AMR mechanism composition is environment-structured

Claim

Resistance mechanisms vary systematically by environment. Soil and aquatic contexts show much stronger metal-resistance components than human-gut contexts.

Review Brief

What changed: this claim is now part of the metal-AMR co-selection path and must travel with stronger taxonomy, habitat, and mobile-context caveats.

Why review matters: reviewers should confirm that environment structure is not being treated as direct causation or contaminant selection without controls.

Evidence to inspect:

• amr_environmental_resistome for environment composition.
• amr_pangenome_atlas for AMR family and genome-background structure.
• resistance_hotspots for contaminated-site relevance.
• Metal-AMR co-selection readiness for required controls.

Questions for reviewers:

• Are soil, aquatic, host-associated, and contaminated environments defined consistently?
• Which taxonomy or sampling controls are required before reuse?
• Does metal-resistance composition imply exposure, ecology, mobile-element history, or all three?
• Should this claim link explicitly to prophage/mobile covariates?

Why It Matters

This makes contaminated-site AMR and metal co-selection a natural BERDL-scale research direction.

Caveats

Environment labels can be sparse, ambiguous, or phylogenetically confounded. Claims need stratified or phylogenetically aware tests.