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AP Environmental Science Mr. Grant Lesson 76

AP Environmental Science Mr. Grant Lesson 76. Marine and Coastal Ecosystems & Marine Pollution. Objectives:. Define the term by-catch . Describe major types of marine ecosystems. Assess impacts from marine pollution. Define the term by-catch . By-Catch :.

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AP Environmental Science Mr. Grant Lesson 76

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  1. AP Environmental Science • Mr. Grant • Lesson 76 Marine and Coastal Ecosystems & Marine Pollution

  2. Objectives: • Define the term by-catch. • Describe major types of marine ecosystems. • Assess impacts from marine pollution.

  3. Define the term by-catch. • By-Catch:

  4. Describe major types of marine ecosystems. • Major types of marine and coastal ecosystems include pelagic and deep-water open ocean systems, kelp forests, coral reefs, intertidal zones, salt marshes, mangrove forests, and estuaries. • Many of these systems are highly productive and rich in biodiversity. Many also suffer from human influence.

  5. Marine and coastal ecosystems

  6. Open ocean systems vary in biodiversity

  7. Animals of the deep ocean

  8. Kelp forests harbor many organisms

  9. Coral reefs are treasure troves of biodiversity

  10. Most corals are colonial

  11. Coral reefs are in worldwide decline

  12. Deepwater coral reefs exist Squat lobsters on a cold-water coral reef off the coast of Ireland

  13. Intertidal zones undergo constant change

  14. A typical intertidal zone

  15. Intertidal zones are a tough place to live

  16. Salt marshes line temperate shorelines

  17. People change and destroy salt marshes

  18. Mangrove forests line coasts Mangroves provide food, medicine, tools, and construction materials

  19. Mangrove forests have been destroyed

  20. Fresh and salt water meet in estuaries

  21. Assess impacts from marine pollution. • People pollute ocean waters with trash, including nets and plastic that harm marine life. • Plastic trash accumulate in ocean regions where it is trapped by currents. • Marine oil pollution results from non-point sources on land as well as from spills at sea from tankers and drilling platforms. • Heavy metal contaminants in seafood affect human health. • Nutrient pollution can lead to dead zones and harmful algal blooms.

  22. Marine pollution In 2008, 391,000 Ocean Conservancy volunteers from 104 nations picked up 3.1 million kg (6.8 million lb) of trash from 27,000 km (17,000 miles) of shoreline

  23. Nets and plastic debris endanger life Trillions of tiny plastic pellets float in the oceans and are eaten

  24. Plastic trash is accumulating in the oceans

  25. Oil pollution comes from spills of all sizes

  26. Oil spills have severe consequences Major oil spills cause severe environmental and economic problems

  27. Oil spills have decreased Recently, oil spills have decreased

  28. Toxic pollutants contaminate seafood

  29. Excess nutrients cause algal blooms

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