SCSIO OpenIR  > 中科院海洋生物资源可持续利用重点实验室
Is phosphorus a limiting factor to regulate the growth of phytoplankton in Daya Bay, northern South China Sea: a mesocosm experiment
Song, Xingyu1; Tan, Meiting1,2; Xu, Ge3; Su, Xinying1,2; Liu, Jihua3; Ni, Gaungyan4; Li, Yao1,2; Tan, Yehui1,2; Huang, Liangmin1,2; Shen, Pingping1; Li, Gang1
2019
Source PublicationECOTOXICOLOGY
ISSN0963-9292
Volume28Issue:5Pages:559
AbstractPrevious 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.
DepartmentLMB
KeywordMesocosm N- or and P-enrichments Growth Photosynthetic performance Phytoplankton assemblages Daya Bay
DOI10.1007/s10646-019-02049-7
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17821
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.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, Guangdong Prov Key Lab Appl Marine Biol, South China Sea Inst Oceanol, 164,Xingangxi Rd, Guangzhou 510301, Guangdong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Shandong Univ, Inst Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China
5.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510160, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Song, Xingyu,Tan, Meiting,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 Song, Xingyu.,Tan, Meiting.,Xu, Ge.,Su, Xinying.,Liu, Jihua.,...&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 Song, Xingyu,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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.