Correlation between physico-chemical water quality and river ecosystems in Malaysia rivers with different land uses

Background: Effluents from agricultural activities, metal and peat mining, urban and industrial areas, informal settlements and wastewater treatment plants all influence tributaries feeding the Mooi River. All these land uses ultimately result in a deterioration of water quality in the Mooi River.Objectives: The main objective was to relate the effects of inflowing tributaries to water quality and phytoplankton assemblages in the Mooi River.Method: Physico-chemical environmental variables were compared with water quality objectives and known limits to assess general water quality in the Mooi River over a one-year period. Water quality and phytoplankton in tributarieswere compared to that at sites upstream and downstream from their inflows to determine the extent to which the tributaries affected the Mooi River. Multivariate analysis assisted in the interpretation of phytoplankton and physico-chemical data at the different sites.Results: Seven phytoplankton phyla were identified in the Mooi River. Diatoms and green algae were most dense and diverse. Cyanobacteria were responsible for various problems, especially in the Wasgoedspruit where they dominated and reached high densities. Lowest phytoplankton density and diversity were found in the upstream and downstream sections of the river, while maximum density and diversity were found during summer in the middle reaches. The inflow of tributaries, especially the Wasgoedspruit, had a pronounced effect on water quality downstream. Phytoplankton density and diversity were less affected than chemical variables, especially nutrient concentrations.Conclusion: Various land use activities surrounding the Mooi River’s tributaries contributed to a deterioration of water quality in the main stream of the Mooi River.

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Suspended silt concentrations in the lower Olifants River (Mpumalanga) and the impact of silt releases from the Phalaborwa Barrage on water quality and fish survival

Koedoe ◽

10.4102/koedoe.v38i2.312 ◽

1995 ◽

Vol 38 (2) ◽

Cited By ~ 23

Author(s):

Y. Buermann ◽

H.H. Du Preez ◽

G.J. Steyn ◽

J.T. Harmse ◽

A. Deacon

Keyword(s):

Water Quality ◽

National Park ◽

Management Strategy ◽

Kruger National Park ◽

Physico Chemical ◽

Concentration Changes ◽

Olifants River ◽

Fish Survival ◽

The Impact ◽

Chemical Water

Silt loads in the Olifants and Sabie river systems inside the Kruger National Park, were monitored by collecting water samples every consecutive week for a period of 20 months. The variation in silt concentration, changes in selected physico-chemical water quality variables and fish mortalities during flushing (i.e. release of silt, by sluicing) of the Phalaborwa Barrage, were also monitored. The Olifants River inside the Kruger National Park carried high silt loads in summer; in the dry season the suspensoid load was greatly reduced. A similar pattern was observed in the Sabie River, but the silt loads were generally lower. It was apparent that silt loads released from the Phalaborwa Barrage led to large variations in the natural silt loads of the Olifants River. These increased amounts of silt (25 000 mg/1 to >70 000 mg/1) caused drastic reductions in the dissolved oxygen concentration of the water, ranging from >6 mg/1 to 0 mg/1. Depending on the severity and duration of the flushing, fish succumb to such silt loads. These findings, as well as published information, indicate that the management strategy of flushing to improve storage capacity is ecological unacceptable. It is therefore suggested that the use of the Phalaborwa Barrage as a future reservoir should be critically re-evaluated.

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Evolution of physico-chemical water quality and methane emissions in the tropical hydroelectric reservoir of Petit Saut (French Guiana)

SIL Proceedings 1922-2010 ◽

10.1080/03680770.1998.11901478 ◽

2000 ◽

Vol 27 (3) ◽

pp. 1454-1458

Author(s):

Sandrine Richard ◽

Corinne Galy-Lacaux ◽

André Arnoux ◽

Philippe Cerdan ◽

Robert Delmas ◽

...

