P. A. Haas

Impossible ecologies: Interaction networks and stability of coexistence in ecological communities

This paper shows that the arrangement of interactions in ecological networks can significantly affect the stability of coexistence, identifying 'impossible ecologies' where stable coexistence is non-trivially impossible.

Stabilization of Microbial Communities by Responsive Phenotypic Switching

This paper shows that responsive phenotypic switching in microbial communities can stabilize coexistence, differing from stochastic switching, using two-species models and simulations.

Turing's diffusive threshold in random reaction-diffusion systems

The paper investigates whether the diffusive threshold for Turing instabilities decreases with more than two diffusing species, finding it becomes more likely to be physical as the number of species increases.

Nonlinear and Nonlocal Elasticity in Coarse-Grained Differential-Tension Models of Epithelia

This study derives a continuum theory for a differential-tension model of epithelia and shows how cell-level properties lead to linear, nonlinear, and nonlocal elastic behavior under compression.