scholarly journals Characteristic of phytoplankton and water quality assessment in the Amur River at Khabarovsk in the ice-free period of 2018–2019

2021 ◽  
Vol 201 (3) ◽  
pp. 640-661
Author(s):  
T. V. Nikulina ◽  
S. E. Kulbachnyi
Keyword(s):  
Water Quality ◽  
Water Quality Assessment ◽  
Main Channel ◽  
Species Number ◽  
Taxonomic Structure ◽  
Algal Flora ◽  
Amur River ◽  
Phytoplankton Communities ◽  
The Amur River ◽  
Total Species

Species composition and taxonomic structure of phytoplankton communities in the main channel of the Amur at Khabarovsk (Russia) were monitored from spring to autumn of 2018–2019. In total, 187 species, varieties and forms of algae and cyanobacteria were found belonged to 8 phyla (Cyanobacteria, Bacillariophyta, Charophyta, Chlorophyta, Heterokontophyta, Rhodophyta, Euglenozoa, and Miozoa) and 75 genera. Diatoms formed the basis of the algal flora (94.7 % of the total species number). Mass vegetations of the diatoms and charophytes were observed with dominance of Asterionella formosa, Aulacoseira islandica, A. ambigua, A. granulata var. granulata, A. granulata var. angustissima, Ulnaria ulna, Diatoma tenue, Nitzschia acicularis, Stephanodiscus sp., Tabellaria flocculosa, Hannaea arcus var. rectus, Melosira varians, Fragilaria capucina var. vaucheriae, F. crotonensis, and Mougeotia sp. ster. Total number and biomass of plankton algae and cyanobacteria varied in the ranges of 1.74–5724.39 million cells/L and 2.5–2648.5 mg/L in spring-summer and 0.07–0.62 million cells/L and 0.2–1.4 mg/L in autumn. The water quality was evaluated by Pantle-Buck method modified by Sládeček as the betamezosaprobic III class (slightly polluted).

scholarly journals First report on phytoplankton communities of Barishal City, Bangladesh

2020 ◽  
pp. 142-147
Author(s):  
Shaswati Chakraborty ◽  
Dipalok Karmaker ◽  
Subroto Kumar Das ◽  
Riyad Hossen
Keyword(s):  
Aquatic Ecosystems ◽  
Species Number ◽  
Aquatic Environments ◽  
Primary Producers ◽  
First Report ◽  
Biodiversity Indices ◽  
Phytoplankton Communities ◽  
Living Organisms ◽  
The City ◽  
Total Species

Phytoplanktons, also called microalgae, are microscopic photosynthetic living organisms that generally found in aquatic environments. Although they are considered as the most important primary producers and bioindicators of aquatic ecosystems, there was no previous report found for Barishal City about these tiny organisms. Consequently, the present study selected 10 freshwater reservoirs from the city to investigate phytoplankton communities and listed 110 taxa under 4 phyla, 7 classes, 18 orders, 24 families and 49 genera. The distribution of Chlorophytes was abundant relatively in terms of species number (45 taxa) followed by Euglenophytes, Chlorophytes and Cyanophytes in this area. Only Euglenaceae possessed one-third of the total species of this report. Among all stations, the highest number of taxa was recorded from station 2 and according to nine biodiversity indices, the station 2 and 9 showed comparatively good results. All of the recorded taxa were previously mentioned by different authors from Bangladesh.

scholarly journals Phytoplankton from Vam Co River in Southern Vietnam

2016 ◽  
Vol 5 (1) ◽  
pp. 113
Author(s):  
Thanh-Son Dao ◽  
Thi-Nhu-Phuong Bui
Keyword(s):  
Water Quality ◽  
Green Algae ◽  
Quality Evaluation ◽  
Nitrate Concentration ◽  
Inorganic Nitrogen ◽  
Environmental Parameters ◽  
Water Quality Assessment ◽  
Species Number ◽  
Dissolved Phosphorus ◽  
Southern Vietnam

