Table 2. Changes in landscape metrics recorded over time for six study areas. Analyses were derived from satellite remote sensing imagery, using FRAGSTATS (see text). Adapted from Newton and Tejedor (2011).


Study area Year Mean patch size (ha) Total edge length (m) Total core area (ha)
Veracruz, Mexico
1973 140 3091320 44161
1990 74 6334110 41404
1999 28 6345420 21772
Oaxaca, Mexico
1979 100 64070 514323
1989 23 105901 224689
1999 41 106689 386259
2005 47 89516 428650
Chiapas, Mexico
1990 13 113509 277821
2000 14 110960 275821
2005 14 111197 274287
Central Chile
1975 9 44400 76901
1985 6 49838 29923
1999 6 50769 23500
2008 6 41898 26149
Salta, Argentina
1977 1075 8540 682693
1987 758 15826 614457
1993 529 15455 581090
2006 330 14873 506464
Nahuel Huapi, Argentina
1973 9 79360 115080
1985 14 52587 135654
1997 12 62150 145918
2003 14 52021 132901