Answer:
Abiotic factors include all the non living factors that affect the living organisms for survival such as light, wind, heat, temperature etc.
In mountain Saint Helens,abiotic factors hold critical position for the colonization and survival of animals and plants.
For example: Wind was an important source of transferring seeds, spiders and insects in the blast zone of the mountain after the volcanic eruption.
Plant survivors, landscape , rocks and burrows played the role of nets that caught the seeds. This enables the establishment and survival of plant specie in eruption zone.
Therefore, abiotic factors have crucial role in succession after the eruption in MT Saint Helens.
Hope it help!