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Restoration of kelp beds on an urchin barren: Removal of sea urchins by citizen divers in southwestern Hokkaido
https://fra.repo.nii.ac.jp/records/2010900
https://fra.repo.nii.ac.jp/records/20109008f274f2a-680d-49a2-871d-fac83fff2a0a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fra_k_32_83.pdf (2.5 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||
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| 公開日 | 2024-10-02 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Restoration of kelp beds on an urchin barren: Removal of sea urchins by citizen divers in southwestern Hokkaido | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| キーワード | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||
| 主題 | grazing; Saccharina japonica var. religiosa; sea urchins; Strongylocentrotus nudus; kelp beds; monitoring; remov | |||||||||||||||||
| 資源タイプ | ||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||||||||
| アクセス権 | ||||||||||||||||||
| アクセス権 | open access | |||||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||
| 著者 |
WATANUKI, Akira
× WATANUKI, Akira
× AOTA, Toru
× OTSUKA, Eiji
× KAWAI, Tadashi
× IWAHASHI, Yoshitoshi
× 桑原, 久実× FUJITA, Daisuke
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | Along the southwestern coast of Hokkaido, urchin barren dominated by a sea urchin Strongylocentrotus nudus and nongeniculate coralline algae has persisted for a long time (locally > 80 years) while kelp beds comprised of Saccharina japonica var. religiosa and Undaria pinnatifida has been restricted in shallow waters largely less than 2 m in depth. Although previous studies have revealed that S. nudus is the causative grazer of the barren state by removal of and/or defense from the sea urchin, no practical efforts have been done for the improvement of fisheries ground. As the fishermen on the coast are aged and depopulated, the authors introduced citizen volunteer divers (CVD) for the removal of the sea urchin. The attempt was practiced on an urchin barren near Kamoenai Fishing Port on the southern coast of Shakotan Peninsula in September 2005. Twenty CVD (including a few instructors and staffs) removed sea urchins from two blocks (50 x 50 m, 4-8m in depth) during two dives (ca. 1 hr/dive) beside the control block; subsequent monthly removal by monitors (i.e., researchers) was done in one of the two blocks. In May 2006, the average standing crops of the seaweed (largely kelp) were 865g/m2 (monthly removed after the CVD activity) and 150g/m2 (removed once by CVD) but 0g/m2 in control, while the density of sea urchin were 0.1, 3.5 and 4.2/m2 , respectively. The results show that the introduction of CVD can aid the restoration of kelp beds. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 書誌情報 |
ja : 水産総合研究センター研究報告 en : Bulletin of Fisheries Research Agency 巻 32, p. 83-87, ページ数 5, 発行日 2010-12 |
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| 出版者 | ||||||||||||||||||
| 出版者 | 水産総合研究センター | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||
| 収録物識別子 | 1346-9894 | |||||||||||||||||
| 書誌レコードID | ||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AA11589591 | |||||||||||||||||
| 情報源 | ||||||||||||||||||
| 識別子タイプ | Local | |||||||||||||||||
| 関連識別子 | fra_k_32_83 | |||||||||||||||||
| 著者版フラグ | ||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||
