scholarly journals Assessing relationship of degradation of coastal zones and phytoplankton species structure of Lake Uvildy and Lake Turgoyak (South Ural, Russia)

2021 ◽  
Vol 958 (1) ◽  
pp. 012002
Author(s):  
A Kostryukova ◽  
I Mashkova ◽  
S Belov ◽  
E Shchelkanova ◽  
V Trofimenko ◽  
...  
Keyword(s):  
Species Diversity ◽  
Green Algae ◽  
The State ◽  
Oligotrophic Lake ◽  
Water Bodies ◽  
Current Paper ◽  
Species Structure ◽  
Phytoplankton Species ◽  
Coastal Zones ◽  
Degree Of Regression

Abstract The current paper aims at analyzing the species structure of the phytoplankton community of two reservoirs on the territory of South Ural. The given water bodies are of different trophicity, namely, oligotrophic Lake Turgoyak and oligomesotrophic Lake Uvildy. Both lakes, being natural monuments, are subject to intensive recreational use. A large flow of tourists is a serious problem for the ecological state of the water bodies coastal areas. Also, tourist activities can affect the state of aquatic biocenoses. In this work, the degree of recreational degression of the selected study sites was assessed. The analysis was carried out according to the state of landscapes, vegetation and trampledness of the surveyed area. Based upon the research the current paper reveals spatial patterns in the distribution of recreational load on the coastal geosystems and the level of anthropogenic transformation of the territory. Mainly due to the high density of recreational centres and camping areas, the coastal area is characterized by a high degree of regression. Some signs allow forecasting changes in the species composition of phytoplankton communities and the trophic status of the lakes depending on the degradation of the coastal zones. Diatoms (Bacillariophyta) have been dominant in plankton phytocoenosis of Turgoyak and Uvildy. At the same time, in the oligomesotrophic lake (Uvildy), the number of diatom species is significantly reduced in areas with a higher degree of regression. Thus, diatoms are sensitive indicators of anthropogenic impact on aquatic ecosystems. Green and blue-green algae biodiversity has grown in the water body. However, no relationship was found between their species diversity and the level regression. But the following tendency is observed for the oligotrophic Lake Turgoyak. The species diversity of green algae grows with an increase in the degression degree. To forecast the further state of the studied water bodies, the revealed patterns in the change of the phytoplankton species structure depending on the degradation level of the coastal territories can be used as eutrophication signs.

scholarly journals Short Communication: Assessing phytoplankton species structure in trophically different water bodies of South Ural, Russia

2021 ◽  
Vol 22 (8) ◽  
Author(s):  
Anastasiya M. Kostryukova ◽  
IRINA MASHKOVA ◽  
SERGEY BELOV ◽  
ELENA SHCHELKANOVA ◽  
VIKTOR TROFIMENKO
Keyword(s):  
Anthropogenic Impact ◽  
Short Communication ◽  
Oligotrophic Lake ◽  
Water Bodies ◽  
Species Structure ◽  
Phytoplankton Species ◽  
Blue Green Algae ◽  
Phytoplankton Communities ◽  
Ilmen State Reserve ◽  
Species Similarity

Abstract. Kostryukova A, Mashkova I, Belov S, Shchelkanova E, Trofimenko V. 2021. Short Communication: Assessing phytoplankton species structure in trophically different water bodies of South Ural, Russia. Biodiversitas 22: 3530-3538. The study aims to analyze the species structure of the phytoplankton communities of four water bodies in South Ural (Lakes-Turgoyak, Uvildy, Ilmenskoe and Shershnevskoe reservoir). These water bodies are characterized by different trophic states and levels of anthropogenic impact. Lake Turgoyak is oligotrophic; Lake Uvildy is oligomesotrophic. Both water bodies are protected areas and natural monuments. But tourism and recreation are not prohibited on their territories. The mesoeutrophic Lake Ilmenskoe is partially located within the Ilmen State Reserve, and it experiences less anthropogenic impact. The eutrophic Shershnevskoe reservoir is located within the boundaries of the city of Chelyabinsk. It is used as a source of drinking water. Cyanobacteria was the dominant division in the eutrophic Shershnevskoe reservoir. Bacillariophyta dominated in the plankton communities in oligotrophic Lake Turgoyak and oligomesotrophic Lake Uvildy. Green and blue-green algae biodiversity increased in the oligomesotrophic Lake Uvildy. For the mesoeutrophic Lake Ilmenskoe, diatom algae are dominant, but a higher proportion of Chlorophyta (especially Cyanobacteria) was revealed. Species similarity among phytoplankton communities in the given lakes was studied through cluster analysis based on the Sorensen-Czekanowski coefficient. The higher level of similarity between plankton species compositions could be explained by their locality rather than their trophic status.

scholarly journals ZOOINDICATION OF WATER BODIES WITHIN PETROLEUM INDUSTRIAL TERRITORIES OF THE BOLSHEZEMELSKAYA TUNDRA

2021 ◽  
pp. 83-92
Author(s):  
T. Shikhova ◽  
E. Scopin ◽  
R. Bolshakov
Keyword(s):  
Species Diversity ◽  
River Basin ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
The State ◽  
Water Bodies ◽  
Large Lakes ◽  
Quality Of Water ◽  
State Of Water

Intensive development of the oil and gas industry and accidents on oil pipelines become the reason of the environmental tension in the Pechora River basin (Nenets Autonomous District). Data on changes in water quality in five lakes and a small watercourse in the territory of oil fields of the Bolshezemelskaya tundra are presented. The bioindication indices (Berger-Parker (D), Shannon biodiversity (H '), Woodiwiss (W), Pantle-Buck (S), Balushkina (Kch)) were applied. The assessment of the state of water bodies in the Kolva River Basin (large lakes - Kolvaty and Nercheity), in the Laya River Basin (shallow lakes - Krugloye, Bezymyannoe 1, Bezymyannoe 2, stream) was done. The 28 samples of zoobenthos was processed by the standard method in July 2012 and 2019. A low diversity of benthic invertebrates was revealed for 5–20 taxa of the rank of families and orders. During the considered period, the changes have occurred in the structure and composition of the zoobenthos of water bodies. In 2019, the species diversity decreased in Kolvaty Lake (H'<2). There are no species of the crustacean complex (Monoporeia affinis, Mesocyclops leuckarti, Heterocope borealis) and larvae of Trichoptera. Only Sphaeriidae and Chironomidae with a predominance of Psectrocladius psilopterus (D = 55%) were recorded. The species diversity in Nercheity Lake increased (H'> 2) with a change in the dominant taxa: the larvae of the chironomids Ablabesmyia monilis (D = 44%) were found in 2012, the lower crustaceans (D = 47–51%) - in 2019. However, according to the totality of hydrobiological indicators, the quality of water in the lakes of the Kolva River Basin in 2019 compared to 2012 did not change significantly. The quality of water in the Krugloye and Bezymyannoe 1, Bezymyannoe 2 lakes (the Laya River Basin) has improved that is confirmed by a significant increase of species diversity. The most characteristic groups of benthic communities in these lakes are lower crustaceans (Cladocera, Copepoda, Ostracoda) and Chironomidae. The indicators of clean waters are o-β-mesosaprobic species Cladocera, Copepoda Heterocope appendiculata, Heterocope borealis (in the oligotrophic lakes), caddisfly Limnephilus stigma (in the Krugloe Lake), rotifer Polyarthra euryptera (in the Bezymyannoe 2 Lake), mayfly larvae Centroptilum luteolum. More resistant to organic pollution Copepoda began to prevail in abundance and diversity in Bezymyannoe 1 and Bezymyannoe 2 lakes, with a decrease in the taxonomic composition of Cladocera, which indicates the eutrophication of these water bodies. In most lakes, the water corresponds to the III quality class ("moderate pollution"), but in the Kolvaty lake and in the Bezymyanny stream (the Laya River basin) was recorded the biogenic pollution. Totally, insignificant taxonomic changes in zoobenthos structure took place in the lakes and the state of water bodies of the surveyed tundra remains relatively stable.

scholarly journals SPECIES DIVERSITY AND RICHNESS INDICES OF PHYTOPLANKTON SPECIES IN ANCHAR LAKE OF KASHMIR-INDIA

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Muzamil Bashir ◽  
Sheema Zaffar ◽  
Javid Ahmad Malik ◽  
Mohammad Farooq Mir
Keyword(s):  
Species Diversity ◽  
Aquatic Ecosystem ◽  
Environmental Changes ◽  
Aquatic Habitat ◽  
Water Bodies ◽  
Cumulative Effects ◽  
Lake Ecosystem ◽  
Phytoplankton Species ◽  
Ecological State ◽  
State Of Water

The most significant biotic constituent in a lake ecosystem is represented by phytoplankton in their diverse forms. phytoplankton because of their capacity to integrate environmental changes over periods of a few years, and reflect the cumulative effects of successive disturbances, are considered excellent biomass ecological state of water bodies Biodiversity to the aquatic ecosystem is quite varied starting from plankton (phytoplankton and zooplankton) to higher vertebrates like fishes. Study of plankton (phytoplankton and zooplankton) diversity and their ecology greatly contribute to an understanding of the basic nature and general economy of an aquatic habitat. In the present study overall, six broad groups of phytoplankton were observed during the present study, which include Bacillariophyceae, Chlorophyceae, Cyanophyceae, Euglenophyceae, Dynophyceae and Cryptoceae

scholarly journals Flagellate green algae from four water bodies in the state of Rio de Janeiro, Southeast Brazil

Hoehnea ◽  
2008 ◽  
Vol 35 (3) ◽  
pp. 435-468 ◽  
Author(s):  
Mariângela Menezes ◽  
Carlos Eduardo de Mattos Bicudo
Keyword(s):  
Green Algae ◽  
Rio De Janeiro ◽  
Morphological Analysis ◽  
The State ◽  
Water Bodies ◽  
New Combination ◽  
Floristic Survey ◽  
Southeast Brazil ◽  
First Time ◽  
Janeiro State

Floristic survey of flagellate green algae (Chlorophyceae and Prasinophyceae) from four water bodies in the state of Rio de Janeiro, southeast Brazil. Samples were collected bimonthly from September 1988 to August 1991. Thirty-five taxa of which 31 in Chlorophyceae (24 Chlamydomonadales and seven Volvocales) and four in Prasinophyceae (Polyblepharidales) were identified. Twenty-three taxa are new records for Brazil and 31 are registered for the first time for Rio de Janeiro State. On basis of cell shape, location of the nucleus and degree of longitudinal striations on the chloroplast surface a new combination, Vitreochlamys lefevrei (Bourr.) Menezes & C. Bicudo, is proposed. Integrating studies among morphological analysis on natural/cultured material and characterizing of reproduction/life cycle as well the correlating between the occurrence of the species and environmental conditions are needed in order to better knowledge the degree of phenotypic plasticity within the members of the flagellate green algae in the country.

scholarly journals Epilithic lichen cover in assessing the quality of the coastal water environment in Karelia

2021 ◽  
Vol 20 (1) ◽  
pp. 409-413
Author(s):  
A. V. Sonina
Keyword(s):  
Species Diversity ◽  
Coastal Water ◽  
Water Environment ◽  
The State ◽  
Lichen Species ◽  
Water Bodies ◽  
Phosphorus Compounds ◽  
Lake Ladoga ◽  
Lichen Cover

The paper summarizes the data obtained by analyzing the reaction of the coastal epilithic lichen cover tothe chemical parameters of water in reservoirs of different types and uses. The study was carried out on the shores of freshwater bodies (Lake Onega, Lake Ladoga, Lososinka, Suna rivers) with different anthropogenic pressures in the Republicof Karelia. At each place of study, the lichen cover was described at the survey sites (frame 10 x 20 cm) along the transectand water samples were taken for chemical analysis. The aim of the work is to identify indicators of the coastal epilithic lichen cover to indicate the quality of the aquatic environment and assess the state of coastal ecosystems. The lichen flora ofthe surveyed coasts of fresh water bodies has 53 species, the highest species diversity of lichens is characterized by placeswithout obvious sources of pollution – the Kivach reserve (29 species), the shores of Lake Ladoga (27 species) and the Botanical Garden of PetrSU (16 species), and in urban conditions ( Petrozavodsk), a large settlement (Yanishpole) and nearthe pulp and paper industry (Kondopoga), the number of lichen species is much lower (8, 5 and 4). Regression analysisshowed the dependence of the number of lichen species on the registration site on the concentration of phosphorus compounds in water (p < 0.05). A tendency to a decrease in species diversity and a decrease in the total coverage of lichens withan increase in nitrogenous compounds in water was noted. This made it possible to propose the epilithic lichen cover as anobject-indicator of the state of the coastal water environment under conditions of anthropogenic pollution of water bodies.

