Figure 3.
CARD-FISH and MAR results for the two alpine karst springs revealed that Bacteria (Eub; probe-mix of EUB338, EUB338II and EUB338III) comprise the largest fraction of the microbial community in both springs. About 10 % of the community were identified as Euryarchaea (probe EURY806) and Crenarchaea (probe CREN537). MAR-active cells were found in both prokaryotic fractions. The picture depicts CARD-FISH positive cells showing green fluorescence, and two cells that are additionally surrounded by black silver grains indicating 3H-leucine uptake. All counts were made in relation to DAPI counts.