Eduardo Estrada

• Universidad Autónoma de Nuevo León, Nuevo León, México

A compendium of the legumes of the subfamily Papilionoideae, tribes Amorpheae, Brongniarteae, and Dalbergieae in northeastern Mexico is presented for the first time, including changes in their botanical nomenclature within tribes and genera. Based on recently published studies, the taxonomic limits of several genera and new ones segregated such as...

La relación humano-felino ha sido evaluada principalmente desde la perspectiva de la biología de la conservación. Sin embargo, es importante conocer las relaciones socioecológicas, desafortunadamente, estas han sido poco exploradas, a pesar de la documentación e importancia de estos depredadores. En este estudio se documentaron las percepciones y c...

Cliff ecosystems provide refuge to 35%–66% of the world's endemic plants. However, they face growing threats from sport climbing. Evidence suggests that unclimbed cliffs harbour approximately twice the plant richness compared with climbed cliffs, with increasing impact as climbing intensity increases. Unfortunately, it remains unknown whether the c...

Antecedentes: Altas Cumbres es un área natural protegida ubicada en el centro del estado de Tamaulipas, la cual no ha sido suficientemente estudiada. A pesar de que las leguminosas son una familia bien representada en la zona, hasta ahora, no se habían realizado estudios que dieran a conocer su riqueza y distribución. Preguntas: ¿Cuántas y cuáles...

As part of the Fabaceae project of northeastern Mexico and based on field work, collection of botanical samples over the past 37 years, and reviewing botanical materials in national and international herbaria, the diversity of legumes of the subfamilies Caesalpinioideae (excluding tribe Mimoseae), Cercidoideae, and Detarioideae in northeastern Mexi...

Comprender la estructura y diversidad forestal permite elaborar y analizar estrategias para el manejo sustentable de los recursos naturales. El objetivo de la investigación fue contribuir al conocimiento de la estructura arbórea, así como su capacidad de regeneración en un gradiente altitudinal en un Área Natural Protegida, en Madera, Chihuahua. El...

Objective: raising kids is a fundamental activity in goat production, since their development is the source of replacements for the dairy herd or the sale of meat. Therefore, the impact in the kids’ growth of adding Lippia palmeri S. Watson oregano to the goat diet was evaluated. Materials and methods: a total of 17 kids born from mothers who consu...

1. Cliff ecosystems provide refuge to 35-66% of the world’s endemic plants. However, they face growing threats from climbing. Evidence suggests that untouched cliffs harbor approximately twice the plant richness compared to climbed cliffs, with increasing impact as climbing intensity increases. Unfortunately, the origin and extent of the climbing i...

Últimamente se ha descrito una disminución de la abundancia y diversidad de insectos, así como una alteración del régimen de incendios forestales. Debido a la sensibilidad de las mariposas a los cambios ambientales, se estudió la riqueza de mariposas en 2 bosques, uno afectado por un incendio y otro sin indicios de fuego. Mediante el muestreo en tr...

As part of the Fabaceae project of northeastern Mexico, today we present the compendium of legumes of the subfamilies Caesalpinioideae, Cercidoideae and Detarioideae from this region. As in our previous work on the Mimosoideae Clade, new nomenclatural changes and retypification of genera of the subfamily Caesalpinioideae are included. Also, based o...

A synoptic compendium of the legumes of the Mimosoideae clade in northeastern Mexico is presented for the first time, including changes in their botanical nomenclature and retypification of genera. Furthermore, based on new information recently published, the taxonomic limits of several new genera segregated from Acacia (Acaciella, Mariosousa, Sene...

A synoptic compendium of the legumes of the Mimosoideae clade in northeastern Mexico is presented for the first time, including changes in their botanical nomenclature and retypification of genera. Furthermore, based on new information recently published, the taxonomic limits of several new genera segregated from Acacia (Acaciella, Mariosousa, Sene...

Bryophytes are taxa mainly related to sites with water availability, however, in areas with limited water resources they are present in regions such as the semi-arid area of Durango; Therefore, considering that these types of ecosystems are generators of endemisms, it will be possible to find endemic species for the region of interest to science. B...

