BIOL208 Lecture Notes - Lecture 13: Microclimate, Natural Selection, Sexual Conflict
Document Summary
Group of subpopulations living on separate patches connected by exchanges of individuals among patches. (difference between population and metapopulations is dispersal) Areas are not all the same size, the fact that those areas differ changes dispersal patterns. Each of these patches is spatially isolated and an actual dispersal has to take place. If one patch doesn"t fit the niche characteristics of the organism, it won"t disperse there. Dynamics of butterflies are very different in different patches of metapopulations. Area g went extinct, dispersal from area h led to the reestablishment of area g. Numerical response: when the density of predator directly influences the density of prey. R-selected: lots of babies when lots of resources, crash when none. Populations of kestrels and owls are tracking the populations of voles when they move to other patches. Their distribution changes as their food availability changes. Phenology: the timing of things, timing of life history traits.