scholarly journals A community ordination of phytoplankton and ecological assessment of water quality of lakes in Wnhan

2007 ◽  
Vol 19 (1) ◽  
pp. 87-91
Author(s):  
WU Hongjuan ◽  
◽  
REN Jianghong ◽  
LU Yuanyuan
Keyword(s):  
Water Quality ◽  
Ecological Assessment ◽  
Community Ordination

Ecological assessment of water quality of the Songhua River upper reaches by algal communities

2016 ◽  
Vol 36 (3) ◽  
pp. 126-132 ◽  
Author(s):  
S. Barinova ◽  
Na Liu ◽  
Jiyang Ding ◽  
Yonglei An ◽  
Xueming Qin ◽  
...  
Keyword(s):  
Water Quality ◽  
Ecological Assessment ◽  
Algal Communities ◽  
Songhua River ◽  
The Songhua River

scholarly journals Environmental assessment of water quality in various lakes of the Volyn region, which is intensively used in recreation

2020 ◽  
Keyword(s):  
Water Quality ◽  
Environmental Assessment ◽  
Ecological Status ◽  
Ecological Assessment ◽  
Limiting Factors ◽  
Practical Significance ◽  
High Quality ◽  
Ecological Index ◽  
Quality Of Water

Introduction. Assessment of the ecological status of lakes is important for their conservation and protection. Many lakes are intensively used in recreation in Volyn Region. The development of the resort and recreational facilities requires significant additional volumes of fresh water to maintain the depth of the reservoirs in the bathing area, certain sanitary and temperature regimes of the reservoirs. The limiting factors are the sanitary and hygienic indicators of water. First and foremost, high quality of water should be provided for the organization of contact types of recreation (bathing, diving, water skiing, etc.). The purpose of article. The purpose of the article is ecological assessment of water quality in various lakes of Volyn Region, which are most intensively used in recreation. Methods. Research methods are expeditionary, methods of mathematical statistics and environmental assessment of water quality, which were carried out in accordance with the methodology for assessing the quality of surface water in the respective categories. During the preparation of the article, materials from their own expeditionary studies of the natural-economic state of the lakes were used, as well as the results of chemical analysis of the water composition conducted by the Water and Soil Monitoring Laboratory of the Regional Water Resources Office in Volyn Region and the Complex Laboratory for Observation of the Environmental Environmental Center. Results. The analysis of the qualitative indicators of the lakes Svitiaz, Velyke Zgoranske and Somyn showed the high quality of water in the lakes. For the period of 2015–2019, water quality was classified as „good” class II, by degree of cleanliness „clean”, by category as „very good”, by degree of cleanliness „clean” on all lakes. The value of IE for the Lake Velyke Zgoranske varied in the range of 1.81–2.44, in the range of 1.66–2.07 for the Lake Svitiaz, and in the range of 2.56–2.96 for the Lake Somyn. Index І2 (ecological and sanitary indicators) has the most influence on the magnitude of the ecological index of water quality. The scientific novelty lies in establishing block and integral indexes of ecological assessment of water quality, classes and categories of water quality of the most recreationally-developed lakes of Volyn Region, as well as in assessment of the dynamics of indicators of water quality of lakes during the years of 2015–19. Practical significance is defined with the opportunity of development of a set of measures for the rational use and protection of lakes.

scholarly journals Ecological assessment of water quality of Samotkan river in the area of polymetallic ores mining

Agrology ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 22-26
Author(s):  
M. M. Kharytonov ◽  
◽  
M. H. Babenko ◽  
S. A. Sytnyk ◽  
K. P. Maslikova ◽  
...  
Keyword(s):  
Water Quality ◽  
Ecological Assessment

scholarly journals ECOLOGICAL ASSESSMENT OF SURFACE WATER QUALITY OF ROSTAVYTSIA RIVER

2020 ◽  
pp. 86-92
Author(s):  
Pavlo Smilii ◽  
Mykhailo Melniychuk
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Indicators ◽  
Environmental Assessment ◽  
Surface Waters ◽  
Ecological Status ◽  
Surface Water Quality ◽  
Ecological Assessment ◽  
Salt Composition

Purpose – perform ecological assessment of the surface waters of the Rostavytsia river within the Zhytomyr region. Method. Environmental assessment of the surface water of the Rostavytsia river was carried out using the system of classification of standards for the assessment of surface water quality of Ukraine. On the basis of common environmental criteria, the methodology makes it possible to compare the quality of water at different sites of water bodies, in water bodies of different regions. The calculation of the ecological assessment of water quality was carried out within three blocks: block of salt composition (І1), block of trophic-saprobiological (ecological-sanitary) indicators (І2) and block of indicators of content of specific substances of toxic action (І3). The results are presented in the form of a combined environmental assessment based on the final conclusions of the three blocks and based on the calculation of the integrated environmental index (IE). Results. Omprehensive studies on changing the water quality of the Rostavytsia river were conducted within the Zhytomyr region during 2016-2017. The water quality of the river according to the final values of the integral indicators of water quality of the three blocks varies within the II and III quality classes. The total environmental indices (IE) for the mean and worst indices are 3,2 and 3,3 respectively. In general, the water quality along the main channel of the Rostavytsia river within the Zhytomyr region corresponds to the second class, 3 categories, 3 subcategories according to the average quality indicators and 3(4) subcategories by worst performance. The total values of the integral surface water quality indicators of the Rostavytsia river indicate their contamination by trophic-saprobiological components. Scientific novelty. For the first time, on the basis of analytical studies and stock materials, an ecological assessment of the surface waters of the Rostavytsia river within the Zhytomyr region was carried out by three blocks of indicators: salt composition, trophic-saprobiological indicators and specific toxic substances. The integral ecological index is determined. The trends of pollutants accumulation in the surface waters of the Rostavytsia river have been established. Practical significance. The conducted researches allowed to analyze and evaluate the ecological status of the surface waters of the Rostavytsia river within the Zhytomyr region, which will allow to establish ecological standards of water quality and on this basis to determine the main directions for improvement of water resources and to substantiate the system of recommendations aimed at improving the ecological status of the studied basin.

