NRS 305 coefficient terms

x

age

S(x)

number of individuals in cohort at time x

b(x)

average number of offspring per female

l(x)

survivorship

g(x)

probability of surviving to the next age category

l(x)b(x)

reproductive value

R0

reproductive net value, sum of l(x)b(x), reproductive potential of female

a

conversion of food into predator growth

c

capture efficiency

d

predator death rate

R

number of prey

P

number of predator

r

predator growth rate

rmax

maximum per capita

a

isle royale, area searched per unit time by consumer

h

isle royale, handling time for each item

c

isle royale, coefficient for converting resource into consumption for offspring

d

isle royale, consumer per capita mortality rate

a, A

maximum rate of plant consumption per moose, max predation rate on moose

b, B

plant biomass at which consumption is half the maximum, half saturation constant for moose where predation is half max

d, D

rate of plant consumption where moose can maintain themselves, maintenance requirement for wolves

e, E

efficiency of turning food into new moose, conversion efficiency of moose into new wolves