2.1 Intro to population ecology

Question 1

What is an abiotic factor on the population?

Answer 1

sunlight

Question 2

If the area on an habitat is 2 km^2 and has 16 individuals in it what is its density?

Answer 2

8 ind./km^2

Question 3

If resources are scarce what kind of distribution would you most likely see?

Answer 3

uniform

Question 4

When you do a random sample what are you assuming?

Answer 4

that there is an equal population density throughout.

Question 5

What is one population metric?

Answer 5

the population range

Question 6

Summarize what mark and recapture is?

Answer 6

Some of the population is captured and then marked. Another portion will be captured and the ones who have marks will be counted.

Question 7

How do you increase the size of a population?

Answer 7

protect the endangered species a lot more

Question 8

A biologist marked 100 tigers in the forest. Over a two day period the traps caught 150 tigers. Of those 150, 60 were found with tags. What is the estimated population of tigers in the forest.

Answer 8

250 tigers

Question 9

What is an example of a random distribution?

Answer 9

a field of dandelions

Question 10

What is the random sampling formula?

Answer 10

of organisms in a sample =total # of organism
area of sample total area