A community with dominant species influencing function supports:
When a dominant or exceptionally influential species controls much of an ecosystem process, the pattern fits the keystone view. Functional output then depends more on the presence of that species than on species number alone, and its removal can cause a disproportionate change. Species richness counts taxa but does not show their abundance, traits, or interaction strengths. Dominant species may control bulk process rates, rare species may provide specialized functions or future insurance, and predators can restructure whole food webs through indirect effects. Functional groups summarize role o
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 20