<p class="emsd"><span lang="EN-GB">In this study we investigated the variation of phytoplankton and the water quality in Vam Co River, Southern Vietnam. Phytoplankton were bi-monthly monitored in 2011 at 12 sampling sites in the river. Some basic environmental parameters were also monitored including temperature, pH, turbidity, inorganic nitrogen and dissolved phosphorus. The phytoplankton biodiversity and Diatomeae indices were applied for environmental quality evaluation. The results showed that temperature </span><span lang="EN-GB">ranged from 28.7 – 31.9 </span><span lang="EN-GB">°C during the monitoring. The pH and turbidity were in between 3.9 – 7.0 and 2 – 64 NTU, respectively. The nitrate and ammonium concentrations were from 0.06 – 1.21 and 0.03 – 1.15 mg/L, respectively. The phosphate concentration was between 0.02 and 0.37 mg/L. </span><span lang="EN-GB">The environmental parameters were favorable for phytoplankton development. The phytoplankton analyses showed that there were 290 species of diatoms, green algae, golden algae, yellow algae, euglenoids, dinoflagellates and cyanobacteria of which green algae and diatoms were dominant in species number. </span><span lang="EN-GB">Phytoplankton density ranged from 920 – 383 600 individuals/L with the main dominant species of diatoms. The biodiversity index values during the monitoring were from 0.15 – 3.80 characterized for oligotrophic to eutrophic conditions whereas the Diatomeae index values were more than 0.2 indicating for the eutrophic characteristic of the aquatic environment. Besides, phytoplankton species number positively correlated with temperature but negatively correlated with nitrate concentration. Additionally, the biodiversity positively correlated with temperature and species number, but negatively correlated with nitrate and phytoplankton abundance. The results confirmed the advantage of using phytoplankton and their indices for environmental monitoring and water quality assessment.</span></p><p> </p>

scholarly journals Algae Diversity and Ecology during a Summer Assessment of Water Quality in the Abraham Lincoln Birthplace National Historical Park, USA

Diversity ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 206 ◽  
Author(s):  
Sophia Barinova ◽  
Thomas Smith
Keyword(s):  
Water Quality ◽  
Algal Species ◽  
Benthic Algae ◽  
Water Quality Assessment ◽  
Abraham Lincoln ◽  
Algal Flora ◽  
Diatom Algae ◽  
Class 1 ◽  
Red Algal ◽  
The Usa

There were 88 species of algae and cyanobacteria observed from seven sites in the Abraham Lincoln Birthplace National Historical Park (Hodgenville, Kentucky, USA). This was the first algal investigation study in the park. There were 21 samples collected, during the summer, on 16 July 2008. Algal flora, dominated by diatoms was represented by 54 species identified (61.4% of the total), 20 species of cyanobacteria, 11 green and two charophyte algal species, and one red algal species (22.7%, 12.5%, 2.2%, and 1.1%, respectively). Benthic diatoms dominated the aquatic system with 14 species of Navicula and 12 species of Nitzschia identified, which was 15.7% and 13.5% of the total, respectively. Species tended to be site specific and 78.6% of the species were only found in two or less sites. The bioindicator methods for water quality assessment were based on species autoecology. This method was used for the first time in the USA during this study. This demonstrated that benthic and planktonic-benthic algae preferred temperate temperatures, middle-oxygenated mesotrophic waters, low-to-middle enriched by chlorides. The waters were well oxygenated, sometimes saturated by sulfides, low-alkaline, low-to-middle organic enriched, and of class 1–3 water quality with high self-purification capacity. This is very important for habitat protection and cannot be easily accomplished strictly through chemical analysis. The diversity of diatom algae not only plays a major role in the formation of algal communities and their uniqueness, but diatom algae can be a good indicator of environmental assessments and change.

