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Endangered specie is a species whose
population is so low that the species is at
risk of going extinct.
 5 of the most common reasons for
endangerment are habitat loss,
pollution, competition from other
species, disease, and predation.

Protect animals habitats
 Give the animals space to live
 Recycle, reduce, and reuse
 Control introduced plants and animals in
an area
 Plant plants that are native to the area

Indian bat- human disturbance
 Northern flying squirrel- deforestation
 Dickcissel- human development

American waterwort- competition from
invasive wetland species
 Appalachian oakfern- deforestation

Invasive species are non-native species
that take over an area that was all ready
inhabited by native species
 Introduced species are non-native
species that come into an area by
human activity deliberate or some times
accidental
 Native species are species that are in an
area for natural reasons

They can hitch rides on ships
 They can be in wood products
 They can be in ornamental plants
 They could be in the pet trade
 Some get smuggled illegally into the US

They can carry diseases
 They can change the food webs
 They can decrease biodiversity
 Some can even effect the soil that they
live on
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
Sea lamprey, Petromyzon marinus, originated
in Lake Ontario, it’s niche in both it’s natural
and introduced environments are as a
parasite, it cause other fish to die.
Asian Clam, Mollusks-Bivalves, originated in
Asia, it’s niche in both it’s natural and
introduced environments are as a food source
for other animals, it decreases biodiversity.
Red-eared slider, Trachemys scripta elegans, it
is native to the southern united states, it’s niche
is to be a predator and a prey in its natural and
introduced environments, it is out competing
the native western pond turtle.
Hydrilla, Hydrilla Verticillata, no one is
exactly sure where it originated but people
think Asia, it’s niche in both it’s natural and
introduced environments are to shade the
species under the water, This is making it
hard for fish to get sunlight.
 Purple Loosestrife, Lythrum Salicaria, is
native to Europe, it’s niches are to feed
certain beetles in it’s natural and
introduced environments, it doesn’t give
the native plants places to grow.

Reintroduced species are species that
got put back into the wild in an area
that they formerly lived in.
 Extirpated species are species that do
not exist in the wild in one area but can
be found elsewhere in the world.

The river otter was reintroduced into PA
in 1982. The otters were captured by the
method of live trapping
 75 otters were reintroduced into PA

Endangered specie
www.endangeredspecie.com

U.S. department of agriculture
www.usda.gov

Game Commission
www.pgc.state.pa.us

Thinkquest
www.thinkquest.org

Wildlife conservation
www.nwf.org

Fish and boat commission
www.fishandboat.com

Early journal content
www.jstor.org

Google
www.google.com
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