Download 4-11-13 Ecological Relationships Notes

Ecological Relationship Notes

Mutualism (Symbiosis) – Both species benefit
o Ex. Bees and Flowers, Cows and cellulose digesting bacteria, clownfish and sea anemone

Commensalism – One species benefits while the other is neither hurt nor helped
o Ex. Birds and Army ants, sharks and little fish swimming below them,

Predation – One organism feeds on the other
o Ex. Any predator / prey relationship…. Killer whale / sea lion, Humans / cows

Parasitism – One organism feeds off the other, but the other stays alive
o Ex. Ticks, mosquitoes, some bacteria, fungi

Competition – Organisms competing for the same mates, habitat, and / or food
o Intraspecific competition –Competition within a species
 Ex. Male deer fighting for mates
o Interspecific competition – 2 different species competing for food or habitats
 Ex. Scorpions and spiders