Results Thirteen habitat corridors between JCMA were identified; out of them, seven were viable and six potential (Tables 2 and 3; Fig. 1),together they comprise an area of 32 695 km2(20 173 km 2 viable and 12 512 km 2 potential). There were Protected Natural Areas(PNA, 3296 km2 that correspond to 16.33% of the corridors) in five viable corridors and in five potential corridors (Tables 2 and 3;supplementary data). Exist records of jaguar in six of the viable corridors and in five of the potential corridors (supplementary data).The minimal width of the viable corridors is 14.25 km and the maximal length is 230 km (Table 2). The minimal width of the potential corridors is 2.43 km and the maximal length is 320 km.The viable and potential corridors characteristics are shows in the supplementary data.Twenty-three stepping stones between the Could Forests ofierra Madre Oriental and the northern Mixe Oaxaca were identified, with extensions between 17 and 1020 km2(total area:2596 km2); the shortest distance between these patches is 1 km and the longest 23 km (Fig. 2).Six stepping stones from southern Pacific coast to the north of Olinalá were identified, with extensions from 92 to 1020 km, which account for a surface of 2770 km 2. The shortest distance between these is 1 km and the longest is 11 km (Fig. 3).