1. Mr. Clark Bethpage High School
Ecosystems
Mr. Clark
Bethpage High School

2. Ecosystems Basic Ecological principles Ecosystems Matter cycles
Ecosystem studies

3. Ecological Organization
Organisms
Populations
Communities
Ecosystems
Biosphere

4. Earth’s Spheres Atmosphere Hydrosphere Lithosphere Biosphere
Troposphere
Stratosphere
Mesosphere
Thermosphere
Hydrosphere
Lithosphere
Biosphere

5. Biosphere

6. How is Life Sustained on Earth?
Energy flow
Biogeochemical Cycles: recycling of matter
Gravity

7. Flow of Energy to Earth

8. Biomes
Biomes
Role of climate
Aquatic life zones

9. Factors affecting Ecosystems
Abiotic factors
Biotic factors
Limiting factors

10. Factors affecting Ecosystems
Range of tolerance

11. Components of Ecosystems
Abiotic factors
Energy Flow
Biotic Factors
Autotrophs
Heterotrophs
Decomposers
Material Cycles

12. Biodiversity Species biodiversity or biodiversity
Genetic biodiversity within a species
Ecological biodiversity of ecosystems
Functional biodiversity
of biogeochemical cycles or energy flow

13. Energy Flow in Ecosystems
Food chains
Food webs
Trophic Levels

14. Food Chains

15. Food Webs
A food web shows all the feeding relationships in an ecosystem.
Food webs are more accurate illustrations.
Food chains are strands of food webs.

16. Trophic Levels Producer trophic level Primary consumer (herbivore)
Secondary consumer (carnivore)
Tertiary consumer
Omnivores
Detritivores and scavengers
Decomposers

17. Ecological Pyramids Pyramid of energy flow Ecological efficiency
Pyramid of biomass
Pyramid of numbers

18. Primary Productivity Gross primary productivity (GPP)
Net primary productivity (NPP)

19. Soils Origins Importance Maturity and Horizons
Variations with Climate and Biomes
Variations in Texture and Porosity

20. Soil Profiles in Different Biomes

21. Biogeochemical Cycles Matter Recycling in Ecosystems
Hydrologic (Water) cycle
Carbon cycle
Nitrogen cycle
Phosphorus cycle
Sulfur cycle

22. Hydrologic (Water) Cycle

23. The Carbon Cycle (Marine)

24. The Carbon Cycle (Terrestrial)

25. The Nitrogen Cycle

26. The Phosphorus Cycle

27. The Sulfur Cycle

28. How Do Ecologists Learn About Ecosystems?
Field research
Remote sensing
Geographic information systems (GIS)
Laboratory research
Systems analysis

29. Geographic Information System (GIS)

30. Orlando Florida

31. Systems Analysis Computer Modeling