Wyniki wyszukiwania - Biblioteka Nauki

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Correlation between physical and chemical parameters of water and biotic indices: The case study the White Drin River basin, Kosovo

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Zhushi Etemi F. , Çadraku H. , Bytyçi A. , Kuçi T. , Desku A. , Ymeri P. , Bytyçi P.

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tom no. 46

229--241

EN

The major impacts on aquatic ecosystems worldwide caused by land use lead to changes in their natural conditions and limitation of water use for various needs. This paper presents the results of the study of the physical and chemical parameters and macroinvertebrate assemblage in the White Drin River (or: the Drim River, Alb. the Drini i Bardhë River) basin, the largest in Kosovo. Macroinvertebrate sampled at 11 sites in the river resulted in 5946 collected benthic organisms, which in taxonomic terms belong to 12 orders and 51 families. Of the total number of organisms, 72.28% were Insects, 25.39% Amphipoda crustaceans and 2.33% were Annelide worms and Mollusk. The used biotic indices Biological Monitoring Working Party (BMWP), Ephemeroptera, Plecoptera, and Trichoptera (EPT), average score per taxon (ASPT) and Stroud Water Research Center (SWRC) classify water quality in excellent category in the sampling site S1 near the source of the White Drin River, whereas in other sampling sites, as a result of pollution, water quality varies on category II–IV. The Pearson's correlation analyses shown that the physical and chemical parameters affect the water quality and the composition of macroinvertebrates. Our results show that the parameters that adversely affect the BMWP, EPT and ASPT biotic indices as well as the Shannon–Wiener, Mergalef and Menhinik diversity indices are: pH, electrical conductivity (EC), total suspended solids (TSS), nitrates (NO3–) and chlorides (Cl–). We can conclude that the anthropogenic impact on White Drin basin affects the physical, chemical and biological parameters of the water therefore these parameters should be constantly included in Biomonitoring and Management plans for water resources in Kosovo.

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Application of new regional biotic index APODEMAC, in environmental quality assessment of lowland streams / Paweł Koperski, Małgorzata Gołub

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Koperski P. , Gołub M.

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tom Vol. 54, nr 2

311-320

EN

Four commonly employed biotic indices based on macrofauna composition: BMWP (British Monitoring Working Party score system), ASPT (Average Score Per Taxon), DSFI (Danish Stream Fauna Index) and FBI (Family level Biotic Index) were used to assess environmental quality of six small slow-flowing lowland streams (Masurian Lakeland, North-eastern Poland). Their efficiencies in determining the level of degradation, assessed by the simoultaneous measuring of the main abiotic parameters of water, were tested. The search for relationships between both abundance and percentages of invertebrate taxa and values of the main abiotic parameters with multiple regression analysis resulted in determining an indicative value for certain taxa. Results of discriminant function analysis show, that environmental quality can be predicted accurately on the basis of macrofauna composition in 94-100% of the sites. However, none of tested indices classified the sites to particular classes of degradation with with sufficient accuracy. The relationships between the values of all tested indices and the values of Cumulative Index of Environmental Quality (CIEQ) based on abiotic parameters, expressed as coefficients of linear regression, were very low and ranged between 0.006 and 0.068. Therefore, a new regional, macrofauna-based biotic index, APODEMAC, is proposed as a better tool for environmental quality assessment. Values of APODEMAC are strongly dependent on values of CIEQ (R^2 = 0.641), and their seasonal variance is lower than that of other indices. Coefficient of linear regression between CIEQ values and APODEMAC was 9 to almost 100 times higher than for other tested biotic indices. The selection of indicator taxa used in APODEMAC procedure was based on comparisons between the taxa densities at sampling sites differing in terms of environmental quality and on the results of multiple regression and discriminant analysis. The importance of certain taxa of molluscs, leeches and dipterans in this procedure is much higher, while the importance of mayflies, stoneflies and caddisflies is much lower than in BMWP, ASPT, FBI and DSFI. The occurrence of the various larval insects in the studied environments seems to be limited rather by substrate type than by the chemical quality of stream water. Application of simple regional biotic indices like APODEMAC is suggested as an, in some cases, easier, cheaper and less time-consuming way of biological assessment compared to complicated and time-consuming implementation of the existing indices.

