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Published byPhillip McCoy Modified over 9 years ago
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INVASIVE SPECIES
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D EFINITIONS NATIVE SPECIES Plants, animals, and other living things that have always lived in a certain area
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D EFINITIONS INVASIVE SPECIES Plants, animals, and other living things that have been introduced to an area where they don’t belong Invasive species cause damage to the environment
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HOW DO INVASIVE SPECIES GET HERE ? Introduction by early European settlers for food, medicine, or something to remind them of “home” Release of ballast water from ships (e.g. spiny waterflea) Escape from fish farms (e.g. Atlantic Salmon in the Pacific) Use of live bait when fishing (e.g. round goby) Release or escape from aquarium or water gardens (e.g. fanwort) Boating and water sports (e.g. zebra mussels) Internet and mail ordering
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W HY ARE INVASIVE SPECIES A PROBLEM ? Compete with native species for food, shelter and space Can “take over” and crowd out native species Can change the way native species use the environment Don’t have natural predators in new area Can interfere with human activities Can interfere with farmers’ crops Cost a lot of $$ to remove
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C HARACTERISTICS OF INVASIVE SPECIES Able to live in a wide range of conditions Grow quickly Have lots of young/produce lots of seeds Able to move away and live in new areas Broad diet (eat many different things) Able to adapt to changing conditions May eat/grow/breed at different times than native species
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C OMMON REED ( Phragmites australis ) Native to Europe Brought to North America in ballast material of ships in 1800’s Has spread across entire continent
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D AMAGE CAUSED BY INVASIVE PHRAGMITES Crowds out native plants
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D AMAGE CAUSED BY INVASIVE PHRAGMITES Crowding out native plants can change the ecosystem: the kinds of plants that grow the animals that live in and use the area
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D AMAGE CAUSED BY INVASIVE PHRAGMITES Changes the flow of water through the ecosystem Changes the way nutrients move through the system Increase the chance of fire
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D AMAGE CAUSED BY INVASIVE PHRAGMITES On Wasaga Beach: Block nice views of the shoreline/water Make it hard for people to swim and fish Keep people from using the beach Threaten Piping Plover nesting areas
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D AMAGE CAUSED BY INVASIVE PHRAGMITES
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H OW DO WE CONTROL INVASIVE SPECIES ? PLANTS: - Pesticides - Cutting/mowing, pulling, burning - Insects ANIMALS: - Trapping - Poison - Barriers
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W HAT YOU CAN DO TO HELP DON’T MOVE PLANTS OR ANIMALS!!! Be a responsible boater/fisher Follow warning/information signs Buy native plants for your garden Get involved in your community Learn more about invasive species!
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S EA L AMPREY http://www.invadingspecies.com/invaders/fish/s ea-lamprey/ http://www.invadingspecies.com/invaders/fish/s ea-lamprey/
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Z EBRA M USSEL http://www.invadingspecies.com/invaders/invert ebrates/zebra-and-quagga-mussels/ http://www.invadingspecies.com/invaders/invert ebrates/zebra-and-quagga-mussels/
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R OUND G OBY http://www.invadingspecies.com/invaders/fish/r ound-goby/ http://www.invadingspecies.com/invaders/fish/r ound-goby/
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G IANT H OGWEED http://www.invadingspecies.com/invaders/plants -terrestrial/giant-hogweed/ http://www.invadingspecies.com/invaders/plants -terrestrial/giant-hogweed/
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