Ecosytem Interactions
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Transcript of Ecosytem Interactions
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Ecosytem Interactions
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CompetitionPredationSymbiosis
Biotic Interactions
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CompetitionThe interaction
between two or more organisms for the same resource in a given habitat.
Ex. Male mountain goats who compete to mate.
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CompetitionFor similar species
to coexist in an area, they must have slightly different niches
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Predation Occurs when one
organism eats another organism to obtain food.
Many animals use camouflage to avoid predators.
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Predation Some species use
mimicry to avoid predators.
Ex. The viceroy butterfly looks like the monarch. Both taste foul and they have a greater change of not being eaten because their predators avoid them.
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SymbioisisClose interaction
between two different species
Three typesMutualismCommensalismParasitism
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MutualismBoth species benefit
fro the partnershipEx. Leaf cutter ant
and the fungus
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CommensalismOne species benefits
fron a relationship with another species without harm or benefit to the other .
Ex. Bird building a nest in a tree
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ParasitismWhen species
benefits at the expense of another species.
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Charcteristics of PopulationsEventually the
number of births and deaths in a population balance out.
The carrying capacity is the maximum number of individuals of a population that an ecosystem has resources to support.
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Factors that affect Populations in Ecosystems A limiting factor is an
environmental factor that prevents an increase in the number of organisms in a population.
Abiotic: water, sunlight, fires, logging, droughts
Biotic: predators, competition for resources, disease
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Videoshttp://
www.youtube.com/watch?v=D1aRSeT-mQE
http://www.youtube.com/watch?v=zSmL2F1t81Q&feature=fvwrelhttp://www.youtube.com/watch?v=KrWk2g-IMkE&feature=related