Introduction To Ecology

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Introduction To Ecology

  1. 1. Introduction to Ecology Energy and Organisms
  2. 2. Agenda: 03/19/09 <ul><li>Notes: Energy in Ecosystems & Food Webs </li></ul><ul><li>Finish Food Webs Coloring Sheet </li></ul><ul><li>Warm-Up </li></ul><ul><li>How do plants get their energy? How do animals get their energy? </li></ul>
  3. 3. Producers and Consumers <ul><li>Type </li></ul><ul><li>Producer </li></ul>Also Called Autotroph <ul><li>Description </li></ul><ul><li>gets energy from nonliving resources (like the sun) </li></ul><ul><li>gets energy from self . </li></ul>self energy
  4. 4. Producers and Consumers <ul><li>Type </li></ul><ul><li>Consumer </li></ul>Also Called Heterotroph <ul><li>Description </li></ul><ul><li>gets energy by eating other organisms </li></ul><ul><li>gets energy from a different source. </li></ul>different energy
  5. 5. Processes by Which Producers Obtain Energy <ul><li>Photosynthesis : </li></ul><ul><li>sunlight is the main source of energy. </li></ul><ul><li>Examples are green plants, cyanobacteria, and some protists. </li></ul><ul><li>Chemosynthesis : </li></ul><ul><li>chemicals are the main source of energy. </li></ul><ul><li>Examples are deep-sea organisms, hydrothermal pools, and marsh flats. </li></ul>Both - make their own energy
  6. 6. Food Chains and Food Webs <ul><li>Types of consumers: </li></ul><ul><li>herbivore : eats only plants </li></ul><ul><li>carnivore : eats only meat </li></ul><ul><li>omnivore : eats both plants and animals </li></ul><ul><li>detritivore : eats dead organic material </li></ul>
  7. 7. A food web shows : the complex network of feeding relationships and flow of energy Trophic Level <ul><li>Producer </li></ul><ul><li>Algae </li></ul><ul><li>Phytoplankton </li></ul>1 2 3 Primary Consumers 3. Zooplankton 4. Shrimp 5. Sea turtle 6. Parrotfish 7 4 5 6 9 8 10 Secondary Consumers 7. Sea sponge 8. Jellyfish 9. Triggerfish Tertiary Consumers 10. Reef shark
  8. 8. A food web shows : the complex network of feeding relationships and flow of energy Trophic Level <ul><li>Producer </li></ul><ul><li>Algae </li></ul><ul><li>Phytoplankton </li></ul>1 2 3 Primary Consumers 3. Zooplankton 4. Shrimp 5. Sea turtle 6. Parrotfish 7 4 5 6 9 8 10 Secondary Consumers 7. Sea sponge 8. Jellyfish 9. Triggerfish Tertiary Consumers 10. Reef shark Energy flows from prey to predator!!! Think of this: prey ---is eaten by---> predator
  9. 9. A food web shows : the complex network of feeding relationships and flow of energy Trophic Level <ul><li>Producer </li></ul><ul><li>Algae </li></ul><ul><li>Phytoplankton </li></ul>1 2 3 Primary Consumers 3. Zooplankton 4. Shrimp 5. Sea turtle 6. Parrotfish 7 4 5 6 9 8 10 Secondary Consumers 7. Sea sponge 8. Jellyfish 9. Triggerfish Tertiary Consumers 10. Reef shark
  10. 10. A food web shows : the complex network of feeding relationships and flow of energy Trophic Level <ul><li>Producer </li></ul><ul><li>Algae </li></ul><ul><li>Phytoplankton </li></ul>1 2 3 Primary Consumers 3. Zooplankton 4. Shrimp 5. Sea turtle 6. Parrotfish 7 4 5 6 9 8 10 Secondary Consumers 7. Sea sponge 8. Jellyfish 9. Triggerfish Tertiary Consumers 10. Reef shark
  11. 11. A food web shows : the complex network of feeding relationships and flow of energy Trophic Level <ul><li>Producer </li></ul><ul><li>Algae </li></ul><ul><li>Phytoplankton </li></ul>1 2 3 Primary Consumers 3. Zooplankton 4. Shrimp 5. Sea turtle 6. Parrotfish 7 4 5 6 9 8 10 Secondary Consumers 7. Sea sponge 8. Jellyfish 9. Triggerfish Tertiary Consumers 10. Reef shark Remember: energy flows from prey to predator!!!

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