Oskar Hallatschek

Nov 21, 2024 | nature.com | Joao A. Ascensao |Kristen Lok |Oskar Hallatschek

AbstractLarge stochastic population abundance fluctuations are ubiquitous across the tree of life, impacting the predictability and outcomes of population dynamics. It is generally thought that abundance fluctuations with a Taylor’s law exponent of two do not strongly impact evolution. However, we argue that such abundance fluctuations can lead to substantial genotype frequency fluctuations if different genotypes in a population experience these fluctuations asynchronously.

Mar 5, 2024 | journals.plos.org | Jonas Denk |Oskar Hallatschek

Loading metrics Open Access Peer-reviewedResearch Article ? This is an uncorrected proof. Citation: Denk J, Hallatschek O (2024) Tipping points emerge from weak mutualism in metacommunities. PLoS Comput Biol 20(3): e1011899. https://doi.org/10.1371/journal.pcbi.1011899Editor: Jacopo Grilli, Abdus Salam International Centre for Theoretical Physics, ITALYReceived: October 10, 2023; Accepted: February 6, 2024; Published: March 5, 2024Copyright: © 2024 Denk, Hallatschek.

Feb 25, 2024 | biorxiv.org | Joao A. Ascensao |Kristen Lok |Oskar Hallatschek

AbstractLarge stochastic population abundance fluctuations are ubiquitous across the tree of life, impacting the predictability of population dynamics and influencing eco-evolutionary outcomes. It has generally been thought that these abundance fluctuations do not strongly impact evolution, as the relative frequencies of alleles in the population will be unaffected if the abundance of all alleles fluctuate in unison.

May 31, 2023 | nature.com | Oskar Hallatschek |Knut Drescher |Jens Elgeti

AbstractThe fascinating patterns of collective motion created by autonomously driven particles have fuelled active-matter research for over two decades. So far, theoretical active-matter research has often focused on systems with a fixed number of particles. This constraint imposes strict limitations on what behaviours can and cannot emerge. However, a hallmark of life is the breaking of local cell number conservation by replication and death.