The Responses of phytoplankton and bacterial communities along the salinity gradients in the Seomjin River estuary

Title
The Responses of phytoplankton and bacterial communities along the salinity gradients in the Seomjin River estuary
Author(s)
이민지; 백승호; 문창호
KIOST Author(s)
Lee, Min Ji(이민지)Baek, Seung Ho(백승호)
Alternative Author(s)
이민지; 백승호
Publication Year
2017-04-19
Abstract
To assess changes in abiotic and biotic factors between flood and ebb tides we investigated the seasonal phytoplankton and bacterial dynamics and environmental conditions along a salinity gradient at 14 stations in the Seomjin River estuary(SRE), Korea. We performed bioassays to identify the effect of additional nutrients (+N, +P, and +NP) on phytoplankton growth and performed high-resolution 16S rRNA tag pyrosequencing to obtain snapshots of the bacterial diversity and community structure along the salinity gradients. Nitrate+nitrite and silicate loading increased as a result of freshwater input, and that phosphates loading may primarily have involved leaching from bottom sediments of the shallow inner bay.Inaddition, we suggested that sufficient N and Si are supplied by river discharges to favor suitable habitat conditions for diatoms, and are a main bottom-up factor affecting phytoplankton blooms during all seasons.(SRE), Korea. We performed bioassays to identify the effect of additional nutrients (+N, +P, and +NP) on phytoplankton growth and performed high-resolution 16S rRNA tag pyrosequencing to obtain snapshots of the bacterial diversity and community structure along the salinity gradients. Nitrate+nitrite and silicate loading increased as a result of freshwater input, and that phosphates loading may primarily have involved leaching from bottom sediments of the shallow inner bay.Inaddition, we suggested that sufficient N and Si are supplied by river discharges to favor suitable habitat conditions for diatoms, and are a main bottom-up factor affecting phytoplankton blooms during all seasons.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24134
Bibliographic Citation
한국해양과학기술협의회 공동학술대회, pp.71, 2017
Publisher
한국해양과학기술협의회
Type
Conference
Language
English
Publisher
한국해양과학기술협의회
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