1. Community Interactions

2. Community Interactions
Community: Many species interacting in the same environment
Three types of interactions:
Competition
Predation
Symbiosis

3. Competition Defined: competing for resources
water, nutrients, light, food
occurs due to a limited number of resources
Competitive exclusion principle: no two species can occupy the same niche in the same habitat at the same time

4. Predation
Defined: when an organism captures and feeds on another organism.
Predator- hunter
Prey- hunted

5. Symbiosis
Symbiosis- any relationship where two species live closely together.
Three types
Mutualism
Commensalism
Parasitism

6. Mutualism Mutualism: both species benefit from a relationship.
Ex: Lichens (fungus and Algae)
Ex: Clown fish and anemones
Ex: Cleaner birds and crocodiles

7. Commensalism
Commensalism – One member of a symbiotic relationship benefits and the other is neither helped or harmed
Ex: Cattle and Birds
Birds eat insects stirred up by the cattle
Ex: Barnacles and whales
Barnacles grow on whale

8. Parasitism
Parasitism- One creature benefits and one creature is harmed
Ex: Tapeworm feeds in a humans intestines absorbing his/her nutrients

9. Kobe Kuiz What is a community?
Name the 3 types if community interactions.
When do organisms usually compete?
How do predators and prey interact?
Name the 3 types of symbiosis.
How does mutualism, commensalism, and parasitism differ?