Thursday, April 7, 2011

blog 9

Blog 9
Define the different forms of community interaction: competition, commensalism, mutualism, predation, parasitism Give an example and a picture for each





Competition

Interaction that can occur between individuals or species as they attempt to use the same, limited resources, particularly energy, nutrients or space

Bees competes to get honey.Go to fullsize image


Mutualism -beneficial to both species


Actually a two-way exploitation. Food is beneficial to both species.


Go to fullsize image


Predators

Predators kill and eat other organisms

Spiders kill bees to eat.      Go to fullsize image



Parasitism - one organism benefits by feeding on another

Fungus        Go to fullsize image



Commensalism -one benefits but the other is neither helped or harmed

Birds using certain trees as roosting sites or barnacles attaching to the skin of a whale

Go to fullsize image

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