1. Organism Diversity in Ecosystems 12/14/09 EQ: How do organisms diversify in an ecosystem? 12/13/2009 Bitsy Griffin Ecosystems 3

2. Getting the idea Ecosystems are home to many different organisms. Ecosystems host living and non-living parts. 12/13/2009 Bitsy Griffin Ecosystems 3

3. Getting the idea Ecosystems can host many different organisms because each organism uses the ecosystem differently. 12/13/2009 Bitsy Griffin Ecosystems 3

4. Populations & Communities Biotic organizations – Grouped into different levels: Populations Communities 12/13/2009 Bitsy Griffin Ecosystems 3

5. Population First level. Group of same species living in the same place. 12/13/2009 Bitsy Griffin Ecosystems 3

6. Population Black tailed deer in a forest 12/13/2009 Bitsy Griffin Ecosystems 3

7. Community All of the organisms that live in a forest Including the black tailed deer 12/13/2009 Bitsy Griffin Ecosystems 3

8. Habitats & Niches Ecosystems can support many populations. A forest can support 12/13/2009 Bitsy Griffin Ecosystems 3

9. Habitats & Niches The black tailed deer 12/13/2009 Bitsy Griffin Ecosystems 3

10. Habitats & Niches Rabbits 12/13/2009 Bitsy Griffin Ecosystems 3

11. Habitats & Niches Foxes 12/13/2009 Bitsy Griffin Ecosystems 3

12. Habitats & Niches Snakes 12/13/2009 Bitsy Griffin Ecosystems 3

13. Habitats & Niches And many other things because each population has it’s own Habitat. 12/13/2009 Bitsy Griffin Ecosystems 3

14. Habitat The physical space used by a population. Habitat means Home Includes living and nonliving parts of ecosystem 12/13/2009 Bitsy Griffin Ecosystems 3

15. Habitat A black tailed deer’s habitat includes: 12/13/2009 Bitsy Griffin Ecosystems 3

16. Habitat trees 12/13/2009 Bitsy Griffin Ecosystems 3

17. Habitat Rocks 12/13/2009 Bitsy Griffin Ecosystems 3

18. Habitat These are shared with the other animals 12/13/2009 Bitsy Griffin Ecosystems 3

19. Niche Describes lifestyle of animal Includes the habitat AND 12/13/2009 Bitsy Griffin Ecosystems 3

20. Niche Climate 12/13/2009 Bitsy Griffin Ecosystems 3

21. Niche Food 12/13/2009 Bitsy Griffin Ecosystems 3

22. Niche How it behaves 12/13/2009 Bitsy Griffin Ecosystems 3

23. Niche Kestrels and owls 12/13/2009 Bitsy Griffin Ecosystems 3

24. Niche Both carnivorous Eat small mammals like mice & voles 12/13/2009 Bitsy Griffin Ecosystems 3

25. Niche BUT Owls are nocturnal Kestrels hunt in the day 12/13/2009 Bitsy Griffin Ecosystems 3

26. Niche They do not compete for food because they don’t hunt at the same time. They have different niches. 12/13/2009 Bitsy Griffin Ecosystems 3

27. Competition If two organisms occupy the same niche, They compete for resources 12/13/2009 Bitsy Griffin Ecosystems 3

28. Competition One organism usually becomes more efficient at finding & using resources They other may move or die out 12/13/2009 Bitsy Griffin Ecosystems 3

29. Competition Rainbow Trout & Brown Trout 12/13/2009 Bitsy Griffin Ecosystems 3

30. Competition They live in the same stream They eat the same food They share a habitat 12/13/2009 Bitsy Griffin Ecosystems 3

31. Competition BUT they feed in different parts of the stream So they don’t directly compete 12/13/2009 Bitsy Griffin Ecosystems 3

32. EQ: How do organisms diversify in an ecosystem? 12/13/2009 Bitsy Griffin Ecosystems 3

33. Questions: What is the physical space occupied by a population called? Habitat 12/13/2009 Bitsy Griffin Ecosystems 3