2. Ecological Integrity of Earth The Earth Systems - ecosystem services Those natural processes and systems that sustain life on earth Life support systems

3. Ecological Integrity - Earth ’ s resources <--What?? <--Do you mean.. we could run out ?? Water Air Species Soil Energy Earth Minerals

4. Natural processes and cycles Life on earth is dependent on: –One way flow of energy from the sun –Cycling of nutrients

5. Natural processes and cycles Earth ’ s cycles: –Nutrient cycling includes: Carbon cycle Nitrogen cycle –Photosynthesis –Soil formation How are we dependent on trees and other producers?

6. Natural processes and cycles Earth ’ s cycles: Hydrologic cycle –Ground water –Surface water How long can we consumers survive without water?

7. Natural processes and cycles Earth ’ s atmosphere –Green house Effect - a natural “ heat trap ” –GHGs –Is this GHE “bad”? –Ozone Layer - filters out harmful ultraviolet (u.v.) light

8. Earth ’ s Biodiversity Earth ’ s incredible genetic library - Biosphere Biodiversity includes: –Species diversity –Genetic diversity –Ecological diversity How long will we last in a biologically impoverished world?

9. Earth ’ s Biodiversity Classified/Describes 1.4 million species on Earth Scientists estimate possibly 30 to 50 million species on Earth Greatest diversity in tropical regions

10. Earth ’ s Biodiversity Current extinction rate is 1 to 100 species per day Greatest extinction rate in the history of the Earth

11. Human Systems Earth formed about 4.6 billion years ago Human systems change the Earth forever

12. Human Population Consumption of resources grows Environmental degradation becomes a global problem

13. Human population Human population expands Hunter-gatherer societies to Industrial Revolution

14. Human Population Impacts on resources of highly developed versus less developed countries

15. Earth ’ s carrying capacity Humans as a part of nature.. to apart from nature Movement from rural to urban societies

16. Cultural Change Activity H-G (HUNTER- GATHERERS) AGRICULTURAL REVOLUTION INDUSTRIAL REVOLUTION

17. ENERGY USE EARTH WISDOM ENVIRONMENTAL IMPACT

18. HUNTER-GATHERERS EARTH WISDOM- EXPERT KNOWLEDGE OF NATURAL SURROUNDINGS: KNEW HOW TO GATHER PLANTS AND ANIMALS FOR FOOD, CLOTHING, MEDICINE. ENERGY SOURCES FROM SUN, FIRE, MUSCLE POWER MORE ADVANCED, GREATER IMPACT BUT EXPLOITED TO SURVIVE IMPACT LIMITED, LOCAL

19. AGRICULTURAL SOCIETIES LESS EARTH WISDOM THAN H-G BUT EARLY ONES STILL HAD GOOD KNOWLEDGE OF NATURAL SURROUNDINGS SLASH/BURN, SHIFTING CULTIVATION, SUBSISTENCE METAL PLOW INCREASED E USE, BR & MATERIAL GOODS INCREASE MORE DESTRUCTION OF HABITATS

20. INDUSTRIAL SOCIETIES NOT MUCH EARTH WISDOM SHIFT FROM RENEWABLE TO NON-RENEWABLE (COAL 1ST) MID ~1700’S; HUGE CHANGE-- GREAT ENVIRONMENTAL IMPACT INCREASE E CONSUMPTION FACTORIES, MANY RESOURCE AND ENVIRONMENTAL PROBLEMS