scholarly journals Phytoplankton as a bioindicator of the water quality of Lake Malenets (Pskov Region)

2020 ◽  
Vol 9 (3) ◽  
pp. 58-61
Author(s):  
Tatiana V. Drozdenko ◽  
Irina V. Kek ◽  
Tatiana A. Mishkova
Keyword(s):  
Water Quality ◽  
Practical Importance ◽  
Ecological State ◽  
Phytoplankton Species Composition ◽  
Pskov Region ◽  
Quantitative Indicators ◽  
First Time ◽  
Geographical Characteristics ◽  
Degree Of Similarity

This paper shows the use of planktonic algae in determining the ecological state of the reservoir. Phytoplankton is an important link in the aquatic ecosystem, which is the first to react to the slightest fluctuations in environmental conditions by changing its structure and quantitative characteristics, and therefore is very convenient in bioindication studies. In the summer of 2017, the planktonic algaflora of Lake Malenets, located on the territory of the Mikhailovskoye Museum-Reserve in the Pushkinogorsk District of the Pskov Region, was studied for the first time. In total, 87 species and intraspecific taxa of phytoplankton were identified from 8 phylums, 12 classes, 20 orders, 35 families, and 58 genera. The dominant algaflora complex is characterized as diatom-chlorophytic with the presence of golden algae. Using the Sierensen-Chekanovsky index, the degree of similarity of the phytoplankton species composition of Lake Malenets with the nearby Lake Kuchane was estimated. The calculation of quantitative indicators of phytoplankton abundance and biomass was carried out, the ecological and geographical characteristics of microalgae were presented, and the water quality class of Lake Malenets was established. The obtained results are of practical importance, since they allow to establish the ecological state of the water body as well as to develop methodological recommendations for its improvement and stabilization.

scholarly journals The Ecological Estimation of Sredniy Kaban Lake Based on Molecular Methods

2018 ◽  
Vol 7 (4.7) ◽  
pp. 88
Author(s):  
M. Khusainov ◽  
Ludmil L.Frolova
Keyword(s):  
Water Quality ◽  
Marker Gene ◽  
Metagenomic Data ◽  
Sporting Events ◽  
Ecological State ◽  
International Database ◽  
Surrounding Environment ◽  
Fastq Format ◽  
Visual Approach

Sredniy Kaban lake is part of the system of Kaban urban lakes, experiencing anthropogenic load, and being currently used for sporting events in rowing. Monitoring of the reservoir is carried out regularly with restoration and improvement activities, and green beaches landscaped. Assessment of the ecological state of the reservoir and the surrounding environment is carried out by different methods, one of the main is bioindication. The method is based on the study of indicator species, identified by obsolete methods based on their morphological features. As an alternative to the visual approach with the use of a microscope, the paper considers a method for identifying hydrobionts by the CO1 marker gene based on the DNA-barcoding method and modern sequencing methods. The sequenced sequences of the fragment of the CO1 hydrobiont gene of freshwater Sredniy Kaban lake in the autumn (2016) and summer (2017) sampling periods in the fastq format are included in the international database on the NCBI’s website with unique numbers SRR5852708 (2016) and SRR5839796 (2017). The paper presents the results of the analysis and gives an assessment of the water quality of Sredniy Kaban lake (Kazan, Russia). Comparative analysis of metagenomic data shows that most of the animals of Sredniy Kaban lake are grouped near the b-mesosaprobic zone in 2016, and o-saprobic zone in 2017. By water quality Sredniy Kaban lake is transitional from b-o-saprobic to b-a-mesosaprobic as of the results of 2016, and according to the results of 2017 - from b-o-saprobic to o-saprobic, which is due to the restoration activities carried out during this period on Sredniy Kaban lake.  

scholarly journals CALCULATION OF THE COMPETITIVE ABILITY CRITERIA OF CEMENT PLANTS

2018 ◽  
Vol 3 (3) ◽  
pp. 101-106
Author(s):  
Мэлс Вердиян ◽  
Mels Verdiyan ◽  
В.С. Богданов ◽  
Vasiliy Bogdanov ◽  
Иван Тынников ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Competitive Ability ◽  
Practical Importance ◽  
Cost Index ◽  
Cement Production ◽  
Market Competitiveness ◽  
Energy Indicators ◽  
Quality Of Products ◽  
First Time

