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大亚湾冬季不同粒级浮游生物的氮稳定同位素特征及其与生物量的关系
The stable nitrogen isotope of size-fractioned plankton and its relationship with biomass during winter in Daya Bay

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柯志新 1   黄良民 1 *   徐军 2   马艳娥 1  
文摘 生物量在营养级上的分布作为一种生态系统的指示指标,可以指示因人类干扰和环境变化导致的生态系统的改变,揭示生态系统功能的差异性。调查了冬季大亚湾不同区域各粒级浮游生物的生物量大小及其氮稳定同位素丰度比值(δ~(15)N)与环境因子的关系,通过构建营养级谱比较了大亚湾不同区域浮游食物网结构的差异。研究结果显示,浮游生物的δ~(15)N值基本随着粒径的增大而增加,但100—212μm粒级的δ~(15)N值为5.08‰,略低于1.2—100μm粒级的5.58‰。>500μm粒级的δ~(15)N值最大,平均为8.16‰。在湾口和敞水带的S1、S9站各粒级的δ~(15)N都要小于其他站位,而各粒级δ~(15)N的最大值一般都出现在湾底的S8站。在各粒级颗粒物中,1.2—100μm粒级的δ~(15)N最适合用来指示水体的环境状况,受陆源输入影响较小的海域的δ~(15)N值小。生物量与氮稳定同位素构建的营养级谱的斜率与总溶解氮的浓度和氮磷比呈显著负相关关系。处于湾口的站位的营养级谱的谱线要更陡峭一些,表明该处捕食者/被捕食者的比率更低。
其他语种文摘 The relationship between abundance and trophic level is an ecosystem-level indicator of anthropogenic influences and environmental changes,and can reveal the differences in ecosystem structure and function.The present study investigated the relationship between the biomass and δ~(15)N value of size-fractioned particulate organic matters,and compared the structure of pelagic food web of Daya Bay using the method of trophic spectrum.Sample sites were selected: S1 in the mouth of Daya Bay,S3 in the aquaculture area,S5 in the effluent area of Nuclear Power Plant,S8 in the inner area of Daya Bay,S9 in the pelagic area,and S11 in the mouth of Fanhe Cove.Plankton samples were separated into four size fractions: 1.2—100 μm,100—212 μm,212—500 μm,and > 500 μm.The average biomass of four size fractions were 12.04 mg dry wt /L,2.92 mg dry wt /L,0.032 mg dry wt /L,and 0.015 mg dry wt /L in the six sample sites respectively.The average δ~(15)N values of four size fractions were 5.58‰,5.08‰,7.36‰,and 8.16‰ respectively.The results showed that the δ~(15)N values of size-fractioned plankton generally increased with the size class except the 100—212 μm fraction.The average δ~(15)N value of 100—212 μm fraction was lower than the 1.2—100 μm fraction,which may be attributed to the more micro-zooplankton and detritus in the 1.2—100 μm fraction.The δ~(15)N of each size fractions was low in the mouth of Daya Bay (S1) and pelagic area (S9).The tendency of δ~(15)N was S1 < S9 < S11 < S3 < S5 < S8 in the fractions of 1.2—100 μm and > 500 μm.In the fraction of 100—212 μm,the tendency of δ~(15)N changed to S5 < S1 < S9 < S11 < S3 < S8.In the inner zone of Daya Bay (S8),δ~(15)N values were higher in each fractions than those of other sites. Previous studies suggested that anthropogenic nutrient inputs can increase the δ~(15)N value of particulate organic matters and their δ~(15)N value can well indicate the anthropogenic euthrophication in aquatic ecosystems. Our results showed that the δ~(15)N value of 1.2—100 μm fraction was most suitable to indicate the variation of environmental condition among the size fractions,which was significantly correlated with Chl a,SiO3,NO3,DIN and DIN/DIP.We constructed the trophic spectrum according to the biomass and δ~(15)N value of size-fractioned plankton in the six sites.The average slope of trophic spectrum was -0.95.The slope of trophic spectrum was steepest in S1 with a value of -1.3 and was gentlest in S5 with a value of -0.7.The slope value of trophic spectrum were S1 < S3 < S9 < S11 < S8 < S5.There were significantly negative correlation between the slops of trophic spectrum and DIN and DIN/DIP.The concentration of DIN and Chl a were highest in the steepest S1.It suggested that the high nutrient concentration and primary production favor to a steeper trophic spectrum and a lower predator /prey ratio in the pelagic food web in winter of Daya Bay.
来源 生态学报 ,2012,32(22):7102-7108 【核心库】
DOI 10.5846/stxb201110091477
关键词 氮稳定同位素 ; 浮游生物 ; 浮游食物网 ; 营养级谱 ; 大亚湾
地址

