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Bio ch 13 section 2 show

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  • 1. 13.2 Biotic and Abiotic Factors KEY CONCEPT Every ecosystem includes both living and nonliving factors. Collect HW: 13.2 Pgs. # 402-404 5 Facts/Page
  • 2. 13.2 Biotic and Abiotic Factors Assessment 13.1 1. What are the five different levels of organization studied by ecologists? 2. Describe the three general methods used by ecologists to study organisms.
  • 3. 13.2 Biotic and Abiotic Factors An ecosystem includes both biotic and abiotic factors. • Biotic factors are living things. – Plants – Animals plants – Fungi – Bacteria – Protists
  • 4. 13.2 Biotic and Abiotic Factors • Abiotic factors are nonliving things. – moisture – temperature – wind sunlight – sunlight – soil moisture
  • 5. 13.2 Biotic and Abiotic Factors Changing one factor in an ecosystem can affect many other factors. • Biodiversity is the assortment, or variety, of living things in an ecosystem. • Rain forests have more biodiversity than other locations in the world, but are threatened by human activities.
  • 6. 13.2 Biotic and Abiotic Factors • A keystone species is a species that has an unusually large effect on its ecosystem. keystone
  • 7. 13.2 Biotic and Abiotic Factors • Keystone species form and maintain a complex web of life. creation of wetland ecosystem increased waterfowl Population keystone species increased fish population nesting sites for birds Beaver Lodge Construction
  • 8. 13.2 Biotic and Abiotic Factors HW: 13.3 Pages # 406-407 5 F/PCW: 13.2 Assessment Quiz next?!!! P. 404 #1-4Study Guide 13.2 Pgs. 135-136No Reader Today 13.2 Pgs. # 225#1-5
  • 9. 13.2 Biotic and Abiotic Factors HW: 13.3 Pages # 406-407 5 F/P1. Biodiversity2. What does it mean when they say L.A. is diverse? Quiz next time!3. What is a keystone species?4. List three examples of how a beaver is a keystone species.5. What is the difference b/w biotic and abiotic?6. Sketch a beach and label a total of 10 abiotic and biotic examples.
  • 10. 13.2 Biotic and Abiotic Factors Quiz is next!