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Noooooooooo Opener : Wed., 9/14 Write the question AND your answer!

Noooooooooo Opener : Wed., 9/14 Write the question AND your answer! Make at least 5 observations. Make at least 1 inference— what do you THINK is going on here?. Today- Homework check 16.4 Get out Ch 16 Notes...16.3!. 16.3 Water Quality

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Noooooooooo Opener : Wed., 9/14 Write the question AND your answer!

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  1. Noooooooooo Opener: Wed., 9/14 Write the question AND your answer! Make at least 5 observations. Make at least 1 inference— what do you THINK is going on here?

  2. Today- Homework check 16.4 Get out Ch 16 Notes...16.3!

  3. 16.3 Water Quality KEY CONCEPT Pollution of Earth’s freshwater supply threatens habitat and health.

  4. Indicator species (bioindicator) Species that provides a sign of ecosystem health! Examples: -amphibians -top predators -fish

  5. So... If the population of an indicator species is stable or increasing, what can you say about the conditions of the ecosystem???

  6. Water pollution affects ecosystems Pollution can put entire freshwater ecosystems at risk.

  7. Biomagnification = accumulation of toxins in the food chain • Some pollutants move UP food chain • predators eat contaminated prey • Poln. increases at each trophic level • Most affected = top consumers

  8. Are humans affected? • What foods should we avoid?

  9. DDT • 1960s • Bald Eagles, Osprey, Brown Pelicans almost EXTINCT! • DDT biomagnifies, they’re top predators… • thinned the egg shells… 

  10. Hmmmm... • What group is the biggest water polluter in the US? • Industry!! • What is the single largest source of water pollution in the US?? • Run-off of silt, pesticides and fertilizers!!!

  11. And... • Why would tertiary consumers have higher concentrations of toxins than primary consumers? • How does the biomagnification pyramid compare with the energy pyramid? • How are carrying capacity and indicator species related? ... • If population of indicator species far below c.c., toxin present?

  12. Pair-Share!

  13. Homework?

  14. LEAD GAME • Alternative Website: ARKive, IUCN, Oil Spill

  15. 16.4 Threats to Biodiversity KEY CONCEPT The IMPACT of a growing HUMAN population threatens biodiversity.

  16. Preserving biodiversity is important to the future of the biosphere!!! For REAL!! • The loss of biodiversity has long-term effects: • loss of medical and technological advances • extinction of species • loss of ecosystem stability

  17. Loss of habitat eliminates species • Habitat fragmentation • prevents organism from accessing its entire home range • barrier forms w/in habitat • urban development

  18. corridors can be road overpasses or underpasses • allow species to move between different areas of habitat Habitat corridors are a SOLUTION to the problem!

  19. Introduced species can disrupt stable relationships in an ecosystem. • Brought to an ecosystem by humans!! • accidental • purposeful • “Invasive” species:environmental& economicimpacts Only in SC since 2002 Only in SC since 1994

  20. SOME EXAMPLES

  21. Burmese python • FL (Everglades) • Released from owners, breeding population now present!!! Invasive species often push out native species

  22. 2. mice (Australia) • Stowaway mice from Europe in late 1700’s • 1993-1994 crops, $65 million in lost revenue! Economic impacts

  23. 3. Kudzu (SE U.S.) • Introduced as ornamental and to prevent erosion • Can grow up to 60’ per growing season • Chokes out other plants!!! Plants can be invaders also!!!

  24. Why is biodiversity important to us??? • Food, medicine, economic • What type of damage can invasive species cause?? Hmmmmm...

  25. High Five Board!

  26. 20 minute videoMake a Chart:Extraction Production Distributionother side of paper:Consumption Disposal Another Way www.storyofstuff.org

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