APPEL \u00c0 R\u00c9SEAUX “R\u00e9seau National des Syst\u00e8mes Complexes”\u00a0RNSC 2012<\/p>\n
This project aims to initiate a reflection on the numerical modeling of microbial ecosystem dynamics: how to articulate existing models, discrete or continuous, deterministic or random in a framework including multiple scales and interactions between these different scales?<\/p>\n
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Table Of Content<\/p>\n
Chapter 1. The network<\/a><\/p>\n Section 1. List of collaborators<\/a><\/p>\n Section 2. Project supported by the network<\/a><\/p>\n Section 3. Relationship to complex systems<\/a><\/p>\n Chapter 2. Results<\/a><\/p>\n Section 1. Publications<\/a><\/p>\n Section 2. Communications<\/a><\/p>\n Section 3. Achievements<\/a><\/p>\n Section 4. Other projects<\/a><\/p>\n Chapter 3. Activities 2013<\/a><\/p>\n Section 1. Coupled days DyLeRBio &\u00a0MnMs<\/a><\/p>\n\n<\/div> <\/p>\n The objectives of this network are:<\/p>\n The originality of this network is to bring together biologists and various specialists in dynamical systems (from continuous deterministic to stochastic discrete), with the objective of identifying situations where hybrid modeling reserves “surprises” or non-intuitive behaviors (cf. for example Campillo and Lobry, 2012<\/a>).<\/p>\n The vast majority of models used to describe the dynamics of microbial ecosystems consist of deterministic continuous dynamical systems (mathematized as systems of differential equations). These models generally describe the evolution in time of the “size” of the population. However, by definition, the size of a population is a discrete quantity. When the population size is very large, the approximation of infinitesimal changes in the population (plus or minus 1 individual) by a continuous model is satisfactory, whereas stochastic models are more appropriate for describing the dynamics of small populations. Molecular approaches have shown that natural ecosystems are made up of a large diversity of species, some of which are very abundant while others have very low numbers. This raises the question of the validity of the models classically used to describe these ecosystems. If we have to use a discrete model for all the species, it is obvious that the necessary computing power will be prohibitive. There is therefore a clear need to i) develop new hybrid models where discrete or continuous stochastic models, in population size or individual-centered (IBM), could play a major role and ii) develop and validate simulation tools capable of supporting the implementation of these new models.<\/p>\n [A1] Mohamed Amara. Apport de la mod\u00e9lisation et de la simulation dans la compr\u00e9hension du fonctionnement des \u00e9cosyst\u00e8mes microbiens, stage de master, Ecole polytechnique de Nantes, mars-septembre 2013<\/p>\n [C1] F. Campillo.\u00a0Mod\u00e9lisation en dynamique des populations. Revue TDC (Textes et documents pour la classe) n\u00b01062, 15 Octobre 2013.<\/p>\n [CF1] F. Campillo, C. Fritsch. A mass-structured individual-based model of the chemostat: convergence and simulation. Aug. 2013.<\/p>\n [CL1] F. Campillo and C. Lobry. Effect of population size in a predator\u2013prey model, Ecological Modelling, 246:1-10, 2012.<\/p>\n [GHMD1] T. Gu\u00e9lon, R.C. Hunter, J.D. Mathias, and G. Deffuant.\u00a0Homogenization of Pseudomonas aeruginosa PAO1 biofilms visualized by freeze-substitution electron microscopy. Biotechnology and Bioengineering, 2013, Vol. 110, Issue 5, pages 1405-1418<\/p>\n [GMD1] T. Gu\u00e9lon, J.-D. Mathias and G. Deffuant.\u00a0Influence of spatial structure on effective nutrient diffusion in bacterial biofilms. \u00a0Journal of Biological Physics, Vol. 38, Issue 4, 2013, pages 573-588.<\/p>\n [JRHBN1] Jaillard B., A. Rapaport, J. Harmand, A. Brauman, N. Nunan. Community assembly effects shape the biodiversity-ecosystem functioning relationships. Accept\u00e9 dans Functional Ecology.