the big idea
What makes a species invasive?
HOW do we know when a non-native species has established itself? When it becomes a reproducing population.
WHEN does a non-native species become invasive?
WHEN does a non-native species become invasive?
When it causes harm to any of these areas:
a) THE ENVIRONMENT
The emerald ash borer feeds on ash trees, causing enough damage to kill them.
b) THE ECONOMY
Invasive weeds and insects reduce crop yields and crowd out native plants in forests.
c) HUMAN HEALTH
Jumping invasive carp can damage boats and harm passengers.
HOW do we know when a non-native species has established itself? When it becomes a reproducing population.
WHEN does a non-native species become invasive?When it causes harm to any of these areas:
a) THE ENVIRONMENT
The emerald ash borer feeds on ash trees, causing enough damage to kill them.
b) THE ECONOMY
Invasive weeds and insects reduce crop yields and crowd out native plants in forests.
c) HUMAN HEALTH
Jumping invasive carp can damage boats and harm passengers.
WHAT can I do to help? WHAT can I do to help?
Don’t plant invasive trees and shrubs.
Don’t move firewood from one region to another.
Report invasive species on the web or an app.
Clean boats and other aquatic equipment before leaving.
Purdue Agriculture, 615 West State Street, West Lafayette, IN 47907-2053 USA, (765) 494-8392
© 2023 Purdue University | An equal access/equal opportunity university | Integrity Statement | Copyright Complaints | Maintained by Agricultural Communication
Trouble with this page? Disability-related accessibility issue? Please contact us at agweb@purdue.edu so we can help.