Keyword(s):

Water Quality ◽

French Guiana ◽

Methane Emissions ◽

Hydroelectric Reservoir ◽

Physico Chemical ◽

Petit Saut ◽

Chemical Water

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Occurrence and ecology of Geissleria declivis

Biologia ◽

10.1515/biolog-2015-0007 ◽

2015 ◽

Vol 70 (1) ◽

Cited By ~ 1

Author(s):

Barbara Rakowska ◽

Ewelina Szczepocka

Keyword(s):

Water Quality ◽

Geological Structure ◽

Diatom Species ◽

Ecological Analysis ◽

Water Parameters ◽

Physico Chemical ◽

The World ◽

Main Components ◽

Chemical Water ◽

Zone Water

AbstractIn the microbenthos of the Czarna Staszowska River (south-eastern Poland), the diatom Geissleria declivis (Hustedt) Lange-Bertalot & Metzeltin, a species rarely noted in Poland, but also in Europe and the world, was recorded. In this study, the taxonomic, morphological and ecological analysis of the diatom species is presented. Also, the specific geological structure of the region of Poland, and physico-chemical water parameters of the river where the species was now observed, are described. The water of that section of the river where G. declivis occurred is included in the oligosaprobic to beta-mesosaprobic zone (Water Quality Class I-II). Limestone and gypsum are the main components of the geological structure of the river valley. Accompanying species of G. declivis were: Achnanthes pusilla (Grun.) De Toni, Amphora copulata (Kütz.) Schoem. & Arch., Fragilaria brevistriata Grun. in Van Heurck, Fragilaria pinnata Ehr., Geissleria decussis (Hust.) Lange-B. & Metz., Hippodonta capitata (Ehr.) Lange-B., Metz. & Witk., Hippodonta costulata (Grun.) Lange-B., Metz. & Witk., Navicula concentrica Carter, Navicula cryptocephala Kütz., Navicula novaesiberica Lange-B., Navicula rostellata Kütz., Nitzschia archibaldii Lange-B., Parlibellus protractoides (Hust.) Witk., Lange-B. & Metz. Taxa that are indicators of very good water quality were: Achnanthes peragalli Brun & Heribaud, Achnanthes subatomoides (Hust.) Lange-B. & Arch., Achnanthidium kranzii (Lange-B.) Round & Bukht., Cymbopleura hybrida (Grun.) Kram., Navicula densilineolata (Lange-B.) Lange-B., Navicula notha Wallace, Nitzschia fibulafissa Lange-B. Taxa preferring waters rich in calcium and chalk were: Aneumastus stroesei (Ostrup) Mann & Stickle, Diploneis parma Cleve, Hippodonta lueneburgensis (Grun.) Lange-B., Metz. & Witk., Navicula gottlandica Grun. in Van Heurck, Navicula jakovljevicii Hust., Navicula moskalii Metz., Witk. & Lange-B., Sellaphora mutatoides Lange-B. & Metz., Sellaphora pseudopupula (Krasske) Lange-B. Navicula oppugnata Hust.

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The Physico-Chemical Water Quality of the Obafemi Awolowo University Teaching and Research Farm Lake, O.A.U. Campus, Ile-Ife, Southwest, Nigeria

Journal of Environmental Protection ◽

10.4236/jep.2019.107052 ◽

2019 ◽

Vol 10 (07) ◽

pp. 881-899 ◽

Cited By ~ 1

Author(s):

Adedeji Idowu Aduwo ◽

Israel Funso Adeniyi

Keyword(s):

Water Quality ◽

University Teaching ◽

Teaching And Research ◽

Physico Chemical ◽

Southwest Nigeria ◽

Chemical Water

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Determination of physico-chemical water quality of Derepazarı Stream (Rize-TURKEY) and evaluation according to some water quality standards

Journal of Anatolian Environmental and Animal Sciences ◽

10.35229/jaes.297643 ◽

2017 ◽

Vol 2 (1) ◽

pp. 19-22 ◽

Cited By ~ 2

Author(s):

BÜLENT VEREP ◽

TANJU MUTLU ◽

VİLDAN ÇAKIR ◽

GİZEM AYDIN

Keyword(s):

Water Quality ◽

Quality Standards ◽

Water Quality Standards ◽

Physico Chemical ◽

Chemical Water

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Water Quality and Dynamic of Schistosomiasis Intermediate Host Snails in the Lake Areas, District of So-Ava, Southern Benin

International Journal of Multidisciplinary and Current Research ◽

10.14741/ijmcr/v.6.6.16 ◽

2018 ◽

Vol 6 (6) ◽

Author(s):

Moudachirou Ibikounlé1 ◽

Ablavi A. Onzo-Aboki ◽

Elokou Alabi ◽

Samoussou Dine Mahama ◽

...

