Aves en sistemas agrícolas con labranza de conservación en el centro-norte de México

In Mexico, the creation of new agricultural areas causes the loss of bird species. To know the role of farming systems with zero conservation tillage-live fence (ZCT-LF) to maintain diversity-habitat use by birds, during June-September 2011, a bird monitoring was conducted in central Mexico. Species richness was analyzed with Jacknife1, the similarity with Sorensen, Conglomerates; abundance with log-normal model, c2; the diversity with Shannon-Wiener; and possible differences in these parameters with Kruskal-Wallis. Habitat use in the vertical (substrates)-horizontal planes (layers) was inferred with the frequency of observation (FO) and Poisson regression (ARP). The average results of Jacknife1 for UE’s were 38.7%, Sorensen 31%, a cluster with three subamalgamations (minimum, e= 2.7, maximum, e= 3.6) was formed; Lognormal (c2= 130.09, Y= 0.3518, 3 dof), c2 (P-value = 0.028); Shannon-Wiener H’= 2.99; Kruskal-Wallis P-value = 0.0248, 0.028, 0.4232, respectively. The FO suggest that the higher layer-substrate was most used (46.15%) - flight (27.95%); The ARP for layer, behavior, sex, age, substrate suggests that 2, 4, 1, 2 and 6 variables had significant coefficients. Mexico faces the problem of opening land to agriculture, arid and semiarid areas do not escape this phenomenon; therefore, the ZCT-LF systems are an option to maintain and preserve the avifauna.