Date post: | 30-Dec-2015 |
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Community Interactions
Competition – occurs when organisms of the same or different species attempt to use an ecological resource in the same place at the same time.
Resources: water, food, light, space.
Community Interactions
Predation – when an organism feeds on another organism (predator prey)
Symbiosis – Any relationship in which two species live closely.
Mutualism Commensalism Parasitism
Mutualism (++)
When both species benefit from the relationship
Example: Many flowers depend on insects to pollinate them. Bugs help flowers reproduce and flowers provide bugs with nectar, pollen, etc.
Commensalism (+0)
One member benefits and the other is neither helped nor harmed.
Example: barnacles attach to a whale’s skin. Barnacles are able to filter feed from water rushing past them but they do nothing, good or bad, for the whale.
Parasitism (+-)
One organism lives on or in another organism and harms it.
Examples: fleas, ticks, tapeworms, zombie snails….
Zombie Snail Video
http://www.youtube.com/watch?v=EWB_COSUXMw&safety_mode=true&persist_safety_mode=1