a species that has been introduced or is not not native to an environment. Invasive species are generally harmful to the local habitat or native species an are unwanted pests
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name examples of invasive species
grey squirrel,american beaver,cane toad
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there are different routes of invasion and most are due to human activities,name some of these.
tourism,plant or pet trade,commercial shipping
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what characteristics make a good invader?
rapid reproduction,fast growth,high dispersal,used by humans
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name the ecological impact of invasive species
reduce native biodiversity,upset balance of local ecosystem,spread of disease
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name the economical impact of invasive species
very expensive-agriculteral pests cause damage every year.Controlling them is expensive.expensive to eradicate invasive species.
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name the 4 main ways that invasive species are controlled
physical,chemical,biological control and prevention
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explain physical control of invasive species
controlling plants e.g. removal of plants by hand etc. Controlling animals-culling,hunting etc.putting up barriers or fences
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explain chemical control of invasive species
involves applying poison to eliminate invasive species. e.g. herbicides to control plants,insecticides and pesticides to control insect pests.
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Other cards in this set
Card 2
Front
name examples of invasive species
Back
grey squirrel,american beaver,cane toad
Card 3
Front
there are different routes of invasion and most are due to human activities,name some of these.
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