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Invasive Species

Invasive Species. Competition and Succession Disrupted. Introduction. Species that evolved in the ecosystems in which they are found are referred to as NATIVE SPECIES. When a species that evolved somewhere else is brought into another ecosystem, it is referred to as an INTRODUCED SPECIES.

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Invasive Species

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  1. Invasive Species Competition and Succession Disrupted

  2. Introduction • Species that evolved in the ecosystems in which they are found are referred to as NATIVE SPECIES. • When a species that evolved somewhere else is brought into another ecosystem, it is referred to as an INTRODUCED SPECIES. • When an introduced species does so well in its new environment that it threatens the ecological balance of one or more native species it is referred to as an INVASIVE SPECIES.

  3. Native Species of Plants and Animals in Pennsylvania http://www.netstate.com/states/symb/flowers/images/mountain_laurel.jpg http://www.whitetailbsa.org/whitetail.jpg http://projects.juniata.edu/currents/kids/Brooktrout.jpg

  4. Introduced Species of Plants and Animals in Pennsylvania http://www.fish.state.pa.us/pafish/raintrtm.jpg http://www.hort.purdue.edu/ext/senior/fruits/images/ large/walnutenglishtree.jpg http://ohric.ucdavis.edu/photos/fullsize/Japanese-maple.jpg

  5. Invasive Species of Plants and Animals in Pennsylvania http://wihort.uwex.edu/Phenology/GypsyMoth.html http://www.forestry.ky.gov/NR/rdonlyres/DB6C6A0E-9E0D-4014-94FE-26B82E991890/0/PurpleLoosestrife2.jpg http://plainfieldtrees.blogspot.com/2007/08/ailanthus-altissima-tree-that-grows-in.html http://www.pgc.state.pa.us/pgc/lib/pgc/wildlife/feral_swine/hogs3_closeup.jpg

  6. What’s the problem? • Invasive Species • Unfair competition • Reduction in biodiversity. • Altered secondary succession • Harmful to local food webs. • Hybridization • Invasive species negatively impact half of all organisms listed on the federal endangered species list. • Nationally invasive species cost the US $100 billion each year.

  7. What can you do? • Volunteer to help remove invasive species. • Landscape with local plants • Keep outdoor gear clean and sanitized. • Support businesses that take steps to prevent the spread of invasive species.

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