|Cyanobacteria (photo Wiki Commons)|
Climate change is having an effect on these critters, but we don't know much about it yet. The main species that grows in hot deserts, Microceleus steenstrupii, should do fine for a time, but other species, equally important to the environment, might not. Hopefully, scientists are doing more research to find out what's going on in those crusts. And when you're walking over a soil crust, be sure to thank the tiny creatures that make it possible!