Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund UNCERTAINTY ANALYSIS OF DIATOM PHYTOBENTHOS RESULTS OF RIVERS AND LAKES IN THE RIVER WEL BASIN Jan Błachuta, Joanna Picińska-Fałtynowicz INSTITUTE OF METEOROLOGY AND WATER MANAGEMENT WROCŁAW BRANCH, DEPARTMENT OF ECOLOGY

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund To test uncertainty of results of Polish diatom indices: IO for rivers and IOJ for lakes four replicates of qualitative and quantitative analyses (identification of idicator taxa and counting procedure) were done for selected samples (sites) RIVER SITES: Rumienica, Płośniczanka, Katlewka, Wel Szczupliny, Wel Koszelewki, Wel Piekiełko, LAKE SITES: Dąbrowa Mała 1, Grądy 1, Grądy 2, Zarybinek, Zwiniarz

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund RESULTS – values of IO index for Polish rivers and its modules RiverSlideTISIGRIO RUMIENICA 11,8491,9430,7470,658 RUMIENICA 21,8781,9460,7550,658 RUMIENICA 31,7171,9540,7290,622 RUMIENICA 41,8991,9820,6770,626 PŁOŚNICZANKA 12,5632,0040,6690,566 PŁOŚNICZANKA 22,5132,0430,7050,577 PŁOŚNICZANKA 32,5802,0210,7230,580 PŁOŚNICZANKA 42,6152,0500,6650,555 KATLEWKA 12,5791,9580,5730,537 KATLEWKA 22,5901,9920,6000,542 KATLEWKA 32,5301,9550,6220,558 KATLEWKA 42,6031,9820,5820,536

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund RiverSlideTISIGRIO WEL Szczupliny11,8181,9200,9680,737 WEL Szczupliny21,7431,9030,9520,739 WEL Szczupliny31,6651,8710,9680,755 WEL Szczupliny41,5771,8560,9730,765 WEL Koszelewki11,5481,6450,9970,799 WEL Koszelewki21,6271,6450,9910,790 WEL Koszelewki31,5271,6550,9830,795 WEL Koszelewki41,4751,6440,9860,802 WEL Piekiełko12,2252,0060,9450,686 WEL Piekiełko22,2612,0190,9090,669 WEL Piekiełko32,3572,0180,8960,657 WEL Piekiełko42,2302,0190,9180,675 RESULTS – values of IO index for Polish rivers and its modules

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund RESULTS – values of IOJ index for Polish lakes and its modules LAKESlideTJGRIOJ Dąbrowa Mała 11 1,862 0,838 0,824 Dąbrowa Mała 121,9180,8330,818 Dąbrowa Mała 131,7700,8250,824 Dąbrowa Mała 141,8410,7890,805 Grądy 11 1,5400,8680,855 Grądy 121,4180,8930,872 Grądy 131,6290,8600,846 Grądy 141,3620,8800,870 Grądy 21 2,4220,7000,734 Grądy 222,4500,6340,707 Grądy 232,6120,6280,695 Grądy 242,4980,7000,730 Zarybinek1 2,7650,3890,590 Zarybinek22,7110,3930,594 Zarybinek32,8860,3170,554 Zarybinek42,8140,3550,573 Zwiniarz1 1,5550,8580,850 Zwiniarz21,2510,9130,890 Zwiniarz31,3920,8980,876 Zwiniarz41,4380,8790,865

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund RIVER ParameterIOGRSITI Rumienica type 18 Mean0,6510,7271,9561,836 SD0,0170,0350,0180,082 95% confidence limit [CL]0,0160,0340,0170,080 Coefficient of variability [CV]2,64,80,94,4 Płośniczanka type 17 Mean0,5700,6902,0292,568 SD0,0120,0280,0210,042 95% confidence limit [CL]0,0110,0270,0210,041 Coefficient of variability [CV]2,04,01,01,6 Katlewka type 17 Mean0,5430,5941,9722,576 SD0,0100,0210,0180,032 95% confidence limit [CL]0,0100,0210,0180,031 Coefficient of variability [CV]1,93,60,91,2 STATISTICS

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund RIVER ParameterIOGRSITI Wel Szczupliny type 25 Mean0,7490,9651,8871,701 SD0,0130,0090,0290,103 95% confidence limit [CL]0,0130,0090,0280,101 Coefficient of variability [CV]1,80,91,56,1 Wel Koszelewki type 25 Mean0,7960,9891,6471,544 SD0,0050,0060,0050,063 95% confidence limit [CL]0,0050,0060,0050,062 Coefficient of variability [CV]0,6 0,34,1 Wel Piekiełko type 20 Mean0,6720,9172,0152,268 SD0,0120,0210,0070,062 95% confidence limit [CL]0,0120,0210,0070,060 Coefficient of variability [CV]1,82,30,32,7 STATISTICS

Polsko-Norweski Fundusz Badań Naukowych / Polish-Norwegian Research Fund STATISTICS LAKE ParameterIOJGRTJ Dąbrowa Mała type 3a Mean0,8180,8211,848 SD0,0090,0220,061 95% confidence limit [CL]0,0090,0220,060 Coefficient of variability [CV]1,12,73,3 Grądy St. 1 type 3a Mean0,8610,8751,487 SD0,0120,0140,120 95% confidence limit [CL]0,0120,0140,118 Coefficient of variability [CV]1,41,68,1 Grądy St. 2 type 3a Mean0,7160,6652,496 SD0,0190,0400,084 95% confidence limit [CL]0,0190,0390,082 Coefficient of variability [CV]2,75,93,4 Grądy type 3a (altogether) Mean0,7890,7701,991 SD0,0790,1150,547 95% confidence limit [CL]0,0540,0800,379 Coefficient of variability [CV]10,015,027,5 Zarybinek typ e3b Mean0,5780,3632,794 SD0,0180,0350,074 95% confidence limit [CL]0,0180,0350,073 Coefficient of variability [CV]3,29,72,7 Zwiniarz type 3b Mean0,8700,8871,409 SD0,0170,0240,126 95% confidence limit [CL]0,0170,0230,123 Coefficient of variability [CV]1,92,78,9

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