1. Human Impacts on the Environment

2. Part One Ecosystem Services and Human Impacts

3. Ecosystem Services Anything the environment does for humans that helps us survive for free Categories: Supporting Provisioning Regulating Cultural

5. Value of trees

6. What’s different between the two halves of this image?

7. What’s are some environmental consequences of changing the environment?

8. How do humans impact the environment? Hunting and gathering Agriculture Industry Urban development

9. Article Read the article: “Is Human Impact Accelerating Out of Control?” and complete the article review in your notes turn in the article with your notes

10. Human Impacts Part 2 Renewable and Non-renewable resources

11. Resource An environmental good or service Renewable – can be regenerated or renewed through biogeochemical cycling Example: Non-renewable – cannot be regenerated by natural processes in a “usable amount of time” Example:

12. Human interactions with the environment Human activities can affect the quality and supply of renewable resources Land, forests, fisheries, air, fresh water Sustainable development – a way of using natural resources without depleting them and of providing for human needs without causing long term environmental damage

13. Land Resources Provide: Space for human communities Raw materials for industry Soil to grow crops Harmed by: Soil erosion – wearing away of surface by water and wind Desertification – the process by which fertile land becomes a desert Caused by: Overuse of land for farming and grazing Drought

14. Forest Resources Provide: Wood for building, cooking, and industry Ecological services: Produce oxygen Provide habitats for organisms Moderate climate Limit soil erosion Protect freshwater supply Harmed by: Deforestation – loss of forest land Due to over logging Conversion of lands to farming or human communities

15. What has changed between 1975 and 2007?

16. Has Guatemala or Belize protected their forest resources better? How can you tell? GuatemalaGuatemalaBelize

17. Fishing Resources Provide: Food - 15% or more of the protein intake for 4.3 billion people Recreation Tourism income for people around the world Harmed by: Over fishing – harvesting fish faster than they can be replaced by reproduction

18. How has the condition of the worlds fisheries changed from 1950 to 2003?

19. Fishery Resources Sustainable development of fisheries Has guidelines for: Size limits Catch limits Reproduction protections Aquaculture: Raising of aquatic animals for human consumption Help offset demand for fish and protect wild resources Can pollute the environment if not managed properly

20. Air Resources Provides: Oxygen Ozone Layer protects us from UV radiation Clean air is critical for human health Harmed by: Pollutants – a harmful material that can enter the biosphere through land, air, or water Lead to: Smog: a mixture of chemicals that cause grey/brown haze Acid Rain: acidic rain formed when water combines with certain pollutants

21. Freshwater Water is used for: Photosynthesis Agriculture Drinking Washing Industry Maintaining habitat Harmed by: Pollution Overuse Non-sustainable development practices Example: putting lawns in a desert

22. Energy Resources Investigate Energy Resources by completing the packet. Turn the completed packet in with your notes

23. Human Impacts Part 3: Biodiversity

24. Biodiversity Biodiversity is one of Earth’s greatest natural resources Types: Ecosystem – variety of habitats, communities, and ecological processes Species – number of different species in the biosphere Genetic – sum total of all the different forms of genetic information in the biosphere

25. Value of biodiversity Foods Industrial products medicines: Pain killers Antibiotics Heart drugs Antidepressants Anticancer drugs

26. Threats to Biodiversity Human Activities lead to: Extinction Endangered Species Caused by: Habitat alteration Demand for wildlife products Pollution Introduced species

27. Threats to Biodiversity Habitat alteration: changes to the habitat Habitat fragmentation: splitting ecosystems into pieces Demand for wildlife products People value animal products more than the live animals

28. Threats to Biodiversity Pollution Can damage the environment and poison organism Biological magnification – concentrations of harmful substance increase in organisms at higher trophic levels

29. Threats to Biodiversity Introduced Species Compete with native species for resources Invasive species – reproduce rapidly and take over the environment

30. Conserving biodiversity Conservation – term used to describe the wise management of natural resources, including the preservation of natural habitats Focus on protecting entire ecosystems as well as single species

31. Wolves and Conservation Read the articles and answer the questions that accompany them Turn the articles in with your notes

32. Human Impacts Part 4: Future Problems

33. Future Problems Researchers gather data about important earth systems Ozone Layer Global Climate Change

34. Ozone Depletion

35. Global Climate Change Change in the average temperature of the planet Modern climate change is due to human activity

36. Future Problems Read the articles and complete the worksheet Turn in at the end of class