書誌事項
- タイトル別名
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- Seasonal Fluctuations in the Benthic Community after the Collapse of a Clam, Ruditapes philippinarum, Population on the Midori River Tidal Flats in Kumamoto.
- アサリ ノ セイサンリョウ ガ ゲキゲン シタ アト ノ ミドリカワ カコウ ヒガタ ニ セイソク スル テイセイ セイブツ グンシュウ ノ キセツ ヘンカ
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There are sandy tidal flats along the Ariake Sea coast in Kumamoto Prefecture, where 40 to 65 thousand tons of clams, Ruditapes philippinarum, were harvested until the mid-1980s. However, the clam population has collapsed over the past two decades. In the past few years, less than five thousand tons of the clams have been harvested per year. We have studied the population dynamics of several dominant species of bivalves and the benthic community dynamics of the Midori River tidal flats in Kumamoto. The results of population studies of two bivalves, Ruditapes philippinarum and Musculista senhousia, revealed one of the reasons why these populations collapsed on the tidal flats. They suffered high mortality after settling on the substrate. In experimental studies to recover the clam population, sand was brought from the sea floor offshore to the tidal flats, covering an area of 6, 750m2 with a 50cm in depth. Abundant benthic communities over 370gWW/m2 were formed only in areas where new sand had been placed. Several species of bivalves, including Ruditapes philippinarum and Musculista senhousia, polychaetes and other animals occurred densely one year after the treatment. These benthic animals had low mortality after settling on the new substrate.
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 55 1-8, 2000
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
- 1390282679447786624
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- NII論文ID
- 10009499219
- 10008267105
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- NII書誌ID
- AA11376003
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- ISSN
- 1883891X
- 1345112X
- http://id.crossref.org/issn/02851660
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- NDL書誌ID
- 5421634
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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