Ki or K, the competition coefficient: the effect of species j on species i the mortality or extinction rate of species the growth rate on a given substrate of resource R, in the Michaelis-Menton equation the maximum growth rate of the population the efficiency by which each individual converts the resource into new individuals maximum cell division rate (= rmax) for species i the colonisation rate of species the availability of the resource j the half-saturation constant for the resource i; the concentration of the resource that produces half the maximum growth rate.
Ri the carrying capacity of species one the carrying capacity of species two the supply rate of resource R
death or mortality rate the number of individuals of species one the number of individuals of species two the proportion of available habitat sites or patches occupied by species i the proportion of habitat sites occupied at equilibrium the proportion of habitat sites occupied at equilibrium by species i the rate at which each individual must consume the resource in order to maintain itself the intrinsic rate of increase of species one the intrinsic rate of increase of species two the amount of a resource needed to just sustain the population. That is, R* is the level of the resource needed to balance mortality (growth just offsets mortality)
the quantity or concentration of a resource i
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