Table 1 Spatial indices describing the structure and composition of landscapes used in the present study
From: Selection of scenarios for landscape-level risk assessment of chemicals: case studies for mammals
Category | Parameter | Abbreviation | Unit |
|---|---|---|---|
Size and density | Total landscape area | Area | m2 |
Total offcrop area | TotalOC | m2 | |
Size of the largest offcrop patch | SizeLarOC | m2 | |
Proportion of total offcrop area per landscape | PropOC | NA [0..1] | |
Shape | Compactness of the largest offcrop area | CompLarOC | NA [0..1] |
Patch distance | Distance index | DI | NA |
Patch distance | Distance index × number of offcrop | DImultOCN | NA |
Patch distance | Distance index × number of offcrop/landscape size | DImultOCNpLS | NA |
Connectivity | Integral index of connectivity (species specific) | IIC | NA [0..1] |
Connectivity | Equivalent connectivity | EC | m2 |
Structure | Shannon index | SI | NA [0..1] |
Structure | Overall resilience index (species specific) | OvResilInd | NA |
Configuration | Border length between crop and offcrop area | BorLenCOC | m |
Configuration | Border length between crop and offcrop area per total offcrop area perimeter | BorLenCOCpOC | m |
Configuration | Border area between crop and offcrop area within 10Â m distance from the border | BorArCOC | m2 |