Transcript Biology Powerpoint Project

Invasive, Endangered, and
Reintroduced Species of
Pennsylvania
By: Patrick Albert
Endangered Species Segment
Definition of…
5 of the most common reasons for endangerment
What can be done to prevent endangerment?
3 endangered animals found in PA and why they specifically are endangered +
Photos
• 2 endangered plants found in PA and why they specifically are endangered +
Photos
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Endangered Species Segment
• Definition — species threatened by extinction: a species whose population is
so little of is on a quick decline, that the species may soon become extinct.
5 of the most common reasons for
endangerment
1.
2.
3.
4.
5.
Habitat loss
Introduced species
Pollution
Population growth
Over-consumption/ Over-Exploitation
What can be done to prevent
endangerment?
• One way to prevent the harm of a species is to protect a species habitat.
Everyone and everything needs a place live.
• One over looked problem is poaching or illegal hunting. This is done
to obtain furs or “trophies” that they aren’t aloud to have.
• Also, pollution will harm any habitat including water ways. Fish can
be contaminated and then anything that eats them can be contaminated.
So recycle and try to avoid pollution and go green.
3 endangered animals found in PA and why
they specifically are endangered
Bog Turtle
Blackpoll Warbler
Gravel Chub
Bog Turtle
• The bog turtle does not need much room to live but its habitat
has been destroyed and is occupied mostly by humans.
Blackpoll Warbler
• The Blackpoll Warbler is endangered due to the destruction of their
breeding grounds. They have less and less room to nest and the number
of offspring produced decreases.
Gravel Chub
• The gravel chub is on a decline in population because of the
habitat destruction. The crick chub lives in fast moving water
but silt build up has limited their living area.
2 endangered plants found in PA and why
they specifically are endangered
Northeastern Bulrush
White Milkweed
Northeastern Bulrush
• This plant has been puzzling biologist for decades with its fluctuation
in population. The plant is endangered due to habitat destruction. The
plant has a “plan of recovery” hoping to take it off of the endangered
list.
White Milkweed
• The Milkweed is endangered due to habitat loss or altercation. Farming
and the altercation of grass fields destroys the most common habitats
for the plant.
Native, Introduced, and Invasive
Species
• Native Species — It is a species that naturally lives there and is
sustainable off the environment
• Introduced Species — A specie that is brought into a new
environment or ecosystem that is not commonly found there. Its due to
human interaction.
• Invasive Species — An invasive species is not naturally occurring to a
specific environment and whose introduction can or will cause
economic or environmental harm or harm to human health.
The most common ways invasive
species get into our country
1.
2.
3.
4.
5.
They are shipped over accidently in cargo
Some are in woods transferred from other countries
Internet buying of pets or species from other areas
Oriental plants for decoration
They are purposely brought to control other populations of
species
4 of the most common ways that invasive species
negatively affect our environment(s)
1.
2.
3.
4.
The change the food webs
The create competition for food and living area
The can displace Native Species
The grow and reproduce rapidly with sometimes o known
predators
3 invasive animals in PA
• Asian Tiger Mosquito-Aedes albopictus – This Mosquito has a pestering bite. It
spread disease and viruses in its natural environment and its introduced
environment, it causes irritation and a chance of spreading disease.
• Cane Toad-Rhinella marina- The cane toad is native to South America and has
the same niche to both environments. It preys and competes with native species
and is highly toxic to other species.
3 invasive animals in PA
• European Gypsy Moth-Lymantria dispar- The Moth is natively from
Europe and its would defoliate trees and shrubbery out of hand. Here
the moth is used for silk production.
2 invasive plants found in PA,
• Scotch Broom-Cytisus scoparius –The plant can grow well in different areas but it
grows so well it can choke out native plants and it did that in its native country.
• Spotted Napweed-Centaurea stoebe –The plant was accidently introduced and
chokes out native plants in the U.S. The plant also chokes foliage for animals to
eat. It was a plant that choked out other plants in its native country.
REINTRODUCED/EXTIRPATED SPECIES
SEGMENT
• Reintroduced-The act of trying to bring a species back to its
natural environment by restarting it in an area.
• Extirpated-The sudden disappearance of a species but its not
necessarily extinct
A New Start in Pa
• In the early 1900’s, the American elk was reintroduced. There was 117
elk to be exact. Later on in 1999. the distributed the elk across the
state. The program has been a success. The food webs have been stable
and the habitats seem to be balanced.
Table of Contents
• USDA: Invasive Species
http://www.invasivespeciesinfo.gov
• Pennsylvania Fish and State
http://www.fish.state.pa.us
• Ontario University of Natural Resources
http://www.mnr.gov.on.ca
• Endangered Species
http://www.endangeredspecie.com/states/pa.ht
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