Ramón Cuevas Guzmán

• Doctor en Ciencias
• Principal Investigator at University of Guadalajara

The genus Quetzalcoatlia was recently segregated from the paraphyletic genus Graptopetalum and consists of six species, confined to western Mexico, in the states of Jalisco, Michoacán and Colima (Vázquez-García et al. 2023). The alpha-taxonomy of Quetzalcoatlia (Crassulaceae, Saxifragales) has been summarized below, which includes the addition of f...

Two new species are described and illustrated. Echeveria cuevasii shares with E. flammigera typical characteristics of Echeveria of the Nudae series, for instance, a subshruby habit, medium-sized rosettes and short sub spicate inflorescences. However, it differs from the latter by having fewer shorter branches, longer leaves, more flowers per inflo...

As formal education is increasingly valued among rural and Indigenous communities, a common assumption is that local ecological knowledge may simultaneously become devalued or lost. To solve this, several scholars point out that using ethnobotanical knowledge to teach science can be a great way to engage students and help them learn scientific conc...

Background: High-severity fires are serious anthropogenic threats to forests, as they can cause forest degradation on unrecoverable scales. Therefore, understanding the patterns and drivers of post-fire regeneration is essential to designing restoration proposals. Hypotheses: After a high-severity fire, we expected greater species richness and abu...

Antecedentes: Aunque la sequía y la defoliación incrementan el riesgo de muerte de las plántulas en los bosques tropicales secos, pocos estudios han evaluado la respuesta de las especies forestales con la combinación de estos factores. Preguntas: ¿Cuál es la estrategia de uso del agua de las plántulas y cómo afecta su crecimiento? ¿Cuál es el impa...

Functional diversity indices have been used to differentiate the relative contribution of stochastic and deterministic processes that modulate the assemblage of communities; however, knowledge regarding the relative contribution of assemblage mechanisms in forest communities is scarce. We analysed the assembly mechanisms driving forest assemblages...

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...

Antecedentes: El conocimiento de los atributos estructurales y el hábitat de las especies son fundamentales para evaluar su estado de conservación y proponer acciones para su conservación y manejo. Preguntas: ¿Cuáles son los atributos estructurales de la poblacional de J. jaliscana, las características de su hábitat y los factores ambientales que...

Ethnobotanical knowledge, also known as Local Ecological Knowledge (LEK), of edible plants includes identifying plants using local names and knowledge of specific preparations and ecological characteristics. We analyze children’s ethnobotanical knowledge of 107 species of edible plants in two rural locations in western Mexico and the sociodemograph...

Licaria ramiroi , a species endemic to western Mexico, is described and illustrated. The ascription of the new species to Licaria is analysed. It is classified in the subgen. Licaria and is most closely related to L. triandra and L. siphonantha from which it differs by its glabrous vegetative and floral structures, stamens mainly with free anthers...

Las poblaciones de aves de ciénagas han decrecido en el neotrópico; se consideran entre las principales causas la pérdida y degradación de los humedales. Con el fin de proveer de información sobre las poblaciones de aves de ciénagas y sus hábitats, se analizó la abundancia de las aves y su relación con algunas característicasambientales y estructur...

Opuntia is a genus of plants known as prickly pear cactus (nopales), with about 200 species, and is taxonomically complicated. The present study was focused on characterizing micromorphology and providing a phylogenetic hypothesis to place Opuntia setocarpa (described in 2017) in relation to other related species. Three individuals were characteriz...

Functional diversity and the contribution of functional traits in mangrove ecosystems dynamics in western Mexico remain unknown. In this study, we assessed functional variability and intraspecific trait variation in three different mangrove zones. We developed and tested the following hypothesis: (i) mangrove species vary along trait axes associate...

This document present a summary of the main morphological, ecological and ethnobotanical characteristics of the taxa of Zea genus (Poaceae).

Functional diversity and the contribution of functional traits in mangrove ecosystems dynamics in western México remain unknown. In this study, we assessed intraspecific trait variation in three different mangrove zones. We developed and tested the following hypothesis: i. mangrove species vary along trait axes associated with plant size and leaf e...

