Phyllanthus fluitans (Phyllanthaceae): a new record of an aquatic plant for the flora of Panama Authors: Ibáñez García, Alicia, Flores, Rodolfo

“…It occurs in South American wetlands and has also been reported in Mexico, where it is considered non-native. It is used as an aquarium plant and has escaped cultivation in Florida (USA). …”

Effect of altitude, slope and geographic exposure on tree fern distribution Authors: Antúnez, Pablo, López-Serrano, Pablito Marcelo, González-Adame, Gabriel, Rubio Camacho, Ernesto Alonso, Mendoza-Díaz, María Magdalena

“…The objective was to examine the distribution pattern of four tree fern species in function of elevation above sea level, exposure, and slope along an altitudinal continuum.Methods: The effect of altitude, slope and geographic exposure on the distribution of Alsophila firma, Cyathea bicrenata, Cyathea myosuroides and Sphaeropteris horrida was studied in La Chinantla, northern Oaxaca, Mexico. The hypothesis of homogeneity of proportions to the change of topographic factors was verified by the Chi square test and the degree of incidence with polynomial functions.Key results: Significant differences between the proportions of each species as a function of each topographic variable were observed. …”

Pollen phenols of the genus Zea Authors: Almaraz-Abarca, Norma, Rivera-Rodríguez, Diana María, Arráez-Román, David, Segura-Carretero, Antonio, Sánchez-González, José de Jesús, Delgado-Alvarado, Amanda, Ávila-Reyes, José Antonio

“…The variability of the pollen phenol composition of 32 populations of Zea mays subsp. mexicana, Zea mays subsp. parviglumis, Zea mays subsp. mays, Zea diploperennis, Zea perennis, and Zea luxurians from Mexico and Guatemala were analyzed. The phenol profiles were assessed by HPLC-DAD, and UPLC-TOF-MS. …”

Reassessment of the extinction risk of five species of the genus Polianthes L. (Agavaceae) Authors: Feria-Arroyo, Teresa Patricia, Solano, Eloy, García-Mendoza, Abisaí

“…We reassessed the extinction risk of the species Polianthes densiflora, P. howardii, P. longiflora, P. palustris and P. platyphylla by applying the MER (method of evaluation of extinction risk of wild species for Mexico). These species are listed as rare by the International Union for Conservation of Nature (IUCN) and are considered to be in the category of special protection according to Mexican regulation. …”

Obtention of intergeneric hybrids Helianthus annuus x Tithonia rotundifolia and their morphological and molecular analysis Authors: Luévanos-Escareño, Miriam Paulina, Reyes-Valdés, M. Humberto, Villarreal-Quintanilla, José Ángel, Rodríguez-Herrera, Raúl

“…The male parent was a T. rotundifolia population collected in the state of Guerrero, Mexico. A total of 826 well developed hybrid achenes were produced, with a rate of success of four in 1000 potential achenes. …”

Efficient induction of adventitious shoots in cotyledons of Pinus maximartinezii Rzedowski Authors: Robledo Paz, Alejandrina, Villalobos Arámbula, Víctor Manuel, Santacruz Varela, Amalio

“…Pinus maximartinezii Rzedowski is a nut pine native to Mexico that currently is considered as an endangered species because of disturbance of populations and natural habitat, as well as its limited geographic distribution. …”

Coyote herb, dog poison: Lexical evidence for plant identification in the Codex de la Cruz Badiano Authors: de Ávila Blomberg, Alejandro

“…This line of research, which relates Mexico’s natural history to the traditional medicine and material culture of indigenous peoples, may provide new clues to clarify the early history of Mesoamerican civilization. …”

Distribution and conservation of natural populations of Pinus greggii Authors: Ramírez-Herrera, C., Vargas-Hernández, J. J., López-Upton, J.

“…Pinus greggii Engelm. is endemic to eastern Mexico and of great ecological and economic importance. …”

Spatial modeling of basal area and tree volume in managed Pinus patula and P. teocote forests in the ejido Atopixco, Hidalgo Authors: Cruz-Leyva, Isidro Ahmed, Valdez-Lazalde, José René, Ángeles-Pérez, Gregorio, de los Santos-Posadas, Héctor Manuel

“…Basal area (AB m2/ha) and tree volume (VOL m3/ha) were modeled for even-aged Pinus patula and P. teocote forest stands located in Hidalgo, Mexico. Variables such as tree crown cover (COB), field recorded Leaf Area Index (LAI5 m2/m2), allometric Leaf Area Index (LAIAL m2/m2) ; GIS variables and reflectance data derived from a multispectral SPOT 5  image were used as independent variables. …”

Anatomy, hydraulic and physical indexes of Gliricidia sepium (Jacq.) Steud. wood Authors: Quintanar-Isaías, Alejandra, Ángeles, Guillermo, Zavala-Hurtado, José Alejandro

