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