🚨Starting in 30 minutes (Friday 12/09 15:30 EU), Susann Müller (UFZ Leipzig) will present the talk

Ecological forces dictate microbial community assembly processes in bioreactor systems

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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.

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.

📝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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The bigger the system, the longer the effective distances needed to attain high switching capacity. Microbial systems that exhibit periodicity displayed effective distances optimal for a specific number of taxa.

If the distances become effectively too short it becomes analogous to disorder, whereas if the distances become too long it becomes analogous to order. Microbial systems exhibit intermediate distances that increase their switching capacity.

Transitions from one composition to another are proportional to the size of feasibility domains (compatible environmental conditions) and inversely proportional to their distance in environmental parameter space.

Microbial systems can be characterized by structured transitions mapping the continuous space of environmental conditions to a discrete qualitative space of possible microbial compositions.

The week begins with a new Author Summary!

"Structured community transitions explain the switching capacity of microbial systems"

Chengyi Long, Jie Deng, Jen Nguyen, Yang-Yu Liu, Eric J. Alm, Ricard Solé, and Serguei Saavedra - PNAS 2024

www.pnas.org/doi/10.1073/...