- What is the globally common, best climatic correlate with treeline
position?
seasonal mean temperature
- List at least 3 examples of factors which can locally
overrun the global treeline determinant.
e.g.: land use, avalanches, instability of
soils, drought, land slides, herbivores, fire
- Imagine a bright midsummer day. Which experiences warmer climate?
A tree at the treeline or alpine grassland 200 m above the treeline?
alpine grassland
- Do you think treelines would be found at higher elevations than they
are if leaf photosynthesis were more intensive?
No.
- Can you imagine experimental ways of testing the current theory of
treeline formation as presented here?
- warming the soil and/or the canopy
- CO2-enrichment experiments (C-source increase)
- leaf pruning experiments (C-source reduction)
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