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#disturbance frequency

2 public questions tagged with this topic.

BIODIVERSITY & IDH

According to IDH, at low disturbance frequency, diversity is low because of:

At low disturbance frequency, long intervals allow biomass to accumulate and competitive hierarchies to develop. Species that are highly efficient at capturing light, nutrients, space, or another limiting resource can suppress and eventually eliminate weaker competitors. This competitive exclusion reduces local diversity, especially when no spatial refuges or temporal fluctuations interrupt dominance. Intermediate disturbance may periodically remove dominant biomass, open recruitment sites, and permit colonizers and slower competitors to coexist. At the high-disturbance extreme, only tolerant

Ref: NCERT Biology Class 12, Ch. 15 Biodiversity and Conservation

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BIODIVERSITY & IDH

At high disturbance frequency, diversity is low due to:

Frequent or intense disturbance repeatedly removes biomass and interrupts population growth. Species that mature slowly, reproduce infrequently, or require stable habitat cannot complete their life cycles, leaving only disturbance-tolerant taxa, rapid colonizers, or organisms with resistant stages. This strong environmental filter reduces richness and often produces communities dominated by a few stress-tolerant forms. Under the intermediate disturbance hypothesis, diversity is therefore low at the high-disturbance end. “Generalist” may describe some survivors, but broad resource use is not th

Ref: NCERT Biology Class 12, Ch. 15 Biodiversity and Conservation

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