Communities

" Now you see me - Now you don't "

Symbiosis - Where 2 individuals of different species form a relationship.

          Mutualism     (+ +) - This is where both partners benefit.

          Parasitism     (+ -) - This is where one partner benefits at the other's expense.

                    Ectoparasite - Live on the outside of the host

                    Endoparasite - Live inside the host

          Commensalism     (+ o) - This is where one partner benefits and the other gets no benefit or harm

Habitat - Where the organism can be found - its place of residence.

Niche - The role of the organism in the community.

Competition     (- -) - This is where 2 species compete for a resource.

          Competitive exclusion principle - Says that no 2 species can occupy the same niche at the same time.

Predation     (+ -) - One species eats another species.

          Herbivory - Eating plants.

Cryptic coloration - The animal blends in with the background and is difficult to see.

Flashing coloration - This is a very obvious coloration that distracts or confuses a predator.

Warning coloration - Bright colors that sends the message that "you don't want to eat me" because I will make you very sick.

          Batesian mimicry - This is where a nonpoisonous species mimics a colorful poisonous species to gain a benefit.

          Mullerian mimicry - When 2 or more toxic species mimic each other to gain benifit.

Biodiversity - Is a measure of the number of different species in a given area.

          More diverse kinds of niches - Size - Large diverse niches can hold a greater number of species.

          Tropical latitude - The closer you are to the equator the more species you find.

































Return to Greg Sievert's GB 100 Syllabus
Last updated on 4 January 2018