Water quality. Guidance standard for the surveying of aquatic macrophytes in running waters

2015 ◽  
Keyword(s):  
Water Quality ◽  
Aquatic Macrophytes ◽  
Running Waters

scholarly journals Field evidence of the influence of aquatic macrophytes on water quality in a shallow eutrophic lake over a 13-year period

2014 ◽  
Vol 26 (2) ◽  
pp. 176-185 ◽  
Author(s):  
Edélti Faria Albertoni ◽  
Cleber Palma-Silva ◽  
Claudio Rossano Trindade Trindade ◽  
Leonardo Marques Furlanetto
Keyword(s):  
Water Quality ◽  
Chlorophyll A ◽  
Aquatic Macrophytes ◽  
Eutrophic Lake ◽  
Nutrient Concentrations ◽  
Suspended Material ◽  
Water Characteristics ◽  
Field Evidence ◽  
Water State ◽  
Macrophyte Growth

AIM: The main objective of this work is to describe the changes in water characteristics of a shallow subtropical lake, in periods with and without growing of macrophytes, related to periods of clear-macrophyte dominance and turbid-phytoplankton dominance states. METHODS: The study was conducted in Biguás Lake, in the south coastal plain of Brazil (32° 04' 43" S and 52° 10' 03" W). Samplings were carried out monthly between October 2000 and November 2013. The limnological variables measured in the water column were dissolved oxygen (DO), water temperature, pH, electrical conductivity (EC), chlorophyll-a, total nitrogen (TN), total phosphorous (TP) and suspended material (SM). Data were grouped according to periods with macrophyte growth dominance (MD) and without macrophytes, with phytoplankton dominance (PD), and applied t- tests among TP, TN, Chlorophyll-a and SM. During macrophyte growth we estimated the coverage (%) and biomass variation of plants. RESULTS: Over the 13 years, the lake was well oxygenated, alkaline, and with a temperature variation according to subtropical seasonality. The lower values of all of the limnological variables were verified during periods of macrophyte growth, characterizing periods of clear and turbid waters. CONCLUSIONS: The influence of aquatic macrophytes in improving water quality in this shallow lake during the studied period, reducing nutrient concentrations, chlorophyll-a and suspended material in water, favoring the maintenance of a clear water state, was verified.

scholarly journals AN ANALYSIS OF EFFECTS OF AQUATIC MACROPHYTES ON WATER QUALITY IN A SHALLOW MARSH

2005 ◽  
Vol 49 ◽  
pp. 1219-1224 ◽  
Author(s):  
Kunihiko AMANO ◽  
Toshikazu TOKIOKA ◽  
Kohji TSUSHIMA
Keyword(s):  
Water Quality ◽  
Aquatic Macrophytes

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 A Review of Water Quality Improvement with the Help of Aquatic Macrophytes

2020 ◽  
Vol 15 (3) ◽  
pp. 398-405
Author(s):  
Harvi Arvindbhai Patel ◽  
Susmita Sahoo
Keyword(s):  
Water Quality ◽  
Water Contamination ◽  
Aquatic Macrophytes ◽  
Atomic Weight ◽  
Review Article ◽  
Green Technology ◽  
Metallic Elements ◽  
Environment Friendly ◽  
Energy Inputs ◽  
High Population Growth

Metallic elements in the water have been rapidly increased due to the high population growth, urbanization, and industrialization. Metals which have high density and high atomic weight are non-degradable, they persist in various environs, have the potentiality to enter the food chain or food web. Due to their toxic nature, heavy metallic contamination has become the most hazardous pollutant in the growing world. Therefore, reduce or remove water contamination is the predominant importance. Utilization of plants to refine water quality is a green technology, which is an effective method, environment-friendly and consumes fewer energy inputs, and also carried out less amount of cost. In this review article, we enlighten the potential of various aquatic macrophytes to reduce or remove the heavy metal contaminants from the aquatic eco-system.

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