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Seasonal Dynamics of Ciliate Cysts and the Impact of Short-Term Change of Salinity in a Eutrophic Coastal Marine Ecosystem

並列摘要


This study investigated the seasonal dynamics of planktonic ciliates, including their cyst production, in a eutrophic coastal ecosystem in the subtropical western Pacific from March 2008 to July 2009. The abundance of planktonic ciliates ranged from 0.2 to 13 × 10^2 cells L^(-1) and cyst production ranged from 0 to 3 × 10^4 cysts m^(-2) d^(-1) during the study period. The dominant cyst types in this study were Type I and Type II which are similar to Strombidium conicum and Strombidium capitatum, respectively. Cyst abundance changed with inter-day variations in salinity during the warm season (> 24°C), leading us to conclude that environmental change in the form of freshwater input contributed greatly to the encystment of ciliate populations and might be the primary factor controlling encystment production.

並列關鍵字

Ciliate Encystment Salinity Subtropical water

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