3.8 Threats to Biodiversity

Question 1

What is the result of habitat degradation?

Answer 1

More isolated fragments and smaller fragments exhibit a lower species diversity

Question 2

What do habitat corridors allow?

Answer 2

The corridors allow movement of animals between fragments, increasing access to food and choice of mate

Question 3

What can habitat corridors lead to?

Answer 3

Habitat corridors may lead to recolonisation of smaller fragments after local extinctions

Question 4

What is the impact of the bottleneck effect?

Answer 4

In small populations this loss of genetic diversity can be critical for many species as inbreeding can lead to poor reproductive rates