Quantifying Effects of Spatial Heterogeneity of Farmlands on Bird Species Richness by Means of Similarity Index Pairwise
Table 1
Environmental parameters used to describe the farmlands in Central Italy. The spatial scale of measurement was 100 m radius around a single point count.
Parameters
Abbreviation
Level
Details
Altitude
alt
Landscape
Altitude of the point count (m/a.s.l.)
Terrain slope
slo
Landscape
No slope (less than 3 degrees): 0, slight slope (between 3 and 8 degrees): 1, mean slope (greater than 8 degrees): 2