Concepts 22.1-22.3 Flashcards
1
Q
What do high extinction rates lead to?
A
Biodiversity loss
2
Q
What is biodiversity loss?
A
The process of cumulative species extinctions leading to changes in ecosystems
3
Q
According to the extinction vortex concept, small population sizes lead to what?
A
- Genetic drift
- Inbreeding depression
- Higher demographic stochasticity
4
Q
What are the 6 drivers of biodiversity loss?
A
- Invasive species
- Habitat loss and fragmentation
- Co-extinctions
- Over exploitation
- Climate change
- Disease
5
Q
How do invasive species affect native species?
A
Through predation, competition and disease transmission
6
Q
How can we achieve biodiversity recovery?
A
Ecological, institutional and socioeconomic contexts
7
Q
What are some restoration actions?
A
- Revegetation
- Invasive species removal
- Re-establishing ecosystem processes (e.g. fire)
- Intensive threatened species management
