Recent Primary Production and Small Phytoplankton Contribution in the Yellow Sea during the Summer in 2016 SCIE SCOPUS KCI

Cited 9 time in WEB OF SCIENCE Cited 9 time in Scopus
Title
Recent Primary Production and Small Phytoplankton Contribution in the Yellow Sea during the Summer in 2016
Author(s)
Jang, Hyo Keun; Kang, Jae Jung; Lee, Jae Hyung; Kim, Myungjoon; Ahn, So Hyun; Jeong, Jin-Yong; Yun, Mi Sun; Han, In-Seong; Lee, Sang Heon
KIOST Author(s)
Jeong, Jin Yong(정진용)
Alternative Author(s)
정진용
Publication Year
2018-09
Abstract
The high nutrient concentration associated with the mixing dynamics of two warm and cold water masses supports high primary production in the Yellow Sea. Although various environmental changes have been reported, no recent information on small phytoplankton contribution to the total primary production as an important indicator for marine ecosystem changes is currently available in the Yellow Sea. The major objective of this study is to determine the small (< 2 mu m) phytoplankton contribution to the total primary production in the Yellow Sea during August, 2016. In this study, we found relatively lower chlorophyll a concentrations in the water column than those previously reported in the central waters of the Yellow Sea. Moreover, the overall contribution of small phytoplankton (53.1%) to the total chlorophyll a concentration was considerably higher in this study than that (10.7%) observed previously. Based on the N/P ratio (67.6 +/- 36.6) observed in this study, which is significantly higher than the Redfield ratio (16), we believe that phytoplankton experienced P-limiting conditions during the study period. The average daily carbon uptake rate of total phytoplankton in this study was 291.1 mg C m(-2) d(-1) (+/- 165.0 mg C m(-2) d(-1)) and the rate of small phytoplankton was 205.7 mg C m(-2) d(-1) (+/- 116.0 mg C m(-2) d(-1)) which is 71.9% (+/- 8.8%) of the total daily carbon uptake rate. This contribution of small phytoplankton observed in this study appears to be higher than that reported previously. Our recent measured primary production is approximately 50% lower than the previous values decades ago. The higher contributions of small phytoplankton to the total chlorophyll a concentration and primary production might be caused by P-limited conditions and this resulted in lower chlorophyll a concentration and total primary production in this study compared to previous studies.
ISSN
1738-5261
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/832
DOI
10.1007/s12601-018-0017-z
Bibliographic Citation
OCEAN SCIENCE JOURNAL, v.53, no.3, pp.509 - 519, 2018
Publisher
한국해양과학기술원
Keywords
primary production; Yellow Sea; small phytoplankton; chlorophyll a
Type
Article
Language
English
Document Type
Article
Publisher
한국해양과학기술원
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