100 likes | 185 Views
Invasive plants in PA. By Dan Inman Paul weisser and Katie Gordon . Definition of invasive speices. Def- Any species that has been introduced to an environment where it is not native, and that has since become a problem for a separate species . Characteristics of invasive plants.
E N D
Invasive plants in PA By Dan Inman Paul weisser and Katie Gordon
Definition of invasive speices Def- Any species that has been introduced to an environment where it is not native, and that has since become a problem for a separate species
Characteristics of invasive plants • not be native to North America; • spread, reproducing by roots or shoots; • mature quickly; • if spread by seed, produce numerous seeds • can grow in many different conditions
Some invasive plants in PA • Dutch elm disease • Hemlock woolly adelgid • Garlic mustard • Norway maple • Sycamore maple • Tree-of-heaven • Princess-tree
Dutch elm disease • Originated in Asia • Arrived in the 1930s in Cleveland • Was once a plant used in every day gardens but was found that it kills 100 if trees
Hemlock woolly adelgid • It was introduced Japan and China introduced accidentally around 1924 • Stretches from Maine to Georgia, including 42 counties in eastern half of PA • Kills hemlock trees with are home to birds and cover trout streams
Garlic Mustard • Brought to the US by European sealers • It has spread across the county • Found in over 30 states • Will choke out native plants
Tree-of-heaven • Native to China • Was introduced in the 1700s • Was introduced for decretive purposes • It drowns out native species; damages pavement and building foundations in urban areas • The states that are Highlighted in the picture have the tree in them
Princess-tree • Was introduced in 1840 • Was for decorative purposes • Can reach up to 50 feet tall • It grows very fast and destroys natural areas
The End By Dan Inman Katie Gordon and Paul Weisser