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Life at the Ocean’s Edge

Life at the Ocean’s Edge

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Life at the Ocean’s Edge

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  1. Life at the Ocean’s Edge Earth’s Waters Chapter 5.2 Pages 156-161

  2. Living ConditionsPage156-157 • What are the 6 physical factors that affect ocean environments? • How do scientists classify marine organisms? • What are the 3 categories of classification for marine organisms? Describe each one.

  3. Living ConditionsPage156-157 • What are the 6 physical factors that affect ocean environments? • Salinity, Water temperature, Light, Dissolved gases, Nutrients, and Wave action • How do scientists classify marine organisms? • According to where they live and how they move

  4. Living ConditionsPage156-157 • What are the 3 categories of classification for marine organisms? Describe each one. • Plankton are tiny algae / animals that float along currents • Nekton can swim freely (fish, squid & marine mammals) • Benthos organisms like crabs and sponges live on the ocean floor

  5. On the RocksPage 158 • What is the Intertidal Zone? • Area including the highest high-tide point on land to the point on the continental shelf exposed by lowest low-tide • Why is it difficult for organisms to survive in this zone? • Organisms must tolerate harsh wave action, changing temperature & salinity, and being exposed to the open air (predators)

  6. Ocean Breathes SaltyPage 160 • What are Estuaries? • Describe brackish water. • Why is a Salt Marsh a suitable environment for many organisms? Give 3 reasons. • Explain why Mangroves are valuable to coastal regions.

  7. Ocean Breathes SaltyPage 160 • What are Estuaries? • Coastal inlets or bays where fresh river water mixes with salty ocean water • Describe brackish water. • Brackish water is partly salty and partly fresh

  8. Ocean Breathes SaltyPage 160 • Why is a Salt Marsh a suitable environment for many organisms? Give 3 reasons. • Salt Marshes provide sediments from fresh water; nutrients from cordgrass; breaks up waves, creating shelter for many organisms

  9. Ocean Breathes SaltyPage 160 • Explain why Mangroves are valuable to coastal regions. • Mangroves can withstand hurricane winds, preventing dramatic change to the coastline each hurricane season