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Search Results: 1 - 10 of 219204 matches for " Eduardo Estrada-Castillón "
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Flora del centro del estado de Chihuahua, México
Estrada-Castillón, Eduardo;Villarreal-Quintanilla, José ángel;
Acta botánica mexicana , 2010,
Abstract: in the central area of the state of chihuahua, 135 feld trips for collecting almost 6500 plant specimens were made in six years. a herbaria and bibliographic review and a study of the flora of the plains and low hills was also carried out. we recorded 112 families, 493 genera, 1322 species, and 232 infraspecific taxa of vascular plants. of the total families, 87 were dicotyledons, 15 monocotyledons, 7 ferns and allies, and 3 conifers and allies. the families with highest number of genera and species were: asteraceae (86, 235), poaceae (50, 163), leguminosae (45, 137), brassicaceae (16, 25), malvaceae (12, 29), scrophulariaceae (11, 29), cactaceae (10, 30), verbenaceae (10, 24), nyctaginaceae (7, 21) and amaranthaceae (7, 18). the genera with highest number of species were: muhlenbergia (37), dalea (22), euphorbia (21), cheilanthes (19), brickellia (17), salvia (15), cyperus (14), quercus (13), solanum (12), eragrostis (12), bouteloua (12), erigeron (12), astragalus (11), ipomoea (11), plantago (10), acacia (10), machaeranthera (9), stevia (9), opuntia (9), aristida (9), asclepias (9), phaseolus (9), oenothera (9), viguiera (9) and notholaena (9). the present study is a contribution to the knowledge of plant diversity in the arid lands of northern mexico.
FLORA DEL CENTRO DEL ESTADO DE CHIHUAHUA, MéXICO
Eduardo Estrada-Castillón,José ángel Villarreal-Quintanilla
Acta botánica mexicana , 2010,
Abstract: Se estudió la flora de las serranías y planicies de la porción central del estado de Chihuahua. Se realizaron 135 salidas de campo en un periodo de seis a os, en los que se colectaron aproximadamente 6500 ejemplares botánicos, se recopiló la información bibliográfica sobre el tema y se revisó el material botánico de la región de estudio depositado en los herbarios ANSM, CFNL y TEX-LL. Se registró un total de 112 familias, 493 géneros, 1322 especies y 232 categorías infraespecíficas de plantas vasculares. Del total de familias, 87 corresponden a dicotiledóneas, 15 a monocotiledóneas, 7 a helechos y afines, y 3 a coníferas y afines. Las familias con mayor número de géneros y especies respectivamente son: Asteraceae (86, 235), Poaceae (50, 163), Leguminosae (45, 137), Brassicaceae (16, 25), Malvaceae (12, 29), Scrophulariaceae (11, 29), Cactaceae (10, 30), Verbenaceae (10, 24), Nyctaginaceae (7, 21) y Amaranthaceae (7, 18). Los géneros con mayor número de especies son Muhlenbergia (37), Dalea (22), Euphorbia (21), Cheilanthes (19), Brickellia (17), Salvia (15), Cyperus (14), Quercus (13), Solanum (12), Eragrostis (12), Bouteloua(12),Erigeron(12), Astragalus (11), Ipomoea (11), Plantago (10), Acacia (10), Machaeranthera (9), Stevia (9), Opuntia (9), Aristida (9), Asclepias (9), Phaseolus (9), Oenothera (9), Viguiera (9) y Notholaena (9). El presente estudio es una contribución hacia un mejor conocimiento de la diversidad vegetal que existe en las regiones áridas del norte de México.
El género Gentiana (Gentianaceae) en México
Villarreal-Quintanilla, José A.;Estrada-Castillón, A. Eduardo;Jasso de Rodríguez, Diana;
Polibotánica , 2009,
Abstract: the genus gentiana (gentianaceae), distributed in temperate and cold regions of the northern hemisphere, is represented in mexico by 13 species plus one subspecies. most of these are endemic, with only two also registered from guatemala. a synopsis of the genus in mexico is presented, including a key for the identification of the species, descriptions, and ecological and distributional information.
