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Invasive species

SNC 1D: OCTOBER 2010. Invasive species. Simpsons in Australia (1:39 min ) http://www.youtube.com/watch?v=CnzuQsClT5A. ALIEN SPECIES. Species that are accidentally or purposefully introduced to a new location Also known as: Introduced species Non-native species Exotic species

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Invasive species

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  1. SNC 1D: OCTOBER 2010 Invasive species Simpsons in Australia (1:39 min ) http://www.youtube.com/watch?v=CnzuQsClT5A

  2. ALIEN SPECIES • Species that are accidentally or purposefully introduced to a new location • Also known as: • Introduced species • Non-native species • Exotic species • Can also be…..INVASIVE SPECIES

  3. INVASIVE SPECIES • Non-native species that causes harm to the ecosystem in which it has been introduced • Often has no predators in new area so they reproduce faster than native species • How do they cause problems? • Take over habitat of native species • Invade their bodies • Disrupt ecosystem • Compete with native species for food and habitat

  4. EXAMPLES OF INVASIVE SPECIES Part 1 (7:05 min):http://www.youtube.com/watch?v=yS7zkTnQVaM Part 2 (6:39 min): http://www.youtube.com/watch?v=2ChwJiKKBdA • Asian Carp: • voracious feeders • can grow to 40-50 kg • consuming large quantities of food, muscling out native fish populations, and altering native habitat • August 14, 2009: • Reached barrier at Chicago • June 22, 2010: • Carp caught past barrier in Illinois

  5. EXAMPLES OF INVASIVE SPECIES: • Zebra Mussels: • First detected in great lakes in 1988 • Arrived in ballast water of ships • Ballast water: • water picked up by ships to stabilize them while at sea, released at destination • Effects: • Blocked pipelines • Cut people’s feet • Filter feeders, contain high amounts of pollutants, passed onto predators

  6. EXAMPLES OF INVASIVE SPECIES: • Purple Loosestrife: • Introduced from Europe in 1800s as ornamental plant • Invaded wetlands throughout eastern North America, choking out many native species • Altered wetland ecosystem for other species

  7. http://maps.google.com/maps?ll=37.062491,-95.677076&spn=66.711008,158.027344&t=f&z=3&ecpose=37.06250381,-95.67706712,19119373.11,0,0,0http://maps.google.com/maps?ll=37.062491,-95.677076&spn=66.711008,158.027344&t=f&z=3&ecpose=37.06250381,-95.67706712,19119373.11,0,0,0 Invasive Species inCootes Paradise • Carp - Fishway constructed to prevent carp from getting in, but allowing smaller fish - Water level manipulation also used • Purple Loosestrife - beetles released that only feed on purple loosestrife - native predators of loosestrife beetles are ladybeetles, true bugs, predaceous beetles, spiders, and possibly birds, frogs, and lizards More info - http://jessiealley.wordpress.com/tag/cootes-paradise/

  8. WHAT CAN YOU DO? • Do not release alien plants or animals (including pets and live bait) into the wild. • Do not bring fruit, vegetables, plants, or animals with you across borders. • Before taking a recreational trip, inspect and clean fishing equipment, boats, trailers, recreational vehicles, and other items that may harbour hitch-hiking invaders. • Do not transport over long distances firewood or other wood with bark attached. Reference: Hinterlands Who’s Who: Issues and Topics: Invasive and Alien Species in Canada, http://www.hww.ca/hww2.asp?id=220

  9. Consequence Mapping • What is it? - a visual tool for illustrating the many kindsof future effects related to a real or imaginary event, issue or problem - ask a “What if?” question and brainstorm all the consequences - Let’s try an example: What if we ban cars? - We can categorize our consequences as social, scientific, legal and ethical, economic, personal or environmental.

  10. Home Fun !: • Study for Chemistry Unit test tomorrow (Wednesday)! • Complete handout (due Thursday) a) Read pages 59 & 60 and answer the questions b) Complete the consequence map on invasive species

  11. Cane Toad • 1935 introduced in Australia to eat scarab beetles destroying sugar cane fields • only 100 toads imported from Hawaii, soon exploded into 10 000 • shortly after introduction, found out that toads unable to fly, climb or scale sugar cane to eat the beetles that lived in upper portion of cane • toads became voracious predators to almost everything except the beetle Cane toad videoclip (8:12 min): http://www.youtube.com/watch?v=RpNl8AAFyL4&feature=related

  12. Snakehead • Aggressive • can grow to 1.5 meters in length • can survive out of water for days • can also jump into boats, rip their prey in half or sever a human arm with their powerful jaws • Dubbed “Frankenfish” by U.S. media • well adapted to cold water • no natural predators in North America Snakehead videoclip (3:40 min): http://www.youtube.com/watch?v=nmU7etSYYqI Snakehead info: http://www.csa.com/discoveryguides/snakehead/overview.php More info: http://www.invasivespeciesinfo.gov/aquatics/snakehead.shtml

  13. Asian Longhorned Beetle • 1996 – arrived accidently in cargo from Asia • Destroys hardwood trees, including maple (50% of trees in GTA are maple) • Potential to destroy 50% of harwood forests in North America • No known natural enemies in Canadian forests Video (2:45 min): http://www.youtube.com/watch?v=wt4LEWiXu3U More info: http://www.mnr.gov.on.ca/en/Business/Forests/2ColumnSubPage/STEL02_166979.html

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