Path-integral solution of MacArthur's resource-competition model for large ecosystems with random species-resources couplings.
Chaos
; 31(10): 103113, 2021 Oct.
Article
em En
| MEDLINE
| ID: mdl-34717338
ABSTRACT
We solve MacArthur's resource-competition model with random species-resource couplings in the "thermodynamic" limit of infinitely many species and resources using dynamical path integrals à la De Domincis. We analyze how the steady state picture changes upon modifying several parameters, including the degree of heterogeneity of metabolic strategies (encoding the preferences of species) and of maximal resource levels (carrying capacities), and discuss its stability. Ultimately, the scenario obtained by other approaches is recovered by analyzing an effective one-species-one-resource ecosystem that is fully equivalent to the original multi-species one. The technique used here can be applied for the analysis of other model ecosystems related to the version of MacArthur's model considered here.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ecossistema
Tipo de estudo:
Clinical_trials
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article