Mutualism and Commensalism

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Positive interactions occur when neither species is harmed and the benefits of the interaction are greater than the costs for at least one species. Facilitation is a synonym for positive interactions. Mutualism: Mutually beneficial interaction between individuals of two species (+/+). Commensalism: Individuals of one species benefit, while individuals of the other species do not…

Biotic Relationships: Commensalism, Niche, Parasitism

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Niche An organism’s ecological ROLE in the environment (NOT HABITAT!) All components of lifestyle and how they affect other organisms Three Types of Symbiosis Mutualism both species benefit Commensalism one species benefits, the other is unaffected Parasitism one species benefits, the other is harmed Lichen Lichen is really two organisms: algae and fungus. The fungus…