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Open AccessArticle

Effect of Hydrographic Variability on the Distribution of Microbial Communities in Taiwan Strait in Winter

1
Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan
2
Center of Excellence for the Oceans, National Taiwan Ocean University Keelung 202-24, Taiwan
3
Marine Fisheries Division, Fisheries Research Institute, Council of Agriculture, Taipei 202, Taiwan
4
Institute of Oceanography, Nation Taiwan University, Taipei 10617, Taiwan
*
Author to whom correspondence should be addressed.
Diversity 2019, 11(10), 193; https://doi.org/10.3390/d11100193
Received: 2 September 2019 / Revised: 9 October 2019 / Accepted: 11 October 2019 / Published: 14 October 2019
(This article belongs to the Special Issue Biodiversity of Marine Microbes)
This study investigated the spatial variation in the components of a microbial food web (viruses, picoplankton, nanoflagellates, and ciliates) in different hydrographic environments in the Taiwan Strait during winter. Water temperature and salinity varied spatially, with lower temperatures (15.3–22.8 °C) and salinities (32.2–33.4 psu) in the northern part of the Taiwan Strait, largely affected by runoff from the coast of China. Concentrations of nutrients and Chl a were significantly higher in the northern part than that in the southern part of the study area. Synechococcus spp., nanoflagellate, and ciliate abundance also varied significantly, with the northern strait having higher abundances of these communities. In contrast, a higher abundance of bacteria was found in the southern part of the Taiwan Strait. The results of this study, which describes two different ecosystems in the Taiwan Strait, suggest that during winter, a “viral loop” might play an important role in controlling bacterial production in the southern part of the Taiwan Strait, while nanofalgellate grazing of picophytoplankton may contribute mainly to the flux of energy in the northern part. View Full-Text
Keywords: microbial food web; bacteria; nanoflagellates; ciliates; Taiwan Strait microbial food web; bacteria; nanoflagellates; ciliates; Taiwan Strait
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Gong, G.-C.; Yeh, H.-M.; Chen, Y.-K.; Hsieh, C.-H.; Ho, P.-C.; Tsai, A.-Y. Effect of Hydrographic Variability on the Distribution of Microbial Communities in Taiwan Strait in Winter. Diversity 2019, 11, 193.

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