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Surface Ocean and Lower Atmosphere Study—Air-Sea interactions and their climatic and environmental impacts
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Modelling the effect of atmospheric deposition on phytoplankton growth during the on-board incubation experiments conducted in South China Sea
Wednesday 9th @ 1430-1450, Conference Room 7
Qiang Chu, 1Key Laboratory of Marine Environment and Ecology, Ministry of Education; Ocean University of China, Qingdao, China
Huiwang Gao* , 1Key Laboratory of Marine Environment and Ecology, Ministry of Education; Ocean University of China, Qingdao, China
2Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
Presenter Email: hwgao@ouc.edu.cn |
| In situ incubation experiment is a popular method in the study of impact of atmospheric deposition on marine ecosystem. However, it cannot be easily used to reveal the processes in the experiment. In this study a nutrient-phytoplankton-detritus biogeochemical box model (NPD model) was applied to to simulate the nutrient and phytoplankton dynamics during the onboard incubation experiments conducted in South China Sea. The NPD model is able to reproduce the chlorophyll and nutrient variation for most of the incubation experiments. The insufficient reduction in dissolved inorganic phosphorus (DIP) along with increasing of Chl a suggested a possible utilization of organic phosphorus (DOP) in this oligotrophic low-productivity sea area. For this purpose, we propose a DOP utilization scheme for the NPD model, which significantly improves the simulation ability of the model. This study provides a reference for the parameterization of organic nutrient utilization in the future ecological modelling research. |
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