Dynamics of phytoplankton communities in the Jiangdong Reservoir of Jiulong River, Fujian, South China

• Published in: Chinese journal of oceanology and limnology Vol. 32; no. 2; pp. 255 - 265
• Main Author: 田永强 黄邦钦 俞超超 陈能汪 洪华生
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.03.2014; Springer Berlin Heidelberg; Springer Nature B.V
• Subjects: algal blooms; Aulacoseira granulata; autumn; Bacillariophyta; Biology; biomass; Blooms; China; Chlorophyta; cold; Cold water; Contamination; Cryptomonas; Cryptomonas erosa; Cryptomonas marssonii; Cryptophyta; Cyanobacteria; Cyanophyta; Cyclotella meneghiniana; Dictyosphaerium; Dictyosphaerium ehrenbergianum; Dinophyta; Drinking water; Earth and Environmental Science; Earth Sciences; Environmental factors; Freshwater; Granulation; Irradiance; light intensity; Low turbulence; Marine; Merismopedia; Merismopedia tenuissima; Nutrient concentrations; Nutrient content; Oceanography; Pandorina; Peridiniopsis; Phytoplankton; Phytotoxicity; Plankton; Pseudanabaena; Pseudanabaena mucicola; Raphidiopsis; Reservoirs; River discharge; River flow; Rivers; Scenedesmus quadricauda; Spring; Spring (season); Summer; Turbulence; turbulent flow; Water discharge; Water temperature; Winter; 中国南方; 九龙江; 典型对应分析; 水库; 浮游植物群落; 福建省; 细胞浓度; 群落动态; South China Sea; ISEW, China, People's Rep., Fujian; ISEW, China People's Rep., Fujian Prov; China, People's Rep., Fujian Prov., Jiulong R; China; canonical correspondence analysis (CCA); Jiulong River; phytoplankton composition; environmental factors; community succession
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/s00343-014-3158-7

Phytoplankton blooms occurring in the Jiangdong Reservoir of Jiulong River, Fujian Province, South China, are a potential source of contamination of the drinking water of Xiamen （Amoy） City. To understand the main factors governing phytoplankton composition and succession, we sampled phytoplankton and measured environmental parameters in the reservoir, weekly or biweekly from Jan. 2010 to Feb. 2012. We identified 123 species of phytoplankton from 7 phyla and 74 genera. The major phyla were Chlorophyta, Bacillariophyta, Cryptophyta, Cyanophyta, and Dinophyta. The main trend in the succession of phytoplankton was from prevalence of Cryptophyta-Bacillariophyta communities to those of Chlorophyta-Cyanophyta. High cell concentrations of Cryptophyta, predominantly Komma caudate, Cryptomonas marssonii, and Cryptomonas erosa, were present in winter, associated with low river discharge and cold water. Bacillariophyta, primarily Cyclotella meneghiniana, Aulacoseira granulata, and Aulacoseira granulata var. angustissima, dominated in early spring, coinciding with high turbulence and low irradiance. During early summer and autumn, Chlorophyta, comprising Scenedesmus quadricauda, Dictyosphaerium ehrenbergianum, and Pandorina sp. were prevalent during conditions of warmer water temperatures and low turbulence. Cyanophyta, with dominance ofPseudanabaena mucicola, Merismopedia tenuissima and Raphidiopsis sp. increased throughout the summer, coinciding with higher water temperatures and lower nutrient concentrations. Dinophyta content was occasionally high during winter and summer. Peridiniopsis penardii （Dinophyta） bloomed during winter 2009, with a persistently high biomass recorded into early spring. Canonical correspondence analysis indicated that phytoplankton communities were influenced by river discharge, irradiance, water temperature, and nutrient concentrations.