Table 2. Landcover metrics.
FRAGSTATS landcover metrics [53] for landcover types on private lands in the lesser prairie-chicken Sand Sagebrush Prairie Ecoregion [36] in Kansas, Colorado, and Oklahoma, USA, from 1985–2015.
| a. Prairie | ||||||
| Year | Total Area 1 | Mean Patch Area2 | Percentage of Landscape3 | Total Edge 4 | Number of Patches5 | Clumpiness6,7 |
| 1985 | 1137390.21 | NA | 36.46 | NA | NA | NA |
| 1990 | 1150138.35 | 35.89 | 36.87 | 45300.63 | 32045 | 0.95 |
| 1995 | 1140711.66 | 35.69 | 36.57 | 44545.20 | 31965 | 0.95 |
| 2000 | 1117750.41 | 34.91 | 35.83 | 43390.62 | 32022 | 0.95 |
| 2005 | 1100248.11 | 32.34 | 35.27 | 44068.02 | 34019 | 0.95 |
| 2010 | 1077971.94 | 29.34 | 34.56 | 45385.02 | 36744 | 0.95 |
| 2015 | 1004313.42 | 26.40 | 32.20 | 48291.99 | 38037 | 0.95 |
1. Total area, in hectares, of all the patches combined for a given cover class in the landscape.
2. Average size, in ha, of patches within a given cover class in the landscape.
3. Proportion of the landscape within the study area consisting of a given cover class.
4. Total length of edge, in km, of all patches in a given cover class in the landscape.
5. Number of patches (groups of connected cells of the same cover class) for a given cover class on the landscape.
6. Degree of aggregation of cells in a given cover class in the landscape.
7. For consistency in comparisons following Conservation Reserve Program establishment in 1986, Mean Patch Area, Number of Patches, and Clumpiness were excluded from 1985 time step.
1. Contagion reflects both dispersion and interspersion of all patch types in the landscape [53] and is used here as a reflection of landscape-level fragmentation.