Se estudiaron la flora útil y los usos de las plantas del área rural de Linares, Nuevo León. Se realizaron 180 encuestas semiestructuradas en seis ejidos. Se registraron 75 familias, 194 géneros y 253 especies con uso etnobotánico. Las principales categorías de uso fueron: ornamental (105 especies), medicinal (83), alimento (6) y maderable (25), la...

Los servicios ecosistémicos de los humedales son fundamentales para la sustentabilidad de las sociedades por su aporte alimentario y regulación del clima; su gradual deterioro agudiza la crisis ambiental y disminuye la calidad del agua. Los sitios Ramsar fueron creados para la protección de los humedales del Planeta, con el objetivo de preservar la...

Estudiar el banco de semillas permite interpretar el estado de sitios perturbados, la respuesta a cambios impulsados por disturbios y la consecuente dinámica de una comunidad vegetal. La heterogeneidad en la formación del banco de semillas está influida por la latencia de estas, su tipo de dispersión y componentes del paisaje como topografía o vege...

Antecedentes: El noreste de México, estados de Coahuila, Nuevo León y Tamaulipas, constituye una región heterogénea que incluye sierras, planicies continentales y llanuras costeras con una infinidad de ambientes, substratos geológicos y gradientes altitudinales que favorecen la presencia de una rica biodiversidad. No existe una síntesis que documen...

In Linares, Nuevo León, Mexico, there is no record of the total number of species or the uses that people make of native plants. The purpose of this study was to know the species and their uses in the municipality of Linares, Nuevo León, Mexico. Based on 180 semi-structured interviews, collection, identification, and storage of botanical specimens,...

El presente estudio se llevó a cabo para evaluar el efecto de Lippia palmeri S. Watson y la sincronización de nutrientes de cuatro dietas para cabras criollas. Se utilizó un modelo de mediciones repetidas que evaluó las variables de producción de leche, consumo de alimento y conversión alimenticia. Se utilizaron tres cabras criollas por tratamiento...

New state records of species of the flat-backed millipede family Paradoxosomatidae (Diplopoda: Polydesmida) are made for Mexico: Akamptogonus novarae (Humbert and Saussure, 1869) is recorded for the state of Nuevo Leon; Asiomorpha coarctata (Saussure, 1860) is recorded for the states of Estado de Mexico, Nuevo Leon, Tamaulipas and Oaxaca; Chondromo...

Astragalus is the most diverse genus within flowering plants with almost 2500 species, it is widely distributed around the world, very abundant in temperate regions of the Northern Hemisphere, in central and western Asia, Turkey, Iran, and Afghanistan, central Asia, Europe, Mongolia, Siberia, northeastern China, and Japan. In the American continent...

Cliffs are unique ecosystems with an outstanding but relatively unknown plant diversity, harboring rare, endemic and threatened species, but also rock-specialist or generalist species that can become locally common and dominant on cliffs. The rising popularity of climbing represents an increasing threat to cliff biota, affecting community compositi...

We describe and illustrate Astragalus tijuanensis, morphologically related to Astragalus palmeri, and Astragalus brauntonii var. lativexillum as a new species and a new variety respectively from extreme northwestern Baja California, Mexico. Both new taxa were discovered growing on specialized clay soils in a recently burned chaparral habitat, both...

Fire has been a driver of biodiversity, succession, and vegetation dynamics by promoting a wide range of adaptive responses toparticulars fire regimes. The objective of this study was to estimate the recovery of the vegetation and determine if the fire had asignificant influence on the richness, diversity and distribution of the species, after 21 y...

Los ambientes semiáridos son dominados por condiciones extremas que influyen de manera directa en la dispersión y germinación de semillas, así como el establecimiento, desarrollo y mantenimiento de la cubierta vegetal. Este ciclo depende directamente de la disponibilidad del recurso hídrico. Sin embargo, en las zonas semiáridas el agua es limitada,...

Cliffs are unique ecosystems with an outstanding but relatively unknown plant diversity, harboring rare, endemic and threatened species, but also common and dominant species. The rising popularity of climbing represents an increasing threat to cliff biota, potentially diminishing diversity and species associations, and affecting the community compo...

