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An Introduction to Invasive Species

An Introduction to Invasive Species. Jennifer West Coastal Training Program Coordinator. What are invasive species?. “Alien species whose introduction causes or is likely to cause economic or environmental harm or harm to human health” -Executive Order 13112. D. Cameron. P. Del Tredici.

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An Introduction to Invasive Species

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  1. An Introduction to Invasive Species Jennifer West Coastal Training Program Coordinator

  2. What are invasive species? “Alien species whose introduction causes or is likely to cause economic or environmental harm or harm to human health” -Executive Order 13112 D. Cameron P. Del Tredici J. Miller N. Loewenstein

  3. Ecological Impacts "On a global basis...the two great destroyers of biodiversity are, first habitat destruction and, second, invasion by exotic species” (E.O. Wilson) A. Cressler J. Novak ~42% of threatened or endangered species are at risk due to invasive species (The Nature Conservancy)

  4. Economic Impacts • High control and management costs • Infrastructure damage • Reduced productivity in forestry, agricultural, and fishing sectors • Property value reduction • Decreased tourism USGS RIDEM USGS RIDEM In total, invasive species cost the US ~ $120 billion/year (Pimentel et al., 2005)

  5. Social Impacts Recreation • Reduce aesthetics/visibility • Become entangled around motors • Obstruct access to boat ramps/lanes • Snag fishing lines Health • Disease vectors • Poisonous/caustic D. Elllis Invasive.org USDA progressivecharlestown.com

  6. Why are invasive species successful? • Grow rapidly • High reproductive rate • Reproduce at a young age • Tolerant of a wide variety of environmental conditions • Lack of natural controls athenssciencecafe

  7. How do invasive species get here? Pathways • Natural • Man-made • Landscaping industry • Ballast water discharge • Boat hull and trailers • Improper disposal and release • Live food trade RIDEM

  8. Japanese barberry Japanese knotweed Oriental bittersweet Autumn olive Multiflora rose Black swallowwort

  9. progressivecharlestown.com NOFA/RI Winter moth Hemlock wooly adelgid F. Lakatos NOFA/RI Gypsy moth USDA

  10. gobotany gobotany Purple Loosestrife Variable milfoil Fanwort RIDEM RIDEM Carp Asian clam

  11. Bryozoan Tunicates (Sea Squirts) Common Reed Green Crab Asian Shore Crab Oriental Grass Shrimp

  12. Emerald ash borer Zebra mussel Asian long-horned beetle nyis.info Chinese mitten crab Rock snot

  13. Management • Prevent • Education • Monitoring • Detect • Respond • Control • Mechanical • Chemical • Biological EDRR

  14. What can you do?

  15. Thank You!

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