Clasificación de los pastizales halófilos del noreste de México asociados con perrito de las praderas (Cynomys mexicanus): diversidad y endemismo de especies Classification, diversity and plant endemism in the halophytic grasslands in northeastern Mexico associated to prairie dogs (Cynomys mexicanus)
Eduardo Estrada-Castillón,Laura Scott-Morales,José A. Villarreal-Quintanilla,Enrique Jurado-Ybarra
Revista mexicana de biodiversidad , 2010,
Abstract: Se clasifican 39 áreas de pastizal halófilo del noreste de México con el objetivo de cuantificar la diversidad, superficie e impacto debido al manejo antrópico al que están sometidas. La cobertura, densidad, frecuencia y diversidad de las especies se cuantificaron al menos en 200 cuadrantes de 1 m2 en cada área de pastizal. La información se analizó mediante índices de similitud de S rensen, coeficientes de correlación cofenético, análisis de conglomerados, índice de diversidad de Shannon-Wiener y pruebas de Kruskall-Wallis. Se registraron 53 familias, 174 géneros y 284 especies de plantas vasculares; 17 especies son endémicas en estos pastizales. Las áreas de pastizal con manejo pastoreo-agricultura poseen mayor diversidad de especies, mayor abundancia de malezas y menor abundancia de endémicas. Las áreas con manejo de pastoreo, poseen menor diversidad de especies, menor abundancia de malezas y mayor densidad de especies endémicas. La agricultura mecanizada es la principal causa de pérdida de pastizal halófilo y del hábitat del perro de las praderas. La pérdida total de pastizal halófilo en el noreste de México fue de 71.5% de su superficie hasta el a o 2007. The objective of this study was to classify the vegetation, to quantify the plant diversity, currently occupied surface and the impact in vegetal diversity in the 39 halophytic grassland areas in northeastern Mexico due to management activities. Canopy cover, density, frequency, and species diversity was quantified in at least 200 1 m2 quadrats in each of the 39 grassland areas. Information and field data were analyzed by means of S rensen Similarity Index, cophenetic correlation coefficient, cluster analysis, Shannon-Wiener diversity index, product moment correlation coefficient, and Kruskall-Wallis test. Grazing-agriculture areas have the highest plant diversity, higher weeds density, lower endemic species abundance. Grazing areas have lower plant diversity, lower weed abundance and higher endemic plants abundance. Mechanized agriculture is the main cause of loss of halophytic grasslands and prairie dog habitat. In this study 53 families, 174 genera and 284 species of vascular plants were recorded. Total lost of halophytic grassland in northeastern Mexico is about 75% of its surface until the year 2007.
Medicinal plants in the southern region of the State of Nuevo León, México
Estrada-Castillón Eduardo,Soto-Mata Brianda,Garza-López Miriam,Villarreal-Quintanilla José
Journal of Ethnobiology and Ethnomedicine , 2012, DOI: 10.1186/1746-4269-8-45
Abstract: Background Although the flora of the State of Nuevo León is well known, there are few records of ethnobotancial information. An ethnobotanical study was undertaken in order to know the medicinal plants used by people living at the scrublands and oak-pine forest areas in the southern Nuevo León. Collection of plants specimens and interviews were carried out among the people of the municipalities of Aramberri, Galeana, and Zaragoza. Since former studies in the region are scarce, the aim of this work was to record the medicinal species and their uses in the scrublands and oak-pine forest areas, of southern Nuevo León, Mexico, and also to know if there are differences in the number of species and number of uses knowledge by people. Methods Field work was carried out over a 2 years period; useful plants were collected and a total of 105 people from 46 different villages were interviewed. A database was compiled using data collected by means of semi structured interviews. The data were analyzed by means of non-parametric statistics, using goodness-of-fit test (Chi-squared) (number of species known by people of each municipality, number of uses known by people of each municipality), Chi-squared modified to incorporate the Yates Correction (number of species known by people living at scrublands and oak-pine forest); the Kruskall-Wallis test (number of species known by women and men of the three municipalities), and the Spearman’s rank correlation coefficient (age and number of species known, and age and number of uses). Results A total of 163 medicinal plant species were recorded in the study area, comprising 108 wild and 55 cultivated plants. A total of 117 species were recorded in the oak-pine forest, and 111 in the scrublands area, a total of 68 were recorded in both areas; 68 medicinal species are used in all three municipalities, 40 wild and 28 cultivated. We documented 235 different medicinal uses. The most common plant parts used for medicinal purposes were found to be leaves (123 species), stems (55), fruits (28), roots (17), and bark (14). No differences were noted in the number of medicinal plant species identified among people, but differences were significant in their knowledge with respect to the number of uses among people of the three municipalities studied; people from both, scrublands and oak-pine forest know similar number of species and number of uses. Men and women of the three different municipalities knew statistically the same number of species and number of uses. There was no correlation between resident’s age and number of species known
Clasificación de los pastizales halófilos del noreste de México asociados con perrito de las praderas (Cynomys mexicanus): diversidad y endemismo de especies
Estrada-Castillón, Eduardo;Scott-Morales, Laura;Villarreal-Quintanilla, José A.;Jurado-Ybarra, Enrique;Cotera-Correa, Mauricio;Cantú-Ayala, César;García-Pérez, Jaime;
Revista mexicana de biodiversidad , 2010,
Abstract: the objective of this study was to classify the vegetation, to quantify the plant diversity, currently occupied surface and the impact in vegetal diversity in the 39 halophytic grassland areas in northeastern mexico due to management activities. canopy cover, density, frequency, and species diversity was quantified in at least 200 1 m2 quadrats in each of the 39 grassland areas. information and field data were analyzed by means of s?rensen similarity index, cophenetic correlation coefficient, cluster analysis, shannon-wiener diversity index, product moment correlation coefficient, and kruskall-wallis test. grazing-agriculture areas have the highest plant diversity, higher weeds density, lower endemic species abundance. grazing areas have lower plant diversity, lower weed abundance and higher endemic plants abundance. mechanized agriculture is the main cause of loss of halophytic grasslands and prairie dog habitat. in this study 53 families, 174 genera and 284 species of vascular plants were recorded. total lost of halophytic grassland in northeastern mexico is about 75% of its surface until the year 2007.
