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Environmental Issues and Solutions: Impactful Human Activities

Learn about human impacts on the environment, from invasive species to climate change. Discover causes, impacts, and possible solutions for issues like biomagnification, climate change, ozone thinning, acid rain, and ocean pollution.

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Environmental Issues and Solutions: Impactful Human Activities

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  1. Science Starter #8 – 4/11/17 Identify one similarity and one difference between primary and secondary succession TAKE OUT SUCCESSION COMIC  STAMPED

  2. Notes 11.6 –The Bad:Human Issues and Impacts

  3. Issue: Invasive Species • CAUSE: • Non native species is introduced into an ecosystem

  4. Issue: Invasive Species • IMPACT: • Affect biodiversity of native species • Have no natural predators • Causes food web to go out of balance

  5. Issue: Invasive Species • POSSILE SOLUTIONS: • Clean boats when moving to new location • Clean all camping gear • Do not bring in food from other countries • Limit use of non-native species

  6. ISSUE: Biomagnification • https://www.youtube.com/watch?v=E5P-UoKLxlA

  7. ISSUE: Biomagnification • CAUSE: • Bioaccumulation: pollutant enters the organism and builds up within the individual over time • Biomagnification: concentration of pollutant increases as you move up the food chain

  8. ISSUE: Biomagnification • IMPACT: • Species can eventually go extinct • Infants/unborn babies: affects developing nervous system • Children/adults: affects brain, heart, kidneys, lungs, & immune system

  9. ISSUE: Biomagnification • POSSIBLE SOLUTIONS: • Banning of toxic pollutants (worst ones have already been banned, like DDT) • Regulate or even eliminate processes that create toxins (ex. Burning Coal)

  10. ISSUE: Climate Change

  11. ISSUE: Climate Change • CAUSE: • Greenhouse Effect: the ability to trap heat • keeps our planet warm and habitable • Combustion of fossil fuels releases excess carbon • CO2 and other greenhouse gases trap heat

  12. ISSUE: Climate Change • IMPACT: • Global temperature to rise about 4o C by 2100 • Rise in sea levels • Changes in weather and climate patterns affecting agriculture • Affects amphibian/reptile development

  13. ISSUE: Climate Change • POSSIBLE SOLUTIONS: • Eliminate the burning of fossil fuels • Carpool or use public transportation • Wind Power, Solar Power, Hydropower, other alternative energy sources

  14. ISSUE: Ozone Thinning

  15. ISSUE: Ozone Thinning • CAUSE: • CFC’s from refrigerators, plastic manufacturing break down the ozone • Ozone Hole started in the Southern Hemisphere but increases in size over time

  16. ISSUE: Ozone Thinning • IMPACT: • Increased UV radiation leads to skin cancer because atmosphere blocks UV radiation

  17. ISSUE: Ozone Thinning • POSSIBLE SOLUTIONS: • Ban CFCs and other pollutants

  18. ISSUE: Acid Rain

  19. ISSUE: Acid Rain • CAUSE: • Burning of coal and fossil fuels releases pollutants into the atmosphere • Water vapor condenses around the pollutant particles to form acidic water (acid rain) • Some bodies of water can buffer/resist the effects of acid rain

  20. ISSUE: Acid Rain • IMPACT: • Disease and death of trees, fish, and other organisms • Degradation of stone

  21. ISSUE: Acid Rain • POSSIBLE SOLUTIONS: • Reduce/eliminate use of fossil fuels! • Be sustainable! • Sustainable: able to maintain needs at a reasonable rate • Watch your ecological (carbon) footprint • How much do your actions affect the environment?

  22. ISSUE: Ocean Pollution

  23. ISSUE: Ocean Pollution • CAUSE: • Plastic pollution on land is carried out to sea by wind and rain We're surrounded by plastic. Think about every piece you touch in a single day: grocery bags, food containers, coffee cup lids, drink bottles, straws for juice boxes — the list goes on and on. Plastic may be convenient, but its success carries a steep price. Every single piece of plastic every made still exists today!

  24. ISSUE: Ocean Pollution • IMPACT: • Entanglement: organisms become twisted in or caught in plastics • Ingestion: organisms eat plastics • Rafting Organisms: barnacles, sea anemones, and other “rafters” make their home on plastics.

  25. ISSUE: Ocean Pollution • Possible Solutions • USE LESS PLASTIC!!! • Use biodegradable products • Watch where you throw away/recycle your plastics https://www.youtube.com/watch?v=02WjKxk1veQ

  26. Ecosystem Destruction • Extinction: the death of every member of a species • Habitat destruction: river damming, logging, invasive species • Hunting/harvesting: overfishing, poaching

  27. The Good:ENVIRONMENTAL SOLUTIONS Ch. 22-3 pp 444 - 452

  28. HUMAN RESOURCE USE • Ecological (carbon) footprint: amount of land and sea required to supply the resources to fit your lifestyle needs • Calculate your own: www.carbonfootprint.com • Sustainability: the ability to meet human needs In 2007 humanity’s total ecological footprint was ~1.5 earth’s

  29. Pollution • Release of environmental contaminants • Types: Land, water, air, noise, light

  30. FIELDS OF STUDY • Conservation biology: identify, protect, and maintain natural areas at risk • Restoration biology: rebuild the damaged ecosystems • Use bioindicators (indicator species): species especially sensitive to environmental changes; used as early warning signals of environmental problems

  31. PROTECTING ECOSYSTEMS • Biodiversity Hotspots: regions with the highest diversity that are most in danger

  32. GOVERNMENT LAWS • Debt-for-Nature Swap: richer countries or private companies pay smaller/poorer countries for conservation of undeveloped land or education programs U.S. signs debt-for-nature swap with Indonesia

  33. PRIVATE EFFORTS • Ecotourism: People pay for nature guides, food, and lodging in exchange for opportunity to experience the ecosystem

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