生态与农村环境学报 ›› 2019, Vol. 35 ›› Issue (3): 345-351.doi: 10.19741/j.issn.1673-4831.2018.0355

• 自然保护与生态 • 上一篇    下一篇

上海某河口型景观湖冬季附着藻类的建群过程初探

陈姗1,2,3, 柳昭莹1,2,3, 张玮1,2,3, 袁明哲1,2,3, 王丽卿1,2,3   

  1. 1. 上海海洋大学农业部鱼类营养与环境生态研究中心, 上海 201306;
    2. 上海海洋大学水产种质资源发掘与利用教育部重点实验室, 上海 201306;
    3. 上海海洋大学水产科学国家级实验教学示范中心, 上海 201306
  • 收稿日期:2018-06-25 出版日期:2019-03-25 发布日期:2019-04-25
  • 通讯作者: 张玮, 王丽卿 E-mail:weizhang@shou.edu.cn;lqwang@shou.edu.cn
  • 作者简介:陈姗(1993-),女,浙江宁波人,博士生,研究方向为藻类生态学。E-mail:aquachens@163.com
  • 基金资助:

    上海水务局科研项目(沪水科2012-02);上海市优秀技术带头人计划(15XD1522900)

A Preliminary Study on Colonization Process of Periphyton Community in an Estuarine Landscape Lake During Winter in Shanghai

CHEN Shan1,2,3, LIU Zhao-ying1,2,3, ZHANG Wei1,2,3, YUAN Ming-zhe1,2,3, WANG Li-qing1,2,3   

  1. 1. Centre for Research on Environmental Ecology and Fish Nutrient of the Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, China;
    2. Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;
    3. National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, China
  • Received:2018-06-25 Online:2019-03-25 Published:2019-04-25

摘要:

为了解河口型水体附着藻类的建群过程,并获得群落成熟时间,于2015年冬季采用载玻片法对上海临港地区某景观湖进行研究。结果表明,附着藻类共检测出4门37属65种,其中硅藻门数量最多,占附着藻类数量的69.57%,其次为绿藻门,占25.95%。附着藻类总丰度在27 d时达到峰值,丰度为1.13×104~500×104 cm-2;硅藻丰度在25 d时出现峰值,丰度为1.13×104~299.05×104 cm-2。聚类分析(CA)、非度量多维尺度分析(N-MDS)和相似性分析(ANOSIM)将附着藻类建群过程分为5个阶段,各阶段主要优势属分别为菱形藻属、针杆藻属和脆杆藻属,菱形藻属和针杆藻属,菱形藻属,菱形藻属和毛枝藻属,以及异极藻属和毛枝藻属。另外,通过分析藻类群落光合荧光参数动态变化发现,PSⅡ最大光能转换效率(Fv/Fm)变化与附着藻类总丰度变化趋势较一致,可作为指示附着藻类建群过程的潜在指标。挂片后3.5~4周,附着藻类群落发育逐渐成熟,此时段采样效果较佳。

关键词: 建群过程, 河口型, 附着藻类, 成熟时间, 人工基质

Abstract:

In order to understand the colonization process of periphyton community in an estuarine water body and obtain the maturation time, a landscape lake in Shanghai Lingang was studied by using glass slide method in the winter of 2015. A total of 4 classes, 37 genera and 65 species were identified. Bacillariophyta contributed 69.57% of the total periphyton, followed by Chlorophyta (25.95%). The total abundance of periphyton reached to the peak at the 27th day, and ranged from 1.13×104 to 500×104 cm-2. The abundance of Bacillariophyta peaked on the 25th day, and ranged from 1.13×104 to 299.05×104 cm-2. According to results of the clustering analysis (CA), the non-metric multidimensional scaling (N-MDS) analysis and analysis of similarities (ANOSIM), the colonization process of periphyton was divided into 5 stages. And the main dominant taxa in each stage were changed as Nitzschia/Synedra/Fragilaria → Nitzschia/Synedra → Nitzschia → Nitzschia/Stigeoclonium → Gomphonema/Stigeoclonium. Besides, the results of dynamic change of pulse amplitude modulation (PAM) fluorescence measurements in periphyton community showed that the change of maximal photochemical efficiency (Fv/Fm) was consistent with the total abundance of periphyton and it could be used as a potential indicator to show the colonization process of periphyton. It has been found in the study, we found that the periphyton community gradually matured at 3.5 to 4 weeks after hanging slides and it is better to conduct sampling at this time.

Key words: colonization process, estuarine, periphyton, maturation time, artificial substrate

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