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Biology unit 1 > 2.4 > Flashcards

2.4 Flashcards

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1
Q

Best random sampling dispersion

A

Uniform

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2
Q

Uniform dispersion

A

Usually territorial animals

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3
Q

Random dispersion

A

Usually plants that are dispersed by the wind

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4
Q

Clustered dispersion

A

Animals that herd around something or stay in close quarters with each other

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5
Q

Population growth formula

A

Births +Immigration> Deaths +Emigration

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6
Q

Population decline formula

A

Births +Immigration < Deaths+ Emigration

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7
Q

Population stable formula

A

Births +Immigration= Deaths+ Emigration

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8
Q

time

A

t

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9
Q

Independent Density

A

Effect is not dependent on the populations density

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10
Q

Dependent Density

A

Effect is dependent on the density of the population

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11
Q

Limiting factors

A

Dependent and independent density

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12
Q

Exponential Equation

A

rN

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13
Q

Logistic Equation

A

rN(K-N)/K

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14
Q

Exponential

A

Population has unlimited growth

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15
Q

Logistic

A

Population is limited by factors

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16
Q

K

A

Carrying Capacity

17
Q

N0

A

Initial population

18
Q

r

A

maximum per capita growth rate

19
Q

dN/dt

A

growth rate

20
Q

R-Selected

A

Smaller animals in larger litters that receive little attention from the parent

21
Q

K- Selected

A

Larger animals in small litters that receive lots of attention from the parent.

22
Q

Type 1 survivorship

A

Long lifespan few deaths before lifespan ends K-selected animals

23
Q

Type 1 survivorship

A

Long lifespan few deaths before lifespan ends K-selected animals

24
Q

Type 2 survivorship

A

Constant death rate doesn’t fluctuate

25
Q

type 3 survivorship

A

High death rate R-selected animals

26
Q

Calculate percentage

A

(Number surviving/cohort) x 100

27
Q

Cohort

A

Original number of subjects in the overall group.

28
Q
A

Biology unit 1 (20 decks)

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