Higher Geography Pupil Conference Dalkeith HS 26th March 2010 Biosphere Val Vannet  High School of Dundee
SOILS or SAND DUNES The Biosphere question will be on either ……
Everything you need to know for the Biosphere question…….
www.macaulay.ac.uk Four clicks away…….. 1 2 3 4
Preparing for the Biosphere question……
Look at past paper questions…….. <ul><li>Sand dunes </li></ul><ul><li>Soils </li></ul><ul><li>Soils </li></ul><ul><li>Sand...
Repeating  themes   for soils…… Profiles   (3 out of 3) Podsols   (3 out of 3) Brown earths  (2 out of 3) Gleys   (1 out o...
Leaf litter layer A Horizon B Horizon Red iron pan Humus Pale grey layer Red/brown subsoil Gritty and free draining Hard a...
<ul><li>What’s going on? i.e.  processes </li></ul><ul><li>humification </li></ul><ul><li>leaching </li></ul><ul><li>eluvi...
Repeating themes for sand dunes…. Definitions : plant succession climax vegetation  (2 out of 2) Transect/cross section (2...
<ul><li>plant communities at a site evolve over time from  pioneer species  to  climax vegetation </li></ul><ul><li>At eac...
What? Where? Why? What plants? Where are they growing? Why are they growing there?
Sea sandwort Honkenya peploides!
<ul><li>salt tolerant  so survives on the foreshore </li></ul><ul><li>low growing  so avoids strong winds </li></ul><ul><l...
But what’s this got to do with the price of fish?
This soil is 37 years old! This plant is a pioneer!
 
Sea Lyme Grass being used to stabilise tephra on Eldfell
The lava flow almost blocked the harbour of Heimaey  – Iceland’s main fishing port
Eldfell volcano Eyjafjallajokull
Eyjafjallajokull this week A new volcano has appeared on the same fissure line
EYJAFJALLAJOKULL ERUPTION  ICELAND MARCH 2010
http://www.mila.is/um-milu/vefmyndavelar/eyjafjallajokull-fra-thorolfsfelli This morning!
This evening!
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2010 Biosphere or 'What's this got to do with the price of fish?'

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A presentation for the 2010 SAGT Higher Pupil Geography conference

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2010 Biosphere or 'What's this got to do with the price of fish?'

  1. 1. Higher Geography Pupil Conference Dalkeith HS 26th March 2010 Biosphere Val Vannet High School of Dundee
  2. 2. SOILS or SAND DUNES The Biosphere question will be on either ……
  3. 3. Everything you need to know for the Biosphere question…….
  4. 4. www.macaulay.ac.uk Four clicks away…….. 1 2 3 4
  5. 5. Preparing for the Biosphere question……
  6. 6. Look at past paper questions…….. <ul><li>Sand dunes </li></ul><ul><li>Soils </li></ul><ul><li>Soils </li></ul><ul><li>Sand dunes </li></ul><ul><li>Soils </li></ul>But don’t try to question spot!
  7. 7. Repeating themes for soils…… Profiles (3 out of 3) Podsols (3 out of 3) Brown earths (2 out of 3) Gleys (1 out of 3) Horizons, colour, texture, drainage (3 out of 3) Formation factors/processes (3 out of 3)
  8. 8. Leaf litter layer A Horizon B Horizon Red iron pan Humus Pale grey layer Red/brown subsoil Gritty and free draining Hard and may impede drainage Sandy
  9. 9. <ul><li>What’s going on? i.e. processes </li></ul><ul><li>humification </li></ul><ul><li>leaching </li></ul><ul><li>eluviation and illuvation </li></ul><ul><li>podsolisation </li></ul><ul><li>Why’s it going on? i.e. factors </li></ul><ul><li>relief </li></ul><ul><li>climate </li></ul><ul><li>vegetation </li></ul><ul><li>humus </li></ul><ul><li>soil biota </li></ul>
  10. 10. Repeating themes for sand dunes…. Definitions : plant succession climax vegetation (2 out of 2) Transect/cross section (2 out of 2) Named plants at locations on transect (2 out of 2) Influencing factors : why are they there? (2 out of 2)
  11. 11. <ul><li>plant communities at a site evolve over time from pioneer species to climax vegetation </li></ul><ul><li>At each stage of the succession the plant community alters the soil and microclimate allowing the establishment of another group of species </li></ul><ul><li>One community of plants is therefore replaced by another as the succession develops </li></ul><ul><li>Eventually a climax community is reached where the vegetation is in a state of equilibrium with the environment and there is no further influx of new species </li></ul>Plant succession and climax vegetation
  12. 12. What? Where? Why? What plants? Where are they growing? Why are they growing there?
  13. 13. Sea sandwort Honkenya peploides!
  14. 14. <ul><li>salt tolerant so survives on the foreshore </li></ul><ul><li>low growing so avoids strong winds </li></ul><ul><li>fleshy leaves store water </li></ul><ul><li>thick cuticle protects from ‘sandblasting’ </li></ul><ul><li>long tap roots access moisture in sand </li></ul>
  15. 15. But what’s this got to do with the price of fish?
  16. 16. This soil is 37 years old! This plant is a pioneer!
  17. 18. Sea Lyme Grass being used to stabilise tephra on Eldfell
  18. 19. The lava flow almost blocked the harbour of Heimaey – Iceland’s main fishing port
  19. 20. Eldfell volcano Eyjafjallajokull
  20. 21. Eyjafjallajokull this week A new volcano has appeared on the same fissure line
  21. 22. EYJAFJALLAJOKULL ERUPTION ICELAND MARCH 2010
  22. 23. http://www.mila.is/um-milu/vefmyndavelar/eyjafjallajokull-fra-thorolfsfelli This morning!
  23. 24. This evening!

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