Lecture 25

Question 1

Australia/Extinction

Answer 1

lost ~34 species in last 200 years. Usually non-flying mammals in ‘critical weight range’ (35g-5.5kg). Of 72 native species in West NSW, 45 remain. 33 of which are secure

Question 2

Conservation biology

Answer 2

1. Describe problems and understand processes
2. Predict impact of threats
3. Develop solutions
4. Stop species/communities/ecology processes going extinct

Question 3

Jared Diamond

Answer 3

Alien species (invasive)
Over-hunting
habitat loss
co-extinction

Question 4

Edward O Wilson

Answer 4

Habitat destruction
Invasive species
Pollution
human-over-population
Over-hunting

Question 5

Australian invasive species

Answer 5

56 introduced vertebrates ~$800M-$1B managing them. ~$4B spent weeding

Question 6

tens rule

Answer 6

1 in 10 of species brought into region will escape into the wild. 1 in 10 of those will be neutralised. 1 in 10 will be invasive

Question 7

good invasive species

Answer 7

High reproduction
Great ecological dispersal
ecologically flexible