Spatial and temporal variability and size fractionation of chlorophyll a in the tropical and subtropical Pacific Ocean

作     者：ZHANG Dongsheng WANG Chunsheng LIU Zhensheng XU Xuewei WANG Xiaogu ZHOU Yadong 

作者机构：Laboratory of Marine Ecosystem and BiogeochemistryState Oceanic AdministrationHangzhou 310012China 

出 版 物：《Acta Oceanologica Sinica》 (海洋学报（英文版）)

年 卷 期：2012年第31卷第3期

页      面：120-131页

核心收录：

学科分类：07[理学] 

基　　金：The Scientific Research Fund of the Second Institute of Oceanography,SOA under contract No. JG1024 the COMRA Special Foundation under contract Nos DY125-13-E-01 and DY125-14-E-02 

主　　题：chlorophyll a size fractionation Pacific Ocean 

摘      要：The spatial and temporal variability and size fractionation of chlorophyll a (Chl a) were investigated in the tropical and subtropical Pacific Ocean during four survey cruises from 2005 to *** surface Chl a (S-Chl a) concentration ranged from 0.002 to 0.497 mg/m3 and was obviously higher in the eastern Pacific than in the western and central *** vertical distribution of Chl a displayed a single peak pattern,and the maximum Chl a layer (MCL) was observed at a shallower depth in the eastern Pacific than in the western *** three size fractions of Chl a measurements in the surface water showed a similar distribution to total Chl a and were found in higher concentrations in the eastern Pacific than in the western and central *** dominated the phytoplankton in the surveyed tropical and subtropical Pacific ***,pico-Chl a (0.2-2 μm) accounted for a larger percentage of the total Chl a in the central Pacific than it did in the western Pacific and eastern *** the western Pacific,there seemed to be a latitudinal variability in the phytoplankton community composition where small-sized phytoplankton (2 μm) were more dominant in the tropical than in the subtropical western *** spatial and temporal variability and size fractionation of Chl a were controlled by hydrological and chemical characteristics and climate events,such as El Ni(n)o and La Ni(n)a.