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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
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Impacts of meltwater discharge from marine-terminating glaciers on the protist community in Inglefield Bredning, northwestern Greenland
| Title: | Impacts of meltwater discharge from marine-terminating glaciers on the protist community in Inglefield Bredning, northwestern Greenland |
| Authors: | Matsuno, Kohei Browse this author →KAKEN DB | | Kanna, Naoya Browse this author →KAKEN DB | | Sugiyama, Shin Browse this author →KAKEN DB | | Yamaguchi, Atsushi Browse this author →KAKEN DB | | Yang, Eun Jin Browse this author |
| Keywords: | Protist community | | Meltwater discharge | | Marine-terminating glacier | | Ciliates | | Dinoflagellates |
| Issue Date: | 28-May-2020 |
| Publisher: | Inter-Research |
| Journal Title: | Marine ecology progress series |
| Volume: | 642 |
| Start Page: | 55 |
| End Page: | 65 |
| Publisher DOI: | 10.3354/meps13324 |
| Abstract: | To evaluate the effects of meltwater discharge from marine-terminating glaciers on a fjord protist community in northwestern Greenland during summer, we investigated the distribution, abundance and biomass of the protist community and their relationships with hydrographic parameters. In the standing stock of protists, dinoflagellates (46.4%) and oligotrich ciliates (39.5%) were dominant throughout the study region. With respect to vertical distribution, oligotrich ciliates were abundant in the surface layer, mainly due to suitable food conditions (abundance of diatom and nanoflagellates). Near glaciers, relatively high chlorophyll a (chl a) concentrations were found in the subsurface layers associated with the low-temperature, high-turbidity and slightly high nutrient levels, indicating that the nutrient inputs from the upwelling glacial meltwater plume increased primary production. Large-sized Protoperidium spp. were found only at stations near glaciers where nutrients were abundant, and heterotrophic dinoflagellates showed strong relationships with nanoflagellates. These findings suggest that the upwelling associated with subglacial meltwater discharge can stimulate nanoflagellate production, resulting in increases in ciliate and heterotrophic dinoflagellate production. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/81543 |
| Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松野 孝平
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