DENSITY DEPENDENT LIMITING FACTORS

COMPETITION

• Lack of resources cause conflicts
• Reduces population due to the competiotion
• Two species cannot live in the same environment
• Ex: two lions will fight for food

PREDATION

• The predator hunts and kills the pray
• Usually a carnivore or omnivore eats an herbivore
• Herbivores eat plants
• Ex: deer eats grass and lions eats deer

PARASITISM

• Parasites do not try to kill the host
• Ectoparasites are mosquitoes and lice
• Endoparasites are worms
• Ex: insect lays eggs on the host and become larva

MUTUALISM

• Both species benefit from each other
• This promotes co-evolution which can be good or bad
• Ex: clownfish protects sea anenome and vise versa

COMMENSALISM

• An organism benefits from another organism
• The other organism is not affected
• Ex: a bird living in a tree