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Published byMarianna McBride Modified over 9 years ago
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Living Together: Community Interactions
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Symbiosis “Sym—biosis” = “Together—Living” Definition: Symbiosis is a close ecological relationship between the individuals of two (or more) different species.
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Who Benefits? Sometimes a symbiotic relationship benefits both species, sometimes one species benefits at the other's expense, and in some cases neither species benefits.
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Types of Interactions Commensalism, Mutualsim, Interspecific Competition, Predation, and Parasitism are all examples of symbiotic relationships.
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Neutral Relationship Neither species benefits from the interaction
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Commensalism One species benefits, the other is unaffected
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Mutualism Both species benefit from the interaction
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Interspecific Competition Neither species benefits from the interaction
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Predation One species (predator) directly harms the other (prey)
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Parasitism One species benefits (parasite), the other is harmed (host).
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Type of Interaction Effect on Species 1 Effect on Species 2 Neutral relationship 00 Commensalism +0 Mutualism ++ Interspecific Competition -- Predation +- Parasitism +- Table of Interactions
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