网湖浮游植物粒级结构对丰水枯水环境响应研究
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摘要
采用高效液相色谱技术与化学分类法,结合冗余分析对网湖丰水和枯水期各粒级浮游植物群落结构特征及时空分布进行了研究。结果显示:丰水期各粒级浮游植物的总生物量较枯水期高。网湖各粒级浮游植物的主要光合色素除Nexo外,丰水期各色素含量均高于枯水期。丰水期各粒级浮游植物中,网湖优势种群均为裸藻门;枯水期各粒级浮游植物优势种群为硅藻门。小型浮游植物中优势类群依次为硅藻门与裸藻门,微型与超微型浮游植物优势类群为硅藻门和蓝藻门,其次为裸藻门。各粒级浮游植物表现为裸藻门和硅藻门之间相互演替的特征。通过RDA分析发现,丰水期关键环境因子为氨氮,枯水期为总磷和氨氮。
High performance liquid chromatography and chemical classification were used in combination with redundancy analysis to study the phytoplankton community structure and phytoplankton biomass size structurecharacteristics and spatial and temporal distribution at the high and low water stage. The results showed that the total biomass of size-fractionated phytoplankton of wet period was higher than that of the dry period. The main photosynthetic pigments of size-fractionated phytoplankton of net lake were higher in wet period than that in the dry period except Nexo. The net lake dominant species of size-fractionated phytoplankton in the period of abundant water was euglenophyta. The dominant phytoplankton species in the dry period were diatoms. The dominant groups of nano-phytoplankton are diatomophyta and euglenophyta,the dominant groups of micro and picophytoplankton are diatoma and cyanophyta,followed by euglenophyta. The size-fractionated phytoplankton showedthat the characteristic of mutual succession between euglenophyta and diatoma. RDA analysissuggested that the key environmental factor was ammonia nitrogen,and the total phosphorus and ammonia nitrogen werekey environmental factors during dry season.
High performance liquid chromatography and chemical classification were used in combination with redundancy analysis to study the phytoplankton community structure and phytoplankton biomass size structurecharacteristics and spatial and temporal distribution at the high and low water stage. The results showed that the total biomass of size-fractionated phytoplankton of wet period was higher than that of the dry period. The main photosynthetic pigments of size-fractionated phytoplankton of net lake were higher in wet period than that in the dry period except Nexo. The net lake dominant species of size-fractionated phytoplankton in the period of abundant water was euglenophyta. The dominant phytoplankton species in the dry period were diatoms. The dominant groups of nano-phytoplankton are diatomophyta and euglenophyta,the dominant groups of micro and picophytoplankton are diatoma and cyanophyta,followed by euglenophyta. The size-fractionated phytoplankton showedthat the characteristic of mutual succession between euglenophyta and diatoma. RDA analysissuggested that the key environmental factor was ammonia nitrogen,and the total phosphorus and ammonia nitrogen werekey environmental factors during dry season.
引文
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[3]宁修仁.海洋微型和微微型浮游生物[J].东海海洋,1997,15(3):60~64.
[4]刘子琳,宁修仁.北部湾浮游植物粒径分级叶绿素a和初级生产力的分布特征[J].海洋学报,1998,20(1):50~57.
[5]Font-Munoz J S,Jordi A,Angles S,et al. Estimation of phytoplankton size structure in coastal waters using simultaneous laser diffraction and fluorescence measurements[J]. Journal of Plankton Research,2015,(4):1~12.
[6]李家园.基于HPLC光合色素分析技术对三峡水库超微型浮游植物生物多样性的研究[D].黄石:湖北师范大学,2014,(3):9~14.
[7]Alvarez-Fernandez S,Riegman R. Chlorphyll in North Sea coastal and offshore waters does not reflect long term trends of phytoplankton biomass[J]. Sea Res,2014,91(8):35~44.
[8]国家环境保护总局,《水和废水检测分析方法》编委会.水和废水检测分析方法[M].北京:北京中国环境科学出版社,2002.
[9]曾明正.北方温带季节性分层水库水质及浮游植物功能类群时空演替规律研究[D].西安:西安建筑科技大学,2016.
[10]肖利娟.海南省7座大中型水库浮游植物群落特征和富营养化分析[D].广州:暨南大学,2008.
[11]王明学,于建胜,龚世园等.网湖春季水质及底质状况的研究[J].淡水渔业,1997,(04):7~10.
[12]Htzel G,Croome R. Population dynamics of Aulacoseiragranulata(HER.)SIMONSON(Bacillariophyceae,Centrales),the dominant alga in the Murray River,Australia[J]. Archiv für Hydrobiologie,1996,136(2):191~215.
[13]薛迪.南四湖浮游植物群落结构时空变化特征[D].山东大学,2016,(2):44~47.
[14]吴文广,张继红,刘毅,等.獐子岛及邻近海域秋季浮游植物的粒级结构及其影响因素[J].生态学报,2018,38(4):1418~1426.
[15]Nogueira M G. Phytoplankton composition,dominance andabundance as indicators of environmental compartmentalization in Jurumirim Reservoir(Paranapanema River),So Paulo,Brazil[J]. Hydrobiologia,2000,431:115~12.
[16]郭蔚华,李楠,张智,等.嘉陵江出口段三类水体蓝绿硅藻优势种变化机理[J].生态环境学报,2009,18(1):51~56.
[17]洪华生,阮五崎,黄邦钦,等.台湾海峡初级生产力及其调控机制.中国海洋学文集[C].北京:海洋出版社,1997:12~15.
[18]邓春梅,姚鹏,刘淑霞,等.海洋浮游藻色素分析和化学分类研究进展[J].中国海洋大学学报(自然科学版),2010,40(4):91~98.