variable meanings Flashcards by Alexis Feucht

Q

B (Hamilton’s Rule)

A

Benefit to recipient

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Q

r (Hamilton’s Rule)

A

coefficient of relatedness

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Q

C (Hamilton’s Rule)

A

cost to donor

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Q

λ

A

population growth rate

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Q

N1

A

Initial population

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Q

No

A

population when looking at it

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Q

Nt=Noλ^t

A

geometric population growth

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Q

Nt

A

population at time t

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Q

t

A

time steps

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Q

Nt=Noe^rt

A

exponential growth equation

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Q

e

A

natural log (2.72)

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Q

r

A

intrinsic growth rate

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Q

d

A

change

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Q

Td=(loge(2)/r)

A

doubling time equation

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Q

dN/dt=rN(1-N/K)

A

logistic growth equation

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Q

dP/dt=cP(1-P)-eP

A

Levin’s metapopulation model

Q

P
(metapopulation)

A

proportion of habitat patches occupied at time t

Q

c
(metapopulation)

A

patch colonization rate

Q

e
(metapopulation)

A

patch extinction rate at equilibrium

Q

N
(LV)

A

number of prey

Q

c (lotka-volterra)

A

capture efficiency

Q

P (lotka-volterra)

A

number of predators

Q

dP/dt=acNP-mP

A

predator equation

Q

a
(predator)

A

efficiency of converting prey into predators

Q

m
(predator)

A

per capita mortality rate of predators (chances of predator dying)

Q

dN1/dt=r1N1(1-(N1+αN2)/K1)

A

Lotka-volterra equation of species 1

Q

dN2/dt=r2N2(1-N2+βN1)/K2)

A

Lotka-Volterra equation of species 2

Q

N1 (lotka-volterra, s1)

A

number of individuals of species 1

Q

N2 (lotka-volterra, s2)

A

number of individuals of species 2

Q

r1

A

growth rate of s1

Q

r2

A

growth rate of s2

Q

K1

A

carrying capacity of s1

Q

K2

A

carrying capacity of s2

Q

α

A

effect of species 2 on species 1

Q

β

A

effect of species 1 on species 2

Q

when do two species coexist?

A

α<1 and β<1

Q

s1 excludes s2 when

A

α<1 and β>1

Q

s2 excludes s1 when

A

α>1 and β<1