The article describes the method of assessing the competitiveness of cement plants, taking into account the quality of products and their energy efficiency. For the first time the criteria of cement production competitiveness and of cement quality have been offered and scientifically grounded, which allowed defining the degree of energy efficiency of each plant. This evaluation of the performance of cement plants is of great scientific and practical importance, as it determines their market attractiveness, reflects the quality of their operation, makes it possible to objectively choose the direction of the existing plants modernization, or of the construction of a new plant. The advantages of wet-method cement production plants not only in ecological, but also on fuel and energy indicators have been demonstrated. The obtained results give grounds to recommend for each plant its energy cost index. The market competitiveness of the produced cement increases with the minimization of this cost index.

scholarly journals The seasonal dynamics of phytoplankton and water quality in the Prut River lower sector

2021 ◽  
Author(s):  
Laurenţia Ungureanu ◽  
◽  
Daria Tumanova ◽  
Grigore Ungureanu ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Seasonal Dynamics ◽  
Phytoplankton Composition ◽  
Republic Of Moldova ◽  
Qualitative And Quantitative ◽  
The Republic ◽  
Quantitative Indicators ◽  
Prut River

The article presents the results on qualitative and quantitative indicators of phytoplankton of the Prut River lower sector within the Republic of Moldova in 2018-2020. In phytoplankton compositions 72 species were identified. Seasonal and long-term patterns of phytoplankton development have been established in Prut River lower sector. The numbers of phytoplankton changed within the limits 1,06 to 20,32 mln. cell/l, with biomass 1,23-21,64 g/m3. The values of saprobic indexes, estimated on the basis of species-indicators (52 species) from phytoplankton composition, which are in proportion of 58% typically β-mezosaprobic, confirm the following: the water quality of lower Prut River sector in the period 2018-2020 was satisfactory for the development of phytoplankton and was attributed mainly to II-III (good-moderately polluted) quality classes.

scholarly journals Primeiro registro do gênero e espécie Neblinagena doylei Kodada & Jäch (Coleoptera: Elmidae: Larainae) no Brasil

2016 ◽  
Vol 9 (1) ◽  
pp. 62-64
Author(s):  
Jaime de Liege Gama Neto ◽  
Mahedy Araujo Bastos Passos
Keyword(s):  
Water Quality ◽  
South America ◽  
Geographic Distribution ◽  
First Time

Resumo. Registra-se pela primeira vez no Brasil Neblinagena doylei Kodada & Jäch (Elmidae, Larainae) ampliando a distribuição geográfica do gênero e da espécie na América do Sul. São apresentadas informações sobre o ambiente e a qualidade da água do local de coleta da espécie. Adicionalmente, citam-se os seguintes gêneros e espécies de Elmidae amostradas juntamente com N. doylei: Cylloepus, Microcylloepus e Neoelmis e as espécies Xenelmis micros Grouvelle e Xenelmis tarsalis Hinton.First record of Genus and Species Neblinagena doylei Kodada & Jäch (Coleoptera: Elmidae: Larainae) in BrazilAbstract. We recorded, for the first time in Brazil, the genus and species Neblinagena doylei Kodada & Jäch, expanding the geographic distribution of the genus and species in South America. We complement this information with data on the environment and water quality of the locality where the species was collected. Adittionally, we cited the following genera and species of Elmidae collected along with N. doylei: Cylloepus, Microcylloepus, Neoelmis, Xenelmis micros Grouvelle and Xenelmis tarsalis Hinton.

Widespread underestimation of the danger of groundwater contamination by shortcuts into aquifers

2020 ◽  
Author(s):  
Andreas Hartmann ◽  
The karst vulnerablity research consortium
Keyword(s):  
Water Quality ◽  
Groundwater Contamination ◽  
Large Scale ◽  
Scale Model ◽  
World Population ◽  
Continental Scale ◽  
Scale Modelling ◽  
Agricultural Pollutants ◽  
First Time

<p>Groundwater pollution threatens human and ecosystem health in many areas around the globe. Shortcuts to the groundwater through enlarged cracks and fissures, often referred to as concentrated recharge, are known to transmit short-lived pollutants into carbonate aquifers endangering water quality of around a quarter of the world population. However, the large-scale impact of concentrated recharge on water quality remains poorly understood. Here we apply a continental-scale model to quantify for the first time the danger of groundwater contamination by degradable pollutants through concentrated recharge in carbonate rock regions. We show that concentrated recharge is the primary reason for the rapid transport of contaminants to the groundwater, increasing the percentage of non-degraded pollutants from <1% in areas without concentrated recharge to around 20-50% in areas where concentrated recharge is present. Our findings are most pronounced in the Mediterranean region where agricultural pollutants in groundwater recharge like Glyphosate can exceed allowed concentrations by up to 19 times. Our results imply that in regions where shortcuts to the groundwater exist, continuing industrial agricultural productivity to optimize food production may result in a widespread reduction of available drinking water and harm ecosystem services more intense than presently available large-scale modelling concepts suggest.</p>

scholarly journals Assessment of the ecological state of the pond on the phytoplankton indicators (for example, Kuchane Lake, Pskov Region)