We recorded 129 species (estimate: 96 % completeness): 19 endemics to Mexico, 13 in some risk category, and 21 considered indicators. Elevation determined the distribution and abundance of species, and the lower elevational bands, had the highest richness and abundance values.

Introducción: México concentra alrededor del 11 % de las especies de aves del mundo, de las cuales el 20 % son endémicas del país, concentrándose el mayor número en la región occidental. Objetivo: Analizar la composición, diversidad y distribución de la avifauna a lo largo de un gradiente altitudinal en el occidente de México. Métodos: La investi...

El conocimiento de los patrones de floración y fructificación de las especies arbóreas es de importancia por la relación que presentan con polinizadores, dispersores y su contribución para conocer las mejores fechas de recolecta de flores y frutos con propósitos taxonómicos y reproductivos. Por lo anterior, se analizaron los patrones de floración y...

Sedum dormiens (Crassulaceae) from the Sierra de Manantlán in Jalisco, Mexico, is described. The distinctive characters of the species are its chamaephytic nature, capillary roots, formation of large colonies, tetramerous flowers with white petals, dormant terminal and lateral buds in the mother plant and connate fruits of ½–¾ its length. The habit...

The ability to name plants is part of one's theoretical botanical knowledge, which is neither static nor presented equally among all members of a cultural group. This article analyzes the intracultural variation of knowledge in the cultural domain of edible plant species among a rural population of western Mexico. We evaluate individuals' capacity...

“Flora arbórea de la Estación Científica Las Joyas y área adyacentes, Sierra de Manantlán, México”, es un libro en el que se tratan 145 especies de árboles que además de registrarse para la ECLJ se distribuyen, muchos de ellos, en las regiones subtropicales y templadas de las zonas montañosas del occidente de México. La obra se acompaña de 145 ilus...

Introduction: Numbers of alien plant species are rising around the globe, but not all of them become invasive. Whereas introductions have been documented for several decades in some regions of the world, knowledge on alien species in Western Mexico is limited. Here, we study roadside vegetation along an elevational gradient, which includes a protec...

Prionosciadium guzmanianum, a second species of Prionosciadium with red flowers is described and illustrated. The genus is almost endemic to the Mexican Republic and presents a high richness and endemism in western Mexico. Given the color of its flowers, the closest relationship of the new species is with P. tamayoi, from which it differs by the ba...

Growing numbers of alien plant species threaten natural ecosystems worldwide. Mexico, as a megadiverse country, has lower numbers of alien species than other regions in America. However, there is a lack of information on the factors that determine the diversity patterns of alien species and their relative importance in the vegetation. The diversity...

Sideroxylon cochranei (Sapotaceae) from Sierra de Manantlán and Cuale, in Jalisco, México is here described and illustrated. It is morphologically close to S. salicifolium, but it differs from the latter in being montane cloud forest trees versus seashore to lower montane tropical trees, also in having clustered leaves with longer petioles and sepa...

Resumen Sideroxylon brucebenzii se propone como especie nueva para la ciencia. La especie se relaciona morfológicamente con el grupo de taxones con preferencia por hábitats tropicales húmedos y con pétalos indivisos, pero se separa de ellos por un conjunto de caracteres florales, estando entre los principales sus corolas, estambres y estaminodios p...

Este estudio tuvo por objetivo el análisis cuali-cuantitativo de los contenidos botánicos de los libros de texto de ciencias naturales de las escuelas primarias rurales de México, cuya finalidad fue identificar posibilidades de contextualización para el diálogo intercultural en la enseñanza de ciencias. Se encontraron 88 referencias con enfoque teó...

Introducción: Annona purpurea es un árbol Mesoamericano, distribuido por la vertiente pacífica y atlántica de México hasta Sudamérica. Diferentes partes de la planta son de utilidad y los frutos son comestibles. Objetivo: Describir la estructura poblacional, el hábitat y los factores ambientales que influyen en la distribución y abundancia de A. p...

