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| Seasonal and spatial comparisons of phytoplankton growth and mortality rates due to microzooplankton grazing in the northern South China Sea | |
Chen, B.1,2; Zheng, L.3; Huang, B.1,2; Song, S.4; Liu, H.3 ; Liu, H
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| 2013 | |
| 发表期刊 | BIOGEOSCIENCES
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| ISSN | 1726-4170 |
| 卷号 | 10期号:4页码:2775-2785 |
| 文章类型 | Article |
| 摘要 | We conducted a comprehensive investigation on the microzooplankton herbivory effect on phytoplankton in the northern South China Sea (SCS) using the seawater dilution technique at surface and deep chlorophyll maximum (DCM) layers on two cruises (July-August of 2009 and January of 2010). We compared vertical (surface vs. DCM), spatial (onshore vs. offshore), and seasonal (summer vs. winter) differences of phytoplankton growth (mu(0)) and microzooplankton grazing rates (m). During summer, both mu(0) and m were significantly higher at the surface than at the DCM layer, which was below the mixed layer. During winter, surface mu(0) was significantly higher than at the DCM, while m was not significantly different between the two layers, both of which were within the mixed layer. Surface mu(0) was, on average, significantly higher in summer than in winter, while average surface m was not different between the two seasons. There were no cross-shelf gradients of mu(0) in summer or winter surface waters. In surface waters, mu(0) was not correlated with ambient nitrate concentrations, and the effect of nutrient enrichment on phytoplankton growth was not pronounced. There was a decreasing trend of m from shelf to basin surface waters in summer, but not in winter. Microzooplankton grazing effect on phytoplankton (m/mu(0)) was relatively small in the summer basin waters, indicating a decoupling of microzooplankton grazing and phytoplankton growth at this time. On average, microzooplankton grazed 73% and 65% of the daily primary production in summer and winter, respectively.; We conducted a comprehensive investigation on the microzooplankton herbivory effect on phytoplankton in the northern South China Sea (SCS) using the seawater dilution technique at surface and deep chlorophyll maximum (DCM) layers on two cruises (July-August of 2009 and January of 2010). We compared vertical (surface vs. DCM), spatial (onshore vs. offshore), and seasonal (summer vs. winter) differences of phytoplankton growth (mu(0)) and microzooplankton grazing rates (m). During summer, both mu(0) and m were significantly higher at the surface than at the DCM layer, which was below the mixed layer. During winter, surface mu(0) was significantly higher than at the DCM, while m was not significantly different between the two layers, both of which were within the mixed layer. Surface mu(0) was, on average, significantly higher in summer than in winter, while average surface m was not different between the two seasons. There were no cross-shelf gradients of mu(0) in summer or winter surface waters. In surface waters, mu(0) was not correlated with ambient nitrate concentrations, and the effect of nutrient enrichment on phytoplankton growth was not pronounced. There was a decreasing trend of m from shelf to basin surface waters in summer, but not in winter. Microzooplankton grazing effect on phytoplankton (m/mu(0)) was relatively small in the summer basin waters, indicating a decoupling of microzooplankton grazing and phytoplankton growth at this time. On average, microzooplankton grazed 73% and 65% of the daily primary production in summer and winter, respectively. |
| 学科领域 | Environmental Sciences & Ecology ; Geology |
| DOI | 10.5194/bg-10-2775-2013 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology |
| WOS类目 | Ecology ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000318434200043 |
| WOS关键词 | EASTERN EQUATORIAL PACIFIC ; FLOW-CYTOMETRIC ANALYSES ; ARABIAN SEA ; COASTAL WATERS ; CHLOROPHYLL ; OCEAN ; NUTRIENT ; MONSOON ; CARBON ; SIZE |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16492 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 通讯作者 | Liu, H |
| 作者单位 | 1.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 2.Xiamen Univ, Minist Educ Coastal & Wetland Ecosyst, Key Lab, Xiamen, Fujian, Peoples R China 3.Hong Kong Univ Sci & Technol, Div Life Sci, Kowloon, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, B.,Zheng, L.,Huang, B.,et al. Seasonal and spatial comparisons of phytoplankton growth and mortality rates due to microzooplankton grazing in the northern South China Sea[J]. BIOGEOSCIENCES,2013,10(4):2775-2785. |
| APA | Chen, B.,Zheng, L.,Huang, B.,Song, S.,Liu, H.,&Liu, H.(2013).Seasonal and spatial comparisons of phytoplankton growth and mortality rates due to microzooplankton grazing in the northern South China Sea.BIOGEOSCIENCES,10(4),2775-2785. |
| MLA | Chen, B.,et al."Seasonal and spatial comparisons of phytoplankton growth and mortality rates due to microzooplankton grazing in the northern South China Sea".BIOGEOSCIENCES 10.4(2013):2775-2785. |
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