Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal
Li, G; Ke, ZX; Lin, Q; Ni, GY; Shen, PP; Liu, HX; Yin, JQ; Li, KZ; Huang, LM; Tan, YH; tanyh@scsio.ac.cn
2012
发表期刊ACTA OCEANOLOGICA SINICA
ISSN0253-505X
卷号31期号:2页码:121-128
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.
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
关键词Longitudinal Distributions Phytoplankton Size Structure Bay Of Bengal
学科领域Oceanography
语种英语
资助项目LMB
WOS记录号WOS:000302756000013
引用统计
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/9960
专题中科院海洋生物资源可持续利用重点实验室
通讯作者tanyh@scsio.ac.cn
推荐引用方式
GB/T 7714
Li, G,Ke, ZX,Lin, Q,et al. Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal[J]. ACTA OCEANOLOGICA SINICA,2012,31(2):121-128.
APA Li, G.,Ke, ZX.,Lin, Q.,Ni, GY.,Shen, PP.,...&tanyh@scsio.ac.cn.(2012).Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal.ACTA OCEANOLOGICA SINICA,31(2),121-128.
MLA Li, G,et al."Longitudinal patterns of spring-intermonsoon phytoplankton biomass, species compositions and size structure in the Bay of Bengal".ACTA OCEANOLOGICA SINICA 31.2(2012):121-128.
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