scholarly journals Changes in water quality and the phytoplankton community associated with tilapia cage farming in tropical lakes

2016 ◽  
Vol 29 (4) ◽  
pp. 403 ◽  
Author(s):  
Taciana O. Miranda ◽  
Hevelim S. Lima ◽  
Bianca Galon ◽  
Alexandra C. Veronez ◽  
Marcelo S. Moretti ◽  
...  
Keyword(s):  
Water Quality ◽  
Phytoplankton Community ◽  
Tropical Lakes

scholarly journals Phytoplankton community structure and it’s relationships with water quality in Bangka Island, Indonesia

2021 ◽  
Vol 26 (1) ◽  
pp. 37-44
Author(s):  
Muh Yusuf ◽  
Robin Robin ◽  
Wahyu Adi ◽  
Mu’alimah Hudatwi ◽  
Widianingsih Widianingsih ◽  
...  
Keyword(s):  
Water Quality ◽  
Phytoplankton Community ◽  
Environmental Changes ◽  
Total Suspended Solid ◽  
Mining Area ◽  
Suspended Solid ◽  
Test Analysis ◽  
Mining Site ◽  
Average Value ◽  
Primary Producer

Phytoplankton plays an important role in primary productivity in marine environment. Various environmental changes in coastal area will impact the water quality and their phytoplankton compositions. The purpose of this study is to examine the abundance of phytoplankton from two different sites, i.e Tanah Merah (close to mining site) and Semujur Island (away from mining site) in Bangka Island. Phytoplankton and water sample were collected on June- August 2018. Water quality was measured using water quality checker, whereas the phytoplankton was identified under the microscope with a magnification of 100x. Non-parametric Kruskal test and T-test analysis was performed to determine the abundance, diversity, uniform, and dominance of phytoplankton between Sites, respectively. Statistical analyses showed the abundance of phytoplankton at Semujur Island was significantly higher than that at Tanah Merah (p = 0.003). In additions the diversity, uniform, and dominance were also significantly different between sites (all p <0.05). In Semujur Island, Diatoms (Thalassiothrix, Chaetoceros and Thalassionema) were more dominants than the Dinophyceae group. However, in Tanah Merah, the genera Ceratium belong to class Dinophyceae was more dominant than the class Bacillariophyceae. These results performed that the phytoplankton in Tanah Merah and Semujur Island was affected by environment, in this case the mining area. The water quality in Semujur Island (non-mining Area) might have good quality than in Tanah Merah (mining area). The average value of turbidity and Total Suspended Solid in Tanah Merah Waters causes low abundance of phytoplankton. It can be concluded that tin mining can disrupt the abundance and composition of phytoplankton as a primary producer of waters.

scholarly journals Summer aspect of phytoplankton communities in some Montenegrin lakes: Are there changes after more than two decades?

2012 ◽  
Vol 64 (2) ◽  
pp. 745-755
Author(s):  
Jelena Rakocevic
Keyword(s):  
Water Quality ◽  
Sustainable Management ◽  
Aquatic Ecosystems ◽  
Phytoplankton Community ◽  
Management Plan ◽  
Phytoplankton Composition ◽  
Qualitative And Quantitative ◽  
Environmental Monitoring System ◽  
Phytoplankton Communities ◽  
Second Period

Qualitative and quantitative phytoplankton compositions of 10 Montenegrin lakes were investigated in the summer of 2007. The obtained results were compared with a previous study-period that was undertaken two decades ago. In the first period, diatoms numerically dominated the phytoplankton community in all studied lakes, while in the second period, the same was observed only in three of the ten lakes; in other studied lakes the relative contributions of green algae, dinoflagellates and/or cyanobacteria increased, while the contribution of diatoms decreased. The shift observed in phytoplankton composition and diversity in some of the studied lakes indicates an increase in the trophic level over the two decades. The sustainable management plan of the aquatic ecosystems in Montenegro should include the establishment of an environmental monitoring system in order to record any alterations that may take place in water quality.

