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Eutrophication

Eutrophication. L.O. 1) Know that this is a problem caused by too much nitrogen! 2) Be able to describe who it causes problems for. Eutrophication. Death of aquatic life caused by increased nitrate levels in water Nitrates can come from two sources - Artificial fertilisers used by farmers

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Eutrophication

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  1. Eutrophication L.O. 1) Know that this is a problem caused by too much nitrogen! 2) Be able to describe who it causes problems for.

  2. Eutrophication • Death of aquatic life caused by increased nitrate levels in water • Nitrates can come from two sources - Artificial fertilisers used by farmers - Nitrates from animal waste ( faeces and urine) or feed ( silage)

  3. Eutrophication • Importance to you: Effect of agriculture on environment Can cause “pollution” – death of fish • An examiners favourite • Usually worth lots of marks • A sequential event – examiners love to get you to put stages in order

  4. Outline of how Eutrophication works

  5. Eutrophication • How farmers get it wrong…. • Too much nitrate fertilizer • Apply nitrate fertilizer just before heavy rain • GIVES FARMERS A BAD IMAGE AS ENVIROMENT SPOILERS

  6. What you need to do! • Either a cartoon stripe detailing all the stages in Eutrophication • OR • A poster warning farmers how Eutrophication occurs and telling them how to prevent it.

  7. Jaws

  8. Jaws • In the stream in Mrs Swinson’s garden a trout called Jaws was washed in in one flood • He lived there for a year growing larger and larger • Just when Mr Swinson was contemplating buying a fishing rod _ early June • The stream went cloudy brown • The next morning Jaws was floating belly up- and all the little fish in the stream too • Why??

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