Lecture 10: Intro to Interactions

Question 1

Exploitative competition

Answer 1

indirect interaction between two competitors
* ex. plants shade; insects consuming sap against other insects

Question 2

Apparent competition

Answer 2

Squirrelpox in the UK (cause was virus)

Question 3

Competitive exclusion

Answer 3

same limiting resource

Question 4

Coexistence

Answer 4

• different limiting resources
• Intra-specific competition more limiting than inter-specific

Question 5

When does a population stop growing/shrinking?

Answer 5

• pop size when growth rate = 0 and pop neither grows or shrinks
• N=K or N=0

Question 6

Gause’s competitive exclusion principle

Answer 6

Two species cannot coexist indefinitely if they are limited by the same resource