scholarly journals Application of the biotic index IBE-IOC for water quality assessment in wadeable streams in south-east Brazil

2011 ◽  
Vol 23 (1) ◽  
pp. 74-85 ◽  
Author(s):  
Riccardo Mugnai ◽  
Daniel Forsin Buss ◽  
Renata Bley Oliveira ◽  
Cristiane Sanfins ◽  
Alcimar do Lago Carvalho ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Water Quality Assessment ◽  
Biotic Index ◽  
Wadeable Streams

scholarly journals New Water and Biotic Quality Assessment Indices for a tropical reservoir based on fuzzy logic

2020 ◽  
Vol 15 (5) ◽  
pp. 1
Author(s):  
Andres Paladines Andrade ◽  
Marley Vellasco ◽  
Karla Figueiredo ◽  
Francisco Gerson Araújo ◽  
Christina Wyss Castelo Branco
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Fuzzy Inference ◽  
Water Quality Assessment ◽  
Biotic Index ◽  
Quality Level ◽  
Tropical Reservoir ◽  
Biological Variables ◽  
Inference Systems

The complexity of evaluating the quality of an aquatic environment with its numerous variables has resulted in several quality indexes to synthesize all information in a single value. However, most of these indexes are based on few environmental variables, losing information from other relevant variables. This article presents a new model capable of representing the quality level of a tropical oligo-mesotrophic reservoir on a numerical scale, considering the subjectivity implicit in the concept of quality, and involving several physical, chemical and biological variables. The proposed model, called "Fuzzy Indices for Water Quality Assessment and Biotics" (FUZZY-WBQAI), is based on fuzzy inference systems, providing a way to deal with the uncertainty between the quality categories. A computational tool was developed, which automatically assesses the quality of water, considering different methodologies that depend on the stratification conditions and the longitudinal zone of the reservoir. The model calculates two indices: one for water quality and one biotic that uses metrics from the fish assembly. The model was effective in revealing the decrease in water quality in summer months with higher temperature and precipitation. The effect of the mixture of the stratified reservoir in winter in decreasing the water quality in an area of fish cultivation was highlighted. The biotic index was sensitive to spatial changes in the environmental quality of the reservoir. The results were considered satisfactory, in agreement with the specialized knowledge, and can provide a rapid diagnosis of water conditions in oligo-mesotrophic reservoirs in the tropics.

Surface Water Quality Assessment. Case Study: Târnava Mare River, Mediaș Town-Romania

2011 ◽  
Vol 4 (5) ◽  
pp. 70-72
Author(s):  
Cristina Roşu ◽  
◽  
Ioana Piştea ◽  
Carmen Roba ◽  
Mihaela Mihu ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Assessment ◽  
Surface Water Quality ◽  
Water Quality Assessment

Modern State of Zooplankton and Water Quality Assessment in the Selenga River

2009 ◽  
Vol 45 (5) ◽  
pp. 3-14
Author(s):  
N. G. Sheveleva ◽  
I. V. Arov ◽  
Ye. A. Misharina
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Water Quality Assessment ◽  
Modern State ◽  
Selenga River

Water Quality Assessment in and Around Sandur Taluk, Bellary District, South India

2016 ◽  
Vol 5 (1) ◽  
pp. 325-332
Author(s):  
B.V. Suresh Kumar ◽  
◽  
R.K. Sunil Kumar ◽  
K.N. Prakash Narasimha ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
South India ◽  
Water Quality Assessment
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