A review of the genus Brachysira in Ireland with the description of Brachysira praegeri and Brachysira conamarae, new raphid diatoms (Bacillariophyceae) from high status waterbodies

Phytotaxa ◽  
2017 ◽  
Vol 326 (1) ◽  
pp. 1 ◽  
Author(s):  
BRYAN KENNEDY ◽  
NORMAN ALLOTT
Keyword(s):  
Electron Microscopy ◽  
Water Quality ◽  
Scanning Electron Microscopy ◽  
New Records ◽  
Full Range ◽  
Water Quality Assessment ◽  
Algal Flora ◽  
High Status ◽  
Two New Species ◽  
Scanning Electron

The genus Brachysira is frequently encountered in the algal flora of oligotrophic freshwaters. In order to re-evaluate its diversity in Irish waters, light and scanning electron microscopy was used to examine populations at 209 river sites and in 85 lakes. The full range of morphological variation of all common and sometimes challenging Brachysira populations was investigated. The study revealed two new species, Brachysira praegeri sp. nov. and Brachysira conamarae sp. nov. and compared them to all closely related taxa. The study also recorded B. intermedia and B. neglectissima which are new records for Ireland. Further taxonomic clarification is required for a diatom resembling B. intermedia and the complex of taxa around the polymorphic B. microcephala. Individual Brachysira taxa differed with respect to their optima along an alkalinity-pH gradient, but the trophic requirements of all forms were comparable, suggesting that species may be merged for routine water quality assessment. Nevertheless, it is recommended that Brachysira morphotypes be enumerated separately until their taxonomy is more fully resolved and their significance for the biodiversity of epilithic communities has been clearly established.

scholarly journals Preliminary results of water quality assessment using phytoplankton and physicochemical approaches in the Huai River Basin, China

2017 ◽  
Vol 76 (9) ◽  
pp. 2554-2564 ◽  
Author(s):  
Hao Chen ◽  
Qi-ting Zuo ◽  
Yong-yong Zhang
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Quality Assessment ◽  
River Basin ◽  
Water Quality Assessment ◽  
Physicochemical Variables ◽  
Huai River Basin ◽  
Phytoplankton Communities ◽  
Huai River ◽  
The Huai River Basin

Abstract Water pollution has been a significant issue in the Huai River Basin (HRB) of China since the late 1970s. In July and December 2013, two field investigations were carried out at 10 sites along the main streams of the basin. The monitoring indices contained both physicochemical variables and the structure and composition of phytoplankton communities. The correlations between communities and physicochemical variables were analyzed using cluster analysis and redundancy analysis. Moreover, water quality was evaluated using the comprehensive nutrition state index (TLI) and Shannon-Wiener diversity index (H). Results indicated that more phytoplankton species were present in December than in July, but total density was less in December. Phytoplankton communities in the midstream of the Shaying River were affected by the same physicochemical factors throughout the year, but ammonia nitrogen and total phosphorus had the greatest influence on these sites in July and December, respectively. The water pollution status of the sampling sites was much greater in the Shaying River midstream than at other sites. TLI was more suitable than H for assessing water quality in the study area. These results provide valuable information for policy makers and stakeholders in water quality assessment, water ecosystem restoration, and sustainable basin management in the HRB.

scholarly journals Quantitative characteristics of zooplankton and zoobenthos communities and water quality in the Nercha River in the conditions of Transbaikal Region

2016 ◽  
Vol 320 (3) ◽  
pp. 304-315
Author(s):  
S.M. Kazykina ◽  
E.H. Zykova
Keyword(s):  
Water Quality ◽  
Species Diversity ◽  
Zooplankton Biomass ◽  
Transbaikal Region ◽  
Benthic Organisms ◽  
Benthic Species ◽  
Amur River ◽  
Quantitative Characteristics ◽  
The Amur River ◽  
Polluted Waters

