Keystone Species ·
Tiny in Number, Huge in Effect
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.com · Paine 1966 · remove it → community collapses
Pisaster removal
15 → 8 species
Otter intake
~25 %/day urchins
Stage
healthy intertidal
Keystone predator (Pisaster)
Mussel (competitive dominant)
Other native species
Diversity index
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.com · Keystone Species