Lottery Competition¶
Lottery competition allocates scarce vacant sites among competing recruits through a chance-dependent replacement rule.
Core Idea¶
In lottery competition, multiple species supply recruits for a limited vacant site, and chance helps decide which recruit occupies it.
Cross-Domain Echoes¶
See how this entry connects to another domain.
Scope of Application¶
Ecologists model replacement in site-limited communities, especially the original territorial-fish system. In that model, sufficiently varying birth rates and overlapping adult generations can support coexistence; highly variable, negatively correlated death rates can instead make extinction likely. Randomness alone does not ensure diversity.
Boundary: Generic random death or neutral drift need not contain a vacancy-and-recruitment lottery.
Clarity¶
Name the vacant site, competing recruits, and allocation rule. Distinguish a single winner from long-run persistence.
Manages Complexity¶
The model reduces complex recruitment to repeated site openings and occupancy outcomes.
Abstract Reasoning¶
Define turnover and recruit supply, specify each species' occupancy probability, then test persistence under adult survival and the particular birth- or death-rate variation assumed. One local win cannot establish long-run coexistence.
Knowledge Transfer¶
Published plant competition models also allocate vacant establishment sites by lottery, although their mechanisms and predictions differ from the original reef-fish model. The parent is Competition by strict presupposition of rival recruits, not by treating the ecological model as a kind of abstract competition operation.
For example, after a territorial fish dies, larvae of several species compete for its vacant territory; one becomes its next occupant.
Relationships to Other Abstractions¶
Current abstraction Lottery Competition Domain-specific
Parents (1) — more general patterns this builds on
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Lottery Competition presupposes Competition Prime
The lottery replacement model requires competing recruits for scarce vacant sites.
Hierarchy path (1) — routes to 1 parentless root
- Lottery Competition → Competition
Neighborhood in Abstraction Space¶
Lottery Competition sits in a sparse region of the domain-specific corpus (95th percentile for distinctiveness): few abstractions share its structure, so a faithful description tends to retrieve it precisely.
Family — Selection, Speciation & Experimental Evolution (22 abstractions)
Nearest neighbors
- Bid Rent Theory — 0.81
- Conservation Development — 0.78
- Truncation selection — 0.78
- Protected Self-Directed Time — 0.77
- Residence Time (Statistics) — 0.77
Computed from structural-signature embeddings · 2026-10-08