Biochemical Changes of Sedimented Matter in Sediment Trap in Shallow Coastal Waters

沿岸域の垂下セディメント・トラップ中での沈殿粒状物の生化学的変化

Isaki Kazuo

Whitney F.

Wong C.S.

日本プランクトン学会報

Decomposition, carbon uptake and biochemical changes of sedimented matter, which was mainly composed of phytoplankton cells and fecal pellets of zooplankton, collected by sediment traps were examined both in situ and in laboratory experiments in order to evaluate the distorting effect upon actual quantities and qualities of sedimented matter during collection. In situ carbon uptake had negligible effect on gross sedimentation even if a trap was suspended in shallow waters (13 m) in Saanich Inlet, B.C., Canada, due to poor penetration of solar radiation and shading effects by trap. However, decomposition rate gave a significant effect, showing a considerable loss against sedimentation rate.

It was suggested to select a suitable suspension period of sediment trap in order to minimize distorting effects. It was also recommended to use preservatives to inhibit biochemical processes for a long term suspension of trap.

Zoology [ 480 ]

eng

日本プランクトン学会

農林水産研究情報センター

Copyright (c) 1980 The Plankton Society of Japan

[ISSN] 0387-8961

[NCID] AN00197015