Introduction
After convincing the Minister of Tourism about the benefits of reefs to your island, and collecting so many signatures, you must examine the numerous threats faced by the reef.
Task
Identify the numerous natural and man made threats to the reef.
Process
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Task One (10 minutes)
Click on the following links to gather information to fill in the table below. Use short phrases only
http://www.wri.org/publication/reefs-risk-caribbean
http://wwf.panda.org/about_our_earth/blue_planet/coasts/coral_reefs/coral_threats/
http://science.jrank.org/pages/1794/Coral-Coral-Reef-Natural-threats-coral-reefs.html
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NATURAL THREATS |
THREATS DUE TO HUMAN ACTIVITIES |
NATURAL THREATS WHICH ARE ACCELERATED BY HUMAN ACTIVITIES |
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Task two (10 minutes)
Click on the following link http://oceanservice.noaa.gov/facts/coralreef-climate.html
View the infographic then,
Scroll down and Read the section headed “Climate change dramatically affects coral reef ecosystems”
Climate change greatly impacts on coral reefs in several ways. Complete the table below.
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Effect of climate change |
Impact on reef |
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1. Warming Ocean |
Causes heat stress that leads to coral bleaching |
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2. |
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3. |
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__________________________________________________________________________________
Task 3 (10 minutes)
Log into the Edpuzzle classroom
Click on the video titled “Coral bleaching in the Caribbean”
Answer the following questions based on the video
1. What is major cause of coral bleaching? _______________________________________________
2. By what percentage has coral declined in the Caribbean? ___________________
3. What organism gives the coral its colour? __________________________
4. How is this colour lost? ___________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________
5. What happens if corals remain bleached for too long?____________________________________
6. When did the most severe bleaching event happen in the Caribbean? _______________________
7. What triggered this event? __________________________________________________________
8. Click on the following link http://oceanservice.noaa.gov/facts/coral_bleach.html List other factors that can cause coral bleaching.
A.__________________________ B.__________________________ C._____________________
Stay logged in to Edpuzzle for Task 4
Task 4 (5 minutes)
Click on the assignment titled “Ocean acidification”.
Answer the questions along the video.
_____________________________________________________________________________________
Task 5 (5 mins)
While fishing is an important source of food and income for millions of people. Overfishing and poor fishing practices are some of the greatest threats to the coral reef ecosystem.
Click on the follow link http://oceanservice.noaa.gov/facts/coral-overfishing.html
Read the section “Threats to coral reefs: Overfishing”
List three poor fishing practices
a. _______________________________________
b._______________________________________
c._______________________________________
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Task 6 (5mins)
Pollution from land based human activities eventually makes it way to the ocean and adds to the reef destruction
Click on the following link http://www.reefresilience.org/coral-reefs/stressors/local-stressors/coastal-development/
Read the section titled “Coastal development”, including the captions in the photographs
Complete the table by writing one sentence to explain the impact of the activity on the reef.
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Land based activity |
Impact on the reef |
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1. Land clearing |
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2. Nutrient Polllution |
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3. Sewage |
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Click on the following link http://www.ausarabexplore.info/interactives/coral/coral.html
Play the game and record your score here
Evaluation
At the end of the lesson, please submit your WebQuest worksheet for grading.
Your group's worksheet will be graded based on the following rubric:
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CRITERIA |
EXCELLENT (4-5 MARKS) |
GOOD (2-3 MARKS) |
POOR (0-1 MARKS) |
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COMPLETION |
All activities of each task in the WebQuest are completed |
One or two activities in the WebQuest are omitted or incomplete |
More than 3 activities in the WebQuest are omitted or incomplete |
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ACCURACY OF INFORMATION |
All points of information are accurate |
There are one or two incorrect points of information |
There are more than 3 incorrect points of information |
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PARTICIPATION |
All group members were observed participating in all of the tasks and activities. |
Two to three group members were observed participating in tasks and activities. |
One group member was observed participating in/directing the tasks and activities.
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Conclusion
In your previous lesson, you have established the economic and environmental importance of healthy
coral reefs. Now that you know which threats face the reefs, get ready to take action in your next
adventure.