Population Size and Regulation

Question 1

Do populations typically fluctuate?

Answer 1

Yes

Question 2

Reasons for population fluctuations

Answer 2

Delays in reproduction, changing resource availability, interactions with other species, patterns of behavior

Question 3

What is the allee effect?

Answer 3

There is a positive correlation between population size and individual fitness

Question 4

Density-Dependent Factors include:

Answer 4

competition for food, shortages of food, alteration of chemical environment, increase in predation or parasites, disease may spread more easily

Question 5

Density-Independent Factors include:

Answer 5

volcanic eruptions, weather, trampling, hurricanes, floods, etc

Question 6

Two ways to document population size:

Answer 6

Census or mark and recapture study

Question 7

Lincoln Peterson Index

Answer 7

N = Mn/x

Question 8

Assumptions of Lincoln Peterson Index

Answer 8

Closed population, No B and D, No I and E, No tags falll off, equaly probability of being caught