Island Effect
Updated 2026-09-10
INTRODUCTION
English translation pending.
CORE DEFINITION
The island effect describes how isolation gives an island its distinctive ecology, with the number of species proportional to the island's area and inversely proportional to its distance from the mainland. As a model it names the double edge of isolation: a closed system follows its own evolutionary path, which protects its uniqueness and at the same time limits its diversity and its resources.
SCAFFOLDING EFFECT
Reduce cognitive load
- Read both edges: for any isolated team or community, name what the isolation protects and what it starves. - Use the area-distance frame: judge vitality by size and by distance from the mainland. - Decide the opening: choose what the isolation is worth before opening or sealing it.
Anchor fast decisions
Isolation cuts the flow of new arrivals and new pressures, so what exists evolves along its own line and what is missing never arrives. The same wall that preserves a distinctive culture keeps out the diversity that would otherwise replenish it, which is why isolation's gains and losses are two faces of one boundary.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Insular_biogeographyverified
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