Water Ecosystems

1
Water Ecosystems

• Chapter B1
• Lesson 4

2
Types of Ecosystems

• Water takes up more than 70 of the Earths
  surface. That means that if you divided the Earth
  into ten equal parts seven of those equal parts
  would be made of water.
• The water on earth is categorized into two
  groups freshwater ecosystems and saltwater
  ecosystems.
  
• Saltwater is water that has a lot of salt in it.
• Freshwater is water that contains very little
  salt.

3
Saltwater Ecosystems

• Oceans seas and some lakes are examples of
  saltwater ecosystems.
  
• The amount of salt in each one is not the same.
• Plants and animals live in the shallow (not deep)
  parts because the suns shines more in these
  areas.
  

4
Ocean Zones

• Oceans are the worlds largest ecosystem.
• Water is deeper is some places than in others and
  the water temperature also changes.
  
• The ocean is divided into three zones. The zones
  are defined by how much sunlight they get.
  
• The deeper the water the colder and darker it
  becomes.
  
• Plants and animals can be found in the areas
  closer to the surface.

5
Ocean Zones (continued)
6
Animals Found in Saltwater Ecosystems
crustaceans
fish
sharks
sponges
penguins
whales
7
Freshwater Ecosystems

• These include rivers streams lakes and ponds.
• Rivers and streams have moving water. The water
  may be moving fast or slow.
  
• Lake are usually larger and deeper than ponds.
• Just like in the oceans plants and animals live
  in the shallow (less deep) parts. The sun shines
  more in the shallow parts.

8
Animals Found in Freshwater Ecosystems
Grebe
Turtle
Trout
Puffer fish
Otter
Pelican
Bullfrog
9
Are these saltwater or freshwater ecosystems
10
Review

• What are two kinds of water ecosystems
• Which zone of the ocean gets the least amount of
  sunlight
  
• Name some freshwater ecosystems Saltwater
  ecosystems
  
• In both types of ecosystems where can the most
  plants and animals be found Why