Studies on species diversity of zooplankton and zoobenthos communities were carried out at the Nercha River at the middle and lower parts of its waterway. The Nercha River located in Transbaikal region, belongs to the upper Amur basin. The Nercha River is second order tributary of the Amur river. In plankton community we had found 42 species of invertebrates belonging to 27 genera, 15 families, 7 orders and 4 classes. In plankton rotifers were characterized by the highest species diversity and presented by 24 species and subspecies. Cladoceras were presented by 16 species and copepods – by 2 species. In benthic community we had found 133 taxa of different systematic level belonging to 6 classes: Nematoda, Arachnidae, Clitellata, Insecta, Gastropoda, Bivalvia. The total number of taxa were distributed among 35 families, 52 genera, 65 species. Amphibiotic insects were dominating group in benthos. Abundance of zooplankton ranged from 0.02 to 1.53 thousands ind/m2. Benthic organisms abundance ranged from 0.12 to 6.30 thousands ind/m3. Zooplankton biomass varied from 0.01 to 40 mg/m3. Biomass of zoobenthos varied from 0.003 to 28.46 g/m2. Number of species of zooplankton in samples varied from 2 to 22. Number of benthic species in sampes varied from 4 to 39. The index of zooplankton species diversity varied from 0.5 to 4.2 bit/ind, zoobenthos – from 1.04 to 4.47 bit/ind. Majority of recorded pelagic and benthic species belong to widespread holarctic and palearctic types of distributio n. The water quality was characterized mainly by II and III classes: pure – the moderate polluted waters respectively.

scholarly journals МНОГОЛЕТНЯЯ ИЗМЕНЧИВОСТЬ ХИМИЧЕСКОГО СОСТАВА И КАЧЕСТВА ВОДЫ НА ВСЕМ ПРОТЯЖЕНИИ РЕКИ АМУР

2019 ◽  
Author(s):  
A.A. Kovalenko
Keyword(s):  
Water Quality ◽  
Chemical Composition ◽  
The State ◽  
Amur River ◽  
Quality Of Water ◽  
Maximum Permissible Concentrations ◽  
Water Ecosystem ◽  
The Amur River ◽  
The Difference

В условиях антропогенного воздействия на окружающую среду и несбалансированного природопользования может происходить снижение самоочищающей способности реки Амур и ухудшение качества воды. Водопользование в бассейне реки осуществляется со стороны трёх государств: России, Монголии и Китая. Основными источниками поступления загрязняющих веществ в Амур с российской стороны являются предприятия деревообрабатывающей промышленности, машиностроение, цветная металлургия, добыча полезных ископаемых, производство электроэнергии. Снижение качества воды происходит также за счет недостаточной степени очистки сточных вод. Трансграничное положение изучаемого водного объекта, разница демографических потенциалов России и Китая и активное техногенное воздействие со стороны сопредельных территорий обусловливает актуальность настоящего исследования, целью которого является оценка многолетней изменчивости химического состава и качества воды на протяжении реки Амур. Исследование проведено на основе многолетних (20002017 гг.) гидрохимических данных Государственной системы наблюдений за состоянием и загрязнением окружающей среды Росгидромета в пунктах наблюдений на р. Амур: с. Черняево, гг. Благовещенск, Хабаровск, КомсомольскнаАмуре и НиколаевскнаАмуре. Рассмотрен химический состав воды на различных участках реки и проведена оценка качества воды по гидрохимическим показателям. Построены графики временной изменчивости значений удельного комбинаторного индекса загрязненности воды (УКИЗВ). Анализ многолетних данных показал, что на всех исследуемых участках реки концентрации хлоридов, сульфатов и нитратов не превышают предельно допустимые концентрации. Выявлены характерные загрязняющие вещества, содержание которых превышает нормативы ПДК более, чем в половине случаев. Это органические вещества, азот аммонийный, соединения железа, меди, цинка, никеля, марганца, фенолы и нефтепродукты. Наблюдается увеличение содержания некоторых загрязняющих веществ вниз по течению реки. В целом качество воды реки Амур на различных участках характеризуется 3м ( загрязненная и очень загрязненная ) и 4м классами качества ( грязная ). В динамике выражена общая положительная тенденция незначительного снижения уровня загрязненности воды.The title of the article is longterm variability of chemical composition and quality of water along the Amur river. As the title implies the article describes the chemical composition of water in different parts of the river and the water quality by hydrochemical parameters. A mention should be made that under the conditions of anthropogenic press on the environment and unbalanced use of natural resources, the ecological potential of the water ecosystem of the Amur River is depleted and the quality of water decreases. The transboundary position of the studied water object, the difference in the demographic potentials of Russia and China determines the relevance of this paper. The purpose of the work is to assess the longterm variability of the chemical composition and water quality along the Amur River. It should be noted that this research is based on longterm (20002017) Hydrochemical information. The state system of observers for the state and environmental pollution of Roshydromet at observation points along the river: c. Chernyaevo, the city of Blagoveshchensk, Khabarovsk, KomsomolskonAmur and NikolaevskonAmur. As a result, the analysis of longterm data showed that the concentrations of chlorides, sulphates and nitrates do not exceed the maximum permissible concentrations on all the studied river sections. Identified characteristic pollutants, the content of which exceeds the MPC standards in more than half of the cases. There is an increase in the content of some pollutants downstream of the river. In general, the water quality of the Amur River at different sites is characterized by the 3rd (polluted and very polluted) and 4th quality classes (dirty).

