Many cacti and
succulents grow in high plain and
quite a few come from high altitude or almost alpine
environments. Various altitude
growing succulents are difficult or impossible to acclimatize in warm
plain habitat or in subtropical
marine environment (and in heated greenhouses too), but many of them can
live more or less well in temperate climate. As one moves from low
elevation to high altitude the environment changes from tropical (or
perhaps temperate depending on which mountain you consider) to arctic.
The gradient of latitude that alters the temperature and season length
variables is mirrored in altitude. So the same gradient of
organisms that exists from equator
to poles is expected to be reflected from base to mountain top.
at high altitude
include montane, subalpine, and alpine; the montane one are
generally defined as being in areas above 1,000 m.
The change of altitude lead to a vast variety of physical and chemical