Effects of different phosphorus concentrations and N/P ratios on the growth and photosynthetic characteristics of Skeletonema costatum and Prorocentrum donghaiense

IOCAS-IR

	Effects of different phosphorus concentrations and N/P ratios on the growth and photosynthetic characteristics of Skeletonema costatum and Prorocentrum donghaiense
	Li JL(李俊磊); Sun XX(孙晓霞)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2016-11-15
出版年	2016
卷号	v.34 期号:06 页码:18-32
文献类型	CNKI期刊论文
摘要	The effects of different phosphorus(P) concentrations(0.36, 3.6, and 36 μmol/L corresponding to low-, middle-, and high-P concentration groups, respectively) and nitrogen(N)/P ratios on the growth and photosynthetic characteristics of S keletonema costatum and Prorocentrum donghaiense were studied. For both species, the high-P(HP) concentration group showed the greatest algal density and highest specifi c growth rate. Changes in the maximum effi ciency of photosystem Ⅱ(F _v/F_m) were monitored under the various P and N/P conditions. The largest decrease in F _v/F_m was in the low-P(LP) group in S. costatum and in the HP group in P. donghaiense. There were high rapid light curves and photochemical quantum yields(Φ _(PSⅡ)) for S. costatum in the HP group, while the actual photosynthetic capacity was higher in P. donghaiense than in S. costatum in the MP group. Under eutrophic but relatively P-restricted conditions, P. donghaiense had higher photosynthetic activity and potential, which could cause this dinofl agellate to increasingly dominate the phytoplankton community in these conditions. Under the same P concentration and N/P ratio, P. donghaiense had a larger relative maximum rate of electron transport and higher Φ _(PSⅡ) values than those of S. costatum. These differences between P. donghaiense and S. costatum may explain the interaction and succession patterns of these two species in the Changjiang(Yangtze) River estuary from a photosynthesis perspective.
关键词	Skeletonema costatum Prorocentrum donghaiense nutrients algae growth photosynthetic characteristics
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A006;
CNKI专题名称	生物学;
分类号	Q945
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the“Strategic Priority Research Program—Climate Change:Carbon Budget and Relevant Issues”of Chinese Academy of Sciences(No.XDA05030401) ; the National Basic Research Program of China(973 Program)(No.2014CB441504) ; the Key Program of National Natural Science Foundation of China(No.41230963) ; the NSFCShandong Province Joint Fund Project(No.U1406403)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189480
专题	中国科学院海洋研究所
作者单位	1.JiaozhouBayMarineEcosystemResearchStation,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.LaboratoryofMarineEcologyandEnvironmentalScience,QingdaoNationalLaboratoryforMarineScienceandTechnology
推荐引用方式 GB/T 7714	Li JL,Sun XX. Effects of different phosphorus concentrations and N/P ratios on the growth and photosynthetic characteristics of Skeletonema costatum and Prorocentrum donghaiense. 2016.