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#ecological dominance

2 public questions tagged with this topic.

Competitive species dominate in:

“Low disturbance, high nutrients” for competitive species dominate in. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Survivorship curves summarize age-specific mortality: Type I concentrates loss late in life, Type II approximates a constant hazard, and Type III concentrates loss early. They are empirical patterns, not rigid taxonomic rules. The remaining alternatives—“High stress and low nutrients”, “High disturbance, high stress”, “Arctic conditions”—refer to different states, processes, or sc

Ref: Plant Strategies and Vegetation Processes, Grime, 2nd Ed.

What increases the chance of dominant species being present?

Greater species richness increases the sampling probability that a highly productive or otherwise dominant species is included in a community. This selection effect can raise measured ecosystem function even without every species contributing a unique mechanism, because diverse assemblages draw more species from the regional pool. 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 throug

Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 20