biodiversity Flashcards

(38 cards)

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

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?

20
Q

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

21
Q

two latitudes are more likely to have big trees?

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
topography, what is a rain shadow?
The side of the mountain that does not get rain
26
In the temperate region, the topmost, warm layer of the ocean travels…
W to E
27
It is situated north of an arrangement of islands that pushes slow moving air across a warm shallow sea and up onto the mainland.
The Southeastern United States is not a hot desert primarily because…
28
In Tropical Seasons, winter is described as...
dry
29
What can producers do that consumers can't do?
Convert solar energy to chemical energy.
30
organisms are responsible for converting dead organic material back into an inorganic form that plants can use?
decomposers
31
two most limiting factors of plant growth?
Nitrogen and phosphorus
32
biogeochemical cycles includes an atmospheric reservoir that is largely unavailable to nutrient cycling?
nitrogen
33
How do animals release nitrogen back to the ecosystem?
They excrete it in urine.
34
What happens to the carbon dioxide that is dissolved into the ocean?
It is assimilated into the shells of mollusks as calcium carbonate.
35
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?
eutrophication
36
genotype and phenotype
The genotype interacts indirectly with the environment through the phenotype.
37
What happens when atmospheric Carbon Dioxide levels rise?
Oceanic levels of Bicarbonate rise, and the coral reefs show decline.
38
Areas that get "medium" amounts of rainfall support what type of ecosystem?
Grasslands with maybe some small trees.