Abstract
The phytoplankton community in the river is closely related to the location of the river and the impact of human activities. To summarize the patterns of phytoplankton community changes in rivers and to analyze the reasons for these patterns and differences, we sampled the three tributaries of the Dongjiang River at different latitudes in the dry and rainy season for three years. The results showed that the three rivers were mesotrophic, lightly eutrophic and moderately eutrophic respectively. From the south to the north, the water temperature and nutrition showed an increasing trend. In two different seasons, the differences in the water temperature and dissolved oxygen were clear. In the dry season, results of the multidimensional scaling (MDS) analysis indicated that the phytoplankton community structures in the Li River and Qiuxiang River were similar. Regardless of the number of species, the cell abundance or the dominance index, Bacillariophyta were found to be dominant. Chlorophyta was dominant in the Danshui River. In the rainy season, Bacillariophyta, Bacillariophyta-Chlorophyta and Chlorophyta-Cyanophyta became the dominant types in the Li River, Qiuxiang River and Danshui River, respectively. These different patterns in phytoplankton community variation were affected by both the water quality and temperature.
Highlights
Phytoplankton, as the main primary producers of the aquatic environment and the foundation of the food web, play an important role in nutrient cycling and the energy conversion process [1]
Numerous research studies in different rivers have showed that temperature, light and nutrients are important factors impacting the succession of the phytoplankton community [2,3,4]
These factors often simultaneously determine the succession of the phytoplankton community
Summary
Phytoplankton, as the main primary producers of the aquatic environment and the foundation of the food web, play an important role in nutrient cycling and the energy conversion process [1]. Numerous research studies in different rivers have showed that temperature, light and nutrients are important factors impacting the succession of the phytoplankton community [2,3,4]. These factors often simultaneously determine the succession of the phytoplankton community. Sommer with her colleagues summed up the famous PEG (Plankton Ecology Group) model for the seasonal variation of phytoplankton biomass in a temperate mesotrophic lake [5]. Since this model has been applied to many comparative studies of different types of lakes and rivers [6,7]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
