Invasive species

Question 1

Invasive species

Answer 1

• introduced into an area outside its natural range

- established and expanded its range

Question 2

biodiversity loss

Answer 2

genetic, individual, population, community

Question 3

intentional introductions

Answer 3

biocontrol, escaped pets, crops and recreation

Question 4

unintentional introductions

Answer 4

human travel, few records of this, not introduced in ways to maximise establishment

Question 5

biodiversity protocols

Answer 5

1. pre-border: laws etc.
2. . border control: detect and detain
3. post border: prevent establishment

Question 6

introduction process

Answer 6

transport, introduction, establishment, spread

Question 7

abiotic factors of invasion success

Answer 7

propagule pressure (no individuals and no introductions). pathways and travel methods

Question 8

biotic factors

Answer 8

climatic similarity, behaviour, human commensal, ecology, life history, release from predators/prey/competitors/parisites

Question 9

genetic factors

Answer 9

genetic drift, founder effect, genetic admixture

Question 10

lag phase

Answer 10

spread takes a long time after introduction

Question 11

evolution during invasion

Answer 11

native species may evolve in response to introduced species - prevent extinction
invasive species may evolve