Diversity and assemblage patterns of microorganisms structured by the groundwater chemistry gradient in spring fensVendula Křoupalová, Věra Opravilová, Jindřiška Bojková and Michal HorsákAnn. Limnol. - Int. J. Lim., 49 3 (2013) 207-223DOI: https://doi.org/10.1051/limn/2013056