QLS Seminar - Mon. 10 February 14h30 - Deterministic vs. Stochastic Dynamics in Competitive Communities: Insights from Network Structures and Consumer-Resource Models

[Quantitative Life Sciences]

Dear All,

On Monday, 10 February at 14:30 CET, Prof. Nadav Shnerb (Bar-Ilan 
University) will give a seminar titled:

*Deterministic vs. Stochastic Dynamics in Competitive Communities: 
Insights from Network Structures and Consumer-Resource Models
*

_Abstract:_

The coexistence of competing species presents a challenging theoretical 
puzzle. Over the years, various approaches have been proposed to address 
this issue - some assuming that the dynamics is primarily deterministic, 
with the observed species representing a stable equilibrium, while 
others suggest that the dynamics is largely stochastic or chaotic, 
leading to an unstable community composition. In recent years,  a few  
studies have attempted to integrate both perspectives.

In this seminar, several results related to different aspects of these 
analyses will be presented:

 1.

    It will be shown that in a deterministic system, the local community
    exhibits a nested structure when interactions are symmetric and a
    hyperuniform structure when interactions are asymmetric.

 2.

    Under neutral dynamics with environmental stochasticity, the
    abundance distribution follows a power law and can support either
    egalitarian or dominant distributions.

 3.

    An analysis of consumer-resource models reveals the relationships
    between interaction strength between two species (which reflects
    niche overlap) and the correlations in their abundance and growth
    rate fluctuations.

Indico: https://indico.ictp.it/event/10954/
_
The seminar will take place in the *Common area*, Ex SISSA building, 
Second floor, via Beirut 2_
__
You are all most welcome to attend!

Best regards,
Erica

Erica Sarnataro
Group Secretary
Quantitative Life Sciences
The Abdus Salam International Centre for Theoretical Physics (ICTP)
Trieste, Italy
Tel. +39-040-2240623
www.ictp.it/research/qls.aspx
e-mail: qls at ictp.it
<https://www.ictp.it/home/ictps-60th-anniversary>