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Owls eat their prey whole, and regurgitate what they can’t digest (pellet)

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Presentation on theme: "Owls eat their prey whole, and regurgitate what they can’t digest (pellet)"— Presentation transcript:

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2 Owls eat their prey whole, and regurgitate what they can’t digest (pellet)

3 What do you think would be inside these pellets? Owls eat their prey whole, and regurgitate what they can’t digest (pellet)

4 We can use owl pellets to understand predator-prey relationships What do you think would be inside these pellets? Owls eat their prey whole, and regurgitate what they can’t digest (pellet)

5 Unit 2: Organisms and their environment Area of Study 1 Adaptations of organisms Area of study 2 Dynamic Ecosystems Relationships between organisms Components of ecosystems Flow of energy Population dynamics Change to ecosystems Mutualism & symbiosis Predator-Prey Parasite-Host

6 Learning outcomes: To analyse predator-prey relationships (using owl pellets) To describe the components of an ecosystem  interactions between organisms within a food web (visual organiser - ecological pyramid)

7 Learning outcomes: To analyse predator-prey relationships (using owl pellets) To describe the components of an ecosystem  interactions between organisms within a food web (visual organiser - ecological pyramid )

8 Learning outcomes: To analyse predator-prey relationships (using owl pellets) To describe the components of an ecosystem  interactions between organisms within a food web (visual organiser - ecological pyramid ) Higher order learning task: To evaluate the practical consequences of disrupting a food web (introducation of rabbits in Australia)

9 Owl Pellet Dissection

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13 Unit 2: Organisms and their environment Area of Study 1 Adaptations of organisms Area of study 2 Dynamic Ecosystems Relationships between organisms Components of ecosystems Flow of energy Population dynamics Change to ecosystems Mutualism & symbiosis Predator-Prey Parasite-Host

14 Unit 2: Organisms and their environment Area of Study 1 Adaptations of organisms Area of study 2 Dynamic Ecosystems Relationships between organisms Components of ecosystems Flow of energy Population dynamics Change to ecosystems Trophic levels (Food chains-Food webs)

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17 Food Chain

18 PRODUCER CONSUMERS

19 Food Chain Tertiary Consumer Primary Consumer Secondary Consumer Producer PRODUCER CONSUMERS

20 Food Web Food Chain PRODUCER CONSUMERS

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22 Food Web Food Chain Tertiary Consumer Primary Consumer Secondary Consumer Producer PRODUCER CONSUMERS

23 1926: 10,000,000,000 rabbits 1859: 24 rabbits 1990: 600,000,000 rabbits Why do we need to learn about food webs? A practical application

24 How has the introduction of rabbits affected native Australian flora and fauna?


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