Enhanced production of oceanic dimethylsulfide resulting from CO2-induced grazing activity in a high CO2 world

Title
Enhanced production of oceanic dimethylsulfide resulting from CO2-induced grazing activity in a high CO2 world
Author(s)
김자명; 이기택; 양은진; 신경순; 노재훈; 박기태; 현봉길; 정해진; 김주형; 김광용; 김미옥; 김현철; 장풍국; 장민철
KIOST Author(s)
Shin, Kyoung Soon(신경순)Noh, Jae Hoon(노재훈)Hyun, Bong Gil(현봉길)Jang, Pung Guk(장풍국)
Publication Year
2010-06-03
Abstract
Oceanic dimethylsulfide (DMS) released to the atmosphere affects the Earth’sradiation budget through nucleation of cloud condensation and growth of nuclei over the oceans. However, it is as-yet-known about whether this negative climate feedback mechanism will intensify or weaken in oceans characterized by high CO2 levels and warm temperatures. To investigate the effects of two emerging environmental threats (ocean acidification and warming) on marine DMS production, we performed a perturbation experiment in a coastal environment. Two sets of CO2 and temperature conditions (a pCO2 of ~900 ppmv at ambient temperature conditions, and a pCO2 of ~900 ppmv at a temperature ~3°C warmer than ambient) significantly stimulated the grazing rate and the growth rate of heterotrophic dinoflagellates (ubiquitous marine microzooplankton). The increased grazing rate resulted in considerable DMS production. Our results indicate that increased grazing-induced DMS production should be expected in high CO2 oceans in the future.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/28924
Bibliographic Citation
2010년도 한국해양과학기술협의회 공동학술대회, pp.147, 2010
Publisher
한국해양과학기술협의회
Type
Conference
Language
English
Publisher
한국해양과학기술협의회
Related Researcher
Research Interests

Phytoplankton ecology,Primary productivity modelling,Coral reef ecosystem study,식물플랑크톤 생태학,일차생산력 모델,산호초 생태계 연구

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