Wyniki wyszukiwania - BazTech

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Physico-chemical and biological water quality of Warna and Pengilon Lakes, Dieng, Central Java

Soeprobowati Tri Retnaningsih, Addadiyah Nurul Layalil, Hariyati Riche, Jumari Jumari

Journal of Water and Land Development

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2021

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no. 51

38--49

EN

Warna and Pengilon Lakes are very close to each other and connected with the sill, a famous tourist destination in the Dieng Plateau Java. Land-use changes are the main problem that affected the lakes. The conversion of forest into an agricultural area had induced erosion and increased the volume of nutrients discharged to the lake due to high use of fertilisers in potatoes farms. In the dry seasons, water from those lakes was pumped to irrigate agricultural land. This study aimed to determine the water quality of Warna and Pengilon Lakes based on physical, chemical parameters, and phytoplankton communities. Water samples were collected from 4 sites at each lake to analyse biological oxygen demand (BOD), chemical oxygen demand (COD), ammonia, nitrate, nitrite, and total nitrogen (TN). Temperature, pH, dissolved oxygen (DO), turbidity, and conductivity (EC) were measured in-situ. During this research, turbidity and BOD in Warna and Pengilon Lakes exceeded the Indonesian water quality standard. Based on the STORET method, the water quality of Lake Warna was assessed as highly polluted for all classes. However, based on the pollution index (PI), Lake Warna was slightly to moderately polluted, as well as the saprobic index was in the β-mesosaprobic phase. Based on the species diversity index of phytoplankton, both Warna and Pengilon Lakes were moderately polluted. The long-term monitoring studies are necessary as an early warning sign of water quality degradation. Therefore, they provide insight into the overall ecological condition of the lake and can be used as a basis for developing suitable lake management.

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A Preliminary Study Into the Possibility of δ13C Being Used as a Sensitive Indicator of the Trophic and Hydrobiological Status of Aquatic Ecosystems

Bartoszek L., Koszelnik P., Zamorska J., Gruca-Rokosz R., Zdeb M.

Journal of Ecological Engineering

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2018

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Vol. 19, nr 6

191--198

EN

There is a need to search for additional indicators allowing for more accurate identification of both the trophic status of waters as well as its chemical and biological consequences. The work detailed in this paper involved a preliminary analysis pertaining to the possibility of using an isotopic index in association with the values for trophic and saprobic indicators in describing a dam reservoir experiencing a far-reaching eutrophication. The water samples for the physicochemical analysis were collected from three sites along the axis of the dam reservoir in Rzeszów three times during the spring and summer of 2013. The results sustained the classification of the Reservoir's waters as hypertrophic, irrespective of the particular zone sampled. While phytoplankton blooms characterised by reference to the numbers of organisms per unit volume of water were also similar throughout the Reservoir, diversification in terms of taxonomic composition was to be noted, given the occurrence of cyanobacteria among the dominant diatoms in the area close to the dam. This presence was accompanied by enrichment of the Reservoir's suspended organic matter with carbon of the heavier 13C isotope. On this basis, the δ13C isotopic index can be regarded as a potentially useful indicator allowing for more accurate identification of both the level and the nature of the ongoing trophic degradation in bodies of water.

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Biologiczny monitoring ekosystemów wodnych. Zalety i ograniczenia współczesnych metod

Czerniawska-Kusza I.

Chemia i Inżynieria Ekologiczna

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2003

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Vol. 10, nr 1-2

43-48

PL

Przedstawiono współcześnie stosowane w Polsce i innych krajach metody biologicznej oceny jakości wód powierzchniowych oraz kierunek ich ewolucji. W zwięzłej charakterystyce uwzględniono zarówno zalety metodyk, jak też ograniczenia w ich powszechnym (światowym) zastosowaniu. Wiąże się to z pracami podjętymi w 1993 r. przez Instytut Ochrony Środowiska nad dostosowaniem przepisów polskich do wymagań europejskich w zakresie oceny jakości i klasyfikacji wód. Prace te uwzględniają m.in. zmianę metodyki oceny jakości wód powierzchniowych płynących.

EN

The paper presents the biological surface water quality assessment methods used to-day in Poland and other countries as well as a direction of their evolution. A brief characteristic includes both advantages of the methods and limitations in their prevailing (world-wide) application. This is connected with works, undertaken in 1993 by the Institute of Environmental Protection, on the adaptation of Polish regulations concerning water quality assessment and classification to the European requirements. The works take into account change of the method of running water quality assessment, among others.

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Assessment of Possibilities of the Biotic Index Application in the Biological Monitoring of the Running Water Quality

Czerniawska-Kusza I.

Chemia i Inżynieria Ekologiczna

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2003

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Vol. 10, nr 8

715-722

EN

The results of chemical and biological analyses of water of the lower Nysa Kłodzka river in relation to geomorphological and anthropogenic factors were presented. 14 physical and chemical variables, as well as saprobic and biotic (BBI, BMWP) incides were used to evaluate water quality. The usefulness of the biotic index methodology was accentuated in the running water quality assessment

PL

Przedstawiono wyniki chemicznej i biologicznej analizy wód dolnego biegu rzeki Nysy Kłodzkiej w odniesieniu do czynników geomorfologicznych i antropogennych. Do przeprowadzenia oceny jakości wód wykorzystano 14 parametrów fizycznych i chemicznych, index saprobowy i indeksy biotyczne (BBI, BMWP). Podkreślona została użyteczność stosowania metodyki indeksu biotycznego w badaniach jakości wód plynących