Moussaoui A. auteur aut IRD Auger Pierre auteur aut IRD Roche Benjamin auteur aut IRD text journalArticle eng text/pdf born digital access Outcomes of interspecific competition, and especially the possibility of coexistence, have been extensively studied in theoretical ecology because of their implications in community assemblages. During the last decades, the influence of different time scales through the local/regional dynamics of animal communities has received an increasing attention. Nevertheless, different time scales involved in interspecific competition can result form other processes than spatial dynamics. Here, we envision and analyze a new theoretical framework that couples a game theory approach for competition with a demographic model. We take advantage of these two time scales to derive a reduced model governing the total densities of the two populations and we study how these two time scales interfere and influence outcomes of species competition. We find that a competition process occurring on a faster time scale than demography yields a "priority effect" where the first species introduced outcompetes the other one. We then confirm previous findings stipulating that species coexistence is favored by large difference in time scales because the extinction/recolonization process. Our results then highlight that an integration of demographic and competition time scales at both local and regional levels is mandatory to explain communities assemblages and should become a research priority. specialized Hawk and dove tactics Aggregation of variables Interspecific competition 020 082 62 3 385-404 2014 0001-5342 https://www.documentation.ird.fr/hor/fdi:010062479 10.1007/s10441-014-9224-x 0001-5342 [F B010062479] https://www.documentation.ird.fr/hor/fdi:010062479 https://www.documentation.ird.fr/intranet/publi/2014/09/010062479.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2014-10-02 2017-08-23 fdi:010062479 fre