Pollinator Coverage

Definition

Pollinator Coverage is the percentage of receptive bloom-area that received at least one confirmed pollination pass within its receptivity window during the trailing hour. The receptive denominator is the bloom-area the Spectral Canopy Array identifies as open and receptive; the numerator is the subset for which the swarm logged a confirmed visit. It measures pollination effectiveness — whether flowers were actually serviced — as distinct from fleet charge (VC-MET-304), which measures only the means to do so.

Why it matters

Unserviced receptive bloom does not set fruit; coverage shortfalls translate directly into lost yield and broken propagation schedules, and the loss is unrecoverable once the receptivity window closes. Because receptivity windows are short, a coverage dip must be caught and backfilled within the same hour. CHLORA tracks coverage per cell, dispatches reserve drones to under-serviced bloom, and headlines the facility figure on the Operations Dashboard as a primary productivity indicator.

Formula

Coverage is the area-weighted fraction of receptive bloom serviced within window:

Coverage = 100 · ( A_serviced / A_receptive )
           area-weighted, over trailing 60 min

where:
  A_receptive = bloom-area flagged OPEN_RECEPTIVE by the
                Spectral Canopy Array in the window
  A_serviced  = receptive area with ≥ 1 confirmed swarm pass
                logged before its receptivity window closed

Confirmation:
  a pass counts only if drone proximity + actuation event are
  both logged (CHLORA fuses swarm task log + mesh position).

Gap tracking (published alongside):
  A_missed = A_receptive − A_serviced
  per-cell coverage map drives reserve-drone backfill dispatch.

If A_receptive < 0.5% of canopy (off-bloom), metric is reported
as N/A rather than 100% to avoid a misleading full-coverage read.

Inputs

Units & Scale

Coverage is a percentage on a 0–100 scale, area-weighted and reported to one decimal place. It is not a simple cell average — facility coverage is weighted by each cell's receptive area so a large under-serviced cell is not masked by many small fully-serviced ones. When receptive bloom-area is negligible the metric reports N/A rather than a misleading 100%. A DEGRADED flag is set if the Spectral Canopy Array pass is missed.

Sampling & Source

• Rolled up every 1 hour by CHLORA over the trailing 60-minute receptivity window.
• Receptive denominator from the Spectral Canopy Array; serviced numerator from the swarm task log fused with PhytoSense Mesh position.
• A pass is confirmed only when proximity and actuation events both log before the window closes.
• Stale handling: missed Array pass → DEGRADED and last receptivity map carried; off-bloom → reported N/A.

Thresholds

Recent Trend

Facility area-weighted coverage in percent, last 14 hourly roll-ups:

Interpretation Guidance

Related Metrics

Related SOPs

• SOP Library — pollination scheduling and shortfall-recovery procedures.
• Reserve-drone backfill & yield-loss assessment on WARN/CRIT — see the SOP Library.
• Coverage-map monitoring & receptivity-window alerts — Monitoring Systems.