Ecological Mapping in Assessing the Impact of Environmental Factors on the Aquatic Ecosystem of the Arys River Basin, South Kazakhstan

Krupa, Elena; Barınova, Sophia; Romanova, Sophia

doi:10.3390/d11120239

Cited by 8 publications

(11 citation statements)

References 38 publications

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“…The same dynamic of increasing organic pollution was demonstrated in Amu Darya's right tributary that slightly smaller than Zarafshan-the Qashkadarya [80,81]. The pollution increasing down the river was revealed in similar length rivers in Iran, Kazakhstan, and Tajikistan [82][83][84][85], close to Uzbekistan. Bioindication of other variables dynamic that we revealed with bioindication methods has never been studied in the Zarafshan river course.…”

Section: Bioindicationmentioning

confidence: 65%

“…Simultaneously, the species richness and abundance increased down the river that, together with decreasing indices saprobity SLA, demonstrated the river ecosystem's self-purification. We constructed the ecological map that represents an important visualization instrument [33,83] recommended and applied in EU FWD [14,34] for the first time for Uzbekistan's rivers. The map in Figure 7 shows the fluctuation of water quality between Class 2 and 3 that correspond to the groups of variables revealed by CCA, which influenced diatom communities in the different parts of the studied watercourse of Zarafshan.…”

Section: Bioindicationmentioning

confidence: 99%

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Diatom Algae-Indicators of Water Quality in the Lower Zarafshan River, Uzbekistan

Barınova

Mamanazarova

2021

Water

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This work is the first, the purpose of which was a comprehensive assessment of the ecological state of the lower reaches of the Zarafshan River using bioindication of water quality by diatoms based on species’ ecological preferences, pollution indices, statistics, and ecological mapping. A total of 198 species and subspecies of diatoms were first identified from 195 samples collected four times a year at six sites in the lower reaches of the Zarafshan River in 2009–2015. The richest species were Cymbella, Navicula, and Nitzschia. Pleurosira laevis, resistant to salinity, was first found in aquatic habitats in Uzbekistan. Bioindicators of nine environmental variables make up 91% of the list. Distribution analysis of variables, pollution indices (SLA—SládečDek index of saprobity), and toxicity indices (WESI—Water Ecosystem State Index) show increases in salinity, turbidity, and decreases in organic pollution downstream. The source of acidification can be the Navoi region. We found an increase in the ability to self-purify with an increase in species richness and abundance of diatoms in the lower part of Zarafshan. Thus, the ecosystem of the studied part of the river successfully copes with the incoming pollution from the middle part of Zarafshan and demonstrates some stability and successful self-purification with a water quality class of 2–3. The first studied lower reaches of the ecosystem of the Zarafshan River using bioindicators, statistics, and ecological mapping show that the problem of aridization in Central Asia does not necessarily lead to degradation of the river ecosystem and an increase in pollution, but with rational water use can improve water quality and self-purification processes. Hence, diatoms can be good indicators of river water quality in a semi-arid region and reflect the climate and anthropogenic load change. We recommend that attention be paid to nutrient and turbidity management and to expand state monitoring points to the lower part of the river up to the Karakul region.

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Section: Bioindicationmentioning

confidence: 65%

Section: Bioindicationmentioning

confidence: 99%

Diatom Algae-Indicators of Water Quality in the Lower Zarafshan River, Uzbekistan

Barınova

Mamanazarova

2021

Water

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“…Several research papers have addressed and discussed environmental problems in Kazakhstan in detail in their research articles. Over the many years since Kazakhstan had gained its independence, numerous local Kazakhstani and international scholars have analyzed environmental problems in Kazakhstan from various angles, such as in relation to water pollution aspects [20][21][22][23][24][25]; waste management issues [26][27][28][29][30][31][32]; air pollution [33][34][35][36][37][38][39]; Aral Sea issue [40][41][42][43][44][45][46]; health effects by radioactive waste [47][48][49][50][51][52][53][54]; soil and land degradation issues [55][56][57][58][59][60][61]; and issues related to ecosystem and biodiversity [62][63][64][65]<...…”

