2.1 Population Ecology

Question 1

Population

Answer 1

A group of individuals of the SAME species in the SAME area at the SAME time.

Question 2

Population density

Answer 2

of organisms per area

Question 3

Population distribution

Answer 3

Pattern of spacing

Question 4

Clumped distribution

Answer 4

heavy on resources and social interaction
Ex. Elephants

Question 5

Random distribution

Answer 5

Abundant through no social interactions
Ex. Dandelions

Question 6

Uniform Distribution

Answer 6

Scarce social interactions very territorial
Ex. Penguins

Question 7

If there are 200 chickens in 10 square miles the population density would be

Answer 7

20 chickens / square mile

Question 8

What is the formula for mark and recapture

Answer 8

total # marked / total population size = # marked in recapture / total recaptured

Question 9

10 monkeys are living in a 200-square foot area
What is a ratio you can predict about the data.

Answer 9

There are 100 monkeys living in a 2000 square foot area

Question 10

Direct Count

Answer 10

Every individual

Question 11

Indirect count

Answer 11

Counting the mean

Question 12

Random sampling

Answer 12

Certain areas in the range

Question 13

Mark and recapture

Answer 13

ratio of mark to total recapture

Question 14

Abiotic factors

Answer 14

Sunlight / temp
water / precipitation
soil / nutrients

Question 15

Biotic factors

Answer 15

Other living organisms
-prey
-competitors
-predators, parasites, diseases

Question 16

Intrinsic factors

Answer 16

Adaptations

Question 17

Increase population size

Answer 17

Endangered species

Question 18

Decrease population size

Answer 18

Invasive species

Question 19

Maintain population size

Answer 19

Fisheries management