TAILIEUCHUNG - A case study of phytoplankton used as a biological index for water quality assessment of Nhu Y river, Thua Thien - Hue

Studies of the composition and density of phytoplankton and the water quality of Nhu Y river were conducted over six months (March to August 2011). Phytoplankton samples were collected by filtration and immediately preserved in Lugol’s solution. The phytoplankton species composition recorded 117 species belonging to six divisions: Cyanobacteria (24 taxa), Bacillariophyta (14 taxa), Chlorophyta (45 taxa), Euglenophyta (31 taxa), Cryptophyta (2 taxa), and Dinophyta (1 taxa), of which Chlorophyta and Euglenophyta were dominant in terms of species numbers. The total phytoplankton density fluctuated from 110,146 to 5,964x103 individuals/litre and Cyanophyta were dominant in terms of individual density. The algal genus pollution index (Palmer index) ranged from 30 to 41, indicating that the water was highly organically polluted, and the Shannon-Weiner index results of showed moderately to heavily polluted water. With values for the Diatomeae index of more than , the quality of the eight sites during the period of the study showed that the aquatic environment was eutrophic. Phytoplankton and their indexes are useful tools for assessing water environment quality. | A case study of phytoplankton used as a biological index for water quality assessment of Nhu Y river, Thua Thien - Hue

• Môi trường
• Palmer index
• Shannon Weiner index
• Water quality
• Biological index for water
• Water quality assessment
• Agricultural drought
• Agricultural rezoning
• Agricultural drought rezoning
• Selecting drought index
• Adjustment of the formula of local surface water quality assessment
• The formula of local surface water quality assessment
• Local surface water quality assessment
• The old WQI formula
• Surface water
• Water quality index
• Physicochemical ones
• Water quality index proposed
• Relative water quality index
• Aggregate water quality
• Coastal water
• Application of water quality index
• Assessment of sea water quality
• The Gulf of Tonkin in 2018
• Wind field
• Wind rose
• Groundwater quality assessment
• Soluble Sodium percentage
• Nemerows Pollution Index
• Assessment and mapping
• Mapping of irrigation water quality index
• Irrigation water quality index
• Bapatla mandal
• Earth and environmental sciences
• Benthic community of water quality
• Aassessment of water quality
• uBiological index in RAMSAR
• socio economic situation
• the project organization
• implementation methods
• the current situation
• water resources
• water quality facility
• Dong Nai river basin
• Environmental monitoring
• Economic development activities
• Organic matters
• Surface water quality
• Chemical oxygen demand
• Biochemical oxygen demand
• Me Kong delta water resources assessment studies
• Mekong Delta Masterplan project
• Hydrology and surface water resources
• Description of the mekong delta of Viet Nam
• Issues to be solved
• Receiving wastewater
• Agriculture and aquaculture
• Calculated water quality index
• Physico chemical
• Waste water
• Fresh water quality
• Physico chemical properties
• Tannery waste water and its
• Coastal sea water quality
• Tourism beaches
• Sea water quality
• Economic activities
• Environmental quality
• Aquaculture ponds
• Saltwater intrusion
• Surface water quality assessment
• Surface water supply
• Assessing existing surface water supply sources
• Salinity hazard in existing water sources
• Groundwater quality
• Rewa block
• Madhya Pradesh
• Irrigation purpose of rewa block
• Water quality assessment for drinking
• Aquatic bodies
• Powai lake
• Urban lake of mumbai
• Vấn đề môi trường
• phát triAn assessment of water quality
• the Lower Mekong Basin
• mekong evironment
• Environmental Issues
• Recent Infrastructure Development
• the Mekong Delta
• environmental pollution
• river water quality
• Preliminary assessment
• Scientific reports
• research projects
• scientific research
• Water quality remediation through aquaponic systems
• Water quality remediation
• Media Filled Systems
• Floating bed systems
• Plants to recycle wastewater
• Limestone island
• Vietnam's typical limestone islands
• Marine biodiversity
• Pomegranate garden
• Borewells water used
• Cultivation of pomegranate crop
• Strategy for quality
• assurance and quality control
• Accurate taxonomic identification
• Consistent biological nomenclature
• Selecting a fish taxonomic specialist
• Pre sampling fish species list
• The Pollution Index
• Statistical tools
• Determine the influence
• Anthropogenic sources