variable meanings Flashcards
(38 cards)
B (Hamilton’s Rule)
Benefit to recipient
r (Hamilton’s Rule)
coefficient of relatedness
C (Hamilton’s Rule)
cost to donor
λ
population growth rate
N1
Initial population
No
population when looking at it
Nt=Noλ^t
geometric population growth
Nt
population at time t
t
time steps
Nt=Noe^rt
exponential growth equation
e
natural log (2.72)
r
intrinsic growth rate
d
change
Td=(loge(2)/r)
doubling time equation
dN/dt=rN(1-N/K)
logistic growth equation
dP/dt=cP(1-P)-eP
Levin’s metapopulation model
P
(metapopulation)
proportion of habitat patches occupied at time t
c
(metapopulation)
patch colonization rate
e
(metapopulation)
patch extinction rate at equilibrium
N
(LV)
number of prey
c (lotka-volterra)
capture efficiency
P (lotka-volterra)
number of predators
dP/dt=acNP-mP
predator equation
a
(predator)
efficiency of converting prey into predators