Invasive species
What do you think an
invasive species in???
What is an Invasive
species?
 An Invasive species is an organism that
is not indigenous/ native to its
environment.
 Invasive species can be a plant, animal
or insect.
 Invasive species can be harmful to the
enviroment and costly.
Worst Invasive Species
 European Rabbit- Has been responible for the
extinction of over 8 different mamals
 Zebra Mussel- Has been detremental to a
variety of species in Great lakes region
 Ship Rats- Has caused the extinction of certain
birds, plants and small mammals
 Feral Pig- has done millions of dollars worth of
destruction done to property and farmland
Pros and Cons…
 Cons
 Can be harmful to
environment
 Can be costly
 Can destroy property
 Can be harmful to
native species
 Pros
 Can be used as a
form of pest controll
Invasive insects
 Can also cause drastic changes habitat
 Can endanger animal species. For
example certain insects eat other insects
that could be food for birds or small
rodents
 Can spread unique geographical
diseases
Asian Tiger Mosquito
 Originates in southern
and eastern asia
 First seen in 1985 in
Houston Texas
 Known for aggressive
biting (frequent)
 Do Not transfer
HIV/Aids but do give
EEE (eastern equine
encephalitis).
 EEE tend to affect
horses the most and
has a 80-90% fatality
rate.
Asian Longhorn Beetle
 Originally from
eastern Asia
 First noted in New
York 1996 and
Chicago 1998
 Infest large trees
such as Maples and
horse chestnut trees.
 Since there is no
natural predator
scientist say there
could be serious
ecological problems.
Invasive Animals
 Invasive animals are often introduce to
an area for the purpose of pest control.
 Invasive animals are hard to predict and
ultimately become a problem themselves
 For example five cats were brought to
South Africa for a mouse problem. Five
cats turned into 3400 cats and
endangered the bird population.
Zebra mussel
 Originally from the
Black Sea and
Caspian Sea in
Central Asia
 Accidentally brought
to America
 First seen in Great
lakes and have been
threatening natural
inhabitants because
of overpopulation.
Nutria
 Originally from South
America
 Brought to america to
be famed for there
furs but many were let
go because of failing
farmers.
 They eat the tall grass
and many other
nutrients important to
the wetlands of
Chesapeake Bay.
This animal has
become a major
problem to the food
web in the
Chesapeake bay.
Invasive plants
 Usually come From overseas
and are usually exotic looking or
have unique qualities. Such as
Drought intolerance or are
extremely fast growing.
 They can be dangerous to
native plants and search and kill
other plants. (example mile-aminute, purple loosestrife, and
kudzu)
 They reproduce in high numbers
and spread very extensively and
well.
 100 million dollars spent to
control invasive plants.
Types of invasive plant




GOOD
Wheat
Tomatoes
Rice
 BAD
 Lythrum salicaria
(purple loosestrife)
 Ailanthus altissima
(Tree of haven)
 Hedera helix (English
Ivy)
Tree of Haven (Ailanthus
altissima )
 Grows In abandoned
alleys
 Known for how
quickly trees are
formed and size of
growth
 Can cause sidewalk
damage or can even
emerge from already
cracked sidewalks
English Ivy
 Cover Most parts of
North America
 Notoriously known for
growing so high that
they cover up other
plants lower than itself
and killing them
 Unless maintained they
are advised to not be
planted
Overview
 Invasive species
can be costly to us
and our property
 Can cause disease
 Can be harmful to
other creatures and
there habitats
 Sometimes good but
overall are never a
good thing for
anybody
http://youtu.be/eOElBMVzYNw
0:00-2:05
Citations
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Citation Sources
Chris. “5 worst invasive species”. http://www.environmentalgraffiti.com/offbeat-news/the-5-worst-invasive-species-in-the-world/463.
November 20, 2011.
“Invasive Plants”. The United states National Arboretum. www.usna.usda.gov. December 4. 2009.
http://www.usna.usda.gov/Gardens/invasives.html . November 19, 2011.
Princeton University. "Do not harm invasive species that pollinate, study warns." ScienceDaily, 16 Nov. 2011. Web. 27 Nov. 2011.
http://www.sciencedaily.com/releases/2011/11/111116104514.htm .
Robert Hilton. “Two Invasive Insect Species from Asia:
The Asian Tiger Mosquito and The Asian Longhorn Beetle”. www.proquest.com. December 2000.
http://www.csa.com/discoveryguides/insect/overview.php . November 27, 2011.
Tara Ramroop. “Invasive Species”. www.Nationalgeographic.com. Educational.Nationalgeographic.com.
http://education.nationalgeographic.com/education/encyclopedia/invasive-species/?ar_a=4&ar_r=1#page=1 . November 17,
2011.
United States Environmental protection Agency. EPA. September 29, 2011. November 17. 2011.
http://water.epa.gov/type/oceb/habitat/invasive_species_index.cfm.
Citation of Pictures
Cheryl Moorehead. “Alainthus Altissima”. Photograph. www.Flickr.com .
http://www.flickr.com/photos/maximillian_millipede/1297310797/sizes/o/in/photostream/. November 27, 2011.
Michelle Manii . “Nutria”. Photograph. www.Flickr.com. Iamustique.
http://www.flickr.com/photos/11815777@N07/5979344635/sizes/o/in/photostream/ . November 27, 2011.
R. Anson Eaglin. “Asian Long horned Beetle”. Photograph. www.Flickr.com. Usda.gov. July 23, 2009.
http://www.flickr.com/photos/usdagov/4878925300/. November 27, 2011.
Smccan. “ Asian tiger misquito”. Photograph. www.Flickr.com. Smccan.
http://www.flickr.com/photos/deadmike/170729124/sizes/z/in/photostream/. November 27, 2011.
The Greenmiles. “English Ivy in Arlington”. Photograph. www.Flickr.com. The Greenmiles.
http://www.flickr.com/photos/7856240@N05/5195068381/sizes/l/in/photostream/. November 27, 2011.
The mighty Canadian Jucepig. “Seashells of the Seashore”. Photograph. www.Flickr.com. The mighty Canadian Juicepig.
http://www.flickr.com/photos/juicepig/2150744572/sizes/o/in/photostream/ . November 27, 2011.