OPAL Air Survey. What is air? Air is a mixture of gases Nitrogen 78.09%, Oxygen 20.95%, 1% other.

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Presentation transcript:

OPAL Air Survey

What is air? Air is a mixture of gases Nitrogen 78.09%, Oxygen 20.95%, 1% other

Why is it important?

Life on earth AnimalsPlants Humans

Inhale : Oxygen (O2) Exhale : Carbon dioxide (CO2)

Air pollution Sources : VehiclesFactoriesHousesAerosolsFarming Effects: SmogAcid rainClimate change

Nitrogen pollution Sources: Car fumes, factories, fertilisers Problem: Producing too much nitrogen Effects: Acid rain, harming ecosystems, contributing to global warming

Where do you find the most nitrogen pollution? CountrysideSuburbanCity

Bio-indicators Bio-indicators are living organisms that can be used to monitor the health of an environment or ecosystem. Examples include: Canaries used by coal miners Invertebrates in streams e.g. Mayfly nymph

What is a lichen? I have no leaves I have no roots I have no stem I have a flattened body

Lichens – Two lives in one A lichen is a partnership between a fungus and an alga. The fungus (mycobiont) provides protection and the alga (photobiont) provides food. Reproduce by fragmentation or through soredia

Symbiosis or controlled parasitism? By existing together they can live in places they couldn’t survive on their own.

Where do lichens grow? African desertsAlpine peaksRocky shores Anywhere – even in the most extreme environments HotCold

Lichen biodiversity 18,000 identified worldwide 1,700 in Britain Some lichens are more tolerant to pollution than others I hate nitrogen! I nitrogen! BushyLeafyCrusty

1 2 3 Spot the lichen

Activity 1 – lichens on trees Sample 4 deciduous trees – un shaded Identify the tree species Measure the girth of the tree Identify all indicator lichens on one face of the trunk Look at the twigs of the tree – record lichens Record insects that you see 3124

Tar spot Fungus Rhytisma acerinum Sensitive to pollution Growth is reduced by sulphur dioxide and oxides of nitrogen The more tar spot the less polluted the air Count as 2 spots

Make your results count Website : Results can also be posted in for free! Enjoy the survey!!!!