Question

Which best defines a pioneer species?

Answer 1

A pioneer species is a hardy plant or algae that can take damage from a hard environment. They return after a disturbance. They increase a diversity in a region.

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Answer 2

A pioneer species is a hardy plant species that, after a damaging event like a fire or flood, is the first to grow and colonize that ecosystem.
They 'set the stage' for other plants, resulting in a greater biodiversity than before the event.
Usually, a pioneer species is a lichen, bacteria or fungi.  

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