Hoang Thi Thu Hoang, Thi Thuy Duong, Kien Trung Nguyen, Quynh Thi Phuong Le, Minh Thi Nguyet Luu, Duc Anh Trinh, Ang Hung Le, Cuong Tu Ho, Kim Dinh Dang, Némery J., Orange Didier, Klein Judith. (2018). Impact of anthropogenic activities on water quality and plankton communities in the Day River (Red River Delta, Vietnam). Environmental Monitoring and Assessment, 190, art. no 67 [18 p.]. ISSN 0167-6369.
Titre du document
Impact of anthropogenic activities on water quality and plankton communities in the Day River (Red River Delta, Vietnam)
Année de publication
2018
Auteurs
Hoang Thi Thu Hoang, Thi Thuy Duong, Kien Trung Nguyen, Quynh Thi Phuong Le, Minh Thi Nguyet Luu, Duc Anh Trinh, Ang Hung Le, Cuong Tu Ho, Kim Dinh Dang, Némery J., Orange Didier, Klein Judith
Source
Environmental Monitoring and Assessment, 2018,
190, art. no 67 [18 p.] ISSN 0167-6369
Planktons are a major component of food web structure in aquatic ecosystems. Their distribution and community structure are driven by the combination and interactions between physical, chemical, and biological factors within the environment. In the present study, water quality and the community structure of phytoplankton and zooplankton were monthly investigated from January to December 2015 at 11 sampling sites along the gradient course of the Day River (Red River Delta, northern Vietnam). The study demonstrated that the Day River was eutrophic with the average values of total phosphorus concentration 0.17 mg/L, total nitrogen concentration 1.98 mg/L, and Chl a 54 μg/L. Microscopic plankton analysis showed that phytoplankton comprised 87 species belonging to seven groups in which Chlorophyceae, Bacillariophyceae, and Cyanobacteria accounted for the most important constituents of the river’s phytoplankton assemblage. A total 53 zooplankton species belonging to three main groups including Copepoda, Cladocera, and Rotatoria were identified. Plankton biomass values were greatest in rainy season (3002.10-3 cell/L for phytoplankton and 12.573 individuals/m3 for zooplankton). Using principal correspondence and Pearson correlation analyses, it was found that the Day River was divided into three main site groups based on water quality and characteristics of plankton community. Temperature and nutrients (total phosphorus and total nitrogen) are key factors regulating plankton abundance and distribution in the Day River.
Plan de classement
Eaux continentales [036EAUCON]
;
Transports solides et qualité physico-chimique des eaux [062MECEAU04]
Descripteurs
QUALITE DE L'EAU ; HYDROBIOLOGIE ; FONCTIONNEMENT DE L'ECOSYSTEME ; PLANCTON ; ZOOPLANCTON ; PHYTOPLANCTON ; FACTEUR ANTHROPIQUE ; TEMPERATURE ; NUTRIMENT ; PHOSPHORE ; AZOTE ; METHODOLOGIE ; ECHANTILLON ; ANALYSE DE DONNEES ; TRAITEMENT DE DONNEES ; COURS D'EAU
Description Géographique
VIET NAM
Localisation
Fonds IRD [F B010071766]
Identifiant IRD
fdi:010071766
