Bacterioplankton diversity on effects of temperature and nutrients fluctuation in the Jangmok-Bay, South Korea

Title
Bacterioplankton diversity on effects of temperature and nutrients fluctuation in the Jangmok-Bay, South Korea
Author(s)
김현정; 정승원
KIOST Author(s)
Kim, Hyun Jung(김현정)Jung, Seung Won(정승원)
Publication Year
2016-05-19
Abstract
Bacterioplankton communities in a semi-closed bay (Jangmok Bay, South Korea)were analysed using a 16S rDNA multiplex 454 pyrosequencing approach. Diversity and operational taxonomic units of bacterioplankton communities in the Jangmok Bay are highest in coldwater seasons and lowest inwarmwater ones. During cold seasons, α-proteobacteria respond rapidly to pulses of the concentration of inorganic nutrients, while γ-proteobacteria during warm water seasons are the most active type of bacterioplankton resent in the prevailing conditions, which include high dissolved organic carbon, chemical oxygen demand and primary production. Cyanobacteria, a minor group constituting 4.58% of the total bacterioplankton, are more abundant at low temperature. Flavobacteria are more abundant in nutrient-rich conditions and the abundance of this group also demonstrated a delayed decline following summer phytoplankton blooms. The pronounced seasonal oscillations in phosphorus concentration and temperature exert strong selection pressure on bacterioplankton communities.re highest in coldwater seasons and lowest inwarmwater ones. During cold seasons, α-proteobacteria respond rapidly to pulses of the concentration of inorganic nutrients, while γ-proteobacteria during warm water seasons are the most active type of bacterioplankton resent in the prevailing conditions, which include high dissolved organic carbon, chemical oxygen demand and primary production. Cyanobacteria, a minor group constituting 4.58% of the total bacterioplankton, are more abundant at low temperature. Flavobacteria are more abundant in nutrient-rich conditions and the abundance of this group also demonstrated a delayed decline following summer phytoplankton blooms. The pronounced seasonal oscillations in phosphorus concentration and temperature exert strong selection pressure on bacterioplankton communities.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24787
Bibliographic Citation
한국해양학회 춘계학술대회, pp.123, 2016
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

Phytoplatnkon taxonomy,Phytoplatnkon physiology,Phycosphere,식물플랑크톤 분류,식물플랑크톤 생리,식물플랑크톤, 바이러스, 박테리아 관계

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