AA_secondarysuccsession_P5

By speedypiglet

  • Eruption

    Eruption
    On May 18 1980, Mt St Helens erupted.

  • Damage

    Damage
    The eruption left behind dry lava flows and ash in the air stream.

  • Annual Plants

    Annual Plants
    In 1982 annual plants began to sprout.

  • Grasses

    Grasses
    3-4 years after the eruption grasses started to grow.

  • Shrubs and Small Trees

    Shrubs and Small Trees
    5-150 after the eruption shrubs and small trees will grow.

  • Mature Forest

    Mature Forest
    150+ years after the eruption a mature forest will develop.