Affiliation: | 1. Institute of Agrophysics, Polish Academy of Sciences, Do?wiadczalna 4, 20-290, Lublin, Poland 2. Department of Hydrobiology, University of Life Sciences in Lublin, Dobrzańskiego 37, 20-262, Lublin, Poland 3. Polish Academy of Sciences Centre for Ecological Research, Experimental Station, Nieca?a 18, 20-080, Lublin, Poland
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