書誌事項
- タイトル別名
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- Settling fluxes of suspended particulate matter estimated from sediment trap catches in Hiroshima Bay.
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説明
Particulate matter suspended in the water of Hiroshima Bay was collected from 1980 to 1983 in sediment traps and estimations of the settling fluxes and comparison with net photosynthesis rates were made.<BR>The concentrations of particulate matter reaches a maximum in the summer, when the quantity collected in the traps in the 5m layer was small but increased rapidly in the autumn. From this result, it is supposed that the settling of particulate matter seldom occurs as a result of gravitational sinking, and is mainly governed by vertical circulation of the sea water.<BR>Apparent settling velocities of particulate matter calculated from quantities of trap catches were mostly less than 0.5m/d but increased to 46m/d in October, when the ratio of TOC/(Chl. a+phaeo.) of trap catches ranged from 2040, and corresponded with the composition ratio of phytoplankton.<BR>As most of all trap catches probably originate in primary production by phytoplankton considering the composition ratio and the measurement of net photosynthesis in Hiroshima Bay, the decomposition rates of particulate matter in the settling process were calculated to be about 6080% from comparison of the trap catches in the bottom layer with net photosynthesis. The sedimentation rates for each of TOC, TON and T-P in Hiroshima Bay estimated from bottom trap catches were respectively 100, 14 and 3g/m2·y.
収録刊行物
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- 水質汚濁研究
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水質汚濁研究 8 (5), 304-313, 1985
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390282680058746240
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- NII論文ID
- 130000870224
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- ISSN
- 03872025
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
