Mathematical Analysis of a Size Structured Tree-Grass Competition Model for Savanna Ecosystems

Autor: Valaire Yatat, Yves Dumont, Jean Jules Tewa, Pierre Couteron, Samuel Bowong

Publikováno v: Biomath, Vol 3, Iss 1 (2014)

Several continuous-time tree-grass competition models have been developed to study conditions of long-lasting coexistence of trees and grass in savanna ecosystems according to environmental parameters such as climate or fire regime. In those models,

Externí odkaz: https://doaj.org/article/49fcca1998c5459a86de420ec97a4115

On the usefulness of a minimalistic model to study tree-grass biomass distributions along biogeographic gradients in the savanna biome

Autor: Djeumen, Ivric Valaire Yatat, Dumont, Yves, Doizy, Anna, Couteron, P.

We present and analyze a model aiming at recovering as dynamical outcomes of tree-grass interactions the wide range of vegetation physiognomies observable in the savanna biome along rainfall gradients at regional/continental scales. The model is base

Externí odkaz: http://arxiv.org/abs/2005.05654

Spreading Speeds and Traveling Waves for Monotone Systems of Impulsive Reaction–Diffusion Equations: Application to Tree–Grass Interactions in Fire-prone Savannas

Autor: Jacek Banasiak, Yves Dumont, Ivric Valaire Yatat Djeumen

Publikováno v: Differential Equations and Dynamical Systems
Differential Equations and Dynamical Systems, 2023, 31, pp.547-580. ⟨10.1007/s12591-020-00552-6⟩
Differential Equations and Dynamical Systems, In press, ⟨10.1007/s12591-020-00552-6⟩

Many systems in life sciences have been modeled by reaction–diffusion equations. However, under some circumstances, these biological systems may experience instantaneous and periodic perturbations (e.g. harvest, birth, release, fire events, etc) su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::784e9b0b6100b8bc3e9d12e1fa5acb23
https://hal.inrae.fr/hal-02930082

A minimalistic model of vegetation physiognomies in the savanna biome

Autor: Anna Doizy, Yves Dumont, Ivric Valaire Yatat Djeumen, Pierre Couteron

Publikováno v: Ecological Modelling
Ecological Modelling, 2021, 440, pp.109381. ⟨10.1016/j.ecolmodel.2020.109381⟩
Ecological Modelling, Elsevier, 2021, 440, pp.109381. ⟨10.1016/j.ecolmodel.2020.109381⟩

International audience; We present and analyze a model aiming at recovering, as dynamical outcomes of fire-mediated tree–grass interactions, the wide range of vegetation physiognomies observable in the savanna biome along rainfall gradients at regi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccc080cc76abdfbe04d78ee88bcb441c
https://hal.science/hal-02570303/document

Sustainable vector/pest control using the permanent Sterile Insect Technique

Autor: Yves Dumont, Ivric Valaire Yatat Djeumen, Roumen Anguelov

Publikováno v: Mathematical Methods in the Applied Sciences
Mathematical Methods in the Applied Sciences, Wiley, 2020, Special Issue: BIOMATH 2019, 43 (18), pp.10391-10412. ⟨10.1002/mma.6385⟩

Vector/Pest control is essential to reduce the risk of vector-borne diseases or losses in crop fields. Among biological control tools, the sterile insect technique (SIT), is the most promising one. SIT control generally consists of massive releases o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a57c394c557b0c8f2aa401dddba5136f