What are ocean food chains (Primary) - Lesson Five
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Lesduur is: 45 minIntroductie
Lesson 5 – How do species work together?
This lesson covers the final component ‘decomposers’ and how species work together to support an ecosystem.
Learning activities:
Research and draw either a whale pump or trophic cascade
Explain the meaning of decomposers and ecosystem.
Instructies
Time: 45 minutes
Contact: education@seashepherdglobal.org
© Sea Shepherd 2022
Onderdelen in deze les
Slide 1 - Tekstslide
This lesson is provided by Sea Shepherd. Sea Shepherd was founded in 1977 and is a marine conservation organisation working to protect the oceans and marine wildlife. Sea Shepherd works globally on a range of issues impacting the oceans, running numerous direct action campaigns each year.
Slide 2 - Tekstslide
During the lesson we will use these icons to identify the learning actions.
Slide 3 - Tekstslide
We have discussed - Producers – consumers - predators Each one in this chain provides energy for the next level.
Slide 4 - Tekstslide
We previously discussed how producers use energy from the sun and nutrients to create their food.
Ask students: “How do you think apex species help create the energy needed by producers?”
Ask students: “How do you think apex species help create the energy needed by producers?”
Slide 5 - Tekstslide
One example is how whale poo adds nutrients to the ocean, including nitrogen and iron.
Phytoplankton, are tiny little organisms that live in the ocean, they are so small you can’t see them with the naked eye, but they are very important to our air supply. Phytoplankton are dependent on nutrients and nitrogen in the ocean which they receive from things like whale poo.
Phytoplankton, are tiny little organisms that live in the ocean, they are so small you can’t see them with the naked eye, but they are very important to our air supply. Phytoplankton are dependent on nutrients and nitrogen in the ocean which they receive from things like whale poo.
Slide 6 - Tekstslide
Whales need phytoplankton as food, as do other creatures like krill, which are another food source for whales. So whales need phytoplankton populations to grow for food and phytoplankton need the nutrients from whales.
Slide 7 - Tekstslide
There is another member of a food chain, that sits to the side. They are called decomposers. They feed on dead materials, both plant and animal. They are like the cleaners of the ocean.
These include crustaceans, bacteria, molluscs, fungi, sea cucumbers, starfish and sea urchins.
These include crustaceans, bacteria, molluscs, fungi, sea cucumbers, starfish and sea urchins.
Slide 8 - Tekstslide
Healthy ecosystems need to be in balance. What would happen if we reduced the number of whales in this ecosystem?
Slide 9 - Video
This is a fun video of whale calf playing with dolphins.
https://www.youtube.com/watch?v=ETvZI1hjVVE
https://www.youtube.com/watch?v=ETvZI1hjVVE
Slide 10 - Tekstslide
Deze slide heeft geen instructies
Slide 11 - Tekstslide
Refer Teachers Guide for Learning Activities.
