- Why is nitrogen not a mineral nutrient?
Because it originates from the atmosphere
- How helpful are bulk soil nutrient analyses into assessing plant nutrient
supply?
Not much, because most of the nutrients are tied
to soil humus and are not accessible to plants
- Is there an explanation for the relatively high nutrient concentration
in alpine plants?
Control over growth avoids dilution, i.e. slower
growth and production of few, but nutrient rich leaves etc.
- What is the major source of annual N incorporation
in alpine plant biomass?
Decomposition/mineralisation
- What is the main consequence of nutrient addition
to alpine plant communities?
Damage in community structure, dominance of fast growing species, fewer
slow growing species
- What does calicole mean?
Likes calcareous (carbonatic/dolomitic) substrate
- Why are slopes commonly richer in nutrients than
flat terrain?
Because of surface dynamics and erosion
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