Chapter 4: Population ecology

Question 1

What can determining the carrying capacity of a species be valuable to ecosystems?

Answer 1

Ensuring a habitat can sustain the species to ensure the ecosystem and species and all species stay in good health.

Question 2

What are the limiting factors of carrying capacity?

Answer 2

Biotic and abiotic factors

Question 3

What are the biotic factors?

Answer 3

the abundance of food, number of predators, number of mates and number and variety of disease-causing organisms

Question 4

What are the abiotic factors?

Answer 4

Nutrients, shelter, refuge from predators, light, water and nesting sites.

Question 5

How will change if population effect carrying capacity?

Answer 5

If a population increases too much and a decrease in abiotic and biotic factors occur, the ecosystem and species could collapse. Populations must not exceed to ecosystems carrying capacity.

Question 6

How can you estimate populations?

Answer 6

Direct observation and Lincoln Index

Question 7

What is direct observation?

Answer 7

Recording sighting at particular times

Question 8

What is Lincoln Index?

Answer 8

Capture - mark - reacpture

Question 9

What is exponential growth J-curve?

Answer 9

When environments are destroyed, some species are in an ideal, unlimited environment and their population dramatically increases

Question 10

What is Logistic growth s curve?

Answer 10

A population levels off when it reaches carrying capacity

Question 11

Which curve is dangerous?

Answer 11

J-curve