Unit Two Test Flashcards

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1
Q

Ecosystem Diversity

A

The number of different habitats available in a given area

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2
Q

Species Diversity

A

The number of different species in an ecosystem and the balance of the population

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3
Q

Genetic Diversity

A

How different the genes are of individuals within population

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4
Q

Richness

A

Total number of different species found in an ecosystem

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5
Q

Evenness

A

Measure of how all the individual organisms in an ecosystem are balanced between different species

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6
Q

Bottleneck Event

A

Disutrbance/Disaster that drastically reduces population, size, and skills of organisms

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7
Q

What is inbreeding depression?

A

When organisms mate with closely related family members

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8
Q

Ecosystem Resillience

A

An ecosystem returns to it’s original conditions after a major disturbance

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9
Q

Ecological Range of Tolerance

A

Range of conditions that an organism can endure before injury or death

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10
Q

What is optimal range?

A

When an organisms survive, grow, and reproduce

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11
Q

Zone of physiological stress

A

Organisms survive but with stressors like infertility, lack of growth, and decreased activity levels

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12
Q

Zone of intolerance

A

Organisms will die

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13
Q

What are limiting factors?

A

Soil, freshwater lakes and rivers, bays and estuaries

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14
Q

Specialists

A

smaller range of tolerance or narrower ecological niche makes them more prone to extinction

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15
Q

What are examples of specialists?

A

specific food requirements and decreased ability to adapt to new conditions

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16
Q

Generalists

A

larger range of tolerance, borader nniche makes them less prone to extinction and more likely to be invasive

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17
Q

What are examples of generalists?

A

broader food requirements and higher adaptability

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18
Q

Quality

A

k-selected species

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19
Q

Quantity

A

r-selected species

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20
Q

Examples of k-selected species

A

fewer offspring, reproduce multiple times, long lifespan, change of invasives

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21
Q

Examples of r-selected species

A

many offspring, may reproduce, shorter life span, more likely to be invasive, rapidly changing

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22
Q

Survivorship Curve

A

line that shows survival rate of cohort in a population from birth to dead

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23
Q

Type 1 is mostly

A

k selected species

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24
Q

Type 2 is mostly

A

in between r and k

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25
Q

Type 3 is mostly

A

r selected

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26
Q

Biotic Potential

A

exponential growth maximum and potential growth rate with no limiting resources

27
Q

Logistic Growth

A

initial rapid growth

28
Q

Size (N)

A

total number in a given area at a given time

29
Q

Density

A

number of individual in a given area

30
Q

Distribution

A

individual population are spaced out compared to each other

31
Q

Sex Ratio

A

ratio of males to females

32
Q

What factors increase population growth?

A

higher TFR, higher birth rate, increased access to clean water, healthcare

33
Q

What factors decrease population growth?

A

higher death rate, increased education in women, delayed age of first child

34
Q

Biome

A

large area with similar climate conditions that determine plant and animal species there

35
Q

Ecosystem

A

all living and non living things in an area

36
Q

Symbosis

A

any close and long term interaction between two organisms of different species

37
Q

Mutualism

A

organisms of different species living close together in a way that benefits both

38
Q

Commensalism

A

relationship that benefits one organisms and doesn’t impact the other

39
Q

Trophic Cascade

A

removal or addition of a top predator has a ripple effect down through lower trophic levels

40
Q

Tertiary Consumers

A

animals that eat secondary consumers or carnivores and omnivores

41
Q

Secondary Consumers

A

animals that eat primary consumers or herbivores

42
Q

Primary Consumers

A

animals that eat plants

43
Q

Producers

A

really convent sun’s light energy into chemical energy

44
Q

Ecosystem Services

A

goods that come from natural resources

45
Q

Provisioning

A

goods taken directly from ecosystems like fish, hunting, berries

46
Q

Regulating

A

natural ecosystems regulate climate/air quality like trees

47
Q

Supporting

A

natural ecosystems support process we do ourselves making them cheaper and easier like wetland plant roots or insects pollinating

48
Q

Cultural

A

money generated by recreation like paying to enter state parks or paying for a fishing license

49
Q

Salinity

A

the amount of salt in a body of water

50
Q

Flow

A

determines which plants and organisms can survive and how much O2 can dissolve into the water

51
Q

Depth

A

influences how much sunlight can penetrate and reach plants below surface for photosynthesis

52
Q

Temperature

A

warmer water holds less dissolved O2

53
Q

Natural Disturbance

A

a natural event that disrupts the structure/function of an ecosystem

54
Q

Periodic

A

occurs with regular frequency like dry-wet seasons

55
Q

Episodic

A

occasional events with irregular frequencies like hurricanes, droughts, and fires

56
Q

Random

A

no regular frequencies like earthquakes, volcanoes, and asteroids

57
Q

Natural Climate Change

A

earth’s climate has varied over geological time for numerous reasons

58
Q

Migration

A

wildlife may migrate to a new habitat as the result of natural disruptions

59
Q

Natural Selection

A

organisms that are better adapted to their environment

60
Q

Evolution

A

the environment an organisms lives in determines which traits are adaptions

61
Q

Pace of Evolution

A

the more rapidly an environment changes, the less likely a species in the environment will adapt to those changes

62
Q

Primary Succession

A

starts from bare rock in an area with no previous soil formation

63
Q

Secondary Succession

A

starts from already established soil

64
Q

Invasive Species

A

species not native to an area