Energy in Ecosystems

Against the clock! Using the cards at your table produce as many different food chains as you can in 3mins!

Make a note of one of your food chains on the next page.

Now try a food web...

Match the words to organisms in your food web.. Predator Primary Consumer Producer Omnivore Herbivore Secondary Consumer Carnivore Prey

Now try.... The Ecosystems wordbank and questions on page 17 of Torrance.

Watch this clip... Can you see a food chain? http://www.bbc.co.uk/programmes/p017kcc4 Can you see a food chain?

Food Webs

What will happen if the barnacles are removed?

What will happen if the barnacles are removed? There will be fewer Blenny There will be more zooplankton

What will happen if the dog whelks are removed? Why?

What will happen if the dog whelks are removed? There will be fewer Crabs As they will have less food

What will happen if the dog whelks are removed? There will be more limpets and mussels As they will not be eaten by dog whelks

What will happen if the dog whelks are removed? There will be fewer Periwinkles As the crabs will have to eat more of them

Choose another organism, and explain the consequences of it was removed

Monster Crab Invasion!

Re-introduction of Beavers Recently, beavers have been re-introduced to Scotland. Your task is to investigate how this re introduction will affect the ecosystem as a whole.

2.3 Success Criteria Relate the issue to the Key Area (Plant and Animal Interdependance) Describe the biological issue. Describe the effect of this issue on the ecosystem.

What do organisms compete for in their environments? Animals Plants WFS WLN

Plants compete for water, light and soil nutrients

Animals compete for water, food and shelter

Competition Investigation What factors might affect how well seeds germinate?