Is phosphorus a limiting factor to regulate the growth of phytoplankton in Daya Bay, northern South China Sea: a mesocosm experiment
文献类型：期刊论文
| 作者 | Liu, Jihua4; Su, Xinying1,5; Xu, Ge4; Tan, Meiting1,5; Song, Xingyu1; Shen, Pingping1; Huang, Liangmin1,5; Tan, Yehui1,5; Li, Yao1,5; Ni, Gaungyan3 |
| 刊名 | ECOTOXICOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 28期号:5页码:559 |
| 关键词 | Mesocosm N- or and P-enrichments Growth Photosynthetic performance Phytoplankton assemblages Daya Bay |
| ISSN号 | 0963-9292 |
| DOI | 10.1007/s10646-019-02049-7 |
| 英文摘要 | Previous field investigations implied a potential phosphorus (P)-limitation on the growth of phytoplankton in Daya Bay, a mesotrophic bay in the northern South China Sea. Using a total of 15 mesocosms (3x3x1.5m, with similar to 10.8m(3) natural seawater containing phytoplankton assemblages for each), we found P-enrichment caused no obvious effect on phytoplankton (Chl a) growth across 8-day's cultivation in neither winter nor summer, while nitrogen (N)-enrichment greatly increased Chl a in both seasons. N plus P-enrichment further increased Chl a content. The N- or N plus P-enrichments increased the allocation of nano-Chl a but decreased micro-Chl a in most cases, with no obvious effect by P-alone. Coincided with nutrients effect on Chl a content, N- or N plus P-enrichments significantly enhanced the maximum photochemical quantum yield of Photosystem II (F-V/F-M) and maximum relative electron transport rate (rETR(max)), but declined the non-photochemical quenching (NPQ), as well as the threshold for light saturation of electron transport (E-K); again, P-enrichment had no significant effect. Moreover, the absorption cross section for PSII photochemistry (sigma(PSII)) and electron transport efficiency () increased due to N- or N plus P-enrichments, indicating the increased nutrients enhance the light utilization efficiency through promoting PSII light harvesting ability, and thus to enhance phytoplankton growth. Our findings indicate that N- or N plus P-enrichments rigorously fuel phytoplankton blooms regardless of N:P ratios, making a note of caution on the expected P-deficiency or P-limitation on the basis of Redfield N:P ratios in Daya Bay. HighlightsMesocosm P-enrichment have no effect on photosynthetic performance and growth of phytoplankton assemblages in both winter and summer periods;Nitrogen (N) enrichment enhanced photosynthetic capacity of phytoplankton and fueled their blooms;Nitrogen (N) or N plus phosphorus (P) enrichments induced an increase of allocation of nanophytoplankton, but a decrease of microphytoplankton in most cases. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17821]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Trop Marine Bioresources & Ecol, South China Sea Inst Oceanol, 164,Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510160, Guangdong, Peoples R China 3.Shandong Univ, Inst Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Guangdong Prov Key Lab Appl Marine Biol, South China Sea Inst Oceanol, 164,Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jihua,Su, Xinying,Xu, Ge,et al. Is phosphorus a limiting factor to regulate the growth of phytoplankton in Daya Bay, northern South China Sea: a mesocosm experiment[J]. ECOTOXICOLOGY,2019,28(5):559, 568. |
| APA | Liu, Jihua.,Su, Xinying.,Xu, Ge.,Tan, Meiting.,Song, Xingyu.,...&Li, Gang.(2019).Is phosphorus a limiting factor to regulate the growth of phytoplankton in Daya Bay, northern South China Sea: a mesocosm experiment.ECOTOXICOLOGY,28(5),559. |
| MLA | Liu, Jihua,et al."Is phosphorus a limiting factor to regulate the growth of phytoplankton in Daya Bay, northern South China Sea: a mesocosm experiment".ECOTOXICOLOGY 28.5(2019):559. |
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来源：南海海洋研究所
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