Pioneer Hollowdome

The pioneer hollowdome replaced its ancestor the hollowdome. It has developed large strong roots which it uses to break apart even the most tough soil. Its major success lies in its roots which allow for the growth of the nitrogen fixing microbe called the nixus. It has developed a symbiotic relationship with the nixus by creating nodules for them to grow in and in return the nixus produces a nitrogen compound that helps pioneer hollowdome grow. When pioneer hollowdome die the fixed nitrogen is released making it available to other mountain flora and this helps to fertilize the rocky soil. In addition as pioneer hollowdome not only spreads nixus to new biomes but nitritus, nitratus and denitritus, thus completing the nitrogen cycle in barren biomes. Other than that it is the same as its ancestor. It was so successful it also replaced its relative the greenhouse cryodome.