Section: Environmental Issues In Kazakhstanmentioning

confidence: 99%

Analysis of new state documents on environmental awareness aspects in Kazakhstan

Kumar

2022

EJE

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Environmental awareness issues in Kazakhstan are one of the most undermined topics both among the public community and in terms of state rhetoric. In the context of official state documents, so far only two official environmental codes and national program called Zhasyl Kazakhstan were introduced in the country in 2021. While on the one hand the Environmental Code was introduced with the purpose to modernize, frame and enlist main legislative aspects on various sectors of environmental law in Kazakhstan, on the other hand the Zhasyl Kazakhstan Program has been implemented as a state program to address with numerous environmental projects various environmental issues ranging from air pollution to waste management as well as aspects related to ecological education and low environmental awareness matters. In this regard, the main goal of this paper is to analyze critically the main content of both of these documents with a particular focus on sections related to environmental awareness raising aspects. For that, this paper applied a subjective-based content analysis in order to identify interesting insights on regulatory legal aspects, future research streams, and uncovering of improved legislative frameworks in the context of environmental awareness issue. Apart from that, five open-ended questions were send out to the Ministry of Ecology, Geology and Natural Resources to obtain primary data on the state's view in regards to current previous, recent and future aspects of environmental awareness issue in the country.

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“…The benthic bioindicators (including algal biomass and periphyton assemblage data) could distinguish river bedforms impacted by wastewater effluent from those impacted by non-point source agricultural pollution. Krupa, Barinova, and Romanova (2019) presented the first characterization of the Arys River basin of South Kazakhstan using an ecological mapping approach, based on the spatial distributions of water chemistry variables and biological index of periphyton communities, including diatoms, green algae (Chlorophyta ANNUAL LITERATURE REVIEW and Charophyta), and cyanobacteria. The maps of chemical and biological data allowed the researchers to estimate the contribution of terrestrial sources to the total organic pollution of the river basin.…”

Section: Algal Ecologymentioning

confidence: 99%

Substratum‐associated microbiota

Furey

Lee

Clemans

2020

Water Environment Research

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Highlights of new, interesting, and emerging research findings on substratum-associated microbiota covered from a survey of 2019 literature from primarily freshwaters provide insight into research trends of interest to the Water Environment Federation and others interested in benthic, aquatic environments. Coverage of topics on bottom-associated or attached algae and cyanobacteria, though not comprehensive, includes new methods, taxa new-to-science, nutrient dynamics, auto-and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, and bloom-forming and harmful algae. Coverage of bacteria, also not comprehensive, focuses on the ecology of benthic biofilms and microbial communities, along with the ecology of microbes like Caulobacter crescentus, Rhodobacter, and other freshwater microbial species. Bacterial topics covered also include metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. Readers may use this literature review to learn about or renew their interest in the recent advances and discoveries regarding substratum-associated microbiota. © 2020 Water Environment Federation • Practitioner points • This review of literature from 2019 on substratum-associated microbiota presents highlights of findings on algae, cyanobacteria, and bacteria from primarily freshwaters. • Coverage of algae and cyanobacteria includes findings on new methods, taxa new to science, nutrient dynamics, auto-and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, bloomforming and harmful algae. • Coverage of bacteria includes findings on ecology of benthic biofilms and microbial communities, the ecology of microbes, metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. • Highlights of new, noteworthy and emerging topics build on those from 2018 and will be of relevance to the Water Environment Federation and others interested in benthic, aquatic environments

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Ecological Mapping in Assessing the Impact of Environmental Factors on the Aquatic Ecosystem of the Arys River Basin, South Kazakhstan

Cited by 8 publications

References 38 publications

Diatom Algae-Indicators of Water Quality in the Lower Zarafshan River, Uzbekistan

Diatom Algae-Indicators of Water Quality in the Lower Zarafshan River, Uzbekistan

Analysis of new state documents on environmental awareness aspects in Kazakhstan

Substratum‐associated microbiota

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