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What is ecological succession?
When an area is destroyed and then replaced with different organisms that colonize and restore the land.
What is primary succession?
Primary succession is the process of restoring a destroyed area that has rocks.
What is secondary succession?
Primary succession is the process of restoring a destroyed area that has soil.
What is the first group of organisms to colonize a destroyed are called?
Pioneer species
Which species can live on bare rock?
Moss and lichen
What causes the start of primary succession?
Volcanoes or glaciers
What causes the start of secondary succession?
Natural disasters and human influence
What will an area look like 5 years after primary or secondary succession begins?
A thriving area that is still growing.
What will an area look like 100 years after primary or secondary succession begins?
It will be a climax community and will be fully restored to the way it was before the land got destroyed.
What is a climax community?
An area that has already reached its peak capacity it can’t grow any more.
Nitrogen fixing bacteria
Use nitrogen from the air to produce ammonia.
Nitrifying bacteria
Convert ammonia to nitrites and nitrates.
Bacteria of decay
Break down proteins of dead plants and animals and release ammonia.
Denitrifying bacteria
Break down ammonia and release nitrogen into the air.
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