Dear all,
I randomly sampled the vegetation of 46 1x1m quadrats around the slopes of a
grassland common. Within each quadrat I measured:
1. The occurrence and abundance of individual moss species (abundance was
measured on a 10-point scale);
2. The aspect of the quadrat (i.e. east-, west-, north- or south-facing);
3. The inclination of the slope (measured in degrees);
4. The vegetation height (measured in cm).
I want to explore the degree to which (2), (3) and/or (4) can explain
variance in the occurrence and abundance of individual moss species (as
measured by 1). The idea being that these variables will largely influence
the availability of water and sunlight, of which individual mosses are able
to tolerate shortages to varying degrees (and hence show non-random spatial
distribution).
What statistical method shall I employ? Thanks very much in advance for any
help.
All the best,
Des
Des Callaghan
31 Hill Paul
Cheapside
Stroud
Gloucestershire
GL5 3BL
UK
|