Examples of Invasive Species - PowerPoint PPT Presentation

1 / 12
About This Presentation
Title:

Examples of Invasive Species

Description:

Channa argus ... man caught a strange fish in Maryland, and handed over ... The fish that he had caught and re-released in Crofton was soon identified as a ... – PowerPoint PPT presentation

Number of Views:330
Avg rating:3.0/5.0
Slides: 13
Provided by: ibuen
Category:

less

Transcript and Presenter's Notes

Title: Examples of Invasive Species


1
Examples of Invasive Species
2
Rabbits Introduced to Australia and New Zealand
have no natural predators
3
Tree-of-heaven, Ailanthus altissima
  • It grows very quickly, and competes aggressively
    for sunlight in newly developing forests.

4
Purple Loosestrife, Lythrum salicaria,
  • Attempts to dig it out usually backfire because
    purple loosestrife resprouts from root fragments
    disturbing the soil just provides more room for
    it to spread

5
Kudzu Pueraria lobata
  • Kudzu is a vine that when left uncontrolled will
    eventually grow over almost any fixed object in
    its proximity including other vegetation. Kudzu,
    over a period of several years will kill trees by
    blocking the sunlight

6
Asian Tiger MosquitoAedes albopictus
  • Arrived accidentally in tires imported from Japan
  • Can transmit viruses such as Eastern equine
    encephalitis and West Nile virus

7
European Gypsy MothLymantria dispar
  • imported for silk production in 1869
  • Defoliates trees

8
Burmese PythonPython molurus bivittatus
  • An American alligator and a Burmese python locked
    in a struggle to prevail in Everglades National
    Park.
  • This python appears to be losing, but snakes in
    similar situations have apparently escaped
    unharmed, and in other situations pythons have
    eaten alligators. Photo by Lori Oberhofer,
    National Park Service.

9
Northern Snakehead Channa argus
  • May 2002, a fisher man caught a strange fish in
    Maryland, and handed over a photograph of it to a
    government office in Annapolis. The fish that he
    had caught and re-released in Crofton was soon
    identified as a Northern Snakehead, native to
    China

http//www.waterencyclopedia.com/Oc-Po/Pollution-b
y-Invasive-Species.html
10
Zebra Mussels Dreissena polymorpha
  • originated in the Balkans, Poland, and areas
    within the former Soviet Union.
  • The species was accidentally introduced into the
    Great Lakes in 1988 via the ballast water of
    ships.
  • By 1990, it had spread to all the Great Lakes. In
    1991, zebra mussels escaped the Great Lakes Basin
    and found their way into the Illinois River,
    giving them access to the entire Mississippi
    River Basin.
  • As of 2002, they had expanded further, and were
    found from Virginia to New York, bringing the
    total number of states with documented
    occurrences to twenty three.

11
Wanted Poster
12
http//video.nationalgeographic.com/video/player/k
ids/animals-pets-kids/reptiles-kids/snake-two-head
ed-kids.html?sourceG2114c
Write a Comment
User Comments (0)
About PowerShow.com