Majela Hernández

University of Havana · Departamento de Biología Vegetal

Evolutionary biologists recognize that understanding the phylogenetic history of closely related species is challenging without considering their population genetics history. The taxonomy of Magnolia sect. Talauma in Cuba has long been debated, with several changes in taxon delimitations. All these taxonomic revisions were based exclusively on leaf...

An accurate taxa delimitation, based on a full understanding of evolutionary processes involved in taxa differentiation, can be gained from a combination of ecological, morphological, and molecular approaches. The taxonomy of Magnolia subsect. Talauma in Cuba has long been debated and exclusively based on traditional morphological study of a limite...

The taxonomy of Magnolia subsect. Talauma in Cuba has been largely debated and changed. Some authors have considered the variability of the group in a single taxon while others have divided it into two, three, and four-taxa. The present work aimed to model the ecological niche of the Cuban taxa of Magnolia subsect. Talauma, and identify which of th...

Magnolia virginiana subsp. oviedoae is a threatened and endemic subspecies from Majaguillar swamp (Cuba). New surveys have shown an increase in the number of idividuals and occupied zones. Nevertheless, the magnitude and potential causes of this population growth, which could be key for the conservation of this species, are not known accurately. Ou...

Antecedentes: Gran parte de las evaluaciones del estado de conservación de los taxones de Magnoliaceae en Cuba se han basado en inferencias sobre su distribución y tamaños poblacionales. No obstante, estas investigaciones se han enfocado en un taxón o subsección. Preguntas: ¿Cómo se distribuyen los taxones nativos de Magnoliaceae en Cuba? ¿Cuál es...

Landscape features impact gene flow and the spatial patterns of genetic variation between populations of a species. Because many Magnoliaceae species occur in fragmented and highly disturbed landscapes, the family provide an excellent model for landscape genetic studies. This research focuses on the subspecies and subpopulations of Magnolia cubensi...

The Caribbean islands provide an ideal setting for studying biodiversity, given their complex geological and environmental history, and their historical and current geographical proximity to the American mainland. Magnolia, a flagship tree genus that has 15 endemic and threatened taxa (12 species and 3 subspecies) on the Caribbean islands, offers a...

The recovery of species’ populations is one of the most challenging tasks in conservation, which is why species recovery is most likely to be successful if it involves as many stakeholders as possible. Podocarpus angustifolius , a tree endemic to Cuba, is potentially threatened by overexploitation, deforestation and expansion of exotic species. In...

Landscape features impact gene flow and the spatial patterns of genetic variation between populations of a species. Because many Magnoliaceae species occur in fragmented and highly disturbed landscapes, the family is an excellent model for landscape genetic studies. This research focuses on the subspecies and localities of Magnolia cubensis and aim...

RESUMEN La genética del paisaje integra la genética poblacional, la ecología del paisaje y las estadísticas espaciales para cuantificar el efecto de la com- posición del paisaje, la configuración y la calidad de la matriz en el flujo de genes y la variación genética espacial. Estos estudios permiten ana- lizar la influencia de las variables del pai...

Genetic data on threatened plant populations can facilitate the development of adequate conservation strategies to reduce extinction risk. Such data are particularly important for species affected by habitat fragmentation such as Magnolia cubensis subsp. acunae , a Critically Endangered magnolia subspecies endemic to Cuba. Using genetic data from 6...

Estructura poblacional de Magnolia cubensis subsp. cubensis (Magnoliaceae) en el Paisaje Natural Protegido Gran Piedra Population structure of Magnolia cubensis subsp. cubensis (Magnoliaceae) in the Gran Piedra Protected Natural Landscape

The classification of the Cuban Odonata is difficult by the complexity of wing venation. These appendixes have become in very useful tools in studies of geometric morphometrics. For this reason the objective of this work is the evaluation of the potential of wing shape differences for numeric classification and as a basis for an automated identific...

The leaves of Magnolia cubensis have continuous variations, that makes difficult the identification at level of subspecies. One of the emergent solutions in front of this difficulty is the classification by digital analysis of images, with the use of the geometric morphometric. Star􀆟ng from the characteriza􀆟on of leaf shape of both subspecies, the...

RESUMEN Los estudios demográficos constituyen una valiosa y efectiva herramienta para conocer el estado de las poblaciones. En Magnolia cubensis subsp. acunae estos estudios permitirían la comprensión de procesos que describen la biología poblacional de esta subespecie, así como los factores que determinan su distribución, aspectos de gran importa...

Conserving tree populations safeguards forests since they represent key elements of the ecosystem. The genetic characteristics underlying the evolutionary success of the tree growth form: high genetic diversity, extensive gene flow and strong species integrity, contribute to their survival in terms of adaptability. However, different biological and...

“Incentivando estudiantes: en busca de reliquias ocultas de nuestra flora”. La primera experiencia “Inspiring students: in search of hidden relics of our flora”. The first experience Recibido: julio 2016 Aceptado: octubre 2016 Publicado online el 2 de noviembre de 2016 y será incluido en el volumen 37. ISSN 2410-5546 RNPS 2372 (DIGITAL) - ISSN 02...

One of the most effective ways of evaluating the historical changes in the properties from the vegetation cover to great scale is by techniques of remote perception, by spectral vegetation indexes. Considering the absence of information on the dynamics of the vegetation in Cuban protected areas, the present study has as objective to evaluate the va...

Análisis multitemporal del Índice Normalizado de Diferencia de Vegetación (NDVI) en Cuba Multitemporal analysis of the Normalized Difference Vegetation Index (NDVI) in Cuba Recibido: septiembre 2015 Aceptado: diciembre 2015 Publicado: 28 de abril de 2016

The leaves of plants show a wide variety of shapes, which generally depend on the conditions under they are developing. Sometimes, these variations tend to be constant so that the quantification of such characters by using geometric morphometric may be more efficient than traditional morphology. This tool was used to characterize the shape of leave...