Abstract It is becoming increasingly evident that many species can tolerate different degrees of habitat perturbation and that we often underestimate the capacity of some human-modified landscapes to support populations of declining species. We provide new insights into the distribution of the endangered Central American squirrel monkey and habitat changed over the last 20 years. The species has shown an approximate 60% decrease between the historic and the present extent of occurrence, with an ...
(UNAM: National Autonomous University of Mexico), Gerardo Ceballos39
Estimated H-index: 39
(UNAM: National Autonomous University of Mexico)
Resumen La lechuza de campanario ( Tyto alba ) es considerada el ave terrestre con la mayor distribucion mundial, por lo tanto sus habitos alimentarios presentan variaciones en toda su area de distribucion, esta lechuza tambien se encuentra en Mexico. En este articulo se revisaron un total de 307 egagropilas de dos localidades, “Rancho Ojitos” y “Ampliacion Casa de Janos”, ambas se encuentran dentro de la Reserva de la Biosfera Janos en Chihuahua. Se hallaron un total de 420 restos identificable...
(UNAM: National Autonomous University of Mexico), Gerardo Ceballos39
Estimated H-index: 39
(UNAM: National Autonomous University of Mexico)+ 3 AuthorsManuel Maass10
Estimated H-index: 10
(UNAM: National Autonomous University of Mexico)
Abstract Understanding the consequences of biotic and abiotic variability on population dynamics is fundamental to assessing anthropogenic impacts, such as global climate disruption, on populations and species. Our understanding from studies to date is poor, although some long-term studies of small mammals in temperate ecosystems have elucidated the roles of climate and of interspecific interactions in their population dynamics. However, the lack of long-term studies in the tropics is a major im...