| |
| |
|
|
|
|
| |
 |
Circulation, biogeochemistry and carbon cycling in ocean margins
|
| |
|
|
Spatial variability in nutrients and phytoplankton biomass in eastern Indian Ocean during spring inter-monsoon
P-M1-04-S
Kanchana Priyadarshani* , State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China.
Faculty of Fisheries and Marine Sciences and Technology, University of Ruhuna, Matara, Sri Lanka.
Jie Xu, State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China
Gayan Pathirana, State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China.
Faculty of Fisheries and Marine Sciences and Technology, University of Ruhuna, Matara, Sri Lanka.
Jianzu Liao, State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China
Ruihuan Li, State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China
W.N.D.S. Jayarathna, State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China.
Faculty of Fisheries and Marine Sciences and Technology, University of Ruhuna, Matara, Sri Lanka.
Dongxiao Wang, State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Guangzhou, China
Presenter Email: hpkdarshi@gmail.com |
A field survey along the 85E transect (from 6N to 10N) in the eastern Indian Ocean was conducted during spring inter-monsoon (25 April - 28 April, 2018) in order to examine spatial variability in the concentrations of nutrients and phytoplankton biomass and their regulators. Our results showed that the nutricline deepened and the Chlorophyll a (Chl a) concentrations at the deep chlorophyll maximum (DCM) decreased northwards, accompanied by shoaling of the mixed-layer depth, along the 85E transect. Dynamics of nutrients and Chl a concentrations was closely related to physical processes. The shoaling of the mixed-layer depth weakened replenishment of deep nutrients to the upper layers, which was responsible for a decrease in Chl a levels at DCM from the south to north along the 85E transect. |
|
|
|
|
|
|
|
|