Response of the bacterioplankton composition to inorganic nutrient loading and phytoplankton in southern Korean coastal waters: A mesocosm study SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Response of the bacterioplankton composition to inorganic nutrient loading and phytoplankton in southern Korean coastal waters: A mesocosm study
Author(s)
Park, Bum Soo; Lee, Minji; Shin, Kyoungsoon; Baek, Seung Ho
KIOST Author(s)
Park, Bum Soo(박범수)Lee, Minji(이민지)Shin, Kyoungsoon(신경순)Baek, Seung Ho(백승호)
Publication Year
2020-06
Abstract
In Korean coastal waters (KCW), nutrient loading from the four major rivers usually peaks in summer, probably due to the large amount of water discharge in rainy seasons, but little is known about the responses of the bacterial community composition to inorganic nutrient loading. To gain deeper understanding of variations in marine microbial biodiversity and function with inorganic nutrient loading, a large-scale mesocosm (1,000 L) experiment was conducted in southern KCW for 10 days in summer (July 27 through August 6, 2015) and the bacterioplankton community composition (BCC) was investigated using 16S rRNA amplicon pyrosequencing method. The bioassays established in the mesocosm were designed with the following each nutrient dosing treatments: nitrate (+N), phosphate (+P), and nitrate plus phosphate (+NP). Among the three treatments, the +NP and +N treatments exhibited the largest and second-largest increases in phytoplankton abundance, respectively, whereas there was relatively less variation under the +P treatment. Enhanced growth of phytoplankton not only induced increases in pH and bacterial abundance (p < .05) but also led to changes in the BCC: the orders Flavobacteria, Micrococcales, Oceanospirillales, and Rhodobacterales exhibited increases in relative abundance, whereas Methylophilales, Puniceicoccales, SAR11, SAR116, and SAR86 showed a decreasing trend. Inorganic nutrients may directly contribute to variation in the BCC, as the relative abundance of Sphingobacteriales, containing members that undergo chemotaxis toward inorganic nutrients, was increased by the +N treatment. Given that these findings, changes in phytoplankton abundance due to nutrient addition may be the most crucial component resulting in variation in the BCC.
ISSN
0173-9565
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38640
DOI
10.1111/maec.12591
Bibliographic Citation
MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE, v.41, no.3, pp.1 - 13, 2020
Publisher
WILEY
Subject
DISSOLVED ORGANIC-MATTER; COMMUNITY STRUCTURE; CARBON-DIOXIDE; BACTERIAL COMMUNITIES; MICROBIAL COMMUNITIES; GENETIC DIVERSITY; SEASONAL-CHANGES; NITROGEN INPUTS; LAKE WATER; DEEP-SEA
Keywords
bacterioplankton community composition; inorganic nutrients loading; mesocosm study; pyrosequencing
Type
Article
Language
English
Document Type
Article
Publisher
WILEY
Related Researcher
Research Interests

Molecular Ecology,Ecological Interaction between bacteria and phytoplankton,Harmful Algal Blooms (HABs),분자생태학,생태적 상호관계(박테리아-식물플랑크톤),유해조류대발생

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