biotic interactions in an ecosyste m
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Biotic Interactions in an Ecosyste m. Biotic Interactions. Biotic interactions are interactions between the living things in the ecosystem. Examples include: Symbiosis Predation Competition. Symbiosis. - PowerPoint PPT PresentationTRANSCRIPT
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Biotic Interactions in an Ecosystem
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Biotic InteractionsBiotic interactions are interactions between the living things in the ecosystem.Examples include:• Symbiosis
• Predation
• Competition
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SymbiosisSymbiosis is the interaction between members of two different species that live in close association.
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Example of Symbiosis• Mushrooms prevent
tree roots from drying out
• Mushrooms also help trees absorb water and nutrients
• Mushrooms benefit by getting food , in the form of sugar, from trees
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Predation• Predation occurs when one organism
consumes another organism for food. The organ that is consumed is called the prey. The organism that eats the prey is called the predator
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Example of Predation• The river otter is a
predator. It’d prey includes fish, crabs, frogs and turtles.
• The river otter is also prey to other predators such as coyotes
• The relationship between predator and prey can effect the entire ecosystem
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Competition • Competition occurs when two or more
organisms compete for the same resource, such as food, in the same location at the same time.
• Competition takes energy that could be used for other life processes.
• Competition can affect the population size and success of a group of organisms.
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Example of Competition
• Dandelions compete with grass for light, water and nutrients.