One thing that should be noted about that study is that is takes samples from a number of lakes in the northern hemisphere only, and in the study it states that the diversity of the bacteria noted in the study is high because of varying environmental conditions from the group of lakes as a whole.
It would take into account conditions such as surface runoff and different wildlife that frequent the different lakes, conditions that our domestic ponds do not have.
The point is that my pond may have different bacteria than a pond in Florida. Moose that frequent my pond, for example, may feed different bacteria than wildlife indigenous to Florida would feed different bacteria in a Florida pond.
Aerial dispersal of bacteria was expected to be equal to all ponds studied.
Food for thought.