Keyword(s):

Water Quality ◽

Intermediate Host ◽

Oxygen Demand ◽

Control Programme ◽

Freshwater Snails ◽

Intermediate Hosts ◽

Water Parameters ◽

Physico Chemical ◽

Physical And Chemical ◽

Chemical Water

Objectives: Urinary schistosomiasis is known to be endemic in the lake Nokoué areas of the District of So-Ava. For the past ten years, the National Control Programme for Communicable Diseases of the Ministry of Health has been making efforts to control schistosomiaisis morbidity through mass drug treatment with Praziquantel. This study aimed to assess the diversity and dynamic of potential snails known as schistosomiasis intermediate hosts. Methodology and Results: This study was carried out for 12 months (from July 2015 to June 2016) and consisted in the periodical analysis of the physical and chemical water parameters (temperature, oxygen concentration, pH, nitrite and nitrate rates. Salinity, total dissolved solids (TDS) and, biochemical oxygen demand) in relation with diversity, distribution and relative abundance of freshwater snails (Bulinus forskalii, B. globosus and B. truncatus). To this end, seven harvesting sites on Lake Nokoué were, reasonably selected for monthly hydrobiological and malacological data monitoring. The results showed a variable correlation between the dynamic of schistosomiasis intermediate host snailsm and several physico-chemical water parameters. Bulinus globosus was negatively influenced by salinity and nitrate rates while B. forskalii was negatively influenced by pH, Oxygen, TDS, salinity and nitrate rates. The three species of freshwater snails were strongly influenced by the water temperature. Conclusion: The results suggest a seasonal schistosome transmission induced by the seasonal dynamic of intermediate host snails. Water quality seems appropriate to the development of host snails from December to March and would be the strong period of schistosomiasis transmission. However, furthermore studies will need for well understanding the dynamic transmission necessary for developing adapted strategy control.

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Monsoonal plankton distribution and physico-chemical water qualities in a rain-fed lake in Noakhali, Bangladesh

Bangladesh Journal of Fisheries ◽

10.52168/bjf.2020.32.20 ◽

2020 ◽

Vol 32 (1) ◽

pp. 179-184

Author(s):

NAJMUS SAKIB KHAN ◽

MD SAIFUL ISLAM ◽

JABER BIN ABDUL BARI ◽

MD MOSTOFA KAMAL

Keyword(s):

Water Quality ◽

Dissolved Oxygen ◽

Suspended Solids ◽

Science And Technology ◽

Total Suspended Solids ◽

Zero Point ◽

Physico Chemical ◽

Plankton Distribution ◽

Chemical Water

The study focused on the monsoonal distribution of plankton in a rain fed partial lake inSonapur, Noakhali district, Bangladesh. Three sampling sites were chosen between Sonapur zero point andNoakhali Science and Technology University. Four groups of phytoplankton such as Chlorophyceae (11genera), Bacillariophyceae (6 genera), Cyanophyceae (6 genera) and Euglenophyceae (3 genera) andfour groups of zooplankton such as Rotifera (10 genera), Cladocera (3 genera), Copepode (2 genera) andCrustacea (2 genera) were identified. The lake was found to be organic polluted (Palmer’s algal pollutionindex value: 22.33). The average wet land zooplankton index (WZI) value of this lake was estimated 3.72means moderate water quality. During the sampling periods some important physico-chemical parameterslike temperature (29-30 ?C), pH (7.8-8.2), transparency (6.5-13.50 cm), free CO2 (8.00-12.00 mg/l), totalalkalinity (13.00-14.50 mg/l), ammonia (0.1-0.5 mg/l), nitrate (0.05-0.25 mg/l), nitrite (0.03-0.07),phosphate (0.1-0.9 mg/l), dissolved oxygen (2-3.5 mg/l) and total suspended solids (4.0×10-4-5.3×10-4mg/l) were also determined as supporting water quality statement.

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