Underlying and proximate drivers of biodiversity changes in Mesoamerican biosphere reserves.

Protected areas are of paramount relevance to conserving wildlife and ecosystem contributions to people. Yet, their conservation success is increasingly threatened by human activities including habitat loss, climate change, pollution, and species overexploitation. Thus, understanding the underlying and proximate drivers of anthropogenic threats is urgently needed to improve protected areas' effectiveness, especially in the biodiversity-rich tropics.

How diverse are the mountain karst forests of Mexico?

Tropical forests on karstic relief (tropical karst forest) are among the most species-rich biomes. These forests play pivotal roles as global climate regulators and for human wellbeing. Their long-term conservation could be central to global climate mitigation and biodiversity conservation.

Seed predation and potential seed dispersers of the narrow endemic (Zamiaceae).

In this study, we report the observation of potential seed dispersers of the endemic to Mexico and narrowly distributed (Zamiaceae). Camera traps were installed in front of two plants of and cone phenology until their maturity and disintegration was determined. The female cone of has a development of ten months, from the time it emerges until it disintegrates.

Two new species of Pharaxonothinae beetles (Coleoptera: Erotylidae) inhabiting cones of the cycad Ceratozamia santillanii Prez-Farr. amp; Vovides (Cycadales: Zamiaceae) in Mexico.

Two beetles, Ceratophila (Vovidesa) chipjonesi, new species, and Pharaxonotha perezi, new species, (Coleoptera: Erotylidae: Pharaxonothinae) are described from the male cones of the New World cycad Ceratozamia santillanii Prez-Farr. Vovides (Cycadales: Zamiaceae). Morphological analysis and keys are provided for distinguishing these from related beetles inhabiting Ceratozamia in Mexico.

Taxonomic updates in (Bignoniaceae): A new Mexican species and the re-establishment of the giant-leaved .

In this study, we analyzed the morphological affinities of the 24 species of based on detailed morphological studies and multivariate cluster analyses. Our results suggest that the genus includes six morphological groups that can be easily distinguished based on floral and fruits characteristics: group, group, group, group, group, and group. A new species from Mexico, , is described.

A new species of Amphitecna (Bignoniaceae) endemic to Chiapas, Mexico.

Amphitecna loreae Ortiz-Rodr. & Burelo, sp. nov.