1. Aliens Among Us Invasive Species and Their Influence On Our World Part Two

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4. Princess or Empress Tree Paulownia tomentosa

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7. They should have listened to the old adage…. leaves of three, leave it be

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9. Kudzu Pueraria montana The original monster weed!

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12. Tree of Heaven Ailanthus altissima Rapid spread rate is shown by the appearance of many smaller plants around the base of the original invader.

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15. Japanese Honeysuckle Lonicera japonica

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18. Parrot’s Feather

19. Mathematics & Science Center Parrot’s feather can easily take over a pond. It blocks sunlight from reaching the water and reduces the amount of open water available for fish to swim.

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21. Veined Rapa Whelk Rapana venosa One of our newer invasives in the Chesapeake.

22. Mathematics & Science Center Rapa Whelk

23. Mathematics & Science Center This map shows the current known distribution of Rapa whelks in the Chesapeake Bay. Courtesy of Dr. Juliana Harding, Va. Institute of Marine Science Gloucester Point, VA Jharding@vims.edu Most current map available at http://www.vims.edu/mollusc/research/rapaw/merapmap.htmhttp://www.vims.edu/mollusc/research/rapaw/merapmap.htm

24. Mathematics & Science Center Northern Snakehead Channa argus Taken from a pond in Crofton, Maryland

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27. Because the Chesapeake Bay watershed is so extensive, it is more vulnerable to the introduction of aquatic invasives. So what can we do to stop the spread of aliens in our area?

28. Mathematics & Science Center Ways to stop the spread of invasive aliens: Use native plants in your yard or garden. If you do use an alien plant, make sure before you plant it that it’s not highly invasive. Don’t release unwanted pets or plants into the environment. When fishing, don’t dump live bait into the water. Or use live bait that is native to the area. Clean your boat & trailer of plants or other organisms after using it. Tell other people about the problem of invasive aliens.

29. Mathematics & Science Center Asian Oyster Crassostrea ariakensis

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