1. Ecological Relationships

2. Competition and Predation Competition – occurs when organisms of the same or different species attempt to use an ecological resource in the same place at the same time Competition – occurs when organisms of the same or different species attempt to use an ecological resource in the same place at the same time Predation – interaction in which one organism captures and feeds on another organism Predation – interaction in which one organism captures and feeds on another organism

3. Symbiosis Symbiosis – relationship in which two species live closely together Symbiosis – relationship in which two species live closely together Symbiotic relationships Symbiotic relationships Mutualism Mutualism Parasitism Parasitism Commensalism Commensalism

4. Mutualism Symbiotic relationship in which both species benefit from the relationship Symbiotic relationship in which both species benefit from the relationship Example: The Red-billed Oxpecker eats ticks on the Buffalo's coat Example: The Red-billed Oxpecker eats ticks on the Buffalo's coat

5. Parasitism Symbiotic relationship in which one organism lives in or on another organism (the host) and consequently harms it. Symbiotic relationship in which one organism lives in or on another organism (the host) and consequently harms it. Example: Tick feeding off the blood of a dog Example: Tick feeding off the blood of a dog

6. Commensalism Symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed Symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed Example: Barnacles on a whale and clown fish living amongst sea anemones Example: Barnacles on a whale and clown fish living amongst sea anemones