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Use of artificial substrates for sampling benthic macroinvertebrates in the assessment of water quality of large lowland rivers

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Czerniawska-Kusza I.

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nr 5

EN

The objective of this investigation was to evaluate the usefulness of the artificial substrate sampler in collecting macroinvertebrates for water quality assessment of Polish lowland rivers. This paper presents the results of a comparative study between two different sampling techniques, i.e. nettings filled with brick as artificial substrates and handnet sampling. The validity of applying the biotic index method is also demonstrated. The Belgian Biotic Index (BBI) method and the lower Nysa Kłodzka river were chosen for study. Macroinvertebrates were collected seasonally at five sampling sites. Although some invertebrate taxa revealed a specific preference for one of the two tested sampling substrates, the artificial substrates and handnet samples had a similar fauna composition. BBI scores were rather insensitive to the different sampling methods used during the study. Taking into account all sampling seasons, 60% of the BBI values for the two sampling techniques were the same and nearly 27% scored one unit lower or higher. This has led to the conclusion that water quality changes of the river ecosystem in Poland can be demonstrated by means of the analyses of macroinvertebrates colonizing artificial substrates.

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Refinement of biomonitoring of urban water courses by combining descriptive and ecohydrological approaches

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Lafont M. , Jezequel C. , Vivier A. , Breil P. , Schmitt L. , Bernoud S.

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nr 1

EN

Two approaches are proposed for developing adapted metrics, proposing realistic and sustainable ecologic objectives, and suggesting a management strategy for stream rehabilitation. The first approach implemented a harmonization system of French standardized biotic indices. The second one was based on the development of functional traits (FTrs), which were defined by oligochaete assemblages inhabiting coarse surface sediments and the hyporheic system. The harmonization system allowed to define a weighted general ecological quality. The FTrs characterized an ecological potential (EP) resulting from interactions between physical factors (dynamics of hydrologic exchanges between surface water and groundwater) and chemical factors. An example of using both approaches at the same urbanized site is presented and serves for planning of rehabilitation activities. The benefits, drawbacks and progress of both approaches are discussed.

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Preliminary criteria for ecological status assessment index for dam reservoirs on the basis of the ichthyofauna assemblages

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Wisniewolski W. , Prus P.

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nr 2

131-141

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Biological water quality assessment of the Upper Vistula, Southern Poland

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Slusarczyk A.

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tom 42

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nr 3-4

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The use of various biotic indices for evaluation of water quality in the lowland rivers of Poland [exemplified by the Liwiec River]

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Korycinska M. , Krolak E.

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nr 3

EN

Water quality of the liwiec River (the longest tributary of the Bug River, the South Podlasie Lowland, and the Central Mazovia Lowland) was evaluated in 1998-2000 and 2002 using selected physical and chemical parameters and macroinvertebrate analysis. Classification of water quality was done on the basis of physical and chemical parameters. Taxonomic composition of invertebrate macrofauna was used for calculation of the following biological indices: Belgian Biological Index (BBI), British BMWP/OQR Index, and modified for Polish rivers, Margaleff's index of biological diversity. The values of physical and chemical parameters showed that water of the Liwiec River belongs to the 2nd and 3rd class of quality (in the five degree scale). The values of BBI and BMWP/OQR indices revealed that the water was moderately polluted. According to the biodiversity index, the Liwiec River was classified as the 1st quality class. Correlation between chemical parameters and BBI and BMWP/OQR values shows that these indices may be used for evaluation of water quality in Polish lowland rivers (like Liwiec). However, in the case of the biodiversity index, the ranges for various water quality classes should be modified.

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Biological water quality assessment of the Scinawa Niemodlinska River based on the biotic index method

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Czerniawska-Kusza I.

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nr 1

9

The state and water quality of small rivers in Belarus: the case study of the Dnieper River basin

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Semenchenko V. , Rybianets N.

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nr 1-4

61-67