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Chapter 7: Aquatic Ecosystems

Chapter 7: Aquatic Ecosystems. I CAN: DESCRIBE THE CHARACTERISTICS OF THE TWO TYPES OF AQUATIC ECOSYSTEMS: FRESHWATER & MARINE. Section 1. Freshwater Ecosystems. DECOMPOSE THE STANDARD:.

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Chapter 7: Aquatic Ecosystems

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  1. Chapter 7: Aquatic Ecosystems I CAN: DESCRIBE THE CHARACTERISTICS OF THE TWO TYPES OF AQUATIC ECOSYSTEMS: FRESHWATER & MARINE.

  2. Section 1 Freshwater Ecosystems

  3. DECOMPOSE THE STANDARD: STANDARD: DESCRIBE THE CHARACTERISTICS OF THE TWO TYPES OF AQUATIC ECOSYSTEMS: FRESHWATER & MARINE I CAN: _________________ THE __________________ OF THE TWO TYPES OF _________________ ECOSYSTEMS: _________________ & _______________

  4. A Lake Ecosystem

  5. DEFINITION • Freshwater is water that contains very little salt

  6. Freshwater EcosystemsEXAMPLES • Include: • ponds, lakes, streams, rivers, and wetlands • NON-EXAMPLES: • OCEAN • ESTUARY

  7. Characteristics of Aquatic Ecosystems • Factors such as temperature, sunlight, oxygen, determine where organisms live • Three groups of aquatic organisms include: • Plankton - mostly SMALL organisms that float in water. • Nekton - are all organisms that swim • Benthos - are bottom-dwelling organisms.

  8. Life in a Lake • Littoral zone -shallow zone where light reaches the bottom most organisms live here. • Benthic zone - region near the bottom where decomposers live.

  9. Wetland Facts • Areas of land that are covered with fresh water • The two main types: 1. Marshes - contain non-woody plants 2. Swamps - contain woody plants.

  10. WETLANDS and OUR ENVIRONMENT • They act like filters that absorb and remove pollution • They control flooding by absorbing extra water • Habitat for many different organisms

  11. END OF NOTES.. PLACE IN YOUR NOTEBOOK TO STUDY

  12. Curriculum READING – CHAPTER 7 • FINISH READING AND ANSWERING QUESTIONS… • DUE BY END OF CLASS..

  13. Section 2 Marine Ecosystems

  14. Estuaries • Description/Location is an area where fresh water from rivers mixes with salt water from the ocean. • Plants: plankton…weeds… • Animals : fish, dolphins, oysters ,clams, birds…etc. • Services: • Provides area for fishing • Protection from hurricanes..large storms

  15. Salt Marshes • Description: a type of wetland that is continually flooded • Location: found in both temperate and subartic regions • Plants: grasses, sedges, and other plants that have adapted to continual, periodic flooding • Animals: Supports a community of clams, fish, aquatic birds, crabs, and shrimp. • Services: • absorb pollutants to help protect inland areas.

  16. Mangrove Swamps • Description:are tropical or subtropical marine swamps that contain many mangrove trees. • Location: Some are on the Southwest coast of Florida • Plants: Salt loving Mangrove Trees and shrubs • Animals: Worms, crocodiles, wading birds, pelicans, fish , shrimp, oysters…etc • Services: • Help protect the coastline from erosion and reduce the damage from storms. They also provide a home for about 2,000 animal species.

  17. Coral Reefs • Description: Limestone ridges with various plant and animal life • Location: Found in shallow clear warm ocean water. • Plants: Algae and sea grasses • Animals: jellyfish, crustaceans, sea snakes, sea stars, sea turtles, various fish • Services • Most diverse ecosystems on Earth. • Provide HABITATS for thousands of plants and animals

  18. Oceans • Description: The LARGEST biome of the world..Covers 70 % of our beautiful planet • Location: Atlantic, Pacific, Indian, Artic • Plants: Several types of water plants like phytoplankton . • Animals: Zooplankton (sea’s smallest herbivores), jellyfish, sharks, various fish…whales. Etc.. • Services: • Contains plants that produce more 50% of the OXYGEN we breathe! • Fishing • Beaches

  19. Coastal Wetlands • areas that are covered by salt water for all or part of the time. • Provide habitat and nesting areas for many fish and wildlife.

  20. BARRIER ISLANDS • Often run parallel to shores of beaches • Help protect the main lands from storms and ocean waves

  21. Threats to Marine Ecosystems • Runoff from fertilized fields and industrial waste and sewage being discharged into rivers are major sources of ocean pollution. • Overfishing and certain fishing methods are also destroying some fish populations. Marine mammals can get caught and drown in the nets. • Some ships dump fishing lines or nets into the ocean where they can strangle and kill fish and seals.

  22. Summarize • Label the Pictures…that shows the different Marine ecosystems • A.. IS __________________________________ • B… IS___________________________________ • C… IS___________________________________ • D… IS___________________________________ • E… IS___________________________________ • F… IS ___________________________________

  23. END OF NOTES.. PLACE IN YOUR NOTEBOOK TO STUDY

  24. MARINE ECOSYSTEM WEBQUEST • USE THE LINKS ON THE TEACHER’S WEBSITE TO COMPLETE THIS WEBQUEST.

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