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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-019-02049-7
|2 doi
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|a pubmed25n0991.xml
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|a (DE-627)NLM297421476
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|a (NLM)31123966
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Song, Xingyu
|e verfasserin
|4 aut
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|a Is phosphorus a limiting factor to regulate the growth of phytoplankton in Daya Bay, northern South China Sea
|b a mesocosm experiment
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 29.10.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a 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 (3 × 3 × 1.5 m, with ~10.8 m3 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 (FV/FM) and maximum relative electron transport rate (rETRmax), but declined the non-photochemical quenching (NPQ), as well as the threshold for light saturation of electron transport (EK); again, P-enrichment had no significant effect. Moreover, the absorption cross section for PSII photochemistry (σPSII) and electron transport efficiency (α) 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
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|a Journal Article
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|a Daya Bay
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|a Growth
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|a Mesocosm
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|a N- or/and P-enrichments
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|a Photosynthetic performance
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|a Phytoplankton assemblages
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|a Water Pollutants, Chemical
|2 NLM
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|a Phosphorus
|2 NLM
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|a 27YLU75U4W
|2 NLM
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|a Tan, Meiting
|e verfasserin
|4 aut
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|a Xu, Ge
|e verfasserin
|4 aut
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|a Su, Xinying
|e verfasserin
|4 aut
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|a Liu, Jihua
|e verfasserin
|4 aut
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|a Ni, Gaungyan
|e verfasserin
|4 aut
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|a Li, Yao
|e verfasserin
|4 aut
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|a Tan, Yehui
|e verfasserin
|4 aut
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|a Huang, Liangmin
|e verfasserin
|4 aut
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|a Shen, Pingping
|e verfasserin
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|a Li, Gang
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Ecotoxicology (London, England)
|d 1992
|g 28(2019), 5 vom: 23. Juli, Seite 559-568
|w (DE-627)NLM098212214
|x 1573-3017
|7 nnns
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| 773 |
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|g volume:28
|g year:2019
|g number:5
|g day:23
|g month:07
|g pages:559-568
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|u http://dx.doi.org/10.1007/s10646-019-02049-7
|3 Volltext
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