pioneer

noun 0.721

keystone species

noun 0.682

pioneering

noun 0.647

primary producer

noun 0.605

invasive species

noun 0.603

first mover

noun 0.573

groundbreaker

noun 0.541

pacesetter

noun 0.532

vanguard

noun 0.525

trailblazer

noun 0.523

progenitor

noun 0.506