Population Growth and Density Problems

The video tutorial covers practice problems in population ecology, focusing on calculating growth rates, birth and death rates, and understanding carrying capacity. It includes examples with swans, gray tree frogs, Baltimore Orioles, turkeys, and dandelions, demonstrating how to predict population changes over time.

What is the per capita growth rate for a population with a birth rate of 0.341 and a death rate of 0.296?

• 0.045

• 0.065

• 0.051

• 0.037

If a population of 265 swans has a growth rate of 0.045, how many swans will be added in a year?

• 18

• 10

• 12

• 15

A population of 190 gray tree frogs has a growth rate of -0.093. What will be the population size next year?

• 190

• 180

• 200

• 172

Given a population decline of 358 Orioles and a death rate of 0.395, what is the birth rate if the initial population was 1492?

• 0.105

• 0.195

• 0.245

• 0.155

What is the population density of turkeys if there are 780 turkeys in 92 acres?

• 7.50 turkeys/acre

• 10.00 turkeys/acre

• 9.00 turkeys/acre

• 8.48 turkeys/acre

If the growth rate for a turkey population is 0.141, how many turkeys will be added in a year if the initial population is 780?

• 110

• 120

• 130

• 140

A dandelion population of 40 individuals grows with a rate of 2 per month. What will be the population at the end of one month?

• 80

• 140

• 100

• 120

If the carrying capacity for dandelions is 140, how many additional dandelions can the lawn accommodate after one month?

• 43

• 20

• 30

• 40

What is the intrinsic rate of increase if the current population is 40 and the carrying capacity is 140?

• 2.0

• 3.0

• 1.5

• 2.5

How does carrying capacity affect the growth of a dandelion population?

• It has no effect on population growth.

• It increases the growth rate.

• It limits the maximum population size.

• It decreases the initial population.