1. 中国科学院南海海洋研究所, 中国科学院海洋生物资源可持续利用重点实验室, 广州, 510301  

2. 中国科学院水生生物研究所, 武汉, 430072

语种 中文
ISSN 1000-0933
学科 普通生物学
基金 国家自然科学基金 ;  中国科学院青藏高原研究所知识创新工程青年人才领域前沿项目 ;  广东省科技计划项目 ;  中国科学院海洋生物资源可持续利用重点实验室开放基金
文献收藏号 CSCD:4676950

参考文献 共 25 共2页

1.  Peterson B J. Stable isotopes in ecosystem studies. Annual Reviews of Ecological Systematics,1987,18:293-320 被引 148 次    
2.  Corbisier T N. Use of isotopic signatures to assess the food web in a tropical shallow marine ecosystem of Southeastern Brazil. Aquatic Ecology,2006,40:381-390 被引 1 次    
3.  Vizzini S. The effects of anthropogenic organic matter inputs on stable carbon and nitrogen isotopes in organisms from different trophic levels in a southern Mediterranean coastal area. Science of the Total Environment,2006,368:723-731 被引 7 次    
4.  Carlier A. Food web structure of two Mediterranean lagoons under varying degree of eutrophication. Journal of Sea Research,2008,60:264-275 被引 7 次    
5.  Gorokhova E. Stable isotopes show food web changes after invasion by the predatory cladoceran Cercopagis pengoi in a Baltic Sea bay. Oecologia,2005,143:251-259 被引 1 次    
6.  Brusati E D. Effect of native and invasive cordgrass on Macoma petalum density, growth, and isotopic signatures. Estuarine, Coastal and Shelf Science,2007,71:517-522 被引 4 次    
7.  Brown J H. Ecological food webs: High-quality data facilitate theoretical unification. Proceedings of the National Academy of Sciences,2003,100(4):1467-1468 被引 7 次    
8.  Rau G H. 13C/12C and 15N/14N variations among size-fractionated marine particles: implications for their origin and trophic relationships. Marine Ecology Progress Series,1990,59:33-38 被引 15 次    
9.  Rolff C. Seasonal variation in C and N of size-fractionated plankton at a coastal station in the northern Baltic proper. Marine Ecology Progress Series,2000,203:47-65 被引 9 次    
10.  Norkko A. Trophic structure of coastal Antarctic food webs associated with changes in sea ice and food supply. Ecology,2007,88(11):2810-2820 被引 6 次    
11.  Loick N. Pelagic nitrogen dynamics in the Vietnamese upwelling area according to stable nitrogen and carbon isotope data. Deep-sea Research Ⅰ,2007,54:596-607 被引 8 次    
12.  Jennings S. Use of size-based production and stable isotope analyses to predict trophic transfer efficiencies and predatorprey body mass ratios in food webs. Marine Ecology Progress Series,2002,240:11-20 被引 6 次    
13.  周林滨. 水生生物粒径谱/生物量谱研究进展. 生态学报,2010,30(12):3319-3333 被引 25 次    
14.  Gascuel D. The trophic spectrum: theory and application as an ecosystem indicator. ICES Journal of Marine Science,2005,62:443-452 被引 2 次    
15.  蔡德陵. 渤海生态系统的营养关系:碳同位素研究的初步结果. 生态学报,21(8):1354-1359 被引 1 次    
16.  左涛. 秋季南黄海网采浮游生物的生物量谱. 海洋学报,2008,30(5):71-80 被引 8 次    
17.  左涛. 春季长江口邻近外海网采浮游生物的生物量谱. 生态学报,2008,28(3):1174-1182 被引 13 次    
18.  王友绍. 近20年来大亚湾生态环境的变化及其发展趋势. 热带海洋学报,2004,23(5):85-95 被引 79 次    
19.  Wu M L. Using chemometrics to evaluate anthropogenic effects in Daya Bay, China. Estuarine, Costal and Shelf Science,2007,72:732-742 被引 26 次    
20.  Cole M L. Assessment of a δ15N isotopic method to indicate anthropogenic eutrophication in aquatic ecosystems. Journal of Environmental Quality,2004,33:124-132 被引 19 次    
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