scholarly journals Taxonomic composition of bacterioplankton of large freshwater lakes of the Yeravninskaya depression

2021 ◽  
Vol 908 (1) ◽  
pp. 012002
Author(s):  
O P Dagurova ◽  
L P Kozyreva ◽  
S V Zaitseva ◽  
B V Tsydenova ◽  
S P Buryukhaev ◽  
...  
Keyword(s):  
Water Quality ◽  
Microbial Community ◽  
Anthropogenic Impact ◽  
Total Dissolved Solids ◽  
Taxonomic Composition ◽  
Anthropogenic Factors ◽  
Freshwater Lakes ◽  
Bacterial Phyla ◽  
Natural And Anthropogenic Factors ◽  
Number Of Bacteria

Abstract Bacterioplankton community taxonomic composition of four large freshwater lakes of the Yeravninskaya depression (Bolshoye Yeravnoye, Gunda, Isinga, and Sosnovoye) which have great fishery significance for the region has been studied. The microbial community consists in the main of bacterial phyla Gammaproteobacteria (22-74%), Actinobacteria (4-35%), Firmicutes (1.17-34.6%), Bacteroidetes (0.3-7%), Cyanobacteria (0.9-6.5%) and Planctomycetes (1.5-10.5%). Total dissolved solids and sulphates accounted for 57% of the variation in the microbial community distribution. At the genus level, Acinetobacter dominated (average 21.4-25.2%). Pseudomonas, Exiguobacterium, and Massilia were also widespread. Their predominance may indicate a possible change in the structure of the community caused by natural and anthropogenic factors. In lakes Isinga and Gunda, a large number of bacteria of the genus Klebsiella was observed, Staphylococcus and Streptococcus were detected. These features indicate insufficient water quality as a result of anthropogenic impact.

scholarly journals Anthropogenic and catchment characteristic signatures in the water quality of Swiss rivers: a quantitative assessment

2018 ◽  
Author(s):  
Martina Botter ◽  
Paolo Burlando ◽  
Simone Fatichi
Keyword(s):  
Water Quality ◽  
Anthropogenic Impacts ◽  
Stream Water ◽  
Anthropogenic Activities ◽  
Quality Data ◽  
Anthropogenic Factors ◽  
Water Quality Data ◽  
Natural And Anthropogenic Factors

Abstract. The hydrological and biogeochemical response of rivers carries information about solute sources, pathways, and transformations in the catchment. We investigate long-term water quality data of eleven Swiss catchments with the objective to discern the influence of catchment characteristics and anthropogenic activities on delivery of solutes in stream water. Magnitude, trends and seasonality of water quality samplings of different solutes are evaluated and compared across catchments. Subsequently, the empirical dependence between concentration and discharge is used to classify different solute behaviors. Although the influence of catchment geology, morphology and size is sometime visible on in-stream solute concentrations, anthropogenic impacts are much more evident. Solute variability is generally smaller than discharge variability. The majority of solutes shows dilution with increasing discharge, especially geogenic species, while sediment-related solutes (e.g. Total Phosphorous and Organic Carbon species) show higher concentrations with increasing discharge. Both natural and anthropogenic factors impact the biogeochemical response of streams and, while the majority of solutes show identifiable behaviors in individual catchments, only a minority of behaviors can be generalized across catchments that exhibit different natural, climatic and anthropogenic features.

scholarly journals Local determinants influencing stream water quality

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Aadil Hamid ◽  
Sami Ullah Bhat ◽  
Arshid Jehangir
Keyword(s):  
Water Quality ◽  
Multiple Scales ◽  
Stream Water ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Anthropogenic Factors ◽  
Special Role ◽  
Stream Water Quality ◽  
Environmental Pressures ◽  
Natural And Anthropogenic Factors

AbstractIt is important to have reliable information on various natural and anthropogenic factors responsible for influencing and shaping stream water quality parameters as long as water resource conservation and management planning are concerned from the local to global scale. Daunting environmental pressures at multiple scales makes this necessity more pronounced owing to the special role of stream ecosystems in providing regional services. Understanding how coupled effect of natural and anthropogenic factors controls stream water quality parameters and how the relationships change over space and time will help policy makers and resource managers to target appropriate scales at watershed level for the quality management of stream waters. This paper sums up the information on various natural and anthropocentric factors as major determinants responsible for conditioning and shaping stream water quality parameters and their simultaneous influence on biota and its use.

