equilibrium and change
DESCRIPTION
Equilibrium and change. The story of Krakatoa. August 27, 1983 The island was destroyed along with every living thing in its lush forests The remaining part of the island was buried in over 40 m of volcanic ash. Within 9 months, life returned to the island! How? - PowerPoint PPT PresentationTRANSCRIPT
Equilibrium and change
The story of Krakatoa
• August 27, 1983• The island was destroyed
along with every living thing in its lush forests
• The remaining part of the island was buried in over 40 m of volcanic ash
• Within 9 months, life returned to the island!• How?– Seeds were carried to the island by wind, the sea,
and birds.– Within 100 years, a lush rainforest community had
been established!
• Lupines were the first plants to appear after the eruption of Mount St. Helens, in Washington State
Succession
What is the difference between primary and secondary succession?
Case Study: Kirtland’s Warbler
• Dense, young jack pine forest ONLY!
• Nest on the ground.
• Forage in low parts of the trees.
Why jack pine?• Their cones only open after the trees have
been cleared away by forest fire or after logging (in the summer sun)
What is the importance of succession?