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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Enhanced species coexistence in Lotka-Volterra competition models due to nonlocal interactions

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Author(s):
Maciel, Gabriel Andreguetto ; Martinez-Garcia, Ricardo [1]
Total Authors: 2
Affiliation:
[1] Univ Estadual Paulista UNESP, ICTP South Amer Inst Fundamental Res, Rua Dr Bento Teobaldo Ferraz 271, Bloco 2, BR-01140070 Sao Paulo, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Theoretical Biology; v. 530, DEC 7 2021.
Web of Science Citations: 0
Abstract

We introduce and analyze a spatial Lotka-Volterra competition model with local and nonlocal interactions. We study two alternative classes of nonlocal competition that differ in how each species' characteristics determine the range of the nonlocal interactions. In both cases, nonlocal interactions can create spatial patterns of population densities in which highly populated clumps alternate with unpopulated regions. These non-populated regions provide spatial niches for a weaker competitor to establish in the community and persist in conditions in which local models predict competitive exclusion. Moreover, depending on the balance between local and nonlocal competition intensity, the clumps of the weaker competitor vary from M-like structures with higher densities of individuals accumulating at the edges of each clump to triangular structures with most individuals occupying their centers. These results suggest that long-range competition, through the creation of spatial patterns in population densities, might be a key driving force behind the rich diversity of species observed in natural ecological communities. (C) 2021 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants
FAPESP's process: 19/21227-0 - Movement strategies and population dynamics in heterogeneous environments
Grantee:Gabriel Andreguetto Maciel
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 19/24433-0 - Toward a mechanistic theory for biological patterns and their ecosystem-management possibilities
Grantee:Ricardo Martinez Garcia
Support type: Scholarships in Brazil - BIOTA - Young Researchers
FAPESP's process: 19/05523-8 - Toward a mechanistic theory for biological patterns and their ecosystem management possibilities
Grantee:Ricardo Martinez Garcia
Support type: BIOTA-FAPESP Program - Young Investigators Grants