Transcript Invasive, Endangered, and Reintroduced species

INVASIVE, ENDANGERED, AND
REINTRODUCED SPECIES OF
PENNSYLVANIA
Mackenzie DeGreen
Period. 3 Biology
ENDANGERED SPECIES
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Endangered species- a species whose numbers are so small
that the species is at risk of extinction.
Short-eared Owl- agricultural practices make habitats
unsuitable in PA with no suitable nesting areas.
Blackpoll Warbler- The Blackpoll Warbler is endangered
because of habitat destruction of spruce swamps.
Indiana Bat-Humans come into hibernation caves in winter
it disturbs bats and causes them to burn up their fat
reserves.
ENDANGERED SPECIES
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Northeastern Bulrush- Destruction of wetlands, Bulrush
natural habitat.
Virginia Spiraea- Human induced threats watershed
development and the introduction of non-native species.
5 MOST
COMMON REASONS FOR
ENDANGERMENT AND ENDANGERMENT
PREVENTION
Habitat Destruction
 Introduction of Exotic Species
 Overexploitation
 Disease
 Pollution
 What can be done to prevent endangerment?
 We can prevent endangerment by educating
other people on how to not intrude on natural
habitats of organism preventing certain habitat
destruction.
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INVASIVE SPECIES
Introduced species- a species living outside of it’s
natural geographic range can be deliberately or
accidently introduced or brought into the new
ecosystem.
 Native species- an animal or plant originating in a
region or geographic range.
 Invasive species- spreading or taking over. Invasive
species often take over or dominate a habitat
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INVASIVE SPECIES
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Asian Clam- Corbicula fluminea Can damage irrigation canals.
The impacted in the environment is that it competes other
organisms for limited sources.
Red-eared slider(turtle)- Trachemys scripta elegans. Red-eared
slider turtles can cause limited food sources.The role the redeared slider turtle is competing with pacific pond turtle.
Spiny Water Flea-Bythotrephes cederstroemi- The spiny water flea
can produce offspring in 2 weeks asexually. The spiny water fleas
niche in a environment is completion with small fishes.
INVASIVE SPECIES
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Hydrilla- Hydrilla verticillata- Grows at a very fast rate and
covers alot of lakes. The niche in the enviornment is the fregency
of the hydrilla.
Purple loosestrife-Lythrum salicaria-often forms dense stands
that prevent growth of native aquatic plants. The niche in the
environment is that it takes up several land areas.
5 OF THE MOST COMMON WAYS INVASIVE
SPECIES GET INTO OUR COUNTRY
Intentional Introductions
 Unintentional Introductions
 Unwanted Pets
 “Hitchhiking”
 Hidden in foreign materials
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4 OF THE MOST COMMON WAYS THAT INVASIVE SPECIES NEGATIVELY
AFFECT OUR ENVIRONMENT
Spread Disease
 Compete for the same natural resources
 Change the nature of the habitats
 Disrupt the food chain
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REINTRODUCED/ EXTIRPATED
SPECIES SEGMENT
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Delmarva fox squirrel
Reintroduced species- A species that humans have placed into an
ecosystem or community (either accidentally or intentionally) in
which it does not naturally occur
Extirpated species- A Species that no longer exists in the wild in a
certain country or area, but can be found else where in the world.
Extinct in a specific area
This such species of squirrel was reintroduced in between 1978 to
1992.
They usually travel across open ground rather than through the
trees.
This squirrel was reintroduced to save the Delmarva fox squirrel
species.
Reintroducing this species required none human contact.
RESOURCES
Pennsylvania Fish and Boat Commission
 www.fish.state.pa.us/ais.htm
Pennsylvania Game commission
 http://www.portal.state.pa.us/portal/server.pt?open=514&o
bjID=621014&mode=2
http://animals.about.com/cs/conservation/g/introduced.htm
Endangeredspecie.com
 http://www.endangeredspecie.com/causes_of_endangerment
.htm
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http://ecos.fws.gov/tess_public/pub/stateListingAndOccurre
nceIndividual.jsp?state=PA