The long-dashed horizontal line is the theoretically expected dispersal rate under kin competition avoidance (see Table 1 ). Significant differentiation among these 21 metapopulations was also supported by AMOVA and other nonparametric methods of hypothesis testing based on DNA similarity coefficients. A meta population is any population with demes. nacity,juvenile dispersal, and breeding movements on deme structure and discreteness have not been examined. In its previous version, the programme could only simulate migration between neighbouring demes under a stepping-stone migration model. They discovered that these ants have two discrete dispersal modesâdiffusion and jump dispersal. extinction) and because these demes are connected through dispersal, if any single deme becomes ex-tinct, then there is a nonzero probability that the patch will be recolonized by individuals from another deme. The former refers to the case that limited gene dispersal in continuous populations produces demes that are panmictic internally, but are isolated to some extent from adjacent demes. The spatial autocorrelation was predominantly attributed to clonal dispersal of vegetative propagules. Corresponding Author. dispersal between demes and extinction-recolonisation events, driving local adaptation of hosts or parasites . Male dispersal was unconditional on demeâspecific densities, and the majority of the firstâgeneration males became dispersed from both demes, whereas female dispersal was strongly density dependent, so that dispersal took place exclusively from the highâdensity to the lowâdensity deme. Over time, an individual patch may therefore experience multiple extinctions and recolonization events. A deme is a subset of a population, refers to local population (group of individuals) that are connected to other demes by dispersal in a meta population. Many of the wooded areas house insular populations of eastern woodrats (Neotoma floridana attwateri). However, metapopulation dynamics within a homoge-neous environment, in which coevolutionary parameters are identical in all demes, do not in themselves stabilise a model which would otherwise be unstable in a single population . These results are in contrast to previous analyses of similar models. logged demes, up to 100 m in uneven-aged demes, with the strongest autocorrelation up to 150 m for burnt demes. Deme, Greek DÄmos, in ancient Greece, country district or village, as distinct from a polis, or city-state. Speciation could occur at the level of demes. In this case the ES dispersal rate increases with the number of demes that can be reached by one dispersal event. Stepping-stone models with a large number of demes can approximate spatially continuous population models [23, 24], and this can be exploited to produce maps of approximate dispersal rates and population density across continuous space. The evolving traits are the sexâspecific dispersal probabilities â¦ dispersal beyond neighbouring demes is allowed, rare long-distance migration leads to the establishment of pocket populations in advance of the main invasion front and results in DÄmos also meant the common people (like the Latin plebs).In Cleisthenesâ democratic reform at Athens (508/507 bc), the demes of Attica (the area around Athens) were given status in local and state administration. when the average productivity of demes was low, either because few adult females bred at any one time and/or because fecundity was low. 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( LDD ) events 1 Map of study locations, dispersal surface, and images of butterflies, ants caterpillar... Kin competition avoidance ( see Table 1 ), demes would be the metric of scale across dispersal! A polis, or demes, up to 100 m in uneven-aged,. Seed and pollen dispersal in the endangered orchid Spiranthes spiralis deer demes in part northeastern.