Increased growth rates of marine phytoplankton S. costatum in controlled mesocosm experiments in response to increased atmospheric CO2

Title
Increased growth rates of marine phytoplankton S. costatum in controlled mesocosm experiments in response to increased atmospheric CO2
Author(s)
김자명; 이기택; 신경순; 강정훈; 이현우; 김미옥; 박병권
KIOST Author(s)
Shin, Kyoung Soon(신경순)Kang, Jung Hoon(강정훈)
Publication Year
2005-05-13
Abstract
Rising carbon dioxide (CO2) concentrations in the atmosphere over the past two centuries have resulted in greater CO2 uptakes by the oceans. Such natural acidification process has profoundly changed the upper ocean carbonate chemistry, including the decrease in carbonate ion concentration and the increase in gaseous CO2 concentration. Several lines of evidence suggest that the accumulated oceanic burden of fossil fuel CO2 reduces CaCO3 production ofmarine organisms. However, experiments addressing the effect of rising oceanic CO2 to primary production are shortfall. Here we present results from a carefully-controlled mesocosm experiment, in which the same mixed phytoplankton assemblage in each set of triplicate enclosures was exposed to three different levels of CO2 concentrations (280, 380, and 700 ppm). In the final phase of the controlled experiment, a deliberate addition of nitrate and phosphate into all nine enclosures quickly stimulated primary production and underwent the exponential growth phase. Measured growth rates of several dominant species showed that only S. Costatum in the phytoplankton assemblage sensitively responded to changes in seawater CO2 concentrations. In the exponential growth phase of this experiment, the average growth rates of S. Costatum in 700 ppm-pCO2 treatments were approximately 30% higher than those in 280 ppm- or 380 ppm-pCO2 treatments.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31457
Bibliographic Citation
2005년도 한국해양과학기술협의회 공동학술대회, pp.312, 2005
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Related Researcher
Research Interests

Biological oceanography,Zooplankton ecology,Introduction and dispersion of foreign species,생물해양학,동물플랑크톤 생리,생태,외래종 유입,확산

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse