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  • 1
    Online Resource
    Online Resource
    The Role of Planktonic Algae in the Ecological Assessment of Storage-Reservoirs of the ILI-Balkhash Basin
    Walter de Gruyter GmbH ; 2018
    In:  Transylvanian Review of Systematical and Ecological Research Vol. 20, No. 2 ( 2018-2-1), p. 1-14
    Details
    In: Transylvanian Review of Systematical and Ecological Research, Walter de Gruyter GmbH, Vol. 20, No. 2 ( 2018-2-1), p. 1-14
    Abstract: The largest wastewater treatment systems include Sorbulak and Kurty reservoirs, and the small storage ponds were studied in the summer of 2017 and characterized mainly by organic pollution. Phytoplankton communities were represented by species tolerant of organic and toxic pollution. Cyanobacteria dominated in the reservoirs, and dinophyte algae were only in the Kurty Reservoir. According to the results of CCA analysis, only Cr and certain nutrients had a significant effect on the abundance of algae. A statistically positive significant association between the Shannon index and the average algal cell mass was established. The results obtained are a particular example reflecting the non-linearity of changes in plankton communities in the gradient of nutrient loading and eutrophication of aquatic ecosystems.
    Type of Medium: Online Resource
    ISSN: 2344-3219
    URL: Article
    DOI: 10.2478/trser-2018-0008
    Language: English
    Publisher: Walter de Gruyter GmbH
    Publication Date: 2018
    detail.hit.zdb_id: 2628169-7
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  • 2
    Online Resource
    Online Resource
    Planktonic Invertebrates in the Assessment of Long-Term Change in Water Quality of the Sorbulak Wastewater Disposal System (Kazakhstan)
    MDPI AG ; 2020
    In:  Water Vol. 12, No. 12 ( 2020-12-04), p. 3409-
    Details
    In: Water, MDPI AG, Vol. 12, No. 12 ( 2020-12-04), p. 3409-
    Abstract: The multicomponent composition of wastewater makes it challenging to assess its quality objectively, but the last one is a prerequisite for the safe re-use of wastewater. The solution to this problem should be aimed at finding criteria that make it possible to increase the objectivity of assessing the water quality of reservoirs with multicomponent pollution. This work analyzes the water quality of the Sorbulak wastewater disposal system in the summer of 2017, based on chemical variables and zooplankton structure and assess the long-term changes in the water quality of Sorbulak. According to the Kruskal–Wallis test, in 2017, the differences between the studied water bodies in the content of nutrients and heavy metals were mostly insignificant. From 2000–2002 to 2017, nitrate, nitrite nitrogen, and heavy metals in Sorbulak significantly decreased. Zooplankton communities consisted of a relatively small number of eurybiontic species resistant to environmental factors. The variability of the quantitative variables of zooplankton was associated with the nutrients. Males dominated the population of the cyclopoid copepods Acanthocyclops trajani. In 2000–2002 individuals with morphological anomalies were found in cyclopoid copepods populations, but were absent in 2017. The appearance of individuals with morphological anomalies was associated with copper or lead. The chemical data and structure of zooplankton communities indicated that the toxic pollution of Sorbulak decreased by 2017 compared to 2000–2002. Our results demonstrate that the structural variables of zooplankton communities could be successfully used to assess the water quality of water bodies with mixed pollution. We recommend using not only the traditional set of biological variables (abundance, biomass, diversity indices, and the average mass of an individual), but also data on the structure of species dominance, the sex structure of copepod populations, and the presence of individuals with morphological anomalies for monitoring of water bodies with mixed pollution.
    Type of Medium: Online Resource
    ISSN: 2073-4441
    URL: Article
    DOI: 10.3390/w12123409
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2521238-2
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  • 3
    Online Resource
    Online Resource
    Assessment of water quality condition and spatiotemporal patterns in selected wetlands of Punjab, India
    Springer Science and Business Media LLC ; 2022
    In:  Environmental Science and Pollution Research Vol. 29, No. 2 ( 2022-01), p. 2493-2509
    Details
    In: Environmental Science and Pollution Research, Springer Science and Business Media LLC, Vol. 29, No. 2 ( 2022-01), p. 2493-2509
    Type of Medium: Online Resource
    ISSN: 0944-1344 , 1614-7499
    URL: Article
    DOI: 10.1007/s11356-021-15590-y
    RVK:
    AR 10100
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 1178791-0
    detail.hit.zdb_id: 2014192-0
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  • 4
    Online Resource
    Online Resource
    The Role of Aquatic Refuge Habitats for Fish, and Threats in the Context of Climate Change and Human Impact, during Seasonal Hydrological Drought in the Saxon Villages Area (Transylvania, Romania)
    MDPI AG ; 2021
    In:  Atmosphere Vol. 12, No. 9 ( 2021-09-16), p. 1209-
    Details
    In: Atmosphere, MDPI AG, Vol. 12, No. 9 ( 2021-09-16), p. 1209-
    Abstract: In spite of the obvious climate changes effects on the Carpathian Basin hydrographic nets fish fauna, studies on their potential refuge habitats in drought periods are scarce. Multiannual (2016–2021) research of fish in some streams located in the Saxon Villages area during hydrological drought periods identified, mapped, and revealed the refuge aquatic habitats presence, management needs, and importance for fish diversity and abundance for small rivers. The impact of increasing global temperature and other human activities induced hydrologic net and habitats alteration, decreased the refuge habitats needed by freshwater fish, diminished the fish abundance, and influenced the spatial and temporal variation in fish assemblage structure in the studied area. The sites more than one meter in depth in the studied lotic system were inventoried and all 500 m of these lotic systems were also checked to see what species and how many individuals were present, and if there is was difference in their abundance between refuge and non-refuge 500 m sectors. The scarce number of these refuges due to relatively high soil erosion and clogging in those basins and the cumulative effects of other human types of impact induced a high degree of pressure on the fish fauna. Overall, it reduced the role of these lotic systems as a refuge and for reproduction for the fish of downstream Târnava Mare River, into which all of them flow. Management elements were proposed to maintain and improve these refuges’ ecological support capacity.
    Type of Medium: Online Resource
    ISSN: 2073-4433
    URL: Article
    DOI: 10.3390/atmos12091209
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2605928-9
    SSG: 23
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  • 5
    Online Resource
    Online Resource
    Phytoplankton in the Ecological Assessment of the Mining Facilities Influence on the Anabar River in the Permafrost Zone of the Arctic, Eastern Siberia, Russia
    MDPI AG ; 2023
    In:  Land Vol. 12, No. 9 ( 2023-09-13), p. 1775-
    Details
    In: Land, MDPI AG, Vol. 12, No. 9 ( 2023-09-13), p. 1775-
    Abstract: In modern conditions of climate change and increased anthropogenic pressure on aquatic ecosystems, the study of the diversity of organisms in the Arctic has become a top priority. Our study continues a series of studies on the biodiversity of Arctic rivers. Using innovative methods, such as ecological mapping, statistics, and bioindication, we identify environmental factors that influence phytoplankton diversity in the river basin under study. For the Anabar Arctic River, an increase in the diversity of phytoplankton was found to the north towards the mouth of the river, which is associated with an increase in turbidity from industrial discharges. A weak effect of organic pollution and toxic effects associated with existing settlements have been identified, but it has been established that natural processes of self-purification take place in the studied Arctic River. Among 210 species of phytoplankton, an increase in the diversity of chrysophytes in the northern direction was revealed, consistent with the intensification of severe Arctic climatic conditions. Since the study region is characterized by increased diamond mining, we recommend continuing to monitor phytoplankton, track changes in the Anabar River ecosystem, and expand such observations to other Arctic rivers.
    Type of Medium: Online Resource
    ISSN: 2073-445X
    URL: Article
    DOI: 10.3390/land12091775
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2682955-1
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  • 6
    Online Resource
    Online Resource
    Assessment of River-Sea Interaction in the Danube Nearshore Area (Ukraine) by Bioindicators and Statistical Mapping
    MDPI AG ; 2021
    In:  Land Vol. 10, No. 3 ( 2021-03-18), p. 310-
    Details
    In: Land, MDPI AG, Vol. 10, No. 3 ( 2021-03-18), p. 310-
    Abstract: There is a lack of understanding of the main drivers that form the picture of biological communities of transitional waters in deltaic ecosystems under the influence of terrestrial sources. Analysis of hydrochemical parameters in relation to phytoplankton communities in the Ukrainian part of the Danube coastal zone (in August 2018) is the focus of current work. The goal was to identify patterns in the distribution of environmental parameters (salinity and nutrients) in the area of the shipping channel through the Bystry arm, as well as to assess the state of water quality. The ecological bioindicators approach using modern statistical methods, and ecological mapping shows sufficient achievements in interpreting the results. The indicators of salinity (mesohalobes) had better describe the character of the transportation of fresh riverine waters than salinity gradient. The composition of 35 indicator phytoplankton species corresponds to 3 and 4 water quality classes in the coastal zone. High N:P ratios showed an imbalance in the ecosystem as an indicator of production and destruction processes. Statistical maps of the indicator species distribution revealed the river current’s influence on the nearshore water mass. Ecological maps of surface and bottom variables show various environmental impacts resulting from dredging in the shipping channel and excavated soil dumping. Canonical correspondence analysis (CCA) and statistical maps revealed two pools of factors with oppositely directed effects on phytoplankton: salinity, on one hand, and nutrients, on the other. Miozoa and Chlorophyta have an opposite interaction with salinity and oxygen and can be ecosystem change indicators in further analysis
    Type of Medium: Online Resource
    ISSN: 2073-445X
    URL: Article
    DOI: 10.3390/land10030310
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2682955-1
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  • 7
    Online Resource
    Online Resource
    Freshwater green algal biofouling of boats in the Kabul River, Pakistan
    Uniwersytet Gdanski ; 2014
    In:  Oceanological and Hydrobiological Studies Vol. 43, No. 4 ( 2014-12-01), p. 329-336
    Details
    In: Oceanological and Hydrobiological Studies, Uniwersytet Gdanski, Vol. 43, No. 4 ( 2014-12-01), p. 329-336
    Abstract: Freshwater green algal biofouling of boats refers to the accrual of freshwater green algae on boats immersed in water. The current research focused on the morphological characteristics of the isolates, species ecology, and the physicochemical properties of the water at the sampling sites. Two localities, Haji Zai and Sardaryab, were sampled at the Kabul River in the district of Charsadda, Pakistan. Freshwater green algae causing biofouling were isolated from the boats. A total of three genera: Cladophora, Rhizoclonium, and Spirogyra with fifteen species belonging to the families Cladophoraceae and Zygnemataceae were observed. Statistical analysis reveals significant stimulation of green algal species in the boats’ fouled communities by increases in water temperature, conductivity, and Total Suspended Solids (TSS). The algal growth at the Haji Zai site is suppressed by TDS in autumn (Pearson −0.56) and is stimulated by water temperature in spring (Pearson 0.44). At the Sardaryab site, algae were stimulated in spring by pH of water (Pearson 0.61), and suppressed by Total Dissolved Solids (TDS) in autumn (Pearson −0.43). Statistical analysis indicates that pH, conductivity, and temperature are the main factors determining the algal biofouling in the Kabul River.
    Type of Medium: Online Resource
    ISSN: 1897-3191
    URL: Article
    DOI: 10.2478/s13545-014-0150-y
    Language: English
    Publisher: Uniwersytet Gdanski
    Publication Date: 2014
    detail.hit.zdb_id: 2241495-2
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  • 8
    Online Resource
    Online Resource
    Ecological assessment of water quality in the Kabul River, Pakistan, using statistical methods
    Uniwersytet Gdanski ; 2017
    In:  Oceanological and Hydrobiological Studies Vol. 46, No. 2 ( 2017-06-27), p. 140-153
    Details
    In: Oceanological and Hydrobiological Studies, Uniwersytet Gdanski, Vol. 46, No. 2 ( 2017-06-27), p. 140-153
    Abstract: We identified 209 species of algae and cyanobacteria at 4 sites in the Kabul River. Green algae, diatoms, and charophytes dominated in the river, which reflects regional features of agricultural activity. Species richness and algal abundance increased down the river. The Water Quality Index characterizes the quality of water down the river as medium to bad. The index of saprobity S reflects Class III water quality. The Water Ecosystem Sustainability Index (WESI) shows contamination with nutrients. According to the River Pollution Index (RPI), waters in the river have low alkalinity and low salinity, and are contaminated with nutrients. Pearson coefficients showed that water temperature plays a major role in the total species richness distribution (0.93*) and in the green algae distribution (0.89*), while cyanobacteria were stimulated also by water salinity (0.91*). Stepwise regression analysis indicated water temperature as the major regional factor that determines riverine algal diversity. Surface plots and Canonical Correspondence Analysis (CCA) showed that salinity, nitrates, temperature, and Biochemical Oxygen Demand (BOD) can be defined as major factors affecting algal diversity. Dendrites mark the upper site of the Warsak Dam as the source of the community species diversity. Bioindication methods can give relevant and stable results of water quality and self-purification assessment that can be employed to monitor the regional water quality.
    Type of Medium: Online Resource
    ISSN: 1897-3191
    URL: Article
    DOI: 10.1515/ohs-2017-0015
    Language: English
    Publisher: Uniwersytet Gdanski
    Publication Date: 2017
    detail.hit.zdb_id: 2241495-2
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  • 9
    Online Resource
    Online Resource
    The role of phytoplankton in the ecological assessment of the Southern Bug River middle reaches (Ukraine)
    Schweizerbart ; 2014
    In:  Fundamental and Applied Limnology Vol. 184, No. 4 ( 2014-07-01), p. 277-295
    Details
    In: Fundamental and Applied Limnology, Schweizerbart, Vol. 184, No. 4 ( 2014-07-01), p. 277-295
    Type of Medium: Online Resource
    ISSN: 1863-9135
    Uniform Title: The role of phytoplankton in the ecological assessment of the Southern Bug River middle reaches (Ukraine)
    URL: Article
    DOI: 10.1127/1863-9135/2014/0509
    Language: English , English
    Publisher: Schweizerbart
    Publication Date: 2014
    detail.hit.zdb_id: 2272559-3
    SSG: 12
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  • 10
    Online Resource
    Online Resource
    Effect of water quality on the spatial distribution of charophytes in the Peshawar Valley, Khyber Pakhtunkhwa, Pakistan
    Uniwersytet Gdanski ; 2021
    In:  Oceanological and Hydrobiological Studies Vol. 50, No. 4 ( 2021-12-01), p. 359-372
    Details
    In: Oceanological and Hydrobiological Studies, Uniwersytet Gdanski, Vol. 50, No. 4 ( 2021-12-01), p. 359-372
    Abstract: The presented research was conducted in 2018–2019 in the Peshawar Valley, Pakistan, to study for the first time the effect of water quality on the spatial distribution of charophytes. A total of six taxa of charophytes were found at 41 sites in the Peshawar Valley along the banks of seven rivers, 16 streams and two wetlands: Chara braunii C.C.Gmelin, C. connivens Salzmann ex A. Braun, C. contraria A. Braun ex Kützing, C. globularis Thuiller, C. vulgaris Linnaeus, and Nitellopsis obtusa (Desvaux) J. Groves. Chara vulgaris was the most abundant species, followed by C. globularis , and C. contraria . Water pH, electrical conductivity (EC), total dissolved solids (TDS), salinity and dissolved oxygen (DO) were within the permissible limits for Pakistan, while water temperature, oxidation reduction potential (ORP) and resistivity showed deviations. Canonical Correspondence Analysis (CCA) revealed that DO affected Chara vulgaris, pH and resistivity affected C. braunii, C. connivens and C. globularis , temperature and ORP affected C. contraria and Nitellopsis obtusa. Furthermore, CCA showed that TDS, EC, and salinity had no effect on the spatial distribution of Chara contraria , C. vulgaris and Nitellopsis obtusa . Chara contraria and Nitellopsis obtusa should be protected under VU (Vulnerable) status (IUCN) along with their habitats.
    Type of Medium: Online Resource
    ISSN: 1897-3191
    URL: Article
    DOI: 10.2478/oandhs-2021-0031
    Language: English
    Publisher: Uniwersytet Gdanski
    Publication Date: 2021
    detail.hit.zdb_id: 2241495-2
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