1. Year 10 – Unit 5: OCEANS ON THE EDGE
Investigating the global pattern  coral reefs or how this has changed in the past 50 years.
Explain the global threats to this marine ecosystem.
Text book

2. In pairs, write a list of all the things you associate with…
STARTER
In pairs, write a list of all the things you associate with…
oceans

3. LESSON 1+2 Lesson Objectives:
map the location of the world’s coral reefs
accurately describe their location, using exam technique
know the values of a coral reef (what they provide)
to be able to recall facts about the Great Barrier Reef

4. Types of ocean environments
Deep Ocean
Continental Shelf
Barrier Reef
Estuaries
Mangroves
Salt Marsh

5. FOCUS: Coral Reefs Why are coral reefs found near the surface?
How many different species are found in coral reefs?
Why are coral reefs described as the “Rainforests of the ocean”?

6. Don’t forget to give your map a Title Key and Labels
Blank map
Don’t forget to give your map a Title Key and Labels

7. Don’t forget to give your map a title Key and labels
Using the map below, shade the areas of the world, on your blank map, where you find coral reefs. Add tropics and equator
Don’t forget to give your map a title Key and labels

8. Answering exam questions
Study your map showing the location of coral reefs. Identify the main areas where coral reefs occur. (3 marks)
Explain why coral reefs are found in one of the areas you identified (2 marks)
Identify 10 ways that humans use coral reef and the risks this may cause to the ecosystem
Suggest how the distribution of reef ecosystems may change over the next century

9. TYPES OF OCEAN ENVIRONMENT. Biodiversity, value and threat level
Deep Ocean
Continental Shelf
Barrier Reef
Estuaries
Mangroves
Salt Marsh

10. Bio-diversity levels
Rainforest of the Ocean? The Great Barrier Reef

11. RESEARCH: Great Barrier Reef
The reef is located in the Coral Sea, off the coast of Queensland in northeast Australia.
The Great Barrier Reef is the world's largest reef system composed of over 2,900 individual reefs and 900 islands stretching for over 2,600 kilometres over an area of approximately 344,400 square kilometres
This reef supports a wide diversity of life, and was selected as a World Heritage Site in 1981.
The Great Barrier Reef is a nesting ground for endangered species like green and loggerhead turtles and a breeding ground for humpback whales.
Over 1500 species of fish live on the Great Barrier Reef, representing 10% of world fish species.
The Great Barrier Reef supports a diversity of life, including many vulnerable or endangered species, some of which may be endemic to the reef system.

12. The value of coral reefs
Tourism
Magnet for world’s tourists
Countries in the Caribbean get over half their income from reef tourism
Exploitation for fishing
4000 species of fish provide food
25% of world’s commercial fish catch comes from coral reefs
The value of coral reefs
Shoreline protection
Provide protection from storms, tsunami and wave erosion.
Can grow with rising sea levels, protect against climate change
Education and research
Learn about marine life
Other uses
Medicine source
To make decorative objects such as jewellery
A source of lime for cement and building
Aquarium trade
Supply tropical fish, sea horses and plants for our fish tanks!

13. WHAT ARE THE MAJOR THREATS TO CORAL REEFS AND WHICH ARE MOST SEVERE?
Active teach interactive

14. What would happen if the world’s coral reefs disappeared?
To understand, we need to investigate physical processes within marine environments…FOOD WEBS and NUTRIENT CYCLING

15. Define these common features of marine ecosystems with examples….
What are the features of a marine ecosystem?
Watch the following video and add to your definitions for the following living parts of an ecosystem:
producers
consumers
predator
prey
decomposers
Carnivore
Herbivore
Omnivore
Define these common features of marine ecosystems with examples….

18. Food web and Nutrient Cycling?

19. L2: GLOBAL THREATS TO OCEAN ENVIRONMTNES?
Go through book pgs
What are the key threats?
How are they damaging these environments? Are they threatening their existence?
Deep Ocean
Continental Shelf
Coral Reef
Estuaries
Mangroves
Salt Marsh

20. THREAT 1: Overfishing
Describe + Explain

21. Describe + Explain
Explain why this is a problem

22. Aqua-culture

23. Explain why this is a problem

24. Eutrophication

26. Eutrophication : Marine dead zones

27. Plastics and Pollution
Plastic islands 1

28. Tourism Impacts

29. Oil Extraction

31. Climate Change - Bleaching

32. Higher Sea Levels Warmer Water Acidity and Bleaching
CLIMATE CHANGE : Other effects of climate change on oceans?
Warmer Water
Acidity and Bleaching
Complete notes from pg 109

33. GLOBAL THREATS TO OCEAN ENVIRONMENTS?
Farming
Overfishing + trawling
Agriculture
Eutrophication
Aqua Culture
Pollution – Plastics, Oil,
Climate change
Deep Ocean
Continental Shelf
Coral Reef
Estuaries
Mangroves
Salt Marsh

34. How are ocean food web and nutrient cycling affected by threats?

35. AFL Check Learning