Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea

Jee Eun Lee; Ik Kyo Chung; Sang-Rae Lee

doi:10.1007/s00343-017-6076-7

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Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea

OriginalPaper | Updated：2023-05-16

- Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea
- Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea
- 海洋湖沼学报（英文） 2017年35卷第4期页码：844-857
- Affiliations：
  
  1. Division of Earth Environmental System Oceanography Major Pusan National University
  2. Marine Research Institute Pusan National University
- Author bio：
- Funds：
  
  Supported by the East Asian Seas Time Series-I (No. EAST-I), the Ministry of Oceans and Fisheries, Korea, the “Development of Microbial Metagenomic Techniques for a Fine-Scale Seawater Mass Analysis” through the Ministry of Education of the Republic of Korea, and the National Research Foundation of Korea (No. NRF-2013R1A1A2006915)
- DOI：10.1007/s00343-017-6076-7
  中图分类号：
- 网络首发：2016-08-12，
  
  纸质出版：2017
- Accepted：
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Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea[J]. 海洋湖沼学报（英文）, 2017,35(4):844-857.

Lee, J.E., Chung, I.K. & Lee, SR. Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea., Chin. J. Ocean. Limnol. 35, 844–857 (2017). https://doi.org/10.1007/s00343-017-6076-7
Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea[J]. 海洋湖沼学报（英文）, 2017,35(4):844-857. DOI： 10.1007/s00343-017-6076-7.

Lee, J.E., Chung, I.K. & Lee, SR. Dynamic genetic features of eukaryotic plankton diversity in the Nakdong River estuary of Korea., Chin. J. Ocean. Limnol. 35, 844–857 (2017). https://doi.org/10.1007/s00343-017-6076-7 DOI：

摘要

Abstract

Estuaries are environments where freshwater and seawater mix and they display various salinity profiles. The construction of river barrages and dams has rapidly changed these environments and has had a wide range of impacts on plankton communities. To understand the dynamics of such communities

researchers need accurate and rapid techniques for detecting plankton species. We evaluated the diversity of eukaryotic plankton over a salinity gradient by applying a metagenomics tool at the Nakdong River estuary in Korea. Environmental samples were collected on three dates during summer and autumn of 2011 at the Eulsukdo Bridge at the mouth of that river. Amplifying the 18S rDNA allowed us to analyze 456 clones and 122 phylotypes. Metagenomic sequences revealed various taxonomic groups and cryptic genetic variations at the intra- and inter-specific levels. By analyzing the same station at each sampling date

we observed that the phylotypes presented a salinity-related pattern of diversity in assemblages. The variety of species within freshwater samples reflected the rapid environmental changes caused by freshwater inputs. Dinophyceae phylotypes accounted for the highest proportion of overall diversity in the seawater samples. Euryhaline diatoms and dinoflagellates were observed in the freshwater

brackish and seawater samples. The biological data for species composition demonstrate the transitional state between freshwater and seawater. Therefore

this metagenomics information can serve as a biological indicator for tracking changes in aquatic environments.

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references

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