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Ecology's Smallest Ingredients May Carry the Largest Leverage
A new framework defines how rare molecules can reorganize whole biological communities far beyond their abundance.
Summary
A new framework defines how rare molecules can reorganize whole biological communities far beyond their abundance.
A Trends in Ecology & Evolution article proposes four tests for a keystone molecule: it must be rare, exert a large effect, influence more than one target and resist easy substitution. The framework draws on sea-slug alderenes that reorganize mudflat communities across several animal phyla and on serotonin and ectoine that reshape a stressed plant's root microbiome. It is a research agenda built from recent examples, not proof that every ecosystem has one master chemical.
Why it matters
A new framework defines how rare molecules can reorganize whole biological communities far beyond their abundance.
Limits and context
- It is a research agenda built from recent examples, not proof that every ecosystem has one master chemical.
Key claims
A new framework defines how rare molecules can reorganize whole biological communities far beyond their abundance.
Qualification: It is a research agenda built from recent examples, not proof that every ecosystem has one master chemical.
Evidence: source-2026-07-27-016
Sources
- Leibniz Institute via Phys.org: Keystone molecules in ecologyLeibniz Institute via Phys.org · official announcement
Corrections
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