Iturbide is in the northeast of Mexico and has a rich native and exotic flora; however, there are no ethnobotanical records, therefore, it requires attention in the documentation of traditional knowledge and practices of its botanical resources. In 2021, twelve field trips were carried out, applying 110 semi-structured interviews. Plant samples wer...

This study aimed to determine seasonal chemical composition, metabolizable energy (ME) concentration, in vitro gas production patterns, in vitro organic matter digestibility (IVOMD) and in vitro true organic matter digestibility (IVTOMD) of foliage from 5 native shrub species (Celtis pallida, Croton suaveolens, Forestiera angustifolia, Guaiacum ang...

En Nuevo León, México, se decretaron tres áreas naturales protegidas (ANP) para conservar a Cynomys mexicanus; sin embargo, las actividades agropecuarias continúan dentro de estas áreas, aunado a la carencia de información sobre la condición de su hábitat. En este estudio se evaluó la salud del pastizal y la producción de biomasa de las tres áreas...

Iturbide is located in the Northeast of Mexico, it has a rich native and exotic flora, however, there are no ethnobotanical records, therefore, it requires attention in the documentation of traditional practices and uses of its botanical resources. In 2021, twelve field trips were carried out, applying 110 semi-structured interviews. Plant samples...

Ethnopharmacological relevance: Urolithiasis is the presence of stones in the kidney, ureters, bladder and/or urethra; it is the third most frequent disease of the urinary tract. Mimosa malacophylla A.Gray, is a species distributed in northern Mexico, where people traditionally use it for its diuretic effect, and to treat kidney diseases; however,...

In the pine forests of Mexico, disturbances are primarily due to cattle, horses, goat, and sheep grazing, particularly in communal grazing lands. The most evident disturbances are low tree recruitment, invasive shrubs establishment, species composition changes, and invasion of weeds dispersed mainly by livestock. The Sierra de Zapalinamé is a mount...

Prairie dogs (Cynomys sp.) are considered keystone species and ecosystem engineers for their grazing and burrowing activities (summarized here as disturbances). As climate changes and its variability increases, the mechanisms underlying organisms' interactions with their habitat will likely shift. Understanding the mediating role of prairie dog dis...

We describe a new section (Astragalus sect. Rupertii A.E. Estrada, Villarreal & A.Delgado) from Mexico, its particular morphological features are, stipules free; calyx suboblong-urceolate to subglobose-urceolate, with subulate to triangular subulate teeth of the same size than tube; ovules 4; and pod 6-8 mm long, concealed by the calyx. The new sec...

La hojarasca que se acumula sobre el piso forestal y su posterior descomposición juegan un papel importante en el mantenimiento de la productividad de los diferentes ecosistemas terrestres al constituir el principal flujo de nutrientes al suelo. El objetivo del estudio fue evaluar la producción de hojarasca y retorno de nutrientes a través de la ca...

1. Prairie dogs (Cynomys sp.) are considered keystone species and ecosystem engineers for their grazing and burrowing activities (summarized here as disturbances). As climate changes and its variability increases, the mechanisms underlying organisms’ interactions with their habitat will likely shift. Understanding the mediating role of prairie dog...

Antecedentes: La Sierra Madre Oriental es una Provincia Fisiográfica ubicada en el noreste de México con características geológicas, climáticas y edáficas distintivas. La flora de esta región aún no ha sido inventariada en conjunto. Preguntas: ¿Cuál es la diversidad florística de la Provincia Fisiográfica de la Sierra Madre Oriental? ¿Cuál es la a...

We carried out two experiments to test the effect of temperature increase and distance to the edge of remnant vegetation on seedling emergence, speed of seedling emergence, and seedling species diversity from Tamaulipan thornscrub. We carried out one experiment during the dry period, and a second one in the rainfall season. For both experiments, we...

Background: Mentzelia (Loasaceae) is primarily distributed in western North America. The genus is classified into six monophyletic sections, among which species of section Bartonia are particularly poorly understood. Questions: What species of Mentzelia section Bartonia occur in Mexico? What are the species distribution ranges and what are their d...

Tribu Coreopsidineae de la familia Asteraceae comprende para Veracruz ocho géneros y 23 especies.

