Dr. Haiyan Jin - Long time changes of nutrients and it’s ecological effects in the East China Sea under the stress of anthropogenic activities

Event type: 
Seminar
Date: 
25 July 2018
Time: 
12.00 pm - 1.00 pm
Location: 

Climate Change Research Centre, Seminar Room, Mathews Building 4th floor, UNSW, Sydney

Presenter: 
Dr. Haiyan Jin
Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, China.
Host: 
Climate Change Research Centre, UNSW

In the East China Sea, Changjiang Diluted Water (CDW) influenced area was characterized as eutrophic area with high anthropogenic nutrients inputs. Nitrate concentration increased 6times during the last 50 years from ~30 umol/L to ~150 umol/L. While the increase of silicate and phosphate are not so obviously. Nutrients levels and ratios effects the phytoplankton growth and the structure of phytoplankton communities. Moreover, high biomass of diatom in the upper layer coupled with the hypoxia in the bottom water. Time series observation was also set up to get the information of the effects of typhoon events on the marine ecosystem response in the East China Sea.

 

Brief biography: Dr. Haiyan Jin is currently working in the Key Laboratory of Marine Ecosystem and Biogeochemistry, Second institute of Oceanography, State Oceanic Administration, China. She engaged in the research of marine biogeochemistry. Her study mainly focus on the coastal eutrophication and its effects onphytoplankton communities and biogeochemical cycles under the stress of anthropogenic activities and climate change. She also conducted the research of response of marine ecosystem to the ice retreat under the rapid change in the Arctic Ocean.