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1

Use of algae for monitoring rivers in Poland - in the light of a new law for environmental protection

100%
Zelazowski E., Magiera M., Kawecka B., Kwandrans J., Kotowicz J.
|
2004
|
issue 4
27-39
EN
An account is given of the status of monitoring in a new legal system for environmental protection in Poland. The legal acts such as Environmental Protection Law, Water Law and resulting from it the Ordinance of the Ministry of Environment, which relate to the EU Water Framework Directives (2000/60/EC) were introduced to the Polish legal system. They present the principles by which state monitoring of the environment should operate in Poland and thus the source of information about water quality. The present article deals with continuation of the biological studies for monitoring rivers, including the relevance of a computer programme for this purpose. The article concludes with and assessment of how the quality of Polish rivers will be improved as a result of this legislation.
2

General chemical indicators of water quality in Roztoka Odrzanska (Odra River Mouth, NW Poland)

100%
Poleszczuk G.
Oceanological Studies
|
1996
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vol. 25
|
issue 3
55-65
EN
The paper results of a study on general chemical indicators of surface water quality carried out in Roztoka Odrza?ska in 1982-1994.The parameters in question were: oxygen content, chloride, nitrate and dissolved phosphate concentrations and BOD5. An attmept was undertaken to determine the influence of the Odra River flow on the chemical status of Roz-toka water. Threshold values of Qs were determined in three regimes of water transport: a back flow of water from the Szczecin Lagoon in the full river-bed and bidirectional (two-layered) water movements - with back flow prevailing and with riverine inflow prevailing.
3

The evaluation of water quality in the swelinia stream on the basis of diatom analysis

100%
Bogaczewicz-Adamczak B., Kozlarska I.
Oceanological Studies
|
1999
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vol. 28
|
issue 1-2
59-71
EN
The Swelinia Stream is one of several streams discharging into the Gulf of Gdansk in the Sopot coastal zone. The stream is inhabited by a great variety of benthic diatom flora, among which freshwater alkaliphilous diatoms, typical of eutrophic waters, are predominant. The $-meso- and $/'-mesosaprobic diatoms typical of waters moderately polluted by organic matter prevail within the saprobic groups. Xenosaprobic diatoms occur only occasionally. Quantitative analysis of diatoms, classified according to their saprobic requirements into taxa sensitive, tolerant and resistant to organic pollution, has shown that the water quality is deteriorating downstream. Evidence for this was the absence of class I water in the stream's lower course; the usual quality level is class II, which may even drop to class III in the summer and autumn.
4

Indicator value of freshwater red algae in running waters for water quality assessment

100%
Eloranta P., Kwandrans J.
|
2004
|
issue 1
47-54
EN
Freshwater red algae (Rhodophyta) occur mainly in running waters. They are generally indicators of good water quality (oligotrophic, oligosaprobic). Many of them are also included on lists of threatened algae. According to the literature, the range of occurrence of red algae at the group level is wide for current velocity, water conductivity and pH. At the genus level, some genera seem to prefer or need hard water and an alkaline environment (Compsopogon, Hildenbrandia, Thorea), whereas others prefer soft water (conductivity < 100 muS m-1). They may also occur in acid water (Audouinella, Batrachospermum, Lemanea, Sirodotia and Tuomeya). With the exception of those living in hard waters, most species also have a rather wide ecological tolerance as measured by common water quality variables. Trophic and saprobic classifications seem to depend rather on geographical conditions than on the real ecological preferences of red algal taxa.
5

Phytoseston communities used for the assessment of running water quality - an example based on the upper vistula river. A review

100%
Bucka H.
|
2004
|
issue 4
5-26
EN
This is a review of data that were obtained in the past and in more recent years by various authors who have often been involved in collective, interdisciplinary studies of the usefulness of phytoseston for evaluating the water quality of the Upper Vistula River. It is commonly known that drifting microflora in riverine bioseston is primarily a mixture of benthic forms that have been washed out from the bottom ? their prior habitat. A considerable contribution of allochthono-us forms were found among them. They originated from a reservoir created by river damming and also from tributaries. Generally, at the end of the 1990s at some Sites of the studied sector of the Vistula River there was intense development of potentially toxic cyanobacteria. The predominant taxa (e.g., Microcystis spp., Anabaena spp., Woronichinia naegeliana) and coccal green algae (e.g., Scenedesmus spp., Pediastrum spp.) are usually noted in eutrophic water bodies. These taxa competed with diatoms or sometimes prevailed over them in abundant populations. Since these groups were omitted from the benthic diatom index method, phytoseston analysis contributed very important additional information to the diatom index results applied by other authors.
6

Diatoms as indicators of water pollution in the coast-al zone of the Gulf of Gda?sk (Southern Baltic Sea)

