Data for: Moisture and temperature patterns of canopy humus and forest floor soil of a montane cloud forest, Costa Rica

Accumulations of organic material can be found in the crowns of trees in
tropical wet forests.  We investigated moisture and temperature
patterns of dead organic matter in the canopy and of soil in the upper
horizons of the forest floor over a 42-month period. 
Temperatures of the canopy material and forest floor soil fluctuated
throughout the year (range = 11.5°C to 21.0°C), but remained within an
average 1°C of each other. Both canopy material and forest floor soils
were moist throughout the wet and misty seasons (over 70% water content).
Although canopy organic substrate experienced periods of rapid and severe
dehydration during the dry season (20%-40% water content), forest floor
soils remained at a consistently high water content (60%-70%). 
The more extreme and fluctuating moisture conditions of canopy organic
material may be important in determining the distribution and activity of
epiphytic plants and associated canopy organisms.