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#drivers of change

2 public questions tagged with this topic.

ECOLOGICAL SUCCESSION

In autogenic succession, change is driven by:

Autogenic succession is generated by the organisms already occupying a site. Their growth and metabolism modify resource levels and physical conditions—for example, by shading, litter accumulation, nitrogen fixation, or soil development—creating feedbacks that favor some later species and disadvantage others. Successional trajectories emerge from dispersal, establishment, species interactions, and organism-driven environmental change. Priority effects can make arrival order important, while retained soil and propagules strongly accelerate recovery after disturbance. Facilitation, tolerance, an

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

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Applied Ecology

Which factor is NOT a major driver of biodiversity change?

Habitat loss, overharvesting, and introduced species are major direct drivers of biodiversity decline. They reduce population sizes, fragment habitats, remove organisms faster than replacement, or alter competition, predation, and disease. Solar radiation is a fundamental environmental energy source and varies naturally with latitude and season; it is not normally listed as a contemporary anthropogenic driver comparable to land-use change, exploitation, invasive species, pollution, and climate change. Mechanistic interpretation connects individual physiology and species interactions to populat

Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology

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