“…Steud. was carried out using six trees collected during the rainy and dry seasons in a dry forest from Veracruz, México. Stem segments were cut at 1,30 m above the ground for obtaining wood samples for macroscopic and microscopic observations, and for the water content and specific gravity analyses. …”

The abiotic factors effects on the development of primary roots, growth and survival of Rhizophora mangle L. propagules Authors: Febles-Patrón, José Luis, Novelo López, Jorge, Batllori Sampedro, Eduardo

“…An experiment was made to know the abiotic factors effect on the development of primary roots, growth and survival of red mangrove propagules (Rhizophora mangle L.). 180 propagules were collected at the Santa Clara swamp, in the North coast of Yucatan, Mexico, forming 6 groups of 30 individuals. Propagules were placed in orifices of a white exponded polyestirene sheet, maintaining them during 48 days in plastic containers, with a vertical position and with hipocotil immersed in water. …”

Germinación y establecimiento de plantas nativas del matorral tamaulipeco y una especie introducida en un gradiente de elevación Authors: García Pérez, Jaime F., Calderón, Óscar Aguirre, Estrada Castillón, Eduardo, Flores Rivas, Joel, Jiménez Pérez, Javier, Jurado Ybarra, Enrique

“…Germination and growth of four plant species were evaluated from 90 to 1960 m above sea level, with the aim to determine whether global warming could influence growth at higher elevations in northeastern Mexico. Three native species (Cordia boissieri, Ebenopsis ebano and Caesalpinia mexicana) and a naturalized species (Melia azederach) were tested. …”

Especies nativas del matorral espinoso del noreste mexicano con posibilidades de aprovechamiento industrial Authors: Rechy Carvajal, María de los Ángeles, Roth Rechy, Emil von

“…This paper presents research results on the microscopical anatomy and physical-mechanical properties of four brushwood species typically found in Northeastern Mexico, with the purpose of expanding the possibility of their commercial use. …”

Nut size and color and shade affect germination of Quercus deserticola Authors: Rodríguez-Trejo, Dante Arturo, Pompa-García, Marín

“…Mexico is the country with the highest number of Quercus species worldwide (157). …”

Posibilidades financieras de diversificación en cafetales mexicanos Authors: Sosa M., Arminda, Mendoza B., Martín Alfonso

“…Analyses assume free input and products markets, fair real values, as of spring 1995 in Mexico, and a private real discount rate (estimated at 5%). …”

Evaluation of allometric equations of aboveground biomass in a semideciduous tropical forest of Yucatan Authors: Ramírez Ramírez, Gustavo, Dupuy Rada, Juan Manuel, Ramírez y Avilés, Luis, Solorio Sánchez, Francisco Javier

“…The objectives of this study were to develop and compare allometric equations of aboveground biomass (AGB) for a semi-deciduous tropical forest of the ejido (system of communal or cooperative farming) San Agustin, Yucatan, Mexico, and to compare them to existing equations. …”

Stored carbon in the aboveground biomass of rubber (Hevea brasiliensis Müell. Arg.) plantations at different ages Authors: López-Reyes, Liliana Y., Domínguez-Domínguez, Marivel, Martínez-Zurimendi, Pablo, Zavala-Cruz, Joel, Gómez-Guerrero, Armando, Posada-Cruz, Saúl

“…The objective of this study was to determine the stored carbon in the whole aboveground biomass in 5, 9, 15, 25, 32 and 51-year-old plantations, through a forest inventory and the use of allometric equations in Tabasco, Mexico. The stored carbon was determined using linear regression and mean values were analyzed by the Tukey test (p < 0.05) with the Statistical Analysis System (SAS) program. …”

Fuelwood use and availability in “La Montaña” region in the state of Guerrero and their implications in the environmental unity Authors: Salgado Terrones, Omar, Borda Niño, Mónica Lorena, Ceccon, Eliane

“…“La Montaña” region, in Guerrero state, in Southern Mexico, shows high poverty and deforestation rates. …”

Normal diameter, height and volume predictions of Abies religiosa from stump diameter Authors: García Cuevas, Xavier, Hernández Ramos, Jonathan, García Magaña, J. Jesús, Hernández Ramos, Adrián, Herrera Ávila, Victorino, González Peralta, Alfredo, Garfias Mota, Enrique Jonathan

“…Therefore, the aim was to adjust equations that describe the normal diameter, height and volume as a function of the diameter of the tree stump of Abies religiosa (Kunth) Schltdl. et Cham. in Tancítaro, Michoacan, Mexico. Through sampling of 71 sites and 1745 data pairs dt-d, dt-h and dt-v; including all diametric and heights categories. …”

Modeling anthropic factors as drivers of wildfire occurrence at the Monarch Butterfly Biosphere Authors: Farfán Gutiérrez, Michelle, Pérez-Salicrup, Diego R., Flamenco-Sandoval, Alejandro, Nicasio-Arzeta, Segio, Mas, Jean-François, Ramírez Ramírez, Isabel

“…Fire regimes in coniferous forests in Central Mexico have been severely disturbed by land use change and fire management activities. …”