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学科主题: Oceanography
题名: Variations in silicate concentration affecting photosynthetic carbon fixation by spring phytoplankton assemblages in surface water of the Strait of Malacca
作者: [Li Gang ; Lin Qiang ; Shen Pingping ; Song Xingyu ; Wang Shengfu ; Huang Liangmin ; Tan Yehui] Chinese Acad Sci, Key Lab Marine Bioresources Sustainable Utilizat, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China ; [Ni Guangyan] Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510160, Guangdong, Peoples R China
通讯作者: tanyh@scsio.ac.cn
关键词: photosynthetic carbon fixation ; phytoplankton ; the Strait of Malacca
刊名: ACTA OCEANOLOGICA SINICA
发表日期: 2013
卷: 32, 期:4, 页:77-81
部门归属: LMB
资助者: Foundation item: The National Natural Science Foundation of China under contract Nos 41130855, 41206132 and 41276162; the Natural Science Foundation of Guangdong under contract No. S2011040000151; CAS Knowledge Innovation Program under contract No. SQ201115; National Project of Sciences and Technology under contract No. 2008FY110100; CAS Strategic Pilot Science and Technology under contract No. X-DA05030403.
摘要: The Strait of Malacca (SoM), the world's busiest sea-route, is increasingly polluted as the rapid development of world trades, affecting phytoplankton primary productivity therein. The variations of surface phytoplankton biomass, size-structure and carbon fixation were investigated across the SoM during the spring period (May 4 to 9, 2011). Chlorophyll a concentration increased from 0.12 A mu g/L at the northwest entrance of the SoM to a maximal 0.63 A mu g/L at narrowest section, and decreased to 0.10 A mu g/L at the southeast entrance. Photosynthetic carbon fixation by phytoplankton coincided well with Chl a biomass, and increased from 10.8 to 22.3 A mu g C/(L center dot d), then decreased to 9.21 A mu g C/(L center dot d); while the carbon fixation rate showed an inverse pattern to the changes of Chl a, and decreased from 87.1 to 35.5 A mu gC/(A mu gChla center dot d) and increased thereafter to 95.3 A mu g C/(A mu g Chl a center dot d). Picophytoplankton cells (< 3 A mu m) contributed to more than 60% and 50% of the total Chl a and carbon fixation at both the entry waters; while the contributions of pico-cells decreased sharply to the minimum of 18.3% and 27.5% at the narrowest part of the SoM. In particular, our results showed that the silicate concentration positively regulated Chl a biomass and carbon fixation, reflecting that the higher silicate favoured the growth of phytoplankton and thus led to higher primary production in this strait.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000317297100010
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/11047
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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[Li Gang; Lin Qiang; Shen Pingping; Song Xingyu; Wang Shengfu; Huang Liangmin; Tan Yehui] Chinese Acad Sci, Key Lab Marine Bioresources Sustainable Utilizat, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Ni Guangyan] Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510160, Guangdong, Peoples R China.Variations in silicate concentration affecting photosynthetic carbon fixation by spring phytoplankton assemblages in surface water of the Strait of Malacca,ACTA OCEANOLOGICA SINICA,2013,32(4):77-81
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