Invasive, Endangered and Reintroduced Species of PA

1. Invasive, Endangered and Reintroduced Species of PA Alexis Gressly Pd.1

2. What is an Endangered Species??? • A species who’s population is declining; if the species is not saved then it faces extinction.

3. The 5 most common reasons for endangerment…. • Habitat Desruction • The Introduction of Foreign Species into their habitat • Overexploitation • Natural Causes • Human Intervention

4. How can we prevent Endangerment? • Control the pollution • Limit Human Intervention • Building dams, deforestation, testing on the plants and animals. • Build National Parks so protect the animals/plants that are on the border of extinction.

5. Endangered Animals • Least Shrew • Cryptotisparva • Natural Predators kill the Least Shrew.

6. Endangered Animals • Indiana Bat • Myotissodalis • The disturbance of their colonies by human interaction cause endangerment.

7. Endangered Animals • Delmarva Peninsula Fox Squirrel • Sciurusnigercinereus • The are on the endangered list because their historical population is diminishing

8. Endangered Plant Species • North Eastern Bulrush • Scirpusancistrochaetus • Development of land and land practices endanger this species.

9. Endangered Plant Species • Small Whorled Pogonia • Isotriamedeoloides • Urban expansion is destroying their habitats.

10. Invasive Species: Segment 2

11. What does this mean??? • Native Species- a species that normally lives and thrives in a particular place. • Introduced Species- a species that is accidentally brought into another ecosystem from human intervention. • Invasive Species- a foreign species who, when introduced into an enviroment, could destroy it.

12. Most common ways invasive species get into our country • Human Intervention • Mortality and Natality rate • Immigration • Food Sources are abundant • Hiding from a predator

13. Most common ways invasive species negatively affect our enviroment • Eat the main food source(s) for that specific enviroment • Bring in disease • Kill off some other species intentionally • Take up the space meant for the native species

14. Invasive Animal Species • Spiny Water Flea • Bythotrephescederstroemi • They mostly live in freshwater systems. • They don’t really have a role in their environments. They do control the plankton population. • They don’t cause many problems either.

15. Invasive Animal Species • Red Eared- Slider Turtle • Trachemysscriptaelegans • They inhabit in most freshwater systems like ponds and lakes. • The turtles can be very aggressive toward mating with the native turtle species. • They contribute to the environment by providing a food source for predators to survive and control the fish population.

16. Invasive Animal Species • Sea Lamprey • Petromyzonmarinus • They will would other fish because of the competiton for food and mating. • Their natural environment is coastal and freshwater systems. • They eat the native fish and decrease that population.

17. Invasive Plant Species • Purple Loosestrife • Lythrumsalicaria • They inhabit disturbed and healthy wetland habitats. • They can rapidly degrade wetlands making them diminish in size. • Their role in the environment is that they can take over wetlands with speed.

18. Invasive Plant Species • Hydrilla • Hydrillaverticillata • Their niche in the environment is that they compete for sunlight and may destroy plants in the process. They can also displace plants such as pondweeds and eelgrass. This is also a problem they pose. • They live in freshwater and marine habitats.

19. Reintroduced Species Segment

20. Definition of Invasive and Reintroduced Species • Invasive Species- a foreign species whose introduction into the specific environment is likely to cause environmental , economical, or human harm. • Reintroduced Species- the deliberate release of a certain species into the wild in places inhabited by the native species

21. Example of Reintroduced Species • Pennsylvania Elk population • Their population had gone extinct in North America and commissioners had relocated them to many state including Pennsylvania. Reintroducing the population has helped their population return to stable number.

22. Work Cited • www.endangeredspecie.com • www.actoceana.org • www.portal.state.pa.us • www.earthsendangered.com • www.defenders.org • www.fishstate.pa.us • www.invasivespeciescouncil.com • www.dcnr.state.pa.us • www.mhhe.com • www.fws.gov