Resumen Prionosciadium tamayoi se describe como especie nueva para la ciencia. Se separa de las conocidas dentro del género por sus divisiones foliares lineares y enteras o crenadas, sus frutos pequeños y flores color rojo coral. Se proporciona información sobre su hábitat y se ilustran los caracteres morfológicos; además, se compara con los taxone...

Premise: Resource availability affects biomass allocation in ways that could influence plant responses to disturbance such as fire. This is important because fire also varies across landscapes in ways that are correlated to resource availability. We hypothesized that plants growing in landscape microsites with a shortage of nutrients and water all...

The composition of bark beetle species in a mixed pine-broadleafed forest was determined, as part of an evaluation of tree mortality at the Sierra de Manantlán Biosphere Reserve, Jalisco, Mexico. In two stands with the same environmental conditions, monthly collec- tions were made using two types of traps (containers with 70% alcohol and glue sheet...

Marsh birds have decrease their populations in the neotropic; among the main causes are the lost and degradation of wetlands. With the objective of providing information about marsh bird´s populations and their habitats, we analyze bird’s abundance and its relationship with some environmental and structural features of marshes from a portion of Lak...

Aim of the study: To analyze the recovery pattern of carbon pools in terms of size and the relative contribution of each pool to total ecosystem C along a fire chronosequence of tropical mixed pine-hardwood forest. Area of the study: Las Joyas Research Station (LJRS), core zone of Sierra de Manantlán Biosphere Reserve (SMBR) in the state of Jalisc...

En los bosques de pino con un régimen histórico de incendios superficiales frecuentes de baja severidad, bajo condiciones extremas del estado del tiempo o a consecuencia de la supresión del fuego, la severidad de los incendios puede incrementar. La respuesta de la vegetación a eventos de incendios severos se estudió en una cronosecuencia postincend...

Known distribution of Schlegeliaceae family is extended by the presence of Gibsoniothamnus cornutus in western Mexico. The description of the species is lengthened, including the pollen grain description, which is scarcely described in the family. Information on the ecology of the species is provided, and several of its characters are illustrated w...

Known distribution of Schlegeliaceae family is extended by the presence of Gibsoniothamnus cornutus in western Mexico. The description of the species is lengthened, including the pollen grain description, which is scarcely described in the family. Information on the ecology of the species is provided, and several of its characters are illustrated w...

Little is known about insect and plant diversity in the regions of origin of many cultivated plants. Maize (Zea mays subsp. mays) was originally domesticated in Mexico from the wild annual teosinte Zea mays subsp. parviglumis. The first objective of this study was to compare the diversity of herbivore leafhoppers (Hemiptera: Cicadellidae) in annual...

Forest structure and abiotic factors influence the habitat use of many mammals. For insectivorous bats, characteristics such as plant density, canopy cover, temperature, relative humidity and other seasonal changes over the course of the year can be important as regulators of food resource accessibility, and consequently of their nutritional health...

Ixchelia kochii Cuevas (Violaceae, Rinoreeae), a new species from western Mexico, is described and illustrated; it constitutes the third species of a recently described genus endemic to Mexico and Central America. The species grows in ecotones between tropical subdeciduous forest and montane cloud forest. The species of the genus are compared, and...

Ecología Variación ambiental y composición florística de especies arbóreas en un bosque húmedo de montaña del occidente de México Environmental variation and floristic composition of tree species in a humid mountain forest in western Mexico *Autor para correspondencia: molvera@cucsur.udg.mx (M. Olvera-Vargas) Recibido: 31 agosto 2017; aceptado: 02...

Humid mountain forest (BHM) in Mexico circumscribes a set of very heterogeneous forest communities that differ in structure, floristic composition and environmental complexity. To contribute to the knowledge of the effect of environmental variation on the floristic composition of a BHM located in the sierra de Cacoma, in western Mexico, this resear...

Changes in structure and taxonomic composition of the arboreal component of a tropical montane cloud forest were monitored along 12 years (1998, 2004 and 2010) with eight 2,500 m2 permanent plots in south-central Jalisco, WesternbMexico. Changes in structure (density, frequency, basal area and relative importance value index-IVI) and composition (s...

