Trophic Disequilibrium Veto
Cross-Domain Ecosystem Decay Modelling
Spray decisions made without accounting for predator-prey ecosystem dynamics can eliminate the beneficial populations that provide cost-free pest suppression. The TDPV-G engine (M221) models predator-prey (Coccinella → Aphis) and parasitoid-host (Trichogramma → Helicoverpa egg) directed graphs with first-order decay forecasts across a 1–168 h horizon. A natural-suppression factor exceeding 0.40 triggers a veto recommendation passed to the IPM engine.
Capability specification
- 01
Directed trophic graph: predator-prey and parasitoid-host edge types with EPPO-coded nodes
- 02
First-order decay forecast over a configurable 1–168 h horizon
- 03
Predator-modulated suppression factor computation with 0.40 veto threshold
- 04
Five-sector decay domain coverage: agriculture, apiary, energy corridor, construction habitat, disaster-area ecology
- 05
51-test green suite covering graph edge cases, decay math boundaries, and cross-domain veto cascade
How it works
Graph Construction
EPPO-coded organism observations are submitted as trophic graph nodes. Predator-prey and parasitoid-host relationships are registered as directed edges with observed abundance counts.
Decay Forecast
First-order exponential decay is applied to each node's abundance over the forecast horizon. The predator abundance modulates the decay rate of its prey nodes, producing a predator-suppression factor.
Veto Emission
When the suppression factor for a pest species reaches or exceeds 0.40, a natural-control veto bundle is generated and forwarded to the IPM decision engine where it ranks above ETL/EIL threshold evaluation.
Standards we follow
- STD-01
EPPO PM 1 — Pest Risk Taxonomy (trophic graph node identifiers)
- STD-02
EFSA ETL/EIL — Economic thresholds (veto interacts with IPM threshold evaluation)
- STD-03
NIST FIPS 180-4 — Secure Hash Standard (chain hash)
Areas served
This capability is deployed across 14 operational regions. Regulatory alignment details vary by jurisdiction — consult engineering for jurisdiction-specific deployment guidance.
Frequently asked questions
How is the 0.40 suppression threshold determined?
The 0.40 value is the operator-registered suppression threshold for the specific predator-pest EPPO pair. Operators set this value per registration based on field observation data. The platform enforces the threshold structurally but does not prescribe its value — that determination belongs to the agronomist or ecologist.
Talk to engineering
For capability evaluation, integration guidance, and deployment scoping, submit a brief to the engineering team.
Submit engineering brief