Ecology: Distribution

Question 2

If a species is found here

Answer 2

It evolved hereIt evolved elsewhere and moved

Question 3

If a species isn’t found

Answer 3

It went extinctIt never touched the area

Question 4

Biogeographic regions

Answer 4

Based on similarities of organismsBoundaries are where composition changes dramatically

Question 5

Climate

Answer 5

Long term average conditions

Question 6

Weather

Answer 6

Short term conditions at a certain place and time

Question 7

Temperature

Answer 7

Daily and seasonal cycles

Question 8

Earth axis tilt

Answer 8

23.5 degrees

Question 9

Different climate regions due to

Answer 9

Solar energy dispersion due to axis tilt

Question 10

Air circulation for equatorial area

Answer 10

Hot air rises and cools and turns to rain

Question 11

Air circulation for deserts

Answer 11

Cool air from tropic region falls and heats up

Question 12

Air circulation for forest area

Answer 12

Air picks up moisture from desert and rises and rains

Question 13

Air circulation for polar regions

Answer 13

Dry air from forest descends (cold dry deserts)

Question 14

Terrestrial biomes based on

Answer 14

Dominant vegetation

Question 15

Aquatic biomes base on

Answer 15

Physical and chemical differences

Question 16

If a biome has similar traits, they are closely related

Answer 16

False

Question 17

Climate determines _______ of biomes

Answer 17

Distribution

Question 18

Large scale distribution patterns can be predicted from

Answer 18

Climate conditions

Question 19

Large scale distribution patterns can also predict small scale

Answer 19

False

Question 20

The transplant experiment can be used to

Answer 20

Define a dispersal limiting factor

Question 21

A successful transplant means

Answer 21

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

Question 22

A failed transplant means

Answer 22

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

Question 23

To validate an experiment, you MUST have a

Answer 23

Control

Question 24

Biotic interactions that take part in dispersion

Answer 24

Competition and predation

Question 25

Indications of competition

Answer 25

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

Question 26

Balanus is

Answer 26

A large barnacle

Question 27

Chthalamus is

Answer 27

A small barnacle

Question 28

Thais is

Answer 28

A predatory snail that eats barnacles

Question 29

Take into account the _____ stage of organisms in dispersal

Answer 29

Developmental

Question 30

Main abiotic factors limiting distribution

Answer 30

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

Question 31

Adaption

Answer 31

Long term; evolutionary

Question 32

Acclimation

Answer 32

Short term B or P change to adapt

Question 33

Periodic disturbances are

Answer 33

Natural disasters

Question 34

Infrequent natural disasters have what affect on organisms

Answer 34

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

Question 35

Frequent natural disasters have what affect on organisms

Answer 35

Small impact, organisms get used to it and adapt