Metal type diversity predicts ecological niche breadth

Claim

The breadth of a genus' metal-resistance repertoire is associated with broader ecological niche breadth after phylogenetic correction. The useful signal is metal type diversity, not simply total AMR gene burden.

Review Brief

What changed: metal resistance breadth now has a field-ecology claim that connects pangenome-derived resistance summaries to MicrobeAtlas niche breadth.

Why review matters: the claim could influence contaminated-site and bioprospecting proposals, but it is genus-level and observational. Reviewers should decide how much weight it can carry.

Evidence to inspect:

• PGLS model linking metal type diversity to Levins niche breadth.
• Comparison with total AMR burden and core AMR fraction.
• Genus-level aggregation and GTDB phylogenetic matching.
• Sensitivity to prevalence filtering and MicrobeAtlas environment coverage.

Questions for reviewers:

• Is metal type diversity biologically interpretable enough to use as a proposal feature?
• Should the claim stay genus-level, or can it be safely projected to species or site-level analyses?
• What sensitivity check would make this claim more reusable: stricter AMR filters, environment rarefaction, or alternate niche-breadth metrics?
• Should this claim link to a new derived product for metal-resistance breadth features?

Evidence

microbeatlas_metal_ecology links pangenome-derived metal AMR summaries to MicrobeAtlas niche breadth across 1,264 genera and reports that metal type diversity remains a significant PGLS predictor in the bacterial subset with AMR data.

Why It Matters

This gives critical-mineral and field-ecology pages a stronger bridge from gene repertoires to ecological behavior. It also sharpens co-selection proposals: a site model should ask whether exposure broadens the spectrum of metal types tolerated, not only whether resistance genes are present.

Caveats

The claim is genus-level and observational. It depends on MicrobeAtlas environment coverage, GTDB phylogenetic matching, and AMR marker definitions. Strict prevalence filtering reduces power, so niche breadth estimates should travel with sensitivity checks.

Promotion Criteria

Promote this claim after a reviewer confirms that the PGLS result is robust enough for synthesis use and that all downstream pages preserve the genus-level, observational scope.