scholarly journals Phytoplankton Community Investigation and Water Quality Assessment of M River in winter in Shijiazhuang City

2021 ◽  
Vol 267 ◽  
pp. 01035
Author(s):  
Ziqi Zhang ◽  
Lei Yang ◽  
Dongxu Han ◽  
Hongyan Shen
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Water Body ◽  
Phytoplankton Community ◽  
Diversity Index ◽  
Water Quality Assessment ◽  
Species Diversity Index ◽  
Wiener Diversity Index ◽  
Eutrophic Water ◽  
Evenness Index

An investigation of phytoplankton community and water quality for M River was conducted in December 2019.The results showed that 38 species of phytoplankton belonging to 6 phyla and 26 genera were collected. Among them, Bacillariophyta is the richest species, which accounted for 34.21%, followed by Cyanophyta with 26.32% and Chlorophyta with 28.95%. The density of phytoplankton was 63.0*106 inds/L which indicated as eutrophic water body. The highest density was Bacillariophyta, accounting for 51.03%. The Shannon-Wiener diversity index (H’) varied from 1.34 to 2.24, the Margalef Species diversity index (d) varied from 2.71 to 3.85, and the Pielou evenness index (J) varied from 0.38 to 0.67. According to the integrative analysis results of H’, d and J, M River water quality belongs to oligo-polluted, but individual sites belong to meso-polluted.

Seasonal Change of Phytoplankton Community and Water Quality in Yeongsan River Watershed

2013 ◽  
Vol 31 (2) ◽  
pp. 105-112 ◽  
Author(s):  
Misun Son ◽  
◽  
Jong-hwan Park ◽  
Chaehong Lim ◽  
Sekyung Kim ◽  
...  
Keyword(s):  
Water Quality ◽  
Seasonal Change ◽  
Phytoplankton Community ◽  
River Watershed

A change in phytoplankton community index with water quality improvement in Tolo Harbour, Hong Kong

2018 ◽  
Vol 127 ◽  
pp. 823-830 ◽  
Author(s):  
Yue Lei ◽  
Callum Whyte ◽  
Keith Davidson ◽  
Paul Tett ◽  
Kedong Yin
Keyword(s):  
Water Quality ◽  
Hong Kong ◽  
Quality Improvement ◽  
Phytoplankton Community ◽  
Water Quality Improvement ◽  
Tolo Harbour

scholarly journals Phytoplankton community: indicator of water quality in the Armando Ribeiro Gonçalves Reservoir and Pataxó Channel, Rio Grande do Norte, Brazil

2009 ◽  
Vol 69 (2) ◽  
pp. 241-251 ◽  
Author(s):  
NT. Chellappa ◽  
FRA. Câmara ◽  
O. Rocha
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Phytoplankton Community ◽  
Human Consumption ◽  
Wet Season ◽  
Toxic Cyanobacteria ◽  
Before And After ◽  
Density Values ◽  
Quantitative Analyses ◽  
Qualitative Similarity

The current study analysed spatial-temporal modifications of the phytoplankton community and water quality, during dry and wet seasons. The phytoplankton community was studied in three areas: Armando Ribeiro Gonçalves Reservoir (ARG), which is an important public use reservoir in RN, Pataxó Channel (PC-before water treatment), Itajá, RN, and after the water treatment (WTP). Water samples from the reservoir were collected during both dry (January, February and November, 2006) and wet seasons (March to June, 2006). Quali-quantitative analyses of phytoplankton were carried out. Results indicated a qualitative similarity of the phytoplankton community in the three areas. However, significant differences were registered in these areas in relation to species relative abundance, with dominance of potentially toxic cyanobacteria, such as Planktothrix agardhii Gomont (dry season) and Microcystis aeruginosa Kutz (wet season). Ecological indexes obtained higher values before water treatment. Nevertheless, densities of cyanobacteria (organisms/mL) gradually reduced in the waters of the reservoir and of the Pataxó Channel before and after water treatment. After the treatment, density values of cyanobacteria were adequate for human consumption, according to the values established by the Health Ministry.

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