1. Energy in Ecosystems Competition in ecosystems

2. Energy in Ecosystems Relationships in ecosystems Re-cap In a previous lesson 3 different relationships between organisms were studied. What is competition? Competition, Predation and Parasitism. What were the 3 relationships?

3. 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.

4. Energy in Ecosystems Competition When does competition occur? What type of resources do organisms compete for? When organisms require the same or similar resources Light, water, food, space, reproductive mates Competition can be either Interspecific or Intraspecific.

5. 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.

6. Energy in Ecosystems Intraspecific competition This occurs between members of the same species in an ecosystem who require the same resources. This often more intense as the same resources are needed. Examples are robins in a garden or rabbits in a field.

7. 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 relationship between organisms? Review with the teacher