The effect of the Yellow Sea Warm Current (YSWC) on virio- and bacterioplankton communities in the Bohai Sea is unknown. In this study, the composition and dynamic changes of virio- and bacterioplankton at the entrance of the Bohai Sea were measured to determine the influence of the YSWC on those communities and vice versa. In the Bohai Strait, there were east to west gradients of water chemistry and hydrology. The turbulent mixing between the deep north-western ‘warm’ current, which is 9°C, and the cold, nutrient-rich Bohai Sea water at 7–8°C appears to stimulate the abundance of both viruses and heterotrophic bacteria, with numbers at the junction of ‘warm’ and cold water being almost 10-fold greater than in the low-thermohaline areas, and peaking where the temperature is the highest. The average viral and bacterial abundances in the north-eastern area are much higher than in the south-western area. It proved that the YSWC entered the Bohai Sea with poor biomass and exited with rich biomass, which, in turn, enriches the Yellow Sea microbial loop. Our results showed the dramatic effect of temperature rise and increasing eutrophication on microbial abundance and marine microbial communities.

中文翻译：

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冬季黄海暖流冲刷渤海微生物群落

黄海暖流（YSWC）对渤海浮游病毒和浮游细菌群落的影响尚不清楚。本研究测量了渤海入口处浮游病毒和浮游细菌的组成和动态变化，以确定YSWC对这些群落的影响，反之亦然。在渤海海峡，水化学和水文呈东向西梯度。9°C 的深西北“暖”流与 7-8°C 的寒冷、富含营养的渤海海水之间的湍流混合似乎刺激了病毒和异养细菌的大量存在在“暖”水和冷水交界处的温度几乎是低温盐地区的 10 倍，并且在温度最高的地方达到峰值。东北地区的平均病毒和细菌丰度远高于西南地区。证明黄海藻进入渤海时生物量较差，出境时生物量丰富，丰富了黄海微生物圈。我们的结果表明温度升高和富营养化对微生物丰度和海洋微生物群落的显着影响。