Journal of Ecology and Rural Environment ›› 2019, Vol. 35 ›› Issue (3): 345-351.doi: 10.19741/j.issn.1673-4831.2018.0355

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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

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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