GK-12 Fellows Liz Schultheis & Melissa Kjelvik. What is an invasive species?  Introduced from another country by people  Grows and takes over an area.

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Presentation transcript:

GK-12 Fellows Liz Schultheis & Melissa Kjelvik

What is an invasive species?  Introduced from another country by people  Grows and takes over an area  Can harm native species  Cost people a lot of time and money

Do you know of any invasive species?

“To combat these and other invasive species, which could threaten the Great Lakes ecosystem and its $7 billion fishing industries, the resources defense council has proposed physical barriers to separate Chicago waterways and Lake Michigan from the Mississippi.” - NY Times November 2011

 Easily moved to new locations by humans  Ability to reproduce quickly and spread far  Nothing eats them! No natural enemies  Take habitat away from native species

Purple loosestrife Invasive Pickerel- weed Native KBS GK-12 Project

Purple Loosestrife Move forward: Growth: Seeds: Disperse: Move backward: Herbivory: Disease: Fire: Drought: Human disturbance: Pickerelweed Move forward: Growth: Seeds: Disperse: Move backward: Herbivory: Disease: Fire: Drought: Human disturbance: KBS GK-12 Project

Purple Loosestrife Move forward: Growth: Seeds: Disperse: Move backward: Herbivory: Disease: Fire: Drought: Human disturbance: KBS GK-12 Project  All species can grow, produce seeds, and disperse  Abilities differ between species

Purple Loosestrife Move forward: Growth: Seeds: Disperse: Move backward: Herbivory: Disease: Fire: Drought: Human disturbance: KBS GK-12 Project  Some actions harm native species more than invasive species  These actions facilitate invasion

Purple Loosestrife Move forward: Growth: Seeds: Disperse: Move backward: Herbivory: Disease: Fire: Drought: Human disturbance: KBS GK-12 Project  Some actions harm invasive species more than native species  These actions resist invasion

KBS GK-12 Project