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Viral and nanoflagellate control of bacterial production in the East China Sea summer 2011

机译：2011年夏季东海细菌的病毒和纳米鞭毛控制

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摘要

This study investigated spatial patterns in bacterial, viral, nanoflagellate abundance and the loss of bacterial production due to viral lysis and nanoflagellate grazing across the surface water of East China Sea (ECS) during the summer (1-12 July) of 2011. Abundance of bacteria ranged from 1.3 × 10~5 to 12.4 × 10~5 cells mL~(-1), with the highest value found in surface coastal waters, coinciding with a peak in Chl a concentrations. Spatial variations in bacterial growth rates ranged from 0.029 to 0.071 h~(-1), the highest growth rate near the river mouth of the Changjiang River. Nanoflagellate grazing was responsible for most of the bacterial mortality, accounting for 59% of total mortality within the plume (salinity <31) and 66% outside the plume (salinity >31) on average. Variation in viral lysis was associated with environmental gradients and bacterial abundance. We found a balance budget between bacterial losses due to both bacterivory and viral infection and production, which suggests strong top-down control of bacteria in the ECS during the summer.
机译：这项研究调查了2011年夏季（7月1日至12日）整个东海（ECS）地表水的细菌，病毒，纳米鞭毛的丰度以及由于病毒裂解和纳米鞭毛放牧引起的细菌产量损失的空间格局。细菌的范围从1.3×10〜5到12.4×10〜5细胞mL〜（-1），在沿海近岸水域中发现的最高值，与Chla浓度的峰值一致。细菌生长速率的空间变化范围为0.029〜0.071h〜（-1），是长江河口附近最高的生长速率。纳米鞭毛放牧是造成大多数细菌死亡的原因，平均占烟羽内总盐度（盐度<31）的59％，烟羽外总盐度（盐度> 31）的66％。病毒裂解的变化与环境梯度和细菌丰度有关。我们发现由于细菌和病毒感染以及生产引起的细菌损失之间的平衡预算，这表明夏季ECS中细菌的自上而下的强有力控制。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2013年第20期|33-41|共9页
  • 作者

    An-Yi Tsai; Gwo-Ching Gong; Jun-Kai Huang; Yun-Chi Lin;

  • 作者单位

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan;

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan,Center of Excellence for Marine Bioenvironmental and Biotechnology, National Taiwan Ocean University, Taiwan,Taiwan Ocean Research Institute, National Applied Research Laboratories, Taiwan;

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan;

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    pacterial production; changjiang river; nanoflagellate grazing; viral lysis;

    机译：餐饮业长江纳米鞭毛放牧;病毒裂解;

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