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学科主题: Oceanography
题名: Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal
作者: Li, G ; Ke, ZX ; Lin, Q ; Ni, GY ; Shen, PP ; Liu, HX ; Yin, JQ ; Li, KZ ; Huang, LM ; Tan, YH
通讯作者: tanyh@scsio.ac.cn
关键词: longitudinal distributions ; phytoplankton ; size structure ; Bay of Bengal
刊名: ACTA OCEANOLOGICA SINICA
发表日期: 2012
卷: 31, 期:2, 页:121-128
部门归属: [Li Gang; Ke Zhixin; Lin Qiang; Shen Pingping; Liu Huaxue; Yin Jianqiang; Li Kaizhi; Huang Liangmin; Tan Yehui] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marine Bioresources Sustainable Utilizat, Guangzhou 510301, Guangdong, Peoples R China; [Ni Guangyan] Chinese Acad Sci, S China Bot Garden, Key Lab Vegetat Restorat & Management Degraded Ec, Guangzhou 510650, Guangdong, Peoples R China
项目归属: LMB
摘要: Vertical distributions of phytoplankton biomass, compositions and size structure were investigated during the spring-intermonsoon (April 22 to 30) of 2010 along transact 10 degrees N of the Bay of Bengal, northern Indian Ocean. Surface phytoplankton biomass (Chl a) was (0.065 +/- 0.009) mu g/L, being greater than 80% of which was contributed by pico-phytoplankton (<3 mu m). The Chl a concentration vertically increased to the maximal values at deep chlorophyll maximum (DCM) layer that shoaled eastwards from 75 to 40 m. The Chl a biomass at DCM layer generally varied between 0.2 and 0.4 mu g/L, reaching the maximum of 0.56 mu g/L with micro-phytoplankton cells (>20 mu m) accounting for 58% and nano- (3-20 mu m) or pico-cells for 15% and 27%, respectively. In particular, the cells concentration coupling well with phosphate level was observed at middle layer (75-100 m) of 87 degrees to 89 degrees E, dominated by micro-cells diatoms (e.g., Chaetoceros atlanticus v. neapolitana, Chaetoceros femur and Pseudonitzschia sp.) and cyanobacteria (i.e., Trichodesmium hildebrandtii), with the cells concentration reached as high as 4.0x10(4) and 4.3x10(4) cells/L. At the rest of the transact however, dinoflagellates (e.g., Amphisdinium carterae and Prorocentrum sp.) were the dominant species, with the cells concentration varying from 0.3x10(3) to 6.8x10(3) cells/L. Our results also indicate that the regulation of large cells (micro-, nano-) on phytoplankton biomass merely occurred at DCM layer of the Bay.
语种: 英语
WOS记录号: WOS:000302756000013
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/9960
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Recommended Citation:
Li, G; Ke, ZX; Lin, Q; Ni, GY; Shen, PP; Liu, HX; Yin, JQ; Li, KZ; Huang, LM; Tan, YH.Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal,ACTA OCEANOLOGICA SINICA,2012,31(2):121-128
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