書誌事項
- タイトル別名
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- Environmental Change and Occurrence Mechanism of Harmful Algal Blooms in the Seto Inland Sea
- セトナイカイ ノ アカシオ ハッセイ キコウ ト カンキョウ ヘンドウ
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The Seto Inland Sea is a semi-enclosed shallow embayment located in the western part of Japan. A great deal of aquaculture is performed in the sea area, and outbreaks of HABs (Harmful Algal Blooms) often cause severe damage to the local fisheries industry. Recently, recurrent winter diatom blooms have come to cause a large-scale reduction in the production of nori culture in Harima Nada (eastern part of the Seto Inland Sea), by depleting dissolved inorganic nitrogen from the coastal waters. The causative species is thought to be Eucampia zodiacus, which is thought to have a holoplanktonic life cycle. E. zodiacus dominates under conditions of relatively low concentration of inorganic nutrients, compared to Skeletonema, Chaetoceros and Thalassiosira species that have a meroplanktonic life cycle. Inorganic nutrient levels in the Seto Inland Sea have fallen since the 1980s, and the causative species of HABs seems to have been changed. We have monitored the number of diatom resting stage cells (Skeletonema, Chaetoceros and Thalassiosira species) in the bottom sediments of the Seto Inland Sea for many years. The results indicate that the dominant species in bottom sediments has changed from Skeletonema (which dominates under relatively high nutrient levels) to Chaetoceros (which dominates under relatively low nutrient levels).
収録刊行物
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- 日本ベントス学会誌
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日本ベントス学会誌 62 57-61, 2007
日本ベントス学会
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詳細情報 詳細情報について
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- CRID
- 1390001204473132160
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- NII論文ID
- 10019559846
- 10019559998
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- NII書誌ID
- AA11376003
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- ISSN
- 1883891X
- 1345112X
- http://id.crossref.org/issn/1345112X
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- NDL書誌ID
- 8907936
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可