1. How Do Different Species Interact with Each Other?

2. An Organism’s Niche Niche – unique role of a species within an ecosystem. –Includes the species’ home, environmental factors necessary for survival, & species interactions with other species. –Ex: A bison’s niche is being the largest grazing herbivores on American grasslands.

3. Niche vs. Habitat The habitat is the location where the species lives while the niche the species’ interactions in & with the habitat. Habitat Niche

4. InteractionDescriptionExampleSpecies A Species B Interactions Between Two Species

5. InteractionDescriptionExampleSpecies A Species B CompetitionDifferent organisms attempt to use the same limited resource Fox & coyote both eat rabbits  Interactions Between Two Species

6. Competition

7. InteractionDescriptionExampleSpecies A Species B CompetitionDifferent species attempt to use the same limited resource Fox & coyote both eat rabbits  PredationOne species feeds on another species (or organism) Fox hunts & eats rabbits Interactions Between Two Species

8. Predation 1)What happens to the lynx population when the snowshoe hare population increases? 2)What happens to the snowshoe hare population when the lynx population declines?

9. InteractionDescriptionExampleSpecies A Species B CompetitionDifferent species attempt to use the same limited resource Fox & coyote both eat rabbits  PredationOne species feeds on another species (or organism) Fox hunts & eats rabbits ParasitismOne species lives in or on another species & feeds on it Tick sucks blood of a deer  Interactions Between Two Species

10. Parasitism

11. InteractionDescriptionExampleSpecies A Species B CompetitionDifferent species attempt to use the same limited resource Fox & coyote both eat rabbits  PredationOne species feeds on another species (or organism) Fox hunts & eats rabbits ParasitismOne species lives in or on another species & feeds on it Tick sucks blood of a deer  MutualismDifferent species help each other to survive Bee drinking nectar from flowers, pollinating the plant Interactions Between Two Species

12. Mutualism

13. InteractionDescriptionExampleSpecies A Species B CompetitionDifferent species attempt to use the same limited resource Fox & coyote both eat rabbits  PredationOne species feeds on another species (or organism) Fox hunts & eats rabbits ParasitismOne species lives in or on another species & feeds on it Tick sucks blood of a deer  MutualismDifferent species help each other to survive Bee drinking nectar from flowers, pollinating the plant CommensalismOne species benefits & the other is not harmed Birds nesting in trees Interactions Between Two Species

14. Commensalism

15. Symbiosis Symbiosis is the living together of unlike organisms where at least one organism benefits. –Ex: Mutualism, Commensalism, & Parasitism