Reef Aggregation Index (AF_i)

OGC Feature profile carrying per-taxon dimensionless reef aggregation index AF_i used by the reef-biomass equation. Treated as an OIM variable / indicator binding — one record per evidence basis (e.g. Degraer 2020 prior). Per-taxon rows carry scientificName, AphiaID, AF_i value, validityScope, and evidence URI.