Influence of natural and anthropogenic factors on the water quality of the coastal waters around the South Andaman in the Bay of Bengal

2015 ◽  
Vol 78 (1) ◽  
pp. 309-331 ◽  
Author(s):  
Renjith VishnuRadhan ◽  
Divya David Thresyamma ◽  
Kamal Sarma ◽  
Grinson George ◽  
Prabhakar Shirodkar ◽  
...  
Keyword(s):  
Water Quality ◽  
Bay Of Bengal ◽  
Coastal Waters ◽  
Anthropogenic Factors ◽  
The South ◽  
South Andaman ◽  
Natural And Anthropogenic Factors

scholarly journals Freshwater microbial taxa as indicators of anthropogenic impact on the freshwater lakes of Buryatia

2021 ◽  
Vol 908 (1) ◽  
pp. 012003
Author(s):  
S V Zaitseva ◽  
O P Dagurova
Keyword(s):  
Water Quality ◽  
Anthropogenic Impact ◽  
Baikal Region ◽  
Environmental Gradients ◽  
Structural Features ◽  
Anthropogenic Pressure ◽  
Nutrient Loads ◽  
Freshwater Lakes ◽  
High Productivity ◽  
Water Quality Deterioration

Abstract Three large freshwater lakes located in the Baikal region (Gusinoye, Shchuchye, and Kotokel) with high touristic significance were studied. Increased anthropogenic pressure is one of the most important causes of water quality deterioration (in particular, high solute and nutrient loads, high productivity). The structural features of microbial communities associated with an increased anthropogenic load have been revealed in different environmental gradients. It was shown that the genera Rhodobacter, Polynucleobacter, and Luteolibacter preferred environments with a higher trophic level and are indicators of possible anthropogenic impact.

scholarly journals The Influence of anthropogenic factors on water quality in the Southern Bug River basin

2020 ◽  
Vol 101-102 (3-4) ◽  
pp. 41-51
Author(s):  
Maryna Shuliakova ◽  
Valeriy Mykhaylenko
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Water Resources ◽  
River Basin ◽  
Water Resources Management ◽  
Anthropogenic Impact ◽  
Chloride Ions ◽  
Anthropogenic Factors ◽  
Resources Management ◽  
Industrial Enterprises

The study depicts an anthropogenic impact on water quality in the Southern Bug river basin that provides water to about 8% of the population of Ukraine. The potential ecologically dangerous water bodies were identified for Khmelnytsky, Vinnytsia, Mykolayiv and Kirovograd regions. The cartographic data indicated water quality within the selected basin segments is presented. The quality of surface waters was assessed based on the water pollution index (IP). The multiplicity of Maximum Permissible Levels (MPL) for ammonium, sulphate and chloride ions together with the Biochemical Oxygen Demand (BOD5) were determined in water samples has been taken in observation points. The preconditions of the pollution problems and their scales were indicated. The list of enterprises whose activities have the greatest impact on the deterioration of water quality, the type of industries and the main water pollution sources are also highlighted. The economic mastering of the river basin is investigated. The basin has been inclined by anthropogenic impact within the last decades, leading to continuous water resource degradation. The holistic Driver-Pressure-State-Impact-Response (DPSIR) approach was applied to investigate the main causes and origins of anthropogenic pressures aiming at optimizing the measures of sustainable water resources management. The major driving forces that affect the Southern Bug river basin are non-safety industrial enterprises, intensive agriculture, and insufficient water resources management. The main pressures on water resources provided the unclean agricultural drains driving to water quality degradation. The recommended responses are based on the Water Framework Directive (WFD) 2000/60/EC and sum up to rationalization of water resources, an appropriate land use, municipal waste management and especially agriculture effluents. The proposed measures to optimize the water resources management in the Southern Bug River Basin will contribute to achievement of the objectives set by Goal 6 of the National Strategy for Sustainable Development SDG-2030.

Research paper. Factors That Attract Birds within the Area of the International Airport Craiova, Romania, and Certain Control Measures

2016 ◽  
Vol 59 (2) ◽  
pp. 235-240
Author(s):  
Mirela Sabina Ridiche ◽  
Tudor Ciprian Radu Pătruțoiu ◽  
Angela Petrescu
Keyword(s):  
Environmental Conditions ◽  
Anthropogenic Impact ◽  
Control Measures ◽  
Anthropogenic Factors ◽  
International Airport ◽  
Trophic Resources ◽  
Close Proximity ◽  
High Degree ◽  
Natural And Anthropogenic Factors ◽  
Made In

Abstract The present study renders the results of the observations made in the biotopes located within the perimeter of International Airport Craiova and its close proximity (0-3 km), during all the seasons between 2013 and 2014. During the research, we recorded a total of 58 species of birds, many of them showing a high degree of adaptability to the environmental conditions marked by an increased anthropogenic impact. Large-sized species that fly highly and the species characterized by a gregarious behaviour, represent a real threat to aircraft safety. The temporary or longer presence of birds in the area of the airport is due to the optimum living conditions generated by a series of natural and anthropogenic factors. Besides the enumeration and presentation of the way these factors act, we developed a series of measures that can reduce or counteract the area attractiveness to birds by eliminating or restricting to a minimum the trophic resources and opportunities for rest.

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