Background: Mentzelia (Loasaceae) is a genus of approximately 95 species that are largely distributed in western North America; however, much ambiguity remains regarding species in Mexico. Questions: What species of Mentzelia occur in Mexico and how can they be distinguished? Study species: Mentzelia Methods: Fieldwork, herbarium studies and sca...

Grazing is one of the most important land management activities worldwide, and cases of overgrazing increase erosion, land degradation, and plant invasion. The objective of this study was to assess the effect on individual species and species composition in response to groups of plants removals or grass seeding after four years of vegetation transf...

Background The cultural importance assigned to biodiversity is a complex subject, its study has been developed from ethnobotany and ethnomicology, mainly. A new proposal to address cultural importance is from the biocultural key species. Therefore, integrating information on the knowledge and use of various biological groups, the species with the g...

Background Cuatrociénegas, part of the Chihuahuan Desert, is a region of unique biological, geological, geographical, and evolutionary importance. Its current population is mestizo; nevertheless, it has high national historical, cultural, and touristic relevance in Mexico. It has been cataloged as nationally significant for its flora and fauna by M...

Antecedentes: La distribución de plantas depende de dispersores que transportan semillas a hábitats adecuados y de plantas que faciliten o inhiban germinación y establecimiento. Es importante conocer cómo estos factores influyen en la distribución de la vegetación y contemplar esta información en planes de manejo. Hipótesis: Las semillas y plántula...

Continuing with the study of the Astragalus of Mexico and based on the measurement of 30 morphological characters and applying multivariate statistics, the two varieties of Astragalus radicans: A. radicans var. radicans and A. radicans var. harshbergeri were ranked at the species level and have their nomenclature updated. The results of the analysi...

Background Cuatrociénegas is a region of unique biological, geological, geographical and evolutionary importance. It is part of the Chihuahua Desert, its current population is mestizo; however, it protects a high historical, cultural and tourist relevance. It has been listed as Area of Protection of Flora and Fauna by Mexican law, as well as a site...

Background Cuatrociénegas is a region of unique biological, geological, geographical and evolutionary importance. It is part of the Chihuahua Desert, its current population is mestizo; however, it has a high historical, cultural and tourist relevance. It has been cataloged as a Flora and Fauna by Mexican law, as well as a High Protection site by th...

The use of medicinal plants in Mexico has a diverse and deeply-rooted tradition concerning. Plants play an important role in traditional medicine among the inhabitants of Güémez, Tamaulipas in northeastern Mexico. With the aim of obtaining quantitative information on the plants and their uses as medicinal sources, semi-structured interviews with 11...

El objetivo del presente estudio fue determinar la composición florística del matorral sarcocaule del desierto sonorense en un área de 800 ha dentro de una propiedad ejidal ubicada en los límites de la ciudad de La Paz, Baja California Sur. El muestreo se realizó durante la época de lluvias (septiembre-noviembre de 2018) y a finales de la épocade s...

Knowledge about vegetation patterns along topographic gradients is crucial for conservation and management of arid islands. The objective of this study was to identify environmental, soil, and topography variables affecting plant distribution in Monserrat Island. A floristic and environmental survey was undertaken on this island (25o 41’ 00” N, 111...

This study was conducted to determine the monthly composition of the minerals Ca, P, K, Mg, Cu, Fe, Mn and Zn in five shrub species that are consumed by small ruminants in the semi-arid regions of northeastern Mexico. Leaves samples of shrub species; Celtis pallida, Croton suaveolens, Forestiera angustifolia, Guaiacum angustifolium and Parkinsonia...

We describe and illustrate Dalea rubriflora A.E. Estrada, J. Martínez-Ramírez, A. Mares & Ocampo as a new species from central Mexico. According to the morphology of its flower, this new species is included in a new section within subgenus Parosela because the shape of its keel, the innermost petals (which make the flower valvate) coherent along th...

Antecedentes: En el noreste de Coahuila el Altiplano desciende hacia la Llanura Costera de Coahuila y Nuevo León. En esta región la vegetación dominante es matorral espinoso tamaulipeco. Pregunta: ¿Cuál es la composición, estructura y riqueza de especies de plantas vasculares del matorral xerófilo en el norte de Coahuila? Especies de estudio y de...