Changes in structure and taxonomic composition of the arboreal component of a tropical montane cloud forest were monitored along 12 years (1998, 2004 and 2010) with eight 2,500 m2 permanent plots in south-central Jalisco, Western Mexico. Changes in structure (density, frequency, basal area and relative importance value index-IVI) and composition (s...

Mangrove ecosystems are important sources of goods and services to people, supporting ecological, biological, social and economic values. Nevertheless the scale of human-impact on mangroves in many countries has increased dramatically over the past years. Understanding their structure and plant composition is decisive for a proper design of conserv...

The present research involved vegetation and environmental reconstruction of a Pinus-Quercus-Abies dominated forest in west-central Mexico over the last 1,580 years. Paleoecological techniques such as the analysis of pollen, micro-fossil charcoal particles, and geochemical elements were used to document changes in the taxonomic composition of veget...

Sloanea cuautitlanensis is described and illustrated. We give information about its ecology and distribution and discuss its relationships with the species with most affinity: S. cruenta, S. jamaicensis, S. terniflora and S. uniflora. A key is provided to separate it from its most related species.

Resumen Se describe e ilustra Opuntia setocarpa, un nopal del estado de Jalisco. La especie pertenece a la serie Criniferae Pfeiffer. Se distingue por sus cladodios con epidermis papilosa, aréolas pequeñas y próximas, las aréolas de cladodios, pericarpelo y frutos con cerdas setosas largas y blancas, que las pierde en la madurez. Se proporciona inf...

The recovery of vegetation cover is a process that has important implications for the conservation of biodiversity and ecosystem services. Generally, the recovery of vegetation cover is documented over large areas using remote sensing, and it is often assumed that ecosystem properties and processes recover along with remotely sensed canopy cover. H...

Aristolochia purhepecha, a new species of the subsection Pentandrae is proposed. The species is described and illustrated, its relationship with similar species is discussed, and a key for their identification is provided. © 2017 Universidad Nacional Autónoma de México, Instituto de Biología.

Pineapple cultivation in Mexico [Ananas comosus (L.) Merr.] under an industrialized scheme began when it was established in the Papaloapan region in the XX century. However, its production under a peasant agroforestry scheme is known to have existed several centuries before despite the scarce knowledge. We document the woody vegetation’s compositio...

Mediante la identificación crítica de 2,250 números de recolecta de plantas vasculares, reunidos de noviembre de 2009 a mayo de 2014, en el predio de Villas de Cacoma, en la sierra de Cacoma, municipio de Villa Purificación, Jalisco se registran 136 familias, 451 géneros, 775 especies y 13 unidades infraespecíficas. Las familias más ricas en género...

p>Se registra por primera vez para México la especie naturalizada Acanthosyris glabrata (familia Cervantesiaceae), un árbol hemiparásito sólo conocido del noroeste de Sudamérica. Se proporciona información sobre su hábitat y se presenta una ilustración de la especie. Se propone una hipótesis de comercio maritimo entre Ecuador y México para explicar...

Se presenta un análisis de las especies de pastos que se han registrado en el estado de Colima, además de proporcionar una relación de las especies de la Entidad.

Se proporciona información sobre las especies de Rubiaceas registradas para el estado de Colima, sobre sus usos, ecología. Se presenta el catálogo de las especies encontradas en la Entidad.

Por medio de técnicas paleoecológicas se documentó la historia florística y ambiental del bosque mesófilo de monta˜na con presencia relictual de Acer saccharum subsp. skutchii del centro-occidente de México. La reconstrucción de la vegetación de los últimos 720 a˜nos se efectuó a través del núcleo de sedimento (TLP-N2) de 37 cm de profundidad; los...

Por medio de técnicas paleoecológicas se documentó la historia florística y ambiental del bosque mesófilo de montaña con presencia relictual de Acer saccharum subsp. skutchii del centro-occidente de México. La reconstrucción de la vegetación de los últimos 720 años se efectuó a través del núcleo de sedimento (TLP-N2) de 37cm de profundidad; los ind...

