LIXuan,JIANGTao-yang,WANGCe-wen,et al.Change of Epiphytic Algal Community and Its Relationship with Environmental Factors in Landscape Water[J].China Water & Wastewater,2023,39(23):111-117.
Change of Epiphytic Algal Community and Its Relationship with Environmental Factors in Landscape Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第23期
Page:
111-117
Column:
Date of publication:
2023-12-01
- Keywords:
- landscape water; epiphytic algae; biomass; community composition; environmental factors; autumn and winter
- Abstract:
- This paper analyzed the biomass, algal community composition and related environmental factors of epiphytic algae on submerged plants in a typical artificial landscape water body in Chongqing from autumn (September 2019) to winter (January 2020), so as to explore the relationship between the epiphytic algae and environmental factors in landscape water during autumn and winter. The peak of the autumn epiphytic algae bloom in the landscape water was in mid-October. In contrast, the peak of the winter algae bloom was in January, and the biomass in winter was 1.9 times that in autumn. A total of 4 phyla and 21 genera were identified from 4 sampling sites during the sampling period, including 9 genera belonging to Bacillariophyta, 7 genera belonging to Chlorophyta, 4 genera belonging to Cyanobacteria and 1 genus belonging to Euglenophyta. In autumn, 14 genera belonging to 3 phyla were identified, and 16 genera belonging to 4 phyla were identified in winter. Four common genera were identified in autumn, namely Oscillatoria sp., Synedra sp., Achnanthes sp. and Gomphonema sp., and two common genera (Oscillatoria sp. and Achnanthes sp.) were identified in winter. The multiple regression analysis revealed that pH and total nitrogen were the main environmental factors affecting the biomass of epiphytic algae in the typical landscape water in Chongqing in autumn and winter. The main environmental factors affecting the biomass of the epiphytic algae were water temperature and ammonia nitrogen in autumn, while those were illuminance, total nitrogen and water temperature in winter, indicating that the environmental factors affecting the biomass of epiphytic algae were different in autumn and winter. These results indicated that the changes of landscape water environment in autumn and winter had an important impact on the biomass and community composition of epiphytic algae.
Last Update:
2023-12-01