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Species Interact In Biological Communities. By: Jennifer and Gabe. Compititon Between Species. interspecific competition: the competiton between species for food and other resources. 

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compititon between species
Compititon Between Species
  • interspecific competition: the competiton between species for food and other resources. 
  • Compeition Exclusion: one species succeeding over another when the growth of both species is limited by the same resource
  • members of a population compete for a limited amount of resources.
causes and results of inspecific competition

Limited amount of resources

  2.Limited amount of (any food such as grass)


Alot more competition or animals move/migrate.

  2. It puts the organisms out of balance because

the animals that eats grass dies

then the animal that eats the insect that died, dies

Causes and Results of Inspecific Competition
article on interspecific population
Article On Interspecific Population

Rabbits that were put on Austrialia:

  • Ate all of the grass
  • Since they have no natural predator there, they are becoming over populated
  • This also shows interspecific competition


adaptions of predator and prey

Keep competing populations down

Some also havecolors that camoflague them so they can't be seen

Some have acute sense that help them find prey


Use camoflague, warning coloring, and mimicry

Others also retreat into safe locations

Other things (such as plants) have poisonous chemicals

Adaptions of Predator and Prey

What is a Symbiotic relationship?

    A Symbiotic relationship is a close ecological relationship between two or more different species.

types of symbiotic relationship
Types of symbiotic relationship

Symbiotic Relationship Terms:

          -Mutualism:Both species benefit.

          -Commensalism: One species benefits and the other is unaffected.

          -Parasitism: One is benefited and the other is harmed.

            -Competition: Neither species benefits.

            -Neutralism: Both species are unaffected

the clownfish and the anemone show mutualism
The Clownfish and the Anemone show Mutualism

These two speceies have a Mutually Benefical symbiotic relationship.

Clownfish have a protective skin thus they aren't harmed by the anemone.

barnacles living on whales shows commensalism
Barnacles living on whales shows Commensalism 

    -Barnacles are arthropods.  The whale acts as

a rocky surface for the Barnacle to fix itself to.  

     -The Barnacle gains acces to Nutrient-rich

waters.  The whale is not harmed.   


Also called a parasitic relationship; one benefits and the other is harmed. 

A parasite is what harms the host.

        They can be inside or on the surface of the host.

Paracites rely on the host to survuve.

Koi Paracite- Feed on the Japenese Koi Fish.  They attach to the outter layer of skin. 


Meaning two organisims interact but neither are affected.

True neutralism is very rare or nonexistent.  

It's usually found in situations that are remote or unimportant.

The Tarantula and the cactus in deserts is an example.