Eighteen explorations were conducted from June to October of 2006 and 2007 to the northern slopes of mount El Cipil, located to the west of the municipality of Casimiro Castillo, on the south coast of the state of Jalisco, Mexico. In total, 441 fungal specimens were collected, of which 151 were identified, corresponding to 101 species, which belong...

Se realizaron 18 exploraciones a la vertiente norte del cerro El Cípil, ubicado al oeste del municipio de Casimiro Castillo, en la costa sur del estado de Jalisco, México, durante los meses de junio a octubre de 2006 y 2007. Se recolectaron 441 especímenes de hongos, de los que se determinaron 151 que corresponden con 101 especies, las cuales perte...

Etnoagroforestería en México compila el esfuerzo de 40 investigadores (en su mayoría mexicanos y de diversas universidades del país) quienes comparten el interés y la preocupación por mantener viva la rica expresión de la diversidad biocultural de México. Sus estudios etnoagroforestales se construyen como una aproximación transdisciplinaria capaz d...

Megastigma morenoi is described and illustrated. We discuss its relationships to other species of the genus and provide information on its distribution and ecology and a key to separate it from the other species of the genus.

Fire severity can increase above historical levels due to factors such as human-derived fire suppression and climate change. Studies about the effects of high-severity fires on soil carbon and nutrients in pine forest at tropical latitudes are still rare. We analyzed the changes in C, N, and P contents in the organic layer and the top mineral soil...

Summary The Integration University-Society for social development and environmental management is founded in adequate interrelations of local stakeholders' problems with natural resource conservation problems. Universitiesmain mission is actively integrating teaching, research and extension activities, in order to form professionals with knowledge...

The recently described Lepechinia flammea was originally known only from the Sierra Madre del Sur in Guerrero, Mexico. However, a new population of this species was uncovered in Jalisco during recent botanical explorations. Additionally, it was more recently described in Oaxaca as L. oaxacana, a name that in this work is synonymized with L. flammea....

A new species of Solanum from Sierra de Cacoma, a little known and explored floristic region in Western Mexico, is described and illustrated. Solanum edmundoi should be placed in section Aculeigerum, on account of its scandent habit, recurved prickles on stems and leaves, and indument with septate simple hairs and slightly attenuated anthers. It di...

1 Autor para la correspondencia: rcuevas@cucsur.udg.mx RESUMEN Se registra por primera vez a Tourrettia lappacea para el occidente de México, ampliando en más de 1300 km su distribución geográfica conocida. Se proporciona información sobre su hábitat y fotografías que ilustran a la especie. ABSTRACT We register for the first time the presence of To...

We register for the first time the presence of Tourrettia lappacea in western Mexico, expanding with more than 1300 km its known geographic distribution. We also provide information on its habitat and include photographs of the species.

Among tropical ecosystems, the tropical dry forest is the most endangered. We studied forage quality and potential production for nineteen plant species in five tropical dry forest and three grassland sites at ejido "Zenzontla", Sierra de Manantlán Biosphere Reserve (México). All sites are being grazed by livestock of the ejido peasants. We identif...

La Estación Científica Las Joyas (ECLJ) de la Sierra de Manantlán ha tenido un fuerte historial de perturbaciones. En 1988 se instaló un cerco perimetral que delimitó la estación, quedando esta área exenta de perturbaciones antrópicas. El cercado dividió diferentes rodales de bosque mesófilo de montaña, de pino y de pinoencino, quedando estos rodal...

Article PHYTOTAXA ISSN 1179-3155 (print edition) ISSN 1179-3163 (online edition) ABSTRACT. Recent morphological and phenological data support recognition of Abies jaliscana (Martínez) Mantilla, A. Vázquez & Shalisko at the species level. A key to distinguish A. jaliscana from other species of Abies in western Mexico is provided. Resumen Datos morfo...

Trabajos de rehabilitación y Mantenimiento de la Carretera Amatitán a Huejuquilla y Ejido Santa Catarina Cuexcomatitlán (Estudio Técnico Justificativo de Cambio de Uso del Suelo y Maniestación de Impacto Ambiental Modalidad Regional para la Realización de los Trabajos de Construcción del Camino-Jardín Inscrito en los Límites de la Comunidad Wirárri...

