identifier: METPO:1001013
label: optimum pH observation
trait_category: OBSERVATION
term_kind: CLASS
mapping_status: DEPRECATED
parent_traits:
- METPO:1001000
curation_history:
- timestamp: '2026-05-05T01:35:46.927756+00:00'
  curator: seed_from_metpo
  action: SEEDED_FROM_METPO
  changes: imported from data/raw/metpo.owl (CLASS)
  llm_assisted: false
- timestamp: '2026-05-10T00:00:00-07:00'
  curator: codex
  action: DEPRECATED_PROPERTY_RECORD
  changes: Deprecated generic observation/value carrier; later replacement should
    use more specific trait records that combine the observation relation with
    growth context, measured quantity, chemical, value range, or other entity.
  llm_assisted: true
- timestamp: '2026-05-17T15:30:00-07:00'
  curator: claude
  action: DEPRECATION_CONFIRMED_AS_OUT_OF_SCOPE
  changes: |
    DEPRECATED status confirmed as final after the predicate+class composition
    pivot (#54/#55/#56). This record's observation-shape modelling is out of
    scope for TraitMech; the trait vocabulary + mechanism need is met by the un-
    deprecated METPO predicates, and per-organism numeric observations belong
    downstream (KG-Microbe / BacDive). See
    docs/DEPRECATED_REPLACEMENT_PROPOSAL.md, section 'Observation-value records
    stay deprecated', for the rationale.
  llm_assisted: true