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16 Cards in this Set

  • Front
  • Back
An invasive species is a species that
is non native and causes economic or environmental harm
What are three synonyms of non-native
exotic, alien, nonindeigenous
Name 6 ways humans spread invasive species
1) trade
2) agriculture
3) biological
4)pets
5) accidental
name two ways that an invasive species can cause harm to native species
1) can be a superior predator
2) can overcrowd an organism
3) can prey on an organism
Name 4 ways invasive plants can be dangerous
1) displace native plants that once gave food and shelter to native species
2) compete for nutrients, sun, space
3) increase fire danger by providing more fuel
4) affect erosion and flood levels
What are two reasons invasive species can spread so rapidly?
1) no natural predators
2) utilize unused resources
What are some ecological impacts that invasive species have?
reduceds biodiversity and reduces resources available to natives
What are some economic impacts that natives can have?
management can cost up to $140 billion annually
What are some agricultural impacts that invasives have?
harmful to human food sources
What are some ways invasives are harmful to forestry?
can ruin timber industries in some areas
What are some ways that invasives harm Tourism and recreation?
- hinders acess to fishing, hunting, boating, swimming
What are some ways invasives can harm public health?
asian mosquitos, EEE, and West nile virus are all invasives
How can one control invasives mechanically?
pullling out plants by hand, tilling
How can one use chemicals to control invasives?
using insecticides, pesticides
How can one use biological control over invasives?
carefully introducing species that would control populations
How can one prevent species from entering in the first place?
educating the public,
controlling ballest water and trades
installing filters on boats