Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan
Stalked crinoids are recognized as living fossils that typically inhabit modern deep-water environments exceeding 100 m. Previous records of stalked crinoids from hadal depths (exceeding 6000 m) are extremely rare, and no in-situ information has been available. We show here that stalked crinoids liv...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Nihon Dobutsu Gakkai
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/45854 |
| _version_ | 1848757400525340672 |
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| author | Oji, T. Ogawa, Y. Hunter, Aaron Kitazawa, K. |
| author_facet | Oji, T. Ogawa, Y. Hunter, Aaron Kitazawa, K. |
| author_sort | Oji, T. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Stalked crinoids are recognized as living fossils that typically inhabit modern deep-water environments exceeding 100 m. Previous records of stalked crinoids from hadal depths (exceeding 6000 m) are extremely rare, and no in-situ information has been available. We show here that stalked crinoids live densely on rocky substrates at depths over 9000 m in the Izu-Ogasawara Trench off the eastern coast of Japan, evidenced by underwater photos and videos taken by a remotely operated vehicle. This is the deepest in-situ observation of stalked crinoids and demonstrates that crinoid meadows can exist at hadal depths close to the deepest ocean floor, in a fashion quite similar to populations observed in shallower depths. ©2009 Zoological Society of Japan. |
| first_indexed | 2025-11-14T09:27:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-45854 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:27:30Z |
| publishDate | 2009 |
| publisher | Nihon Dobutsu Gakkai |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-458542017-09-13T14:25:26Z Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan Oji, T. Ogawa, Y. Hunter, Aaron Kitazawa, K. Stalked crinoids are recognized as living fossils that typically inhabit modern deep-water environments exceeding 100 m. Previous records of stalked crinoids from hadal depths (exceeding 6000 m) are extremely rare, and no in-situ information has been available. We show here that stalked crinoids live densely on rocky substrates at depths over 9000 m in the Izu-Ogasawara Trench off the eastern coast of Japan, evidenced by underwater photos and videos taken by a remotely operated vehicle. This is the deepest in-situ observation of stalked crinoids and demonstrates that crinoid meadows can exist at hadal depths close to the deepest ocean floor, in a fashion quite similar to populations observed in shallower depths. ©2009 Zoological Society of Japan. 2009 Journal Article http://hdl.handle.net/20.500.11937/45854 10.2108/zsj.26.406 Nihon Dobutsu Gakkai restricted |
| spellingShingle | Oji, T. Ogawa, Y. Hunter, Aaron Kitazawa, K. Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan |
| title | Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan |
| title_full | Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan |
| title_fullStr | Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan |
| title_full_unstemmed | Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan |
| title_short | Discovery of dense aggregations of stalked crinoids in Izu-Ogasawara trench, Japan |
| title_sort | discovery of dense aggregations of stalked crinoids in izu-ogasawara trench, japan |
| url | http://hdl.handle.net/20.500.11937/45854 |