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The Decline of Ecklonia cava in Kochi, Japan and the Challenge in Marine Afforestation
http://hdl.handle.net/10126/3176
http://hdl.handle.net/10126/31761c0346b5-8d8d-4dde-bd66-e589bbdc76c4
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
049HaraguchiH.pdf (611.5 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2009-09-24 | |||||
| タイトル | ||||||
| タイトル | The Decline of Ecklonia cava in Kochi, Japan and the Challenge in Marine Afforestation | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | Ecklonia cava | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | marine afforestation | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | marine herbivorous fish | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | seawater temperature | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題 | sea urchin | |||||
| 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 | |||||
| 著者 |
Haraguchi, Hiroko
× Haraguchi, Hiroko× Tanaka, Kouki× Imoto, Zenji× Hiraoka, Masanori |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In the coastal waters of Kochi, Ecklonia cava formed dense beds until the 1980’s. However, these beds have declined rapidly since the 1990’s. The reasons for the decline of E. cava are the rise in seawater temperature along with grazing by sea urchins and marine herbivorous fish. Many researchers have conducted marine afforestation of E. cava beds. There are three main afforestation methods. The first is transplantation using adult plants or young plants cultured from fertilized eggs in indoor tanks. The second is to use a spore bag. The last method is to use a net cage for protection from grazing by herbivorous fish. Marine afforestation of E. cava using the spore bag method was tried at an Isoyake (barren ground) area in autumn. Many young sporophytes appeared around the spore bags in the following spring. However, several years later these plants completely disappeared due to grazing by marine herbivorous fish and sea urchins. In another afforestation attempt using a net cage, most of the E. cava were destroyed by high temperatures during summer, even though they were protected from fish. Although some afforestation attempts failed, others succeeded. Namely that is the afforestation using artificial reefs with seedlings. This results in constant growth and reproduction of E. cava. E. cava beds, which though small are similar to natural beds, have been formed around the artificial reefs now. This area maintains low seawater temperature and the grazing pressure from sea urchins and marine herbivorous fish is also low. Thus, it is important to select a suitable site for marine afforestation of Eclonia cava beds. | |||||
| 書誌情報 |
黒潮圏科学 = Kuroshio Science 巻 3, 号 1, p. 49-54, 発行日 2009-03-25 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1882823X | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12321175 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版者 | ||||||
| 出版者 | Graduate School of Kuroshio Science, Kochi University | |||||
| 言語 | en | |||||
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Cite as
Haraguchi, Hiroko, Tanaka, Kouki, Imoto, Zenji, Hiraoka, Masanori, 2009, The Decline of Ecklonia cava in Kochi, Japan and the Challenge in Marine Afforestation: Graduate School of Kuroshio Science, Kochi University, 49–54 p.
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