RESUMEN Presentamos 11 nuevos registros de aves procedentes de localidades del extremo noreste del estado de Hidalgo. Además, se indica la ampliación del área de distribución de Tigrisoma mexicanum. Los sitios de muestreo corresponden a parches de selva mediana subperennifolia, bosque mesófilo de montaña, vegetación riparia y áreas perturbadas. De las especies registradas, Vireo atricapilla es considerada en Peligro de Extinción por la NOM-059-ECOL-2001. ABSTRACT We report here 11 new records of birds from several localities on the northeast of the state of Hidalgo. In addition, the extension of the area of distribution of Tigrisoma mexicanum is indicated. Sampling sites have patches of evergreen seasonal forest, cloud forest, riparian and disturbed habitats. Of the recorded species, Vireo atricapilla is considered as Endangered by the NOM-059-ECOL-2001.

Conservation of large carnivores will require greater analyses of population parameters, habitat use, and distribution in multiuse landscapes as human populations increase and agriculture expands. We used Bayesian spatially explicit capture–recapture (SECR) models and completed 82 interviews in 24 localities over 4 field seasons from April 2009 to March 2013 to estimate densities and assess residents’ perceptions of jaguars (Panthera onca) in the San Blas Municipality within the southern Marismas Nacionales ecosystem in Nayarit, Mexico. Camera traps accumulated 90 detections of 9 jaguars (2 M, 5 F, and 2 individuals of unknown sex) in a 194‐km2 area during 1,575 trap‐nights from April to June 2010. We detected jaguars at 16 of the 27 camera‐trap sites and calculated a density estimate of 2.04 (SE = 0.45) individuals/100 km2 using the SECR method. This is one of the first studies to use SECR models for jaguar density estimation and 1 of only 2 studies throughout jaguar distribution to estimate population parameters of the species where human population densities reach >50 people/km2. Future studies in this unique landscape should focus on jaguar status in the northern stretches of the Marismas Nacionales and research the mechanisms that may allow this large carnivore to persist in altered landscapes among human population densities greater than previously believed to be tolerable by the species. © 2016 The Wildlife Society.

Cloud forest ecosystems contain unique flora and fauna characterized by high levels of richness and endemism. However, this ecosystem is one of the most threatened because of land-use changes stemming from anthropogenic activities. Therefore, biological inventories are necessary to adequately assess the effects of land-use changes on species now and in the future. In this study, we conducted an inventory of plants and terrestrial vertebrates (amphibians, reptiles, birds, and mammals) in three fragments of cloud forest in southwestern Mexico. Field work was carried out for 15 days per biological group during distinct time periods (2005-2008). Conventional methods of species capture and observation were employed to record species. Recorded species were then categorized based on their endemism and risk category. A total of 67 species of plants, 17 species of amphibians, 25 species of reptiles, 93 species of birds, and 46 species of mammals were recorded. The species accumulation curves for most taxa, except for birds and mammals, showed an asymptotic trend. A total of 56 species endemic to Mexico and four quasi-endemic species were recorded. Plants, amphibians, and reptiles presented the greatest number of species exclusive to Mexico (13 species). Six species of herpetofauna endemic to Guerrero were recorded. According to Mexican laws, 24 of the encountered species are under special protection, while 16 are categorized as threatened and seven as endangered. Reptiles and birds presented the greatest number of at-risk species (14 species). Bird and mammal richness in this study is high in comparison to that recorded in the cloud forests of the entire Mexican state of Guerrero (157 and 75 species, respectively). This data highlights the importance of cloud forests in the study area for local and regional biodiversity. Effective conservation strategies should be prioritized in cloud forests, as this ecosystem is poorly represented in natural protected areas.

evaluación integral de la diversidad y su relación con las características ambientales Medium and large mammals of the Sierra Madre del Sur de Guerrero, Mexico: comprehensive assessment of diversity and its relationship with environmental characteristics

ResumenSe confirma mediante fototrampeo la presencia de grisón (Galictis vittata), nutria de río neotropical (Lontra longicaudis) y conejo (Sylvilagus sp) en la Reserva de la Biosfera La Encrucijada (REBIEN), en el estado de Chiapas, México. La presencia de estas especies refleja la importancia de la REBIEN, considerada como la única área natural protegida en el estado de Chiapas que protege las especies de flora y fauna del sistema de humedales costeros, reafirmando la necesidad de continuar realizando inventarios biológicos en México.Palabras clave: cámaras trampa, carnivora, Chiapas, distribución, lagomorpha, La Encrucijada.AbstractThe presence of greater grison (Galictis vittata), neotropical river otter (Lontra longicaudis) and cottontail (Sylvilagus sp) in La Encrucijada Biosphere Reserve (ENBIRE), in the state of Chiapas, Mexico, is confirmed by camera trapping. The presence of these records reflects the importance of the ENBIRE, considered the only protected natural area in the Chiapas state that protects the species of flora and fauna of the coastal wetland system, reaffirming the need to continue conducting biological inventories in Mexico.Key words: camera-traps, carnivora, Chiapas, distribution, lagomorpha, La Encrucijada.