Aliens Among Us Invasive Species and Their Influence On Our World A lesson from the Mathematics & Science Center.

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Presentation transcript:

Aliens Among Us Invasive Species and Their Influence On Our World A lesson from the Mathematics & Science Center

Aliens Among Us Good Alien……… Just like in “Men in Black” ………Bad Alien

Mathematics & Science Center Some aliens add beauty to the world… Mute Swan Cygnus olar Courtesy Chesapeake Bay Program

Mathematics & Science Center Some aliens add beauty to the world… But they may create many problems for their habitat. Mute Swan Cygnus olar Courtesy Chesapeake Bay Program

Mathematics & Science Center Some aliens add beauty to the world… But they may create many problems for their habitat. Mute Swan Cygnus olar These swans feed on beds of submerged aquatic vegetation (SAV’s), which are vital to the ecosystem of the Chesapeake Bay. Courtesy Chesapeake Bay Program

Mathematics & Science Center Some aliens do not cause many problems or are worth any trouble they may cause: “Eat More Chicken” NO WAY! Kansas Assoc. of Wheat Growers Chris Vogel Photo courtesy

Mathematics & Science Center Zebra Mussel Dreissena polymorpha One of the more invasive of the invasive species, and one that has received lots of publicity is the

Mathematics & Science Center They first appeared in the U.S. in the Great Lakes and have since moved into many other waterways.

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center National Atlas of the United States U. S. Geological Survey

Mathematics & Science Center And now they’ve been found in Virginia!

Mathematics & Science Center Millbrook Quarry Courtesy of USGS

Mathematics & Science Center Why are Zebra Mussels so bad? So What’s the Big Deal? 1. Their SMALL size! Charles Ramcharan Wisconsin Sea Grant

Mathematics & Science Center Craig Czarnecki, Michigan Sea Grant

Mathematics & Science Center Notice the baby zebras attached to the adults 3. Easily transported by careless boaters 2. Their fast rate of reproduction Ladd Johnson NOAA/Great Lakes Environmental Research Laboratory David Dennis College of Biological Sciences, Ohio State University

Mathematics & Science Center 4. Harms other organisms Clam and Crayfish covered with Zebras Ontario Ministry of Natural Resources GLSGN Exotic Species Library Fred Synder, Ohio Sea Grant

Mathematics & Science Center How Do Aliens Get Here? By Land By Sea By Air Or….. the number one answer is: People

Mathematics & Science Center How Do Aliens Get Here? Many of our aquatic aliens arrive in ballast water Courtesy MSC

Mathematics & Science Center How Do Aliens Get Here? Courtesy MSC

Mathematics & Science Center Courtesy MSC

Mathematics & Science Center Can you identify an alien by looking at it? NO! Martha Vogel Courtesy MSC

Mathematics & Science Center Can you tell whether an alien is good or bad just by looking at it? NO! Courtesy Chesapeake Bay Program

Mathematics & Science Center Research it: 1. The biology of the organism 2. The native habitat 3. The method of reproduction 4. Its natural enemies

Mathematics & Science Center Signs that an alien might be an invasive: Fast growing and rapid maturity High reproductive rate – produces lots of seeds or offspring Can out-compete native species No natural controls Is harmful to other organisms

Mathematics & Science Center End of Section One Now you will work together to research an alien.