2007-0934 2007-0934 S2007-09342018000500971 10.29312/remexca.v9i5.266 Mexico Mexico 00 08 2018 00 08 2018 9 5 971 980

1999 10 10 155 2002 5 1 1 8-10 2012 355 1 1 353-62 2017 40 6 6 784-94 CONABIO 2015 1998 115 2007 41 2 2 51-7 2005 304 2013 977 1 1 245-52 1996 11 3 3 125-34 1989 41 1 1 105-16 2009 32 12 12 2044-61 2013 48 6 6 773-9 1991 213 2013 378 2012 3th 643 2013 30 1 1 33-9 2000 83 3 3 165-72 1973 42 10 10 889-95 SEMARNAT 2010 78 2009 431 Statistical Analysis System (SAS) 2003 2017 10 6 6 37-45 2007 742 1 1 75-83 2015 217 1 1 14-23 2002 127 3 3 442-7 1996 65 2 2 191-7 1990 80 3 3 259-65 1990 77 4 4 533-42