ON THE ISSUE OF THE SPREAD OF AEROMONAS BACTERIA IN THE ENVIRONMENT AND CLINICAL MATERIAL

2018 ◽  
pp. 54-57
Author(s):  
L.V. Kataeva ◽  
T.F. Stepanova ◽  
O.V. Posoyuznykh ◽  
V.V. Tashlanova ◽  
N.F. Karpukhina ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Species Diversity ◽  
Food Products ◽  
Water Bodies ◽  
Clinical Material ◽  
Seasonal Fluctuations ◽  
Infectious Process ◽  
Biological Safety ◽  
Resistance To Antibiotics ◽  
Environmental Objects

The analysis of cases of detection of bacteria of the genus Aeromonas in clinical material from various loci of patients of medical organizations was carried out. Their species diversity, isolation in monoculture and associations, resistance to antibiotics and spring-autumn rises indicate the etiological significance of these microorganisms in the infectious process. To improve the biological safety of aquatic biotopes, it is important to study their microbiocenosis, in particular, the circulation of bacteria of the genus Aeromonas, in order to obtain information on pathogenic properties, antibiotic resistance, and seasonal fluctuations. To prevent the spread of Aeromonas infections, it is necessary to carry out sanitary and bacteriological studies of water bodies, environmental objects and food products.

The state of soil microbiotes during sunflower growing with an herbicide of imidazolinone group

Helia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Natalia Kostyuchenko ◽  
Viktor Lyakh ◽  
Anatoliy Soroka
Keyword(s):  
Species Diversity ◽  
Rhizosphere Soil ◽  
Root Zone ◽  
General Trend ◽  
The State ◽  
Trophic Groups ◽  
Herbicide Application ◽  
Fold Reduction ◽  
Specific Species ◽  
Number Of Bacteria

Abstract The effects of various concentrations of herbicide Euro-Lightning Plus on the state of microbiota in the root zone of sunflower have been studied. Soil of plant rhizosphere and interrow soil after treatment with the herbicide at the doses of 1.2 and 2.5 l/ha were taken for the analysis at the end of sunflower growing season. Rhizosphere soil without herbicide application was used as a control. The herbicide was applied at the stage of 2–4 true leaves. The total number of bacteria in the rhizosphere of control plants was 12.82 million CFU/g of soil while in the rhizosphere and in the interrow soil after herbicide treatment with a dose of 2.5 l/ha it decreased by 1.4–1.5 times. A general trend of decline in number of the basic ecological and trophic groups of bacterial microorganisms with the increase in a dose of herbicide was established. Microbiological coefficients that reflect the functional activity of the microflora indicate changes in its biological activity under the influence of the herbicide Euro-Lightning Plus, which leads to deterioration in the agroecological state of the studied soils. It was also found that herbicide application resulted in a rearrangement of micromycete complexes in the root zone of sunflower which led to a two-fold reduction, compared to the control, of mycobiota species diversity and the formation of a specific species composition of mycocenoses. A greater genus and species diversity of fungi of the microflora in the rhizosphere of control plants, in comparison with the herbicide-treated soil, was revealed. A reduction in species diversity of the genus Penicillium from six species in the control to 1–2 species in the rhizosphere of experimental sunflower plants as well as the absence of rare saprophytic fungi species from the genera Acremonium, Verticillium, Trichoderma and Paecilomyces were noted.

Transport time scales as physical descriptors to characterize heavily modified water bodies near ports in coastal zones

2014 ◽  
Vol 136 ◽  
pp. 76-84 ◽  
Author(s):  
Aina G. Gómez ◽  
Javier F. Bárcena ◽  
José A. Juanes ◽  
Bárbara Ondiviela ◽  
María L. Sámano
Keyword(s):  
Time Scales ◽  
Water Bodies ◽  
Coastal Zones ◽  
Transport Time ◽  
Heavily Modified Water Bodies
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