<\/p>\n [JVR1] Jaillard B., C. Violle, A. Rapaport, Biodiversity and ecosystem functioning: a probabilistic approach provides a parsimonious and unified formalism. En pr\u00e9paration.<\/p>\n [L1] A. Lesne (2013) Multi-scale analysis of biological functions, Acta Biotheoretica 61, 3-19.<\/p>\n F. Campillo, M. Joannides, I. Larramendy. Stochastic models for the chemostat at different scales15th Applied Stochastic Models and Data Analysis International Conference (ASMDA 2013), June 25–28, Jun 2013, Barcelona, Spain.<\/p>\n Several members of the network are participating in the days “From singularly disturbed dynamics to population dynamics” in La Rochelle in December 2013.<\/p>\n Within the framework of the MnMs network, we have continued the development of an IBM model to simulate the degradation of a cellulose bead (see here<\/a>).<\/p>\n The reflections conducted within the MNMs network have led to other projects such as the NuWat project, led by LIRIMA, dealing with numerical modeling for water treatment processes.<\/p>\n The meeting will be held September 30, October 1-2 in Montpellier on the SupAgro Campus\u00a0(see\u00a0this link for the location of the campus and for a list of hotels).<\/p>\n Salle Ferguson – Campus SupAgro – building #21, 1st floor (RDC).<\/p>\n List of participants<\/strong>:<\/p>\n T\u00e9rence Bayen (Universit\u00e9 de Montpellier 2) APPEL \u00c0 R\u00c9SEAUX “R\u00e9seau National des Syst\u00e8mes Complexes”\u00a0RNSC 2012 This project aims to initiate a reflection on the numerical modeling of microbial ecosystem dynamics: how to articulate existing models, discrete or continuous, deterministic or random in a framework including multiple scales and interactions between these different scales? <\/p>\n Table Of Content<\/p>\n<\/div>\n The network List of collaborators MODEMIC (EPC […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":101,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/pages\/754"}],"collection":[{"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/comments?post=754"}],"version-history":[{"count":15,"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/pages\/754\/revisions"}],"predecessor-version":[{"id":2512,"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/pages\/754\/revisions\/2512"}],"up":[{"embeddable":true,"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/pages\/101"}],"wp:attachment":[{"href":"http:\/\/localhost:8888\/wordpress\/wp-json\/wp\/v2\/media?parent=754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Chapter 1. The network<\/h2>\n
Section 1. List of collaborators<\/h3>\n
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Section 2. Project supported by the network<\/h3>\n
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Section 3. Relationship to complex systems<\/h3>\n
Chapter 2. Results<\/h2>\n
Section 1. Publications<\/h3>\n
Section 2. Communications<\/h3>\n
Section 3. Achievements<\/h3>\n
Section 4. Other projects<\/h3>\n
Chapter 3. Activities 2013<\/h2>\n
Section 1. Coupled days DyLeRBio &\u00a0MnMs<\/h3>\n
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\n Monday, September 30<\/td>\n \n \n
\n Tuesday, October 1<\/td>\n \n \n
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\n Wednesday, October 2<\/td>\n \n \n
\nRomain Briandet (INRA MICALIS)
\nFabien Campillo (INRIA MODEMIC)
\nC\u00e9line Casenave (INRA MODEMIC)
\nGuillaume Deffuant (IRSTEA LISC)
\nMathieu Desroches (INRIA SISYPHE)
\nYves Dumont (IRD AMAP)
\nAlbert Granados (INRIA Rocquencourt)
\nAntoni Guillamon (UPC, Barcelona)
\nJ\u00e9r\u00f4me Harmand (INRA LBE and MODEMIC)
\nGemma Huguet (UPC, Barcelona)
\nMartin Krupa\u00a0(INRIA SISYPHE)
\nAnnick Lesnes\u00a0(CNRS\/UPMC LPTMC)
\nJean-Denis Mathias (IRSTEA LISC)
\nClaude Lobry (UNSA MODEMIC)
\nEnrique Ponce\u00a0(Univ. Sevilla)
\nRafel Prohens (UIB, Palma de Mallorque)
\nOvidiu Radulescu (DIMNP Universit\u00e9 de Montpellier 2)
\nAlain Rapaport\u00a0(INRA MODEMIC)
\nTewfik Sari (IRSTEA ITAP)
\nTere Seara\u00a0(UPC, Barcelona)
\nAntonio Teruel\u00a0(UIB, Palma de Mallorca).<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"