Spatial parameters - rainfall, soil pH
    Physical paramaters - soil type, altitude (incident angle of light, UV, day length)
    Climatic parameters - temperature, cloudiness
 

Climatic ranges for Agenium leptocladum.

Mean Annual Temperature
Mean Annual Rainfall
January Rainfall
January Cloudiness
June Cloudiness
March Mean Temperature
July Mean Temperature

Composite of all of the above.

Predicted range of A. leptocladum in the world
 

Temporal parameters - dispersal time and distance scales (chestnuts), migratory animals (parts of the range are temporally distributed), life stages with different niches (Saguaros).  Habitat plates (Opuntia).

Interactive parameters - competition (carnivores), parasitism (exotics)

Complex parameters - specific combinations and CliMap vectors etc. (Pinus taeda soil moisture+temperature).

Hengeveld (1990) suggested a number of very seemingly esoteric climatic changes that may effect biological ranges (e.g. speed of diurnal warming) but provided no objective means for assessing their importance.  Woodward (1987) discussed many of the mechanisms for these effects and models for testing them.  In the example above we could provide an index of diurnal warming by integrating our data on albedo, cloudiness, temperature and temperature standard deviation to correlate with the ranges of our taxa.