100%
Bogaczewicz-Adamczak B., Klosinska D., Zgrundo A.
Oceanological Studies
|
2001
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vol. 30
|
issue 3-4
59-75
EN
The subject of the study was microphytobenthos in the sediments of the coastal zone of the Sopot sea-resort (the Gulf of Gdansk). Sediment samples were taken from 12 sites situated in the mouths of the streams and creeks and from the beach close to the sea, once a month from January to December 1998. The indicative groups of diatoms were the basis of the estimation of water quality, taking into consideration its salinity, trophic state and saprobity. The quality of water was classified according to Lange-Bertalot (1979). The results of the diatom studies indicate that the dominating groups were the oligo-halobous and mesohalobous taxa, chatacteristic of highly eutrophic waters. The most abundant groups were the resistant (poly-saprobic and '-mesosaprobic) and tolerant ($-mesosaprobic) diatoms, which are indicators of water quality class III in the coastal zone of the Sopot sea-resort.
7

Benthic diatoms in polluted river sections of Central Poland

88%
Rakowska B.
|
2004
|
issue 1
11-21
EN
Water quality was investigated in the most polluted sections of three rivers in Central Poland: the Rawka, Jeziorka and Bzura. The estimate was carried out using the Lange-Bertalot indicatory method, which is based on various diatom tolerances to pollution, and by calculating the saprobity index of Pantle & Buck. In the investigated rivers, Cocconeis pediculus, C. placentula, Fragilaria construens, F. pinnata, Gomphonema olivaceum, Melosira varians, Meridion circulare, Navicula lanceolata were the most frequent dominants of species sensitive to pollution. The most frequent tolerant species were Achnanthese lanceolata ssp. frequentissima, Cymbella silesiaca, Fragilaria capucina var. vaucheriae, F. ulna, Navicula capitata var. capitata, N. gregaria, N. pupula, and Nitzschia amphibia. The dominants of the resistant group were Gomphonema parvulum, Navicula saprophila, N. veneta, and Nitzschia palea. On the basis of the methods mentioned above, the water of the Rawka River was assigned to water quality class II/II-III, that of the Jeziorka to class II-III/III and that of the Bzura (at both study sites) to class II-III.
8

Using benthic diatom communities and diatom indices to assess water pollution in the Puck Bay (Southern Baltic Sea) littoral zone

88%
Bogaczewicz-Adamczak B., Dziengo M.
Oceanological and Hydrobiological Studies
|
2003
|
issue 4
131-157
EN
The subject of the study were the benthic diatom communities of the Puck Bay littoral zone. Samples of the sediments were taken from sites situated near the sewage treatment plant at Swarzewo from June 1998 to May 1999. The analysis of the species composition and the relative percentages of the diatom indicative groups were used to evaluate water quality. The following ecological factors were taken into consideration: salinity, trophic status and saprobity. Following Lange?Bertalot (1979), water quality was classified based on a 5-degree scale of saprobity. It was correlated to the percentages of the sensitive, tolerant and resistant diatoms taxa and their reaction to organic matter content. The water quality evaluation was tested with the diatom indices using Omnidia 3 software. The results of the diatom studies indicate that the dominating groups were the oligohalobous and mesohalobous taxa, which are characteristic of eutrophic waters and contain biogenic compounds, mainly nitrogen and phosphorus. The most abundant groups in the saprobic spectrum were the resistant (-mesosaprobic, polysaprobic) and tolerant (-mesosaprobic, /-mesosaprobic) diatoms, which are indicators of water purity class II (III), and in summer, predominantly class III. The comparison of the results of diatom analysis of the Puck Bay microphytobenthos obtained with the Lange?Bertalot (1979) method and the those acquired with Omnidia 3 software demonstrates the possibility of applying it to evaluate environmental status and assess polluted brackish waters.
9

Diatom indices and stream typology in Estonia

88%
Vilbaste S., Jarvekulg R., Pall P., Piirsoo K., Trei T., Viik M.
|
2004
|
issue 1
3-10
EN
This paper deals with the use of diatom indices in the assessment of streams in Estonia. The problem addressed is how rational it is to determine different types of streams or stream reaches based on diatom research. At the moment, there are five different typologies of running waters in Estonia, two of which are analyzed here. Diatom indices can be employed to assess the ecological quality of water but not the status or type of stream. The most promising diatom indices for such assessment are the Trophic Diatom Index, Watanabe Index, Descy Index, and Schiefele & Schreiner Index.
10

Water quality study of the Condor and Capivara streams, Porto Alegre Municipal District, Rs, Brazil, using epilithic diatom biocenoses as bioindicators

75%
Lobo E. A., Callegaro V. L. M., Wetzel C. E., Hermany G., Bes D.
|
2004
|
issue 2
77-93
EN
The aim of this work was to evaluate the water quality of two urban streams, Condor and Capivara, in the Municipal District of Porto Alegre, RS, Brazil, by measuring physical, chemical and biological variables. Between May 1999 and August 2000, six field trips were taken to sample five sites distributed along the streams. Multivariate canonical correspondence analysis (CCA) was applied for the complete evaluation of physical, chemical and biological data. It was confirmed that phosphate had the largest impact on ordination and exhibited an evident eutrophication gradient. Mayamaea atomus, Amphora montana, Sellaphora pupula and Cyclotella meneghiniana were extremely abundant under such conditions.
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