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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41230

Title: Viral Lysis and Nanoflagellate Grazing as Factors Controlling Diel Variations of Synechococcus spp. abundance during summer in Taiwan coastal waters
Authors: An-Yi Tsai
Gwo-Ching Gong
Robert W. Sanders
Kuo-Ping Chiang
Jun-Kai Huang
Ya-Fan Chan
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: Modified dilution method
Synechococcus spp.
Viruses
Nanoflagellates
Date: 2012-05
Issue Date: 2017-02-10T06:08:54Z
Publisher:  Aquatic Microbial Ecology
Abstract: ABSTRACT: Diel variations in the protozoan grazing and viral-mediated mortality of Synechococcus spp. were simultaneously estimated using a modified dilution method in the coastal waters off Taiwan during 4 cruises in summer 2011. During the study period, the abundance of Synechococcus spp. showed a clear diel cycle and ranged from 1.2 × 104 cells ml−1 at 08:00 h to 9.8 × 104 cells ml−1 at midnight. The frequency of dividing cell (FDC) values were highest between afternoon and dusk and decreased to <10% between 20:00 and 08:00 h. Synechococcus spp. specific growth rates varied during the experimental period from 0.025 to 0.033 h−1 and 0.050 to 0.085 h−1 at daytime and nighttime, respectively. Rates of Synechococcus spp. mortality due to nanoflagellate grazing averaged 0.031 h−1 during daytime and 0.041 h−1 at night. The estimated mortality due to viral lysis was between 0.011 and 0.019 h−1 during daytime and between 0.026 and 0.065 h−1 at night. Nanoflagellate grazing was the dominant cause of Synechococcus spp. mortality during daytime; however, mortality from viral lysis and nanoflagellate grazing was more balanced at night.
Relation: 66(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41230
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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