Ecosystem dynamics in time and space 24. May 2006 Examples: Deserts, Permafrost threshold effect

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Ecosystem dynamics in time and space24. May
2006Examples Deserts, Permafrost threshold
effect

• SS 2006
• Lecture/Seminar

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Major goal for today
Get an idea of how to apply the theoretical
concept of system theory to a real ecosystem
pattern
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Student presentations

• Change in system from steadily changing control
  parameters
• Paloma y Sandra (deserts, dunes) (24. May)
• Bettina (Model building 31. May)

NO CLASS 7. June
A system approach to ecosystem research (14.
June) Katja The mosaic cycle concept, Martin
LAII
Non-linear processes Almuth (21. June)
Self organization (28. June) Michael Z.,
Christina
Open (5. July)

• Philosophical realms (12. July)
• Anne
• Elisabeth

Deep ecology, Gaia hypothesis, Co-evolution
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18 years after disturbance
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geoimages.berkeley.edu/GeoImages
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Ice wedges Pingo dynamics
Graphics from http//arctic.fws.gov/permcycl.htm
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Ice wedges Pingo dynamics
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Ice wedges Pingo dynamics
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Ice wedges Pingo dynamics
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Ice wedges Pingo dynamics
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geoimages.berkeley.edu/GeoImages
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Ice wedges Pingo dynamics
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System view
Natural cycle, system with two attractors
Control parameters Temperature, water
availability
Ordnungsparameters Vegetation mat / Soil heat
flux
Threshold effect Steadily increasing T
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