Water quality. Guidance standard for the identification, enumeration and interpretation of benthic diatom samples from running waters

2004 ◽  
Keyword(s):  
Water Quality ◽  
Benthic Diatom ◽  
Running Waters

Demonstration of the Bzura River restoration using diatom indices

Biologia ◽  
2011 ◽  
Vol 66 (3) ◽  
Author(s):  
Barbara Rakowska ◽  
Ewelina Szczepocka
Keyword(s):  
Water Quality ◽  
Benthic Diatom ◽  
Biological Assessment ◽  
Sensitivity Index ◽  
Running Waters ◽  
Class Iii ◽  
Gradual Improvement ◽  
Diatom Index ◽  
Diatom Indices ◽  
The Impact

AbstractThe quality of running waters is reflected in the composition of benthic diatom assemblages. The biological assessment of changes in the composition, and thus of changes in water quality, was carried out in the lowland mid-sized Bzura River, Central Poland, over the period of 30 years. The benthic diatom material consisted of samples collected in two investigation periods, in 1972 and in 2003–2004. The methods applied were three diatom indices, IPS — Specific Pollution Sensitivity Index, GDI — Genetic Diatom Index and TDI —Trophic Diatom Index, and the OMNIDIA computer program, which are commonly used in Europe. The aim of the study was demonstrating the process of restoration that occurred in the river. The Bzura was included to the most polluted ones in Poland till 1996. Since 1998 a gradual improvement in water quality has been observed, which is caused by a number of biological-technical measures, mostly a proper organization of sewage management in most cites located on the river. In 1972 the IPS classified Bzura water into Water Quality Class IV-V, while in 2003–2004 it reached much higher values, i.e. Class III–IV. On the basis of the GDI Class III was determined in the whole river in 2003–2004, while its values indicated Class III–IV in 1972. The trophic index, TDI attributed Bzura water to the eutrophic to hypereutrophic zone in 2003–2004, and to one degree better water, i.e. from the mesoeutrophic to eutrophic zone, in 1972.From the carried out research it follows that the IPS is the best index, which may be commonly applied to assess saprobic pollution of running waters in Poland. It indicated an improvement in water that occurred in the Bzura over 30 years and took into account the impact of pollution sources and tributaries in given river sections.

The concentrating method of benthic diatom affects the growth of juvenile sea cucumber (Apostichopus japonicus) and water quality

2017 ◽  
Vol 48 (8) ◽  
pp. 4503-4511 ◽  
Author(s):  
Ce Shi ◽  
Shuanglin Dong ◽  
Junwei Li ◽  
Fang Wang ◽  
Qinfeng Gao ◽  
...  
Keyword(s):  
Water Quality ◽  
Sea Cucumber ◽  
Apostichopus Japonicus ◽  
Benthic Diatom

scholarly journals Distribution of Aquatic Diptera larvae of Yeşilırmak River (Turkey) and ecological characteristics

2020 ◽  
Vol 37 (4) ◽  
pp. 397-407
Author(s):  
Ozge Basoren ◽  
Nilgün Kazancı
Keyword(s):  
Water Quality ◽  
Power Plants ◽  
Diversity Index ◽  
Running Waters ◽  
Hydroelectric Power ◽  
Class Iii ◽  
Ecological Characteristics ◽  
Physicochemical Variables ◽  
Wiener Diversity Index

Yeşilırmak River is one of the most important running waters of Turkey, but the water quality of this river has been affected by agricultural and domestic pollution. Dams and hydroelectric power plants also threaten the habitat quality and biodiversity of the river. This research contains investigation of Diptera fauna in Yeşilırmak River and tributaries, determination ecological characteristics of the collecting sites according to System A and System B Classification of Water Framework Directive (WFD), assessment of water quality of the studied sites by measuring the physicochemical variables (water temperature, pH, electrical conductivity, dissolved oxygen, NO2-N, NO3-N, NH4-N, PO4-P) and using some metrics (abundance, number of taxa, Simpson Diversity Index, Shannon-Wiener Diversity Index, Margalef Diversity Index, Evenness). Thirty-three (33) sites were sampled from Yeşilırmak River and its tributaries in June 2010. Diptera individuals were detected in 20 of them. Two thousand four hundred forty-five (2445) individuals belonging to 12 families and 16 taxa were identified in 20 sampling sites. The water quality classes of the studied sites were Class III (moderate pollution) and Class IV (heavily pollution) according to values of physicochemical variables.

scholarly journals Applicability of Benthic Diatom Indices Combined with Water Quality Valuation for Dish Lake from Nanjishan Nature Reserve, Lake Poyang

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2732
Author(s):  
Junfei Yang ◽  
Yong Ji ◽  
Ruyu Yan ◽  
Xingchen Liu ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Water Quality ◽  
Dominant Species ◽  
Nature Reserve ◽  
Quality Parameters ◽  
Freshwater Ecosystems ◽  
Benthic Diatom ◽  
Water Quality Parameters ◽  
Diatom Index ◽  
Diatom Indices ◽  
Lake Poyang

Benthic diatom indices developed in the Europe Union have been widely accepted as indicators of the trophic state and water quality in freshwater ecosystems. In China, most of the benthic diatom-based indices have not been widely tested or evaluated before. For this purpose, the water quality parameters and benthic diatoms community structures at 20 sample sites in the dish lake of Nanjishan Nature Reserve in Poyang Lake were investigated in this study and 18 widely-applied diatom indices were established. The statistical results indicated that most water quality parameters including Total Nitrogen (TN), Total Phosphorus (TP), ammonia nitrogen (NH4+), Chemical Oxygen Demand (COD) and Chlorophyll (Chl) were highly correlated with each other at a confidence level of 0.05. Water quality sampling sites from 8 lakes could be classified into 4 groups based on the integrated comprehensive scores using principal components analysis (PCA). Monitoring sites could also be divided into 4 groups based on clustering analysis with hierarchical methods for diatom dominant species in 20 sampling sites. According to the status of water ecological health recognition and box plot analysis in different water quality groups and diatom dominant species groups, only 3 diatom indices including the Biological Diatom Index (IBD), Specific Pollution Sensitivity Index (IPS) and Louis Leclercq Diatom Index (IDSE) demonstrated good evaluation suitability and good correlation within different water quality grades at the final stage. The above results revealed that IBD, IPS and IDSE were the most suitable diatom indices for the water quality evaluation of the dish lake in the Nanjishan Nature Reserve, Lake Poyang.

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