We investigated how environmental variables explain patterns of tree regeneration in high altitude sub-tropical Quercus-dominated forests by: (1) determining whether the seedling and sapling communities show non-random spatial patterns of floristic composition; (2) identifying which environmental variables explain the observed patterns of floristic...

p class="NoSpacing1">Structure and perennial woody diversity in the cropping pineapple agroecosystem is described. It is developed like main component in understory of tropical subdeciduous and Quercus forest, in combinations with cultivated non-native species; revealing a characteristic agroforestry system, in western Mexico (Jalisco and Nayarit)....

RESUMEN Se describe la estructura y la diversidad arbórea del agroecosistema de piña, el cual se desarrolla como componente principal del sotobosque en el bosque tropical subcaducifolio y encinares caducifolios, con combinaciones de especies introducidas, revelando un característico sistema agroforestal para la región del occidente de México (Jalis...

La obra, como toda la información producida por la Comisión, puede además ser consultada y bajada del siguiente sitio de la página web: www.biodiversidad.gob.mx/ecosistemas/bosqueNublado.html La obra contiene una introducción al tema y once capítulos dedicados a temas centrales en el universo de conocimiento de los principales grupos de organismos...

Structure and perennial woody diversity in the cropping pineapple agroecosystem is described. It is developed like main component in understory of tropical subdeciduous and Quercus forest, in combinations with cultivated non-native species; revealing a characteristic agroforestry system, in western Mexico (Jalisco and Nayarit). This is an extensive...

This work was carried out with the purpose of knowing the species of Aristolochia L. (Aristolochiaceae) in the state of Colima. Twelve of the species belong to the section Gymnolobus Duch., five of them endemic, and one to the section Hexodon Duch.Together these represent 20 % of the species recognized for Mexico. None of the species are protected...

Ten new species of Magnolia (Magnoliaceae) are described and illustrated; seven of the species are from Mex- ico: M. decastroi, M. faustinomirandae, M. ofeliae, M. pedrazae, M. vovidesii, M. wendtii and M. zamudioi; one from Costa Rica: M. savegrensis; one from Bolivia: M. madidiensis and one from Brazil: M. paranaensis. Two new combinations are pr...

Echeveria yalmanantlanensis, a new species from eastern Sierra de Manantlán, Biosphere Reserve, on the Jalisco-Colima border in western Mexico, is described and illustrated, and a table for comparison of morphologically related taxa is provided. This species belongs to series Valvatae, differing from the other members of the series by its acaulesce...

The incidence of insect predators on orchids was evaluated in seven plots located at the Las Joyas Research Station (LJRS), Jalisco, Mexico. This research was conducted between September 2009 and February 2010. A total of 130 species from 16 orchid genera were identified. S. martiniana, C. pendula, O. tigrinum and R. splendens were the main host or...

Agave manantlanicola, a new endemic species from the high altitude mountains of the Sierra de Manantlán in western Mexico, is described and illustrated. The species belongs to the subgenus Littaea and Gentry’s Amolae group. The new species is compared to other morphologically similar species from western Mexico, including Agave attenuata subsp. att...

As part of a major project on the genus Salvia in the state of Jalisco and adjacent areas, Mexico, 4 new taxa of Salvia L. are described and illustrated. Identification Keys for the related species and comparison tables of morphological characters are given. Three of them were tentatively proposed -but not formally published- as new species in the...

Salvia meera, S. rogersiana, S. santanae and S. concolor var. iltisii (Lamiaceae), three new species and a variety from Jalisco, Mexico Salvia meera, S. rogersiana, S. santanae y S. concolor var. iltisii (Lamiaceae), tres especies nuevas y una variedad de Jalisco, México Abstract. As part of a major project on the genus Salvia in the state of Jalis...

Structure, floristic composition and diversity in Abies forests were determined in twenty–four 0.1 ha plots in 5 areas in Jalisco State. The resulting attributes were compared between areas. Sixty four species, 47 genera and 35 families were recorded. The families Asteraceae, Pinaceae and Fagaceae, as well as the genera Quercus, Pinus and Abies had...