Diversidad, abundancia relativa y patrones de actividad de mamíferos medianos y grandes en una selva seca del Istmo de Tehuantepec, Oaxaca, México

Abstract

<p>The use of camera traps and mammal track search are complementary methods to monitoring species of which is not well documented their natural history, as in the case of medium and large mammals. To ensure its conservation and good management, it is necessary to generate information about the structure of the community and their populations. The objective of the present study was to estimate the diversity, relative abundance and activity patterns of medium and large mammals in a tropical deciduous forest located in the Isthmus of Tehuantepec, Oaxaca, Mexico. Samplings were conducted in three month intervals, from September 2011 to May 2013. We used photographic-sampling and track search, two complementary sampling methods. For photographic-sampling, 12 camera traps were placed covering an area of 60km<sup>2</sup>, while for the tracks search a monthly tour of four line-transect surveys of three kilometers length each was undertaken. We obtained a total of 344 pictures with 5 292 trap-days total sampling effort; in addition, 187 track records in a total of 144km. With both methods we registered 21 species of mammals, in 13 families and seven orders, and five species resulted in new records to the area. The diversity index of Shannon-Wiener obtained with the method of tracks was H´=2.41, while the most abundant species were <em>Urocyon cinereoargenteus</em> (IAR=0.23) and <em>Pecari tajacu</em> (IAR=0.20). By the method of trap the most abundant species were <em>P. tajacu</em> (IAR=2.62) and <em>Nasua narica</em> (IAR=1.22). In terms of patterns of activity <em>P. tajacu</em>, <em>N. narica</em> and <em>Odocoileus virginianus</em> were primarily diurnal species; <em>Canis latrans</em> and <em>Leopardus pardalis</em> did not show preference for any schedule in particular, and <em>Didelphis virginiana</em> and <em>Dasypus novemcinctus</em> preferred to have nocturnal activity. This information can be of help to the creation of programs of management and conservation of mammals of medium and large in the Isthmus of Tehuantepec, Oaxaca, México.</p>

Activity patterns of mammals at Quedas do Rio Bonito Ecological Park, Lavras City, Minas Gerais State, Brazil

“…Their predominantly nocturnal behavior (MICHALSKI;NORRIS, 2011;BRAVO;SONTIN, 2012;MORENO;IRINEO, 2013) is associated with behavioral plasticity, since they fit different levels of local impact (MICHALSKI; NORRIS, 2011;LUNA, 2014;BLAKE et al, 2013). L. pardalis, which is classified as cathemeral in the present study, differed from the other studies in which it was classified as nocturnal (MAFFEI et al, 2005;GÓMEZ et al, 2005;DI BITETTI et al, 2006;TOBLER et al, 2009;DI BITETTI et al, 2010;BLAKE et al, 2012;CORTÉS-MARCIAL;BRIONES-SALAS, 2014).…”

Evaluación rápida de Mamíferos en áreas de conservación de la corporación autónoma del departamento del Quindío, Colombia.

“…Al igual que en otros inventarios de medianos y grandes mamíferos realizados en el Neotrópico y particularmente en la región andina (Gómez et al, 2001;Lavariega et al, 2012;Solari et al, 2013;Cortés-Marcial & Briones-Salas, 2014), las especies de carnívoros y roedores dominaron en número en los muestreos. Investigaciones clásicas argumentan que la diversidad de carnívoros en un lugar depende directamente de la abundancia de sus potenciales presas, haciéndolos susceptibles a las perturbaciones ambientales y a la degradación y pérdida del hábitat (Woodroffe & Ginsburg, 1999;Laidlaw, 2000;Cardillo et al, 2004).…”

Análisis espacial y temporal de la estructura de la comunidad de mamíferos medianos y grandes de la Reserva de la Biosfera Selva El Ocote, en el sureste mexicano

“…En este estudio, se encontró que las especies más comunes fueron: C. paca, D. mexicana y N. narica. Este resultado concuerda con lo hallado en otras regiones tropicales de México y del neotrópico (Blake y Loiselle, 2018;Cornejo-Solchaga, 2015; Lira-Torres y Briones-Salas, 2012). C. paca y D. mexicana son especies que pueden ser abundantes a pesar de que son altamente cazadas (Gallina et al, 2012;Pérez-Irineo y Santos-Moreno, 2013).…”