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1
Content available remote Benthic diatoms in polluted river sections of Central Poland
100%
Rakowska B.
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tom Vol. 33, No. 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.
2
Benthic diatoms in polluted river sections of Central Poland
100%
Rakowska B.
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nr 1
3
Diatom communities occurring in Niebieskie Zrodla near Tomaszow Mazowiecki, Central Poland [1963-1990]
100%
Rakowska B.
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nr 2
4
Uwagi o taksonomii i ekologii niektorych gatunkow okrzemek z rodzaju Navicula Bory
88%
Rakowska B.
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tom 09
105-125
5
Content available remote Algae assemblages in the Rąbień peat-bog reserve
63%
Rakowska B. , Sitkowska M.
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tom Vol. 39, No.2
63-74
EN
Due to anthropogenic stress, the character of the Rąbień peat-bog reserve is changing, and large parts of it are being transformed into a transitional peat-bog. During more than 23 years of research, considerable changes have been noted in water pH (from 4.63 to 6.64), trophic status, and the species composition of algae. The subject of the research carried out in 2004-2005 were Bacillariophyceae and Chlorophyta. A decrease was observed in the number of species characteristic of high peat-bogs in favor of alkaliphilic species and those occurring in eutrophic waters.
6
Wpływ ścieków mleczarnianych i fenoli na glony Chlorella pyrenoidosa
63%
Mical A. H. , Rakowska B.
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nr 3-4
7
Diatoms in the biological assessment of the ecological state of waters using the Czarna Staszowska River as an example
63%
Szczepocka E. , Rakowska B.
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nr 2
8
Beta-glukan jako czynnik antyodzywczy jeczmienia Czesc I - Przeglad pismiennictwa
63%
Rek-Cieply B. , Rakowska B.
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1992
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nr 183
141-147
9
Algae accompanying macrophytes in a hydroponic lagoon [third stage of sewage purification]
63%
Rakowska B. , Sitkowska M.
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nr Suppl.3
10
Dynamics of blue-green algae development in Sulejów dam reservoir
51%
Galicka W. , Lesiak T. , Rakowska B.
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tom Vol. 27, No. 1
21-26
EN
Phytoplankton of Sulejow Reservoir was investigated in 1979-1993. Over that period, blue-green algae were usually a constant component of phytoplankton. Their percentage in the total phytoplankton biomass widely varied both from season to season and from year to year. Maximum values were noted in summer, although sometimes a shift of peak development toward spring or even winter was observed. The development was not uniform in the whole area of the reservoir; blue-green algae dominated in the middle and downstream, that is in the deepest parts of the reservoir. The main components of phytoplankton included Microcystis aeruginosa Kţtz. and Aphanizomenon flos-aquae (L.) Ralfs.
11
Diatomological aspects of the Fenn’s and Whixall Mosses complex (Shropshire, UK)
51%
Szulc K. , Besenyei L. , Szulc B. , Rakowska B.
Oceanological and Hydrobiological Studies
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2014
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tom 43
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nr 3
12
Content available remote First record of Prestauroneis tumida Levkov and accompanying species in Poland
51%
Rakowska B. , Szczepocka E. , Żelazna-Wieczorek J. , Olszyński R. M.
Oceanological and Hydrobiological Studies
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2017
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tom Vol. 46, No. 1
30--37
EN
The paper presents morphological and ecological characteristics of Prestauroneis tumida Levkov recorded for the first time in Poland. The diatom Prestauroneis tumida Levkov was found in the microbenthos of the Czarna Staszowska River (left tributary of the Vistula River, south-eastern Poland). This diatom species was present in the upper section of the river (sampling sites: 1 – Drogowle, 2 – Raków) where saprobic state varied from oligosaprobic to beta-mesosaprobic. Dimensions of the valve were as follows: length 30-44 µm, width 8-11 µm and 13-16 striae in 10 µm. Our research updates the morphological diversity data such as measurements of valves in terms of width and the number of striae. The accompanying species of Prestauroneis tumida belonged to the group of good water quality indicators, from oligo- to mesosaprobic ones. Some of the identified species were indicators of alkaline, calcium-rich waters.
13
Dynamics of blue-green algae development in Sulejow dam reservoir
51%
Galicka W. , Lesiak T. , Rakowska B.
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nr 1
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