Types of Community Interactions
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Types of Community Interactions
CompetitionPredationSymbiosis
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CompetitionCompetition—interaction in which organisms of the same or different species attempt to use the same ecological resource in the same place at the same time.
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PredationPredation—interaction in which one organism captures and feeds on another organism.
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Symbiotic RelationshipsSymbiosis- two species living
togetherhttp://www.youtube.com/watch?v=zSmL2F1t81Q
3 Types of symbiosis:1. Commensalism2. Parasitism3. Mutualism
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Type of relationship
Species harmed
Species benefits
Species neutral
CommensalismParasitism
Mutualism
= 1 species
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Symbiotic RelationshipsCommensalism-
one species benefits and the other is neither harmed nor helped
Ex. orchids on a treeEpiphytes: A plant, such as a tropical orchid or a bromeliad, that grows on another plant upon which it depends for mechanical support but not for nutrients. Also called xerophyte, air plant.
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Symbiotic RelationshipsCommensalism-
one species benefits and the other is neither harmed nor helped
Ex. polar bears and cyanobacteria
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Commensalism
Whale & Barnacles
Shark & Remora
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Symbiotic RelationshipsParasitism- one species benefits (parasite)
and the other is harmed (host)
• Parasite-Host relationship
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Symbiotic RelationshipsParasitism- parasite-hostEx. lampreys, leeches, fleas,ticks, tapeworm,
Not considered predator-prey because goal is not to KILL host
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Symbiotic RelationshipsMutualism- beneficial to both
species Cleaner Shrimp &
Fish
Bee & Flower
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Mutualism
Egyptian Plover
& Crocodile
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Symbiotic RelationshipsMutualism-
beneficial to both species
LichenFungus
+BluegreenAlgae
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