Download How Species Interact with Each Other

How Species Interact with
Each Other
Chapter 8; Section 2
Niche
• Role (job) of a specie within an
ecosystem.
• A specie’s environment and all of its
interactions with other organisms.
Symbiosis
• There are 5 major types.
• Symbiosis is when two species interact
with each other.
1. Competition
• Different individuals or populations try to
use the same resource (niche).
• Different species = overlapping niche
• Can be Indirect Competition
Niche Restrictions –Each specie uses less
space than it can
2. Predation
• Predator – feeds on another animal
• Prey – animal that is eaten
• Can lead to adaptation
– Mimicry
– Porcupine quills
– camouflage
3. Parasitism
• Parasite lives in or on another organism
AND feeds on it.
• Host is weakened
• Ticks, fleas, tapeworms
4. Mutualism
• Each specie provides a benefit to the other
• Bacteria in your intestines
• Lichen (algae & fungi)
5. Commensalism
• One specie is benefited and other is
neither harmed nor helped
• Birds nesting in a tree
• Orchids growing on a tree
Symbiosis & Coevolution
• Coevolution occurs when two species live
closely together (symbiosis) and evolve
because of their interactions with each
other.
• Flowers and their pollinators
• Cheetah and Gazelle
Make a chart
Interaction
Competition
Predation
Parasitism
Mutualism
Commensalism
Specie A
Specie B
Does it benefit or is
it harmed?
Does it benefit or
is it harmed?
Example