scholarly journals Zooplankton from can Giuoc River in Southern Vietnam

2016 ◽  
Vol 62 (3) ◽  
pp. 27-33 ◽  
Author(s):  
Pham Anh Duc ◽  
Nguyen Thi Mai Linh ◽  
Dang My Thanh ◽  
Pham Van Mien
Keyword(s):  
Water Quality ◽  
Quality Assessment ◽  
Inorganic Nitrogen ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Water Quality Assessment ◽  
Suspended Solid ◽  
Quality Parameters ◽  
Species Number ◽  
Southern Vietnam

Abstract In this study, the variables of zooplankton and water quality were investigated in the Can Giuoc River, Southern Vietnam. Zooplankton was monitored in April and September 2015 at 5 sampling sites in the river. Some basic water quality parameters were also tested, including pH, total suspended solid (TSS), dissolved oxygen (DO), biological oxygen demand (BOD5), inorganic nitrogen (NH4+), dissolved phosphorus (PO43−), and coliform. The zooplankton biodiversity indices were applied for the water quality assessment. The results showed that pH ranged from 6.7 to 7.6 during the monitoring. The TSSs were between 34–117 mg/L. The DO and BOD5 were from 0.6 to 3.8 mg/L and from 6.3 to 13.2 mg/L, respectively. The NH4+ and PO43− concentrations ranged from 0.44 to 3.23 and from 0.08 to 1.85 mg/L, respectively. The coliform number was between 9.3×103–9.3×104 MPN/100 mL. The zooplankton analyses showed that there were 31 species of coelenterates, rotatoria, oligochaetes, cladocerans, copepods, ostracods, mysidacea, and 8 larval types. Thereof, the species of copepods were dominant in the species number. The zooplankton density ranged from 9 500 to 23 600 individuals/m3 with the main dominant species of Moina dubia (Cladocera), Thermocyclops hyalinus, Acartia clausi, Oithona similis (Copepoda), and nauplius copepods. The biodiversity index values during the monitoring were from 1.47 to 1.79 characteristic of mesotrophic conditions of the aquatic environment. Besides, the species richness positively correlated with pH, TSS, DO, BOD5, NH4+, PO43−, and coliform, while the zooplankton densities got a positive correlation with DO, BOD5, NH4+, PO43−, and coliform. The results confirmed the advantage of using zooplankton and its indices for water quality assessment.

Characteristics of water quality of the Amur River near Khabarovsk in may–june 2019

2019 ◽  
Vol 22 (3) ◽  
pp. 58-64
Author(s):  
N.K. Fisher ◽  
L.A. Garetova ◽  
N.M. Shesterkina ◽  
A.M. Koshelkov ◽  
Kh.N. Nikolaeva
Keyword(s):  
Water Quality ◽  
Amur River ◽  
The Amur River
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