Download Competition in ecosystems

Competition in ecosystems
Energy in Ecosystems
Relationships in ecosystems
Re-cap
In a previous lesson 3 different relationships
between organisms were studied.
What were the 3 relationships?
Competition, Predation and Parasitism.
What is competition?
Energy in Ecosystems
Today we are looking at two types of competition:
Interspecific and Intraspecific
Success criteria
• Be able to define each one.
• Be able to explain the difference between the two.
Energy in Ecosystems
Competition
When does competition occur?
When organisms require the same or similar
resources
What type of resources do organisms compete for?
Light, water, food, space, reproductive mates
Competition can be either Interspecific or Intraspecific.
Energy in Ecosystems
Interspecific competition
This occurs between
members of different
species in an ecosystem
who require similar
resources.
Examples are red/grey squirrels, brown/rainbow trout
The organisms require similar but not exactly the
same resources.
Energy in Ecosystems
Intraspecific competition
This occurs between
members of the same
species in an ecosystem
who require the same
resources.
Examples are robins in a garden or rabbits in a field.
This often more intense as the same resources are
needed.
Energy in Ecosystems
Competition
Collect your question grid and find someone who
can answer the question.
They must sign your grid.
What is competition?
What is intraspecific
competition?
What is interspecific
competition?
What do plants
compete for?
What do animals
compete for?
Give an example of
each type of
competition
Which type of
competition is most
intense and why?
Another type of
Another type of
relationship between relationship between
organisms?
organisms?
Review with the teacher
Energy in Ecosystems