📝New Author's summary about "Complexity-stability relationships in competitive disordered dynamical system" O Mazzarisi, M Smerlak and "Diversity begets stability: Sublinear growth and competitive coexistence across ecosystems" I Hatton, O Mazzarisi, A Altieri, M Smerlak - ThreadSky

theobiophysics.bsky.social • 93 days ago

📝New Author's summary about

"Complexity-stability relationships in competitive disordered dynamical system" O Mazzarisi, M Smerlak

and

"Diversity begets stability: Sublinear growth and competitive coexistence across ecosystems" I Hatton, O Mazzarisi, A Altieri, M Smerlak

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theobiophysics.bsky.social•93 days ago

Subtle changes in how populations grow and interact have implications for ecological theory. In two new papers, we study the role of relative scaling in growth and competition in the stability properties of competitive systems.

theobiophysics.bsky.social•93 days ago

The relationship between diversity and stability in ecosystems has puzzled ecologists for decades. Most theoretical results indicate that communities will be less stable when more species are present, at odds with what classic observations suggest.

theobiophysics.bsky.social•93 days ago

We considered competitive communities where each population grows sublinearly with respect to its density and competes linearly. We show that increases in diversity enhance stability in this model. This is robust to alternative assumptions and generalized modeling frameworks.

theobiophysics.bsky.social•93 days ago

We also find that this sublinear model is consistent with several well-known macroecological patterns, recovering production-biomass scaling across ecosystems, as well as the species abundance distribution, mean-variance scaling, and size-density scaling.

theobiophysics.bsky.social•93 days ago

The positive diversity-stability relation is not determined by sublinear growth per se but by the relative scaling of self-interactions and competition. In general, if competition grows faster with density than self-interactions, diversity stabilizes, and vice versa.

theobiophysics.bsky.social•93 days ago

Read the full publications

https://doi.org/10.1103/PhysRevE.110.054403
https://science.org/doi/10.1126/science.adg8488

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