1. A World of Water “Living in water”
Unit 5, Topic 5

2. Not all habitats are the same
Diversity
Variety and number of species and organisms in a particular area
The oceans have more that a million species
These are spread through various habitats such as tide pools, coral reefs, deep oceans and shallow tide flats.

3. Lakes and ponds Lakes form in low areas and collect water.
The sun usually reaches all depths of a lake and pond.
This allows aquatic plants to grow
Lake temperatures are usually consisitant

4. Use page 432 to add three further notes to this page on Lakes and ponds

5. Rivers and streams Usually shallow
Contain sediments eroded from the river bed, shores and upstream areas
Usually clear
The moving water of rivers and streams creates special challenges for the organisms
Describe some adaptations of invertebrates or plants in rivers. (P. 433)

6. Caddisfly Larve

7. Give three examples of adaptations in river organisms
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8. Oceans Largest aquatic habitat
Salty, deeper and have much more water movement ie. Currents
The great amount of aquatic life is in the TOP 180 M
This is the average DEPTH that SUNLIGHT can penetrate
Most marine organisms live in shallow water on the CONTINENTAL SHELF

10. Continental shelf

11. Aquatic adaptations
Describe how each example above gets its OXYGEN __________________________________________________________________________________________

12. Adaptations
Give examples how these organism adapt to the ever changing and moving water they live in.

13. Phytoplankton vs Zooplankton
Floating plants
Important source of food for other higher level organisms.
0.002 mm-2mm long
Very important in producing OXYGEN
Floating animal plankton
Usually have very small spines or other appendages which help them move and float.
Often clear

14. Light body
Irregular shape
Long spines
Made of glass like substances called silica
Help to keep the light and buoyant (afloat)

16. Create a Venn diagram of phytoplankton vs. Zoo plankton using p. 435

17. Deadly Box jelly fish

18. More adaptations

19. What other sea products do we use

20. Turbidity
Measures the clearness of a water sample

21. Nutrient pollution Too many nutrients Algae –another aquatic plant
Run off from land fertilizers
Sewage
Algae –another aquatic plant
Algae bloom– is a population explosion of algae.
As these plants die they drop to the bottom and get consumed by bacteria. This bacteria uses up all the OXYGEN in the water. = no O2 left for any other organism

23. Overfishing

24. Watch trailer for “the End of the Line” some disturbing scenes

25. Bioaccumulation in and Aquatic food chain