Lec 23: Human impact - Invasive Species Flashcards
1
Q
What are the 2 pathways of invasion?
A
transportation
- ballast water & organisms attached to boat
commerce in living organisms
- live animal imports
- aquarium fish invasions
2
Q
What does an invasive specie’s establishment depend on?
A
the environmental characteristics required for the species to persist
3
Q
what are the 5 steps in invasion?
A
- source location of species
- transport
- establishment
- spread
- impact
4
Q
Name 4 invasive species discussed in class.
A
- nile perch
- Emerald ash borer
- chestnut blight
- zebra mussels
5
Q
Who pays most for the economic impacts of species invasion?
A
local gov and residential
6
Q
What is the best management option?
A
prevention: reducing species in pathways
How do we do this?
- ballast water convention
- treat wood packing material
- focus on “priority species” by using a risk screening tool
7
Q
What are other management options?
A
- eradication
- control: pest management (manual, chemical, biological, genetics)
