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College Biology & Ecology > Ecology: Distribution > Flashcards

Ecology: Distribution Flashcards

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2
Q

If a species is found here

A

It evolved hereIt evolved elsewhere and moved

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3
Q

If a species isn’t found

A

It went extinctIt never touched the area

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4
Q

Biogeographic regions

A

Based on similarities of organismsBoundaries are where composition changes dramatically

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5
Q

Climate

A

Long term average conditions

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6
Q

Weather

A

Short term conditions at a certain place and time

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7
Q

Temperature

A

Daily and seasonal cycles

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8
Q

Earth axis tilt

A

23.5 degrees

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9
Q

Different climate regions due to

A

Solar energy dispersion due to axis tilt

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10
Q

Air circulation for equatorial area

A

Hot air rises and cools and turns to rain

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11
Q

Air circulation for deserts

A

Cool air from tropic region falls and heats up

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12
Q

Air circulation for forest area

A

Air picks up moisture from desert and rises and rains

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13
Q

Air circulation for polar regions

A

Dry air from forest descends (cold dry deserts)

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14
Q

Terrestrial biomes based on

A

Dominant vegetation

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15
Q

Aquatic biomes base on

A

Physical and chemical differences

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16
Q

If a biome has similar traits, they are closely related

A

False

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17
Q

Climate determines _______ of biomes

A

Distribution

18
Q

Large scale distribution patterns can be predicted from

A

Climate conditions

19
Q

Large scale distribution patterns can also predict small scale

A

False

20
Q

The transplant experiment can be used to

A

Define a dispersal limiting factor

21
Q

A successful transplant means

A

Organism lives and reproduces, and there IS a barrier to dispersal

22
Q

A failed transplant means

A

Organism dies, living conditions are poor and it is NOT a barrier to dispersal

23
Q

To validate an experiment, you MUST have a

A

Control

24
Q

Biotic interactions that take part in dispersion

A

Competition and predation

25
Q

Indications of competition

A

One sp disappears and the other takes a larger rangeThere are sharp boundaries

26
Q

Balanus is

A

A large barnacle

27
Q

Chthalamus is

A

A small barnacle

28
Q

Thais is

A

A predatory snail that eats barnacles

29
Q

Take into account the _____ stage of organisms in dispersal

A

Developmental

30
Q

Main abiotic factors limiting distribution

A

TemperatureWater (pH/salinity/current/oxygen)LightSoil structure

31
Q

Adaption

A

Long term; evolutionary

32
Q

Acclimation

A

Short term B or P change to adapt

33
Q

Periodic disturbances are

A

Natural disasters

34
Q

Infrequent natural disasters have what affect on organisms

A

A large impact because organisms don’t have a chance to adapt

35
Q

Frequent natural disasters have what affect on organisms

A

Small impact, organisms get used to it and adapt

College Biology & Ecology (28 decks)

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