Work

Phytoplankton diversity and water quality bioassessment in typical drinking water reservoirs of the East China region

Year: 2025

Type: article

Abstract: To investigate the phytoplankton community structure and current water quality status in drinking water reservoirs of East China, this study conducted a sampling survey on the hydro-environmental characteristics and phytoplankton community composition in the Changzhao Reservoir, a typical drinking water reservoir in the East China region. Pearson correlation and redundancy analysis (RDA) identified key environmental drivers, while the comprehensive trophic state index (CTSI) and diversity indices (Shannon-Wiener H ′, Margalef D ) assessed water quality. Results showed phytoplankton comprised 47 genera from six phyla, dominated by Bacillariophyta (86.11%–98.29% relative abundance). Cell density (26.04 × 10 4 –60.01 × 10 4 cells·L −1 ) and biomass (908.49–1701.70 μg·L −1 ) peaked at tributary-reservoir confluences, followed by reservoir tail and dam areas. CTSI indicated mesotrophic conditions at all sites, while H ′ and D suggested light pollution. Integrated evaluation classified the reservoir as lightly polluted to moderately eutrophic. Nitrogen nutrients, chlorophyll-a, and COD Mn were key factors influencing community dynamics.

Source: Environmental Research Communications

DOI: 10.1088/2515-7620/ae275b

Authors: Weitu Peng, Fan Yang, Miance Xie, Yang Wan, Kaiping Xu, Wei Wang

Institutions: Zhejiang Institute of Hydraulics & Estuary, Ministry of Natural Resources, Second Institute of Oceanography

Language: English

Topic: Aquatic Ecosystems and Phytoplankton Dynamics

Subfield: Environmental Chemistry

Field: Environmental Science

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: gold

Estimated APC paid: $2,050