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Exploring the Diversity of Aquatic Ecosystems

Discover the intricate ecosystems of freshwater, estuaries, and marine environments, from the sunlit photic zones to the dark aphotic zones. Learn about the importance of rivers, lakes, wetlands, and estuaries in supporting diverse aquatic life forms. Explore the varied zones of marine ecosystems and their significance in the global environment.

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Exploring the Diversity of Aquatic Ecosystems

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  1. Aquatic Ecosystems 4.5

  2. Water depth – - Photic Zone – sunlight gets through; photosynthesis can occur here - Aphotic Zone – dark (no light); no photosynthesis

  3. Freshwater Ecosystems • 3% of Earth’s surface water • 3 categories: - Rivers and Streams - Lakes and Ponds - Freshwater Wetlands (3 types) - freshwater bogs, marshes, and swamps

  4. Estuaries • = wetland where river meets the sea (fresh and salt water) • Support a large amount of biomass • Important area for spawning and nursery of many fish and shellfish

  5. Marine Ecosystems • = ocean • Divided into zones based on depth and distance from shore

  6. 3 zones - intertidal zone (in water at high tide, in air at low tide) - coastal ocean (low tide mark to outer edge of continental shelf) - open ocean (edge of continental shelf out) (90% of world’s ocean area)

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