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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41216

Title: Contribution of viral lysis and nanoflagellate grazing to bacterial mortality at surface waters and deeper depths in the coastal ecosystem of subtropical western Pacific
Authors: An-Yi Tsai
Gwo-Ching Gong
Chien Fu Chao
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: Bacterial growth rates
Nanoflagellate grazing
Viral lysis
Bacterial mortality
Date: 2016-09
Issue Date: 2017-02-10T03:19:16Z
Publisher: Estuaries and Coasts
Abstract: Abstract: Since nanoflagellate grazing and viral lysis differ in their impact on the microbial food web, it is important to assess their relative importance on bacterial mortality fractions. This study investigated the abundance of microbial assemblages and the loss of bacteria due to viral lysis and nanoflagellate grazing at two different depths (3 and 135 m) in the coastal waters of subtropical western Pacific during summer (July, August, and September 2012). The bacterial growth rates in the surface waters varied from 0.07 to 0.09 h−1, a range higher than those found in the deep waters (0.013 to 0.016 h−1). The grazing rates of nanoflagellates on bacteria ranged from 0.051 to 0.058 h−1 and from 0 to 0.004 h−1 in the surface and deep waters, respectively. During the study period, nanoflagellate grazing was responsible for most of bacterial mortality (81–87 %) relative to viral lysis in the surface waters, while viral lysis was responsible for 67–75 % of the total bacterial mortality in the deep waters.
Relation: 39(5)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41216
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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