Wyniki wyszukiwania

1

Formation of the structure of Ciliata seston communities in the River Łyna (Northern Poland)

100%

Hul M.

Acta Hydrobiologica

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1987

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tom 29

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nr 2

2

Upper Vistula River: response of aquatic communities to pollution and impoundment. V. Photosynthetic and respiratory activity of seston

84%

Starzecka A., Bednarz T.

Polish Journal of Ecology

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2002

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tom 50

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nr 2

From March 1997 to March 1998 the photosynthesis (PHS) and respiration of seston (Rs) and bacteria fraction (Rb) in the water of the Upper Vistula River on the section from 10.9 to 336.7 km of the river course were investigated Methods applied: PhS - light and dark bottles, Rs - dark bottles. Rb - respiration of bacterial fraction, which was isolated by water filtration. The smallest mean yearly value of PhS (2.1-8.6 J dm⁻³ 24 h⁻¹) was found at 10.9-36.6 km of the river course and the greatest ones (40.4-42.7 J dm⁻³ 24 h⁻¹) at 248.2-336.7 km, in accordance with the size of the river. Rs was the smallest (23.9-28.7 J dm⁻³ 24 h⁻¹) between 10.9-45.7 km of the river course (on the rather clean sector) and decisively greater (51.6 J dm⁻³ 24 h⁻¹) at 115.6 km, at the most polluted sites. Along longitudinal profile of the Upper Vistula River Rb was equalized and ranged from 20.7 to 24.1 J dm⁻³ 24 h⁻¹, with the exception at 10.9 (spring, clean part of the river, poor in seston) and 336.7 km of the river course, where it was 10-20% smaller. The last value might indicated the presence of organic matter easily available to bacteria at this site. Rb constituted from 45 to 78% of seston Rs with the minimal value at 115.6 km of the river course (the most polluted) and its maximal participation at 10.9 km - clean part of the river, rather poor in seston.

3

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Poziom ogólnej radioaktywności beta i gamma sestonu i perifitonu wybranych zbiorników wodnych

83%

Pietrzak-Flis Z.

Roczniki Państwowego Zakładu Higieny

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1963

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tom 14

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nr 6

4

Ocena jakosci wody potoku Slepiotka na podstawie badan sestonu i bentosu

71%

Niesler A.

Acta Biologica Silesiana

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2000

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tom 34

97-118

5

The role of emergent macrophytes in nutrient cycling in Lake Niepruszewskie (Western Poland)

67%

Lawniczak A. E.

Oceanological and Hydrobiological Studies

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2010

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tom 39

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nr 2

6

Upper Vistula River: response of aquatic communities to pollution and impoundment. XI. Research synthesis

67%

Zurek R., Starzecka A., Bucka H.

Polish Journal of Ecology

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2002

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tom 50

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nr 2

Investigations on the Upper Vistula River course (from 11 to 337 km) in years 1997-1998 comprised: chemistry of water and sediments, indicators of water quality, such as bacteriological indices, metabolic activity of seston, phytoseston indicator taxa, algal growth test, zooseston assemblages, benthic diatom indices and occurrence of oligochaetes fauna. The pollution impact was reflected by distinct changes in chemistry of water and sediments, as well as by bacteriological indicators and alga growth test. No distinct changes have been noted in the structure of benthic diatom communities. Some improving tendency in the water quality was evident between 248-337 km of the river course, where the most tolerant to pollution taxa were partly replaced by less tolerant species. Some changes revealed an increase in numbers of beta-mesosaprobic and meso-eutraphentic Chlorococcales, which dominated over dense populations of cyanobacteria. Benthic animals assemblages indicated a decrease in pollution level between 248-337 km of the river course. In the case of zooseston no evident effect was observed. The sector of the river received on 95 km high load of chlorides from coalmines until last site on 337 km. Load of chlorides was constant, whereas their concentrations diminished. Nitrate concentration arose together with loadings. Phosphate concentrations were constant similarly to loadings, excluding site at 337 km of the rivercourse, where load arose. COD had similar pattern as chlorides. It seems to be better to operate on a greater number of specialised indices or parameters than mixed them into one, which might be confusing index.

7

Distribution of polychlorinated biphenyls [PCBs] in the pelagial of the Pomeranian Bay

67%

Wodarg D., Graeve M.

Oceanological Studies

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1996

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tom 25

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nr 4

Ograniczanie wyników

2 Polish Journal of Ecology

1 Acta Biologica Silesiana

1 Acta Hydrobiologica

1 Oceanological Studies

1 Oceanological and Hydrobiological Studies

1 Roczniki Państwowego Zakładu Higieny

2 Starzecka A.

1 Bednarz T.

1 Bucka H.

1 Graeve M.

1 Hul M.

1 Lawniczak A. E.

1 Niesler A.

1 Pietrzak-Flis Z.

1 Wodarg D.

1 Zurek R.

1 2010

2 2002

1 2000

1 1996

1 1987

1 1963

Formation of the structure of Ciliata seston communities in the River Łyna (Northern Poland)

Upper Vistula River: response of aquatic communities to pollution and impoundment. V. Photosynthetic and respiratory activity of seston

Poziom ogólnej radioaktywności beta i gamma sestonu i perifitonu wybranych zbiorników wodnych

Ocena jakosci wody potoku Slepiotka na podstawie badan sestonu i bentosu

The role of emergent macrophytes in nutrient cycling in Lake Niepruszewskie (Western Poland)

Upper Vistula River: response of aquatic communities to pollution and impoundment. XI. Research synthesis

Distribution of polychlorinated biphenyls [PCBs] in the pelagial of the Pomeranian Bay