2017 ◽  
Vol 6 (1) ◽  
pp. 22-26
Author(s):  
Tatiana Victorovna Drozdenko ◽  
Anastasiya Andreevna Kurka
Keyword(s):  
Structural Characteristics ◽  
Ecological Condition ◽  
Taxonomic Composition ◽  
Anthropogenic Factors ◽  
Ecological State ◽  
Aquatic Communities ◽  
Pskov Region ◽  
Living Organisms ◽  
Main Components

Aquatic ecosystems are in balance with the external environment factors and have a complex system of biological connections, disturbed under the influence of anthropogenic factors. First of all, the influence of anthropogenic factors affect the taxonomic composition of aquatic communities. Assessment of the degree of water pollution on the composition of living organisms to quickly establish its ecological condition. In summer 2016 the first time studied the planktonic algae Kuchane Lake located in Pushkinogorsky district of the Pskov Region on the territory of the Museum-Reserve of A.S. Pushkin Mikhailovskoye. Phytoplankton is one of the main components of the aquatic ecosystem, quickly responding to any changes in the environmental conditions, and its structural characteristics are the important elements in evaluating the ecological state of the pond. The article discusses the use of phytoplankton to assess the water quality of Kuchane Lake. Showed taxonomic composition of phytoplankton of the lake in the summer. Algae is characterized by relatively high species diversity. One hundred twenty six species taxa of phytoplankton belonging to 8 phylums were identified during the research: Chlorophyta (45), Bacillariophyta (38), Euglenohyta (15), Cyanophyta/ Cyanoprocaryota (9), Dinophyta (7), Chrysohyta (6), Сryptophyta (5), Xanthophyta (1). The basis of phytoplankton up green and diatoms. Investigated ecological and geographical analysis of phytoplankton and saprobiological analysis of the quality of the lake water.

TOXINS FROM CYANOBACTERIA AND THEIR POTENTIAL IMPACT ON WATER QUALITY OF LAKE KINNERET, ISRAEL

1998 ◽  
Vol 46 (2) ◽  
pp. 109-115 ◽  
Author(s):  
Assaf Sukenik ◽  
Claudia Rosin ◽  
Ram Porat ◽  
Benjamin Teltsch ◽  
Roni Banker ◽  
...  
Keyword(s):  
Water Quality ◽  
Natural Waters ◽  
Water Source ◽  
Lake Kinneret ◽  
Health Concern ◽  
General Description ◽  
Filamentous Cyanobacterium ◽  
Blue Green Algae ◽  
First Time

A number of different species of cyanobacteria (blue-green algae) produce toxins of several different types. Cyanobacterial Wooms present a serious health concern when they occur in water bodies that supply potable water. Lake Kinneret, the major water source in Israel, was characterized for many years by relatively stable phytoplankton populations which fluctuated with the seasons in a quite predictable manner. An exceptional bloom of the filamentous cyanobacteriumAphanizomenon ovalisporum, which produces hepatotoxin, was observed for the first time in Lake Kinneret during the fall of 1994. Cylindrospermopsin, a toxin produced byA. ovalisporum, was purified and chemically characterized. The potential implications of cylindrospermopsin-producingA. ovalisporumbloom in Lake Kinneret on water quality is discussed, together with a general description of cyanobacterial toxins and their occurrence in natural waters.

scholarly journals Ecological assessment of the Zaporizhzya (Dniprovsky) reservoir

2021 ◽  
Author(s):  
Y. V. Nikolenko ◽  
◽  
O. V. Fedonenko ◽  
Keyword(s):  
Water Quality ◽  
Environmental Assessment ◽  
Surface Water Quality ◽  
High Amplitude ◽  
Water Area ◽  
Water Bodies ◽  
Annual Data ◽  
Ecological State ◽  
Exposure Indicators