scholarly journals Ecological assessment of water quality in an urban river replenished with reclaimed water: the phytoplankton functional groups approach

2021 ◽  
Author(s):  
Liying Zhu ◽  
Yuanyuan Chen ◽  
Yawei Wang ◽  
Chunrong Wang ◽  
Yuansong Wei
Keyword(s):  
Water Quality ◽  
Reclaimed Water ◽  
Ecological Status ◽  
Ecological Assessment ◽  
Dry Season ◽  
Urban Rivers ◽  
Wet Season ◽  
The North ◽  
Phytoplankton Functional Groups

Abstract Comprehensive water quality assessment plays a vital role in decision making for the sustainable management of urban rivers, and thus the exploration of integrated ecological assessment methods for water quality has become a major requirement. This study assessed the water quality of the North Canal River on the basis of its ecological status using the phytoplankton functional groups (PFGs) approach. The river runs through the megacities of the Beijing-Tianjin-Hebei region in China, and is mainly replenished with reclaimed water. The results showed that the PFGs approach is much better for evaluating the water quality of urban rivers than the conventional physicochemical index method and phytoplankton diversity metrics, because the PFGs approach is more sensitive to the spatiotemporal variations in the water quality of urban rivers. The average Qr index, for ecological status estimation in rivers, based on the PFGs of the North Canal River was 3.30, indicating “good” water quality. In the dry season, the dominant PFG upstream was group D (Cyclotella spp.), whereas the major downstream PFGs had changed to group Y (Glenodinium spp., Cryptomonas ovata, and Cryptomonas erosa) and W1 (Euglena spp. and Gonium pectoral). While the dominant PFG throughout the river changed to TB: Melosira spp. in the wet season. The Qr at each site was one to two grades lower during the wet season than the dry season, indicating that water quality was worse in the wet than the dry season.

scholarly journals An Ecological Assessment for Water Quality of Some Water Bodies in Koysenjaq-Erbil, Iraq.

2018 ◽  
Vol 21 (2) ◽  
pp. 119-129
Author(s):  
Janan Jabbar Toma ◽  
◽  
Yahya Ahmad Shekha ◽  
Yadi Omar Mustafa Al-Barzingy ◽  
◽  
...  
Keyword(s):  
Water Quality ◽  
Ecological Assessment ◽  
Water Bodies

scholarly journals ENVIRONMENTAL ASSESSMENT OF SURFACE WATER QUALITY ZHYTOMYR POLESIE

2021 ◽  
pp. 41-48
Author(s):  
P. Smilii ◽  
I. Gopchak ◽  
T. Basiuk
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Ecological Assessment ◽  
Ecological Index ◽  
Ecological Criteria ◽  
Qualitative State ◽  
The Right ◽  
The City

The ecological assessment of the quality of surface water of the Dnipro basin (within Zhytomyr region) is carried out. In general, surface water of rivers of teter, rotten, Guiva, forest stone, Irsha, Human, Arpin, Rostavitsa and Kamyanka were investigated. The study was conducted according to systematic observations based on the ecological classification of the quality of surface water and estuates in Ukraine, which includes a set of hydrophysical, hydrochemical, hydrobiological and other indicators reflecting the peculiarities of components of aqueous ecosystems. On the basis of unified ecological criteria, the technique allows you to compare the water quality in separate areas of water objects, in water objects of different regions. The calculation of the ecological assessment of water quality was carried out within three blocks: a block of saline composition (I1), a block of troph-sanitary (ecological-sanitary) indicators (I2) and a block of indicators of specific substances of toxic action (I3). The results are presented in the form of a combined ecological assessment, based on the final conclusions of three blocks and is to calculate the integral ecological index (IE). The results of observations on the qualitative state of surface water in the Tetereva Basin, the right tributaries of the Dnieper “Good”, “clean” water (II class of quality) here are less than half (47%) of all observation points. Such a quality is the water of the rivers of Irsha, Guiva, rotten, varnia, teter. In 6% of cases, “satisfactory”, “contaminated” water of the quality of the quality (3,7 ≤ IE ≤5,4), namely: r. Teters, within the city of Zhytomyr, 200 m above the fall of the River Forest Kamyanka and River Forest Kamenka, within the city of Zhytomyr, 100 m above the fall in Teter. Waters of all other research points occupy an intermediate position between II and III of quality classes and are evaluated as “good”, “clean” and “satisfactory”, “contaminated”. The water of the pools Irpen and dew, represented by the rivers Irpin, Rostavitsa and Kamenka, are characterized by the second class of quality “good”, “clean”. Executed researches allowed to analyze and evaluate the ecological state of the rivers of the rivers of the Zhytomyr region within the Dnipro River basin, which will establish the environmental standards of water quality and to determine the basic areas for improving the state of water resources and substantiate the system of recommendations aimed at improving the environmental state of the basins under study in the boundary of the area.

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