the mechanisms of how the groundwater supply works.
Study region: Physical and biological surveys were conducted to test the hypothesis that high level of submarine ground water discharge enhances species richness, abundance and biomass of fishes and invertebrates in coastal waters of Obama Bay, Japan, where a high contribution of nutrients (ca. 65% of phosphorus) to total provided through all freshwater has been reported. Survey for horizontal distribution of radon-222 (222Rn) concentration showed high levels of submarine groundwater discharge in the west part of survey area. Fish and invertebrate communities were compared within a relatively small spatial scale (ca. 100 m) in relation to level of submarine groundwater discharge.
New hydrological insights: Species richness, abundance and biomass of fishes and abundance and biomass of turban snail and hermit crab were significantly higher in the area with high 222Rn concentration. Abundance of gammarids, the most major prey item of the fishes, was 18 times higher in the area with high 222Rn concentration. Since the turban snail, hermit crab and gammarids feed on producers (phytoplankton and benthic microalgae), submarine groundwater are concluded to increase species richness and production of fishes and invertebrates through providing nutrients and enhancing primary production. |
| first_indexed | 2024-12-23T11:57:53Z |
| format | Article |
| id | doaj.art-8df42245ddbb4df0888bb235c819fbfd |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-12-23T11:57:53Z |
| publishDate | 2017-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-8df42245ddbb4df0888bb235c819fbfd2022-12-21T17:48:01ZengElsevierJournal of Hydrology: Regional Studies2214-58182017-06-0111C13914610.1016/j.ejrh.2015.11.012Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, JapanTatsuya Utsunomiya0Masaki Hata1Ryo Sugimoto2Hisami Honda3Shiho Kobayashi4Yoji Miyata5Makoto Yamada6Osamu Tominaga7Jun Shoji8Makoto Taniguchi9Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Hiroshima 739-8528, JapanGraduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Hiroshima 739-8528, JapanDepartment of Marine Bioscience, Fukui Prefectural University, 1-1 Gakuen, Obama, Fukui 917-0003, JapanResearch Institute for Humanity and Nature, 457-4 Kamigamo-motoyama, Kita, Kyoto 603-8047, JapanField Science Education and Research Center, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, JapanField Science Education and Research Center, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, JapanResearch Institute for Humanity and Nature, 457-4 Kamigamo-motoyama, Kita, Kyoto 603-8047, JapanDepartment of Marine Bioscience, Fukui Prefectural University, 1-1 Gakuen, Obama, Fukui 917-0003, JapanGraduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Hiroshima 739-8528, JapanResearch Institute for Humanity and Nature, 457-4 Kamigamo-motoyama, Kita, Kyoto 603-8047, JapanStudy focus: There have been far more studies on how the variability in surface water discharge affects production of animal communities in aquatic ecosystems while less information has been accumulated on the mechanisms of how the groundwater supply works. Study region: Physical and biological surveys were conducted to test the hypothesis that high level of submarine ground water discharge enhances species richness, abundance and biomass of fishes and invertebrates in coastal waters of Obama Bay, Japan, where a high contribution of nutrients (ca. 65% of phosphorus) to total provided through all freshwater has been reported. Survey for horizontal distribution of radon-222 (222Rn) concentration showed high levels of submarine groundwater discharge in the west part of survey area. Fish and invertebrate communities were compared within a relatively small spatial scale (ca. 100 m) in relation to level of submarine groundwater discharge. New hydrological insights: Species richness, abundance and biomass of fishes and abundance and biomass of turban snail and hermit crab were significantly higher in the area with high 222Rn concentration. Abundance of gammarids, the most major prey item of the fishes, was 18 times higher in the area with high 222Rn concentration. Since the turban snail, hermit crab and gammarids feed on producers (phytoplankton and benthic microalgae), submarine groundwater are concluded to increase species richness and production of fishes and invertebrates through providing nutrients and enhancing primary production.http://www.sciencedirect.com/science/article/pii/S2214581815001275RadonStomach contentsFeedingFood webGammaridSpecies diversity |
| spellingShingle | Tatsuya Utsunomiya Masaki Hata Ryo Sugimoto Hisami Honda Shiho Kobayashi Yoji Miyata Makoto Yamada Osamu Tominaga Jun Shoji Makoto Taniguchi Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan Journal of Hydrology: Regional Studies Radon Stomach contents Feeding Food web Gammarid Species diversity |
| title | Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan |
| title_full | Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan |
| title_fullStr | Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan |
| title_full_unstemmed | Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan |
| title_short | Higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in Obama Bay, Japan |
| title_sort | higher species richness and abundance of fish and benthic invertebrates around submarine groundwater discharge in obama bay japan |
| topic | Radon Stomach contents Feeding Food web Gammarid Species diversity |
| url | http://www.sciencedirect.com/science/article/pii/S2214581815001275 |
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