Species Diversity

Question 1

What is birth rate?

Answer 1

Species natural ability to reproduce

Question 2

What is the death rate?

Answer 2

How many of a species are dying

Question 3

What are r-selected species?

Answer 3

• respond quickly to low survival rates

• reach sexual maturity quickly

• produce many young

E.g. mice and greenfly

Question 4

What are k-selected species?

Answer 4

• recover slowly from decline in population

• reach sexual maturity older

• produce less young but live a long time

Question 5

What are density independent factors?

Answer 5

Factors where population density has no effect
—> drought, flood, eruption

Question 6

What are density dependent factors?

Answer 6

Factors where changes of survival depends on population density
—> food, disease, intra-species
competition

Question 7

What is the carrying capacity?

Answer 7

Greatest population an area can support indefinitely without damaging the environment