Source | Variable | Abbreviation | Unit |
---|---|---|---|
GIS based | Altitude | “alt” | m above sea level |
100 m Radius | Forest age | “age” | years |
Fagus sylvatica density | “fag” | % | |
Conifer density | “conifers” | % | |
Slope | ”slope” | degrees | |
Small scale | Canopy closure | “can” | 25%, 50%, 75%, 100% |
30 m Radius | Girth of nest-box tree at breast height | “girth” | cm |