Look at it this way. Bacterial roles are the same all over the planet. Hypothetical example to demonstrate:
Let's just say Element X is a common plant material. Like cellulose, lignin, hemicellulose- whatever.
In a certain region of the Congo, Element X is broken down by a very efficient local microbe, Congo-1. Element X is common in plant material all over the world, however In the Congo, the Congo-1 microbe breaks down Element X better than any other local microbe, as Congo-1 is best adapted to the congos unique humidity, drought, average temp, UV levels, and thousands of other variables
Element X being broken down in the UK, however is accomplished by UK-5. Best suited for the cooler temps, higher humidity, lack of drought. Congo-1 won't work as well or even likely survive long in the UK. UK-5 would likely also perish in the Congo, yet both Congo-1 and UK-5 perform the exact same task.
So there are very specific regional microbes best suited to do your job, and they're already in the air around you. Do a Rice culture and collect and amplify is my advice