Cambios de rango taxonómico y nuevas combinaciones nomenclaturales en tres compuestas mexicanas
Villarreal-Quintanilla, José á.;Estrada-Castillón, Andrés E.;
Acta botánica mexicana , 2010,
Abstract: acourtia dugesii (a. gray) reveal & r. m. king var. veracruzana (b. l. turner) villarreal & a. e. estrada, acourtia dugesii (a. gray) reveal & r. m. king var. queretarana (b. l. turner) villarreal & a. e. estrada and chaptalia lyratifolia burkart var. estribensis (g. l. nesom) villarreal & a. e. estrada, are proposed as taxonomic rank changes and new nomenclatural combinations for three mexican taxa of compositae.
CAMBIOS DE RANGO TAXONóMICO Y NUEVAS COMBINACIONES NOMENCLATURALES EN TRES COMPUESTAS MEXICANAS
José á. Villarreal-Quintanilla,Andrés E. Estrada-Castillón
Acta botánica mexicana , 2010,
Abstract: Se proponen tres nuevas combinaciones nomenclaturales en compuestas mexicanas, consideradas como necesarias para ajustar el rango taxonómico de: Acourtia dugesii (A. Gray) Reveal & R. M. King var. veracruzana (B. L. Turner) Villarreal & A. E. Estrada, Acourtia dugesii (A. Gray) Reveal & R. M. King var. queretarana (B. L. Turner) Villarreal & A. E. Estrada y Chaptalia lyratifolia Burkart var. estribensis (G. L. Nesom) Villarreal & A. E. Estrada.
Leguminosas del norte del estado de Nuevo León, México
Eduardo Estrada Castillón,José ángel Villarreal Quintanilla,Enrique Jurado
Acta botánica mexicana , 2005,
Abstract: Se estudió la diversidad de especies de leguminosas en el norte del estado de Nuevo León, contabilizando 98 taxa en total. Se registraron 38 géneros, 94 especies y 26 taxa infraespecíficos de este grupo de plantas; la familia Fabaceae comprende 18 géneros y 42 especies, Mimosaceae 10 y 30 y Caesalpiniaceae 10 y 22 respectivamente. Los géneros con mayor número de especies son Acacia (12), Dalea (10), Mimosa (6), Senna (5); Caesalpinia (4) y Bauhinia (4). Del total de 98 taxa, las leguminosas arbustivas y herbáceas son las más abundantes en la zona, representando 47% (46 especies) y 46% (45 especies) respectivamente, las arbóreas representan 7% (7). La mayor cantidad de taxa se registró en el matorral subinerme (52), matorral submontano (48) y bosque de encino-pino (44), mientras que los mezquitales albergan el menor número de especies (23).
Agave albopilosa (Agavaceae, subgénero Littaea, grupo Striatae), una especie nueva de la Sierra Madre Oriental en el noreste de México
Ismael Cabral Cordero,José ángel Villarreal Quintanilla,Eduardo A. Estrada Castillón
Acta botánica mexicana , 2007,
Abstract: Se propone como especie nueva a Agave albopilosa, un maguey peque o rupícola del grupo Striatae, de la Sierra Madre Oriental. Su característica más sobresaliente es un mechón circular de pelos blancos en la porción distal de las hojas, justo debajo de la espina terminal. Las flores son ligeramente campanuladas, similares a las de A. stricta, pero con lóbulos más cortos y también los frutos son más peque os. Se incluye una ilustración de la planta y una clave para la separación de las especies del grupo.
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