All Flashcards

1
Q

Demography

A

study of the vital statistics of a population and how they change over time

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2
Q

immigration

A

coming in

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3
Q

emigration

A

leaving

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4
Q

crude birth and death rates are based on total number of births or deaths per

A

1,000 people in a population

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5
Q

Direct Count or Census

A

count all the individuals in a population (humans)

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6
Q

Quadrat

A

individuals are counted within a sample area (plants)

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7
Q

Capture-Recapture

A

count and mark number of individuals in area and return to habitat. then go back and count again

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8
Q

What kind of species live clumped?

A

Animals

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9
Q

What kind of species live Uniform?

A

plants, for nutrients and non competition

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10
Q

What kind of species live Random?

A

Dandelions or weeds

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11
Q

Not mature enough to reproduce

A

pre reproductive age(0-14)

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12
Q

those capable to reproduction

A

Reproductive age(15-44)

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13
Q

those too old to reproduce

A

post reproductive age (45+)

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14
Q

rate at which population would grow if it had unlimited resources

A

intrinsic rate of increase (r)

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15
Q

maximum population of a given species that a particular habitat can sustain indefinitely without degrading the habitat

A

Carry Capacity (K)

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16
Q

Number of individuals in a population found in a particular area or volume

A

population density

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17
Q

Density Independent Factors

A
seasons
climate
temperature
hurricanes
tornadoes
drought
floods
18
Q

Density Dependent Factors

A
Competition 
predation
disease 
behavior
reproductive capacity
19
Q

Regulating/ Limiting Factors is AKA

A

Environmental Resistence

20
Q

Maximum possible growth rate

A

biotic potential

21
Q

J Curve

A

Steep and growing line

22
Q

S curve

A

line at or around carrying capacity that is relatively constant and not growing

23
Q

fluctuates slightly above and below carrying capacity

A

stable

24
Q

populations explode and then crash to a more stable level

A

irruptive

25
Q

populations fluctuate and regular cyclic or boom and bust cycles (predator and prey)

A

cyclic

26
Q

erratic changes possibly due to chaos or drastic change (weather)

A

irregular

27
Q

Species that are opportunists tend to be short lived and small

A

R

28
Q

Species that are competitors and long lived only a few offspring

A

K

29
Q

Rhinos, Bears and more have what type of survivorship curve

A

Late Loss

30
Q

Birds have what kind of survivorship curve

A

Constant loss

31
Q

Fish have what kind of survivorship curve

A

early loss

32
Q

Average number of babies per woman WORLDWIDE

A

2.4

33
Q

replacement level fertility

A

2.0

34
Q

of babies per woman

A

fertility rates

35
Q

of babies per 1,000 in population

A

birth rates

36
Q

preindustrial

A

little population growth due to high infant mortality

37
Q

transitional

A

industrialization begins, death rates drop birth rates remain high

38
Q

industrial

A

birth rates drop and approaches death rates

39
Q

postindustrial

A

birth rates drop to or below death rates population stabilizes or shrinks

40
Q

Worlds most populated country

A

China

41
Q

Country growing most rapidly

A

India