biodiversity Flashcards

1
Q

how many in a given area

A

density

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2
Q

how spread out

A

distribution

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3
Q

the number of females of reproduction age and the number of females reaching reproduction age

A

age structure

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4
Q

3 types of distribution

A

clumped- unequal, distribution of resources, poor seed dispersal mechanism. *animal- pack hunting, safety

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5
Q

even, not thought to exist in nature

A

random

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6
Q

one or more resource is rare, territoralism especially in solitary animals

A

uniform

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7
Q

growth of population

A

birth
immigration
death
irrigation

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8
Q

each individual contribution to population growth

A

per capita growth

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9
Q

the maximum number offspring a female can produce over her lifetime in optimal conditions

A

biotic potential

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10
Q

the number of organism in a population that the environment has the resources to support. (not constant)

A

carrying capacity (K)

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11
Q

things that limit population growth

A

factors

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12
Q

as population size increase, either birthrates decreases or death rate increases.
competition
diseases
predation

A

density dependent

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13
Q

no correlation between population size and birth/death rates (natural disaster)

A

density independent

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14
Q

rapid constant growth rate never reach (k) carrying. selection favors maximal growth rate in an uncrowded environment

A

exponential growth

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15
Q

a period of exponential growth but as the population reaches K growth rate slows dramatically, population size fluctuates at K

A

logistic growth

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16
Q

small size, many offsprings, little parental investment

A

R-selected

17
Q

large bodied, few offsprings, great parental investment

A

K-selected org.

18
Q

harvesting wild populations “magic number” of org. can be harvested such that the number can be regenerated in one season. incomplete number doesn’t include all the variables

A

sustainable yield

19
Q

levels of ecology includes living and non-living factors?

A

ecosystem

20
Q

At what latitude are you most likely to see hot deserts?

A

30 N/S

21
Q

two latitudes are more likely to have big trees?

A

0 and 60 N/S

22
Q

region or regions does the prevailing wind flow from East to West?

A

The Tropics and the Polar Regions only

23
Q

two latitudes have the least precipitation?

A

30 N/S and 90 N/S

24
Q

two latitudes do you see warm humid air rising?

A

0 N/S and 60 N/S

25
Q

topography, what is a rain shadow?

A

The side of the mountain that does not get rain

26
Q

In the temperate region, the topmost, warm layer of the ocean travels…

A

W to E

27
Q

It is situated north of an arrangement of islands that pushes slow moving air across a warm shallow sea and up onto the mainland.

A

The Southeastern United States is not a hot desert primarily because…

28
Q

In Tropical Seasons, winter is described as…

A

dry

29
Q

What can producers do that consumers can’t do?

A

Convert solar energy to chemical energy.

30
Q

organisms are responsible for converting dead organic material back into an inorganic form that plants can use?

A

decomposers

31
Q

two most limiting factors of plant growth?

A

Nitrogen and phosphorus

32
Q

biogeochemical cycles includes an atmospheric reservoir that is largely unavailable to nutrient cycling?

A

nitrogen

33
Q

How do animals release nitrogen back to the ecosystem?

A

They excrete it in urine.

34
Q

What happens to the carbon dioxide that is dissolved into the ocean?

A

It is assimilated into the shells of mollusks as calcium carbonate.

35
Q

When an excessive amount of nutrients get into a slow moving waterway, a chain reaction of events occurs that will eventually kill the entire system. What is this called?

A

eutrophication

36
Q

genotype and phenotype

A

The genotype interacts indirectly with the environment through the phenotype.

37
Q

What happens when atmospheric Carbon Dioxide levels rise?

A

Oceanic levels of Bicarbonate rise, and the coral reefs show decline.

38
Q

Areas that get “medium” amounts of rainfall support what type of ecosystem?

A

Grasslands with maybe some small trees.