Mexico's extraordinary tree diversity is threatened by the increasing demand for resources because of the tenfold population growth in the last century. The conservation status of trees and both urban and rural livelihoods are also negatively affected by agriculture, mining and tourism. Nearly 60% of the Mexican endemic and near endemic tree species whose conservation status we have assessed for the Red List of the International Union for Conservation of Nature are threatened, almost double the percentage of threatened trees worldwide. If no measures are taken to protect this tree diversity properly, these resources will be forever lost for human sustainability.
Summary• Mexico is floristically the fourth most species-rich country in the world. Currently, 3620 native tree species are reported from this country. Mexico has been a forerunner at global level in recognising the need for plant conservation, yet this is in stark contrast with governmental programmes and actions, past and present that negatively affect(ed) immense areas of primary vegetation. In the framework of the Global Tree Assessment, to date, we have assessed the conservation status of nearly 1500 Mexican endemic and near endemic tree species for the International Union for the Conservation of Nature (IUCN) Red List, the distribution data of which we use here for a first meta-analysis of conservation statuses and spatial distribution patterns in a newly delimited area we call Natural Mexico.• Our database consists of 112,416 taxonomically and geographically very carefully curated distribution points of 1474 tree species endemic to Mexico and adjacent areas, belonging to 98 flowering plant families. The extensive curation methodology we consider essential for both research and conservation purposes is emphasised.
Antecedentes y Objetivos: La realización del tratamiento taxonómico de la familia Sterculiaceae para la Flora del Bajío y de Regiones Adyacentes ha dado como resultado una novedad taxonómica y una validación.Métodos: Se realizó la revisión bibliográfica y de ejemplares correspondientes a la familia Sterculiaceae en los herbarios ENCB, IEB, MEXU, QMEX.Resultados clave: Se describe e ilustra Ayenia grisea, especie nueva de México que pertenece a la sección Leiayenia. Se valida Reevesia clarkii, nombre invalido que no ha sido publicado formalmente y se aclara la ubicación taxonómica de la especie.Conclusiones: Tanto A. grisea como R. clarkii son especies endémicas de México y ocurren en la región del Bajío.
La publicación documenta la diversidad de plantas vasculares que existen en la región semiárida del Valle de Tehuacán-Cuicatlán (Puebla-Oaxaca). En particular esta publicación comprende la evaluación de la familia AMARANTHACEAE Subfamilia CHENOPODIOIDEAE. Actualmente se registran 11 géneros con 28 especies nativas, 5 de ellas endémicas y 2 introducidas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.