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Hokkaido University Collection of Scholarly and Academic Papers >
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The effects of endangered freshwater pearl mussels on channel morphology and flow in a low-gradient sandy river
| Title: | The effects of endangered freshwater pearl mussels on channel morphology and flow in a low-gradient sandy river |
| Authors: | Miura, Kazuki Browse this author | | Watanabe, Nozomi Browse this author | | Takagi, Yuuka Browse this author | | Ishiyama, Nobuo Browse this author →KAKEN DB | | Negishi, Junjiro N. Browse this author →KAKEN DB |
| Keywords: | BACI | | Ecosystem engineer | | Endangered species | | Erosion | | Hydromorphology | | Invertebrates |
| Issue Date: | Dec-2021 |
| Publisher: | Springer |
| Journal Title: | Hydrobiologia |
| Volume: | 848 |
| Issue: | 21 |
| Start Page: | 5119 |
| End Page: | 5134 |
| Publisher DOI: | 10.1007/s10750-021-04696-6 |
| Abstract: | Conservation of ecosystem engineers, which modulates the surrounding habitat by causing physical state changes in biotic or abiotic materials, is important for maintaining the functional integrity of ecosystems. This study examined the effects of endangered freshwater pearl mussels (Margaritifera laevis and M. togakushiensis) on channel morphology and flow in a low-gradient sandy river. For this, we performed a field removal experiment of mussels using three treatments in twelve 10-m reaches. Mussel abundance and biomass, and three physical variables were measured before, immediately after, and two months to one year after the treatments. Mussel removal resulted in channel degradation with a 60% increase in flow depth, a 30% decrease in current velocity, and a 50% reduction in the width-to-depth ratio two months after the treatments, whereas minimal changes were measured in reaches with mussels. The results indicated that pearl mussels act as an ecosystem engineer affecting the channel morphology and flow of sandy rivers. The conservation of the pearl mussel populations is key to preserving their far-reaching benefits in ecosystem integrity including habitats for other various organisms. |
| Rights: | This is a post-peer-review, pre-copyedit version of an article published in Hydrobiologia. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10750-021-04696-6 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/87364 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 根岸 淳二郎
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