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Marine ecosystems


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  • 1. Marine and Fresh Water
  • 2. Marine Ecosystem
  • 3. Marine Ecosystems
  • 4. Types of Marine Ecosystems  Estuaries  Salt marshes  Rocky shores  Sandy Shores  Coral reef  Mangrove swamp  Barrier islands
  • 5. Estuaries An area in which fresh water from a river mixes with salt water from the ocean; a transition area from the land to the ocean. Other names: bay, sound, lagoon, harbor, or bayou. The Ocean Area where fresh and salt water mix River bringing freshwater to the sea
  • 6. Characteristics of Estuaries  Very nutrient rich ecosystems  leads to high productivity and high biodiversity.  Fast-moving rivers and waves carry nutrient-rich particles.  Sediment settles out in the estuary when the water slows down.  Nutrients accumulates on the bottom (benthic zone).  Great place for plants to grow!
  • 7. Estuary plants Plants must be adapted to salty habitat eelgrass cordgrass glasswort – a succulent
  • 8. Estuary animals Huge variety including… Blue crab, Stone crab, Fiddler crab, Horseshoe crab, Mosquito, Lobster, Flounder, Stripped bass, Crane, Flamingo, Sea gull, Ibis, Manatee, otters, and many more.
  • 9. Salt Marshes  A low area that is subject to regular, but gentle, tides, dominated by grasses.  Salt marshes do not have trees or shrubs Texas salt marsh
  • 10. Mangrov e Swamps Coastal wetlands located in tropical and subtropical zones; characterized by salt-tolerant trees and shrubs, such as mangrove trees
  • 11. Rocky shores Also called rocky intertidal zone – many places to live in this habitat, means high biodiversity Organisms must be adapted to wave action, changing tide levels
  • 12. Rocky Shores At low tides, there are often tide pools left behind where you can see starfish, anemones, crabs, octopus
  • 13. Sandy Shores Sandy shores or beaches are loose deposits of sand, gravel or shells that cover the shoreline in many places. They make up two-thirds of the world’s ice-free coastlines.
  • 14. Barrier Islands A long, narrow, offshore island, usually having beaches and dunes on the seaward side,often with lagoons on the landward side
  • 15. Coral Reefs  Structures in the shallow oceans that are built by animals called corals; serve as a habitat for many diverse organisms  Require two things: warm temperatures and sunlight  Found between 30°N and 30°S of the equator
  • 16. Coral Reefs There are many different kinds of corals: Soft corals Hard corals