From the cultured bacteria, 92 different bacterial species were observed by
tentative 16SrRNA gene identification, and 37 different bacterial genera were
identified. The diversity was found to be similar during daytime and nighttime,
except for decreased representation of the family taxa Bacillaceae during
nighttime (6 % compared to 32 % during daytime). The results obtained can be
used as indicators for the numbers of replicate samples needed in order to
perform in-depth studies regarding bacterial every-day diversity. Tentatively
species identification indicated that 19 air samples was a limited number for
such comprehensive investigations, as few species were observed in more than
two air samples. Use of supplementary air samplers should also be considered
when optimizing the results.