Wednesday, October 17, 2012

Ecosystems, Populations and Communities

Competition: is how organisms react to one another when they are trying to use the same resources. There are three different types of competition.Intraspecific which is between the same species. Interspecific which is between different species. Last, there is direct competition where one organism is declared the winner.
An example of competition would be two male deer competing against one another for the same mate.
 
 
Predation: There is a predator, the hunter, and the prey, the organism that is being hunted. Predation helps to prevent over population. An example of predation would be sharks hunting and feeding on seals.
 
http://team71.wikispaces.com/file/view/shark191106_468x397.jpg/52773934/317x238/shark191106_468x397.jpg


Herbivory: Organisms that feed on plants,which are primary consumers meaning they producer their own food.
 An example of herbivory is this daintree caterpillar feeding on some leaves attached to a tree.

http://www.vuw.ac.nz/staff/angela_moles/daintreecaterpillar.JPG

Mutualism: The relationship between organisms where both organisms are helped or benefit from it. An example of mutualism is monkeys because the monkey eats the small bugs and organisms it finds in the other monkeys fur. Also, the monkey being picked over is clean.
 
 
 
 
Parasitism: The relationship between organisms where only one organism benefits at the other organisms expense. An example of parasitism would be the tiny organisms living off of this caterpillar.
http://www.cals.ncsu.edu/course/ent525/close/parasitism.jpg

Commensalism: The relationship between organisms where only one organism benefits and the other isn't bothered. An example of commensalism would be this porcelain crab that lives in soft coral. The crab is provided with shelter and the coral is not hurt in any way.
http://nadlembehresort.files.wordpress.com/2012/09/mg_5901.jpg





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