Antecedentes y Objetivos: Pseudognaphalium es un género de la tribu Gnaphalieae (Asteraceae) segregado de Gnaphalium. Desde su separación en 1950, ha habido una serie de transferencias que cubren todos los taxones mexicanos. McVaugh describe Gnaphalium vulcanicum var. monticola y, posteriormente, Espinosa-García G. oxyphyllum var. nataliae. Ambos n...

We describe and illustrate Astragalus sagitticarpus A.E. Estrada, Villarreal & Encina (Fabaceae) as a new species from south-central Mexico. Its annual habit, free stipules, few leaves, small calyx teeth, and pendulous, persistent, stipitate, dorsoventrally compressed pod characterize this species. Added to other characteristics related to the othe...

Antecedentes: La sierra de Zapalinamé se localiza en la zona de transición entre la Sierra Madre Oriental y la Altiplanicie, donde convergen bosques de clima templado y matorral xerófilo. Pregunta: ¿Cuantos tipos de vegetación se presentan en la Sierra de Zapalinamé? ¿Cuáles son los agentes de cambio de la vegetación entre los años 1998 - 2017? E...

Una forma de probar los efectos del cambio ambiental sobre las comunidades vegetales es a través de la manipulación experimental que refleje escenarios climáticos futuros. Los bancos de semillas son el futuro potencial de la comunidad vegetal, sin embargo, son poco estudiados. En el presente estudio, probamos el efecto del incremento en la temperat...

El aumento en la temperatura y el efecto de borde son dos de las variables que pueden afectar la dinámica de las comunidades vegetales de manera negativa. Una de las formas de explorar estos efectos es con los bancos de semillas, ya que virtualmente estos son las generaciones futuras de las comunidades vegetales. En este estudio, probamos el efecto...

Ceanothus fernandezii is described as a new species in the subgenus Ceanothus from the Sierra Madre Occidental in the Mexican state of Durango. It differs from known species of Ceanothus for having rigid secondary branches with elliptic to ovate leaves with three veins at the base and a pubescent lower surface, white flowers and smooth fruit. Descr...

Sierra Rica is a mountain island located in the plains of the northeastern region of the Chihuahua Desert and has a diversity of vegetation patterns. To study this patterns the vegetation was characterized using GIS and cluster analysis, which identified five community types: pine forest (780 ha), oak forest (1640 ha), grassland (550 ha), desert sc...

Two new species of Fabaceae, Astragalus comonduensis from A. sect. Inflati and Calliandra pilocarpa from C. sect. Androcallis are described and illustrated. Both species are endemic to the state of Baja California Sur. Distribution, associated vegetation, rarity of observation, affinities to other related species, botanical illustrations, and vario...

Two new species of Fabaceae, Astragalus comonduensis from A. sect. Inflati and Calliandra pilocarpa from C. sect. Androcallis are described and illustrated. Both species are endemic to the state of Baja California Sur. Distribution, associated vegetation, rarity of observation, affinities to other related species, botanical illustrations, and vario...

Las arañas son organismos depredadores que por ser pequeños y fáciles de detectar resultan ideales para la realización de estudios de variación ambiental y disturbio. Se estudiaron 45 comunidades de arañas en dos grandes montañas del noreste de México: el cerro El Potosí, en el sur de Nuevo León; y Peña Nevada, en el sur de Tamaulipas. Se determinó...

El bosque mesófilo de montaña en la Reserva de la Biósfera El Cielo se localiza cerca de su límite de distribución boreal. Las plantas epífitas son un componente importante de la biodiversidad de estos bosques, aunque son poco estudiados. En este trabajo se estudiaron las epífitas vasculares en un gradiente altitudinal, y se determinó su preferenci...

The objective of this study was to investigate the influence of environmental and soil factors on the structure and floristic woody composition of oak forests. Oak forests of the Sierra de Zapalinamé in northeastern Mexico (25°N) are distributed in canyons and northwest slopes with higher humidity, surrounded by montane chaparral. We carried out a...

More than 50% of the Mexican flora is represented by 11,001 species of endemic vascular plants. These high levels of endemisms should be a primal criterion for the recognition of areas for conservation. However, it is unknown whether the current network of protected areas guarantees the conservation of endemic vascular plant species. We focused in...

