Mediating role of food web structure in linking diversity to multidimensional stability: Evidence from global marine ecosystems

The diversity-stability relationship persists as a central ecological debate, as existing work primarily examines direct diversity and structural drivers, while empirical evidence clarifying how direct and structure-mediated pathways jointly shape ecosystem multistability remains limited. Here, we analyzed 217 global marine food webs, quantifying structural properties and multidimensional stability to evaluate how diversity and structure jointly influence stability. Our analyses reveal that diversity is consistently linked to stability through dual pathways: positively associated with resistance and resilience via indirect structural mediation, yet negatively correlated with local stability unless interaction strength is accounted for. Critically, omitting structural mediation yields a net negative diversity-stability correlation, whereas integrating food web structure uncovers context-dependent positive relationships, underscoring structural metrics as pivotal explanatory variables. Our findings reconcile the diversity-stability debate by showing that the food web structure mediates context-dependent stability outcomes—integrating direct and indirect pathways resolves contradictions and advances actionable metrics for conservation strategies resilient to environmental changes.

• Publication year

  2025

• Venue

  Science Advances

• Publication date

  2025-10-10

• Fields of study

  Medicine, Environmental Science

• Identifiers
  DOI 10.1126/sciadv.adv3841PMID 41071869PMCID 12513428
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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