Threats of biodiversity Flashcards
1
Q
What is the bottle neck effect
A
Where small populations lose the genetic variation necessary to enable evolutionary responses to environmental change.
2
Q
What does degradation of the edges of habitats fragments leave to
A
Increased competition between species
3
Q
Term used to connect isolated fragments
A
Habitat fragments.
4
Q
What do habitat corridors allow
A
Movement of animals between fragments leading to increased access to food and choice of mate.
5
Q
What are naturalised species
A
Species that become established in wild communities
6
Q
What are invasive species
A
Naturalised species that spread rapidly and eliminate natural species.
7
Q
Why do invasive species survive
A
Free of their native predators.