The Sierra del Rosario is a calcareous mountainous area located in the northeast region of the state of Durango, where xerophilous vegetation and chaparral predominate. The aim of this study was to determine cactus diversity and distribution in the region. A list of cacti was obtained from 15, 3 km transects covering the vegetation of microphyllous...

La percepción de estudiantes de las carreras profesionales del estado de Nuevo León con mayor población estudiantil de las ocho áreas del conocimiento consideradas por la Asociación Nacional de Universidades e Instituciones de Educación Superior (ANUIES) fue evaluada sobre la belleza del paisaje del Monumento Natural Cerro de la Silla (MNCS), símbo...

Antecedentes: El conocimiento taxonómico y florístico de las plantas vasculares del norte de México presenta avances relevantes, aunque disgregados. Por lo anterior, es crítico hacer un diagnóstico para definir estrategias que los unifiquen y complementen. Preguntas: ¿cuál es la riqueza y endemismo de las plantas vasculares en el norte de México?,...

Studies on litterfall and decomposition provide estimations of decomposition rates of different ecosystems. This is key information to understanding ecosystem dynamics and changes in a scenario of global warming. The objective of this research was to assess litterfall production, the potential deposition of macro and micronutrients through leaf and...

El objetivo de este estudio consistió en evaluar los cambios en la estructura y composición florística del matorral desértico micrófilo a partir de la aplicación de una técnica de restauración ecológica y la ocurrencia de incendios naturales en diferentes periodos en el Desierto Chihuahuense. Mediante cinco tratamientos (testigo (MDMt), rodillo air...

Aim of the study: To analyze the impact of the 1998 wildfire on dwarf pine (Pinus culminicola) population stands 18 years after the fire. Area of study: Cerro el Potosí, Nuevo León (México) Material and methods: We measured regeneration, biovolume of individuals, diversity and species composition in unburned and burned plots randomly selected in...

To aid in formulating conservation strategies for protection of species in mountainous regions, we studied the distribution of endemic vascular plants of northeastern Mexico’s Sierra Madre Oriental physiographic province, a massive mountain system in which different types of climate, vegetation, topography, and sedimentary soil converge. The inform...

El borrego cimarrón del desierto (Ovis canadensis) es una especie con una distribución espacial restringida, debido a que requiere de características específicas de hábitat que le provean agua, alimento, cobertura y espacio; factores determinantes en la selección de sitios de distribución. O. c. weemsi tiene el estatus de especie Sujeta a Protecció...

Es una compilación de datos de plantas arbustivas y arboreas de algunas áreas de Nuevo León.

Antecedentes y Objetivos: El objetivo del presente estudio fue conocer la flora y describir la vegetación del municipio Álamo Temapache, en el estado de Veracruz, México. El área está ubicada en el norte del estado y ocupa una extensión de 1280.62 km². Métodos: Se delimitó la zona y se definieron rutas de colecta y reconocimiento de los tipos de v...

We assessed the changes generated in the structure and diversity of rosetophyllous desert scrubland vegetation applying habitat rehabilitation techniques with aerator roller in the years 2004, 2008 and 2011 and an area burned naturally. In 5 treatments: control (MDRt), aerator roller applied in 2004 (RA04), 2008 (RA08), 2011 (RA11) and burned area...

The genus Lonicera (Caprifoliaceae), with almost 200 species, is distributed in temperate and subtropical regions of the North Hemisphere. In Mexico, the genus has seven species and one in Guatemala, four endemic and one naturalized. This paper is a revision of the genus in Mexico and Guatemala; it includes a morphometric study, key to identify the...

Microphyllous and rosetophyllous desert scrub plant communities dominate large parts of the state of Coahuila, Mexico, yet differences in how livestock grazing impacts these two plant communities are not well documented. In order to address this knowledge gap, we assessed livestock impact on plant species composition and vegetation structure in mic...

Microphyllous and rosetophyllous desert scrub plant communities dominate large parts of the state of Coahuila, Mexico, yet differences in how livestock grazing impacts these two plant communities are not well documented. In order to address this knowledge gap, we assessed livestock impact on plant species composition and vegetation structure in mic...