Environmental assessment of water is an integral part of monitoring water bodies. It provides information about water as a component of the aquatic ecosystem, the habitat of hydrobionts and an essential part of the natural environment, which is necessary for establishing environmental standards for water quality and adoption of measures to improve the ecological state of water bodies. Assessment of the quality of the ecological environment is an important parameter of sustainable development, necessary for the rational use of nature. Currently, the Zaporizhzhia (Dnipro) reservoir is exposed to increased anthropogenic impact, which affects water quality. The ecological state of the reservoir is deteriorating, and mass algal bloom is observed. The work aims to provide an integrated environmental assessment of water quality in different sites of the Zaporizhzhia reservoir. The study was conducted in 2019 at 5 sites along the course of the Zaporizke reservoir, which differ in hydrological and hydrochemical conditions: Samara Bay, Festivalnyi pier, Monastyrsky island, creek of the Mokra Sura river and the lower section of the reservoir (near Viyskove village), following generally accepted hydrobiological methods. The article calculates block indices and provides an environmental assessment of the water quality of the Zaporizhzhia reservoir according to the "Methodology for environmental assessment of surface water quality in the corresponding categories. The assessment of water quality by the criteria of contamination with salt composition components indicates that the water body condition is good at most of the studied points. The worst indicators were recorded in Samara Bay, where increased mineralization is observed for a long time. The trophic-saprobological block revealed to have the worst indicators and a high amplitude of index fluctuations. No significant deviations were observed in terms of the content of toxic and radiation exposure indicators throughout the entire studied water area, which makes it possible to assign water to the same class. It has been determined that the water quality of the Zaporizhzhia reservoir according to the average annual data is characterized as "good" in terms of the state and "clean, fairly clean" in terms of purity degree. However, during the study period, significant deviations from the average were observed, especially in the summer. There is a need for systematic monitoring of the reservoir, the establishment of annual dynamics, which will make it possible to determine the causes of deteriorating water quality and develop ways to address them.

scholarly journals Assessment of Water Quality by Bioindication of Algae and Cyanobacteria in the Peshawar Valley, Pakistan

2021 ◽  
Vol 22 (3) ◽  
Author(s):  
Izaz Khuram ◽  
Nadeem Ahmad ◽  
Cüneyt Nadir Solak ◽  
Sophia Barinova
Keyword(s):  
Water Quality ◽  
Industrial Effluents ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Nutrient Runoff ◽  
Biological Water ◽  
First Time ◽  
Biological Water Quality ◽  
Significant Factors

In purpose to assess the water quality in Peshawar Valley, the diversity of algae and cyanobacteria were studied in 41 sites during 2018-2019. A total of 361 species indicators of 7 Phyla were revealed. Algae and cyanobacteria in the studied sites preferred benthic and plankton-benthic lifestyle and mesotrophic waters. Indicators characterized water as moderate in temperature, medium oxygenated, low alkaline, and low saline. Algae and cyanobacteria inhabited medium-polluted and good water quality of Classes 2-3. The statistical maps were constructed for the first time to visualize the spatial distribution of diverse environmental and biological water quality variables and their relationship. The statistical maps and CCA revealed Water Temperature, Electrical Conductivity, Salinity, and Total Dissolved Solids as significant factors influenced freshwater algal and cyanobacteria communities. Statistical maps reflected an increase of dissolved substances from the foothills to the Kabul and Indus rivers' confluence. Acidification was revealed in the northeast of the valley. The bioindication results allowed us to propose that the algae and cyanobacteria communities were influenced by nutrient runoff from the surrounding foothills, agriculture, domestic and industrial effluents. The bioindication method combined with statistics can be recommended as a productive instrument for future water quality monitoring in the Peshawar Valley.

scholarly journals Fuzzy model for determination and assessment of groundwater quality in the city of Zrenjanin, Serbia

2015 ◽  
Vol 69 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Jelena Kiurski-Milosevic ◽  
Mirjana Vojinovic-Miloradov ◽  
Nebojsa Ralevic
Keyword(s):  
Water Quality ◽  
Fuzzy Logic ◽  
Arsenic Concentration ◽  
Fuzzy Model ◽  
Quality Parameters ◽  
Degree Of Certainty ◽  
Carcinogenic Effects ◽  
First Time ◽  
The City

The application of the fuzzy logic for determination and assessment of the chemical quality of groundwater for drinking purposes in the city of Zrenjanin is presented. The degree of certainty and uncertainties are one of the problems in the most commonly used methods for assessing the water quality. Fuzzy logic can successfully handle these problems. Evaluation of fuzzy model was carried out on the samples from two representative wells that are located at depths of two aquifers from which water is taken to supply the population as drinking water. The samples were analyzed on 8 different chemical water quality parameters. In the research arsenic concentration (As3+, As5+) is considered as the dominant parameter due to its suspecting carcinogenic effects on human health. This type of research is for the first time conducted in the city of Zrenjanin, middle Banat region.

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