scholarly journals Wood anatomy of Magnolia rzedowskianaVázquez, Domínguez & Pedraza, endemic species of the Sierra Madre Oriental, Mexico

2021 ◽  
Vol 28 (1) ◽  
pp. 139-154
Author(s):  
Liliana Cuapio-Hernández ◽  
◽  
Arturo Sánchez-González ◽  
Numa P. Pavón-Hernández ◽  
Maritza López-Herrera ◽  
...  

Introduction: Magnolia rzedowskianaVázquez, Domínguez & Pedraza is a tree species endemic to the cloud forest of the Sierra Madre Oriental; its scanty (distributed) and isolated populations are considered at danger of extinction.Objective: To describe the microscopic anatomical characteristics of M. rzedowskiana wood to contribute to the biological knowledge of this species.Materials and methods: Wood samples were determined by a non-destructive method, extracting two growth cores from five adult trees in each of the four sampling sites located in Chilijapa and Zotictla in Hidalgo, La Yesca in Querétaro and ejido La Trinidad in San Luis Potosí. Cores were sectioned into subsamples to elaborate fixed preparations from tangential, transversal and radial cuts. Characteristics were identified using an optical microscopy and described according to IAWA (International Association of Wood Anatomists) criteria.Results and discussion: Growth zones, diffuse porosity, solitary and multiple radial pores in intermediate arrangement between radial and tangential; scalariform perforation plate and libriform fibers; diffuse and scanty paratracheal and apotracheal axial parenchyma; biseriate rays combined with triserial, uniseriate and heterocellular rays composed of procumbent cells with a row above and below of marginal square cells with oil bodies. The wood is distinguished by mesomorphism and resistance to drought.Conclusion: The anatomical description of M. rzedowskiana is a contribution to biological knowledge. From an economic point of view, this wood has potential use to produce pulp for paper.

2017 ◽  
pp. 101
Author(s):  
Rafael Mayorga-Saucedo ◽  
Isolda Luna-Vega ◽  
Othón Alcántara-Ayala

The cloud forest of Molocotlán indudes part of two municipalities of the Hidalgo State, Molango and Xochicoatlán, and is located in the Huasteca region in the Sierra Madre Oriental. Arboreal vegetation is divided in three vertical strata: high (20-30 m), medium (8-20 m) , and lower (2 -8 m). The flora of the area includes 391 species, 270 genera, and 112 families. Genera are grouped according to their present distribution in six categories; a high percentaje of them are exclusively American.


2013 ◽  
Vol 73 (3) ◽  
pp. 392-398
Author(s):  
Aurelio Ramírez-Bautista ◽  
Christian Berriozabal-Islas ◽  
Raciel Cruz-Elizalde ◽  
Uriel Hernández-Salinas ◽  
Luis Badillo-Saldaña

2018 ◽  
Vol 15 (10) ◽  
pp. 2136-2147 ◽  
Author(s):  
Edgar G. Leija-Loredo ◽  
Numa P. Pavón ◽  
Arturo Sánchez-González ◽  
Rodrigo Rodriguez-Laguna ◽  
Gregorio Ángeles-Pérez

2002 ◽  
Vol 58 (2) ◽  
pp. 122-129 ◽  
Author(s):  
Maria Elena Conserva ◽  
Roger Byrne

AbstractPast vegetation and climate changes reconstructed from a sediment core from Laguna Atezca, Molango, Mexico, provide new insights into the environmental and cultural histories of the Sierra Madre Oriental during the last 1700 yr. Pollen, microscopic charcoal, sediment chemistry, loss on ignition, and magnetic susceptibility indicate that three phases of human occupation, deforestation, and erosion (ca. A.D. 280–890, ca. A.D. 1030–1420, and ca. A.D. 1680–present) alternate with two phases of abandonment (ca. A.D. 890–1030 and ca. A.D. 1420–1680). Forest composition of the two abandonment phases differed, with cloud forest taxa (Liquidambar, Ostrya/Carpinus, Ulmus, etc.) dominating the pollen record during the first phase, and Quercus and Pinus pollen characterizing phase two. These differences may reflect a climate change in which the second phase was drier than the first; Alternatively, the increase in Pinus and Quercus may have been caused by a human-induced decline in soil fertility. The Laguna Atezca record also differs from several other Mesoamerican paleoenvironmental records in that it shows no evidence of drought at the end of the Classic Period, ca. A.D. 900.


Mycotaxon ◽  
2021 ◽  
Vol 136 (1) ◽  
pp. 97-106
Author(s):  
Tania Raymundo ◽  
Ricardo Valenzuela

Smardaea isoldae is described from Sierra Madre Oriental, Hidalgo State, Mexico. The new species is distinguished by its olivaceous coloration, habit on dead wood, and tropical cloud forest habitat. The holotype is deposited in ENCB Herbarium. A key to Smardaea species is presented.


2008 ◽  
Vol 12 (1) ◽  
pp. 59 ◽  
Author(s):  
Barbara Vargas-Miranda ◽  
José Ramírez-Pulido ◽  
Gerardo J. Ceballos González

RESUMEN:  En este trabajo se listan 60 especies, 58 previamente conocidas más Pteronotus personatus y Myotis yumanensis que se agregan como nuevos registros.  De éstas, sólo examinamos 53 de seis familias: dos embalonúridos (3.8%), cuatro mormópidos (7.6%), 26 filostómidos (50.0%), tres molósidos (5.7%), 17 vespertiliónidos (32.7%) y un natálido (1.9%).  La mayor diversidad de murciélagos (64.2%) se encontró en la Sierra Madre Oriental y el 59 % en el bosque mesófilo de montaña.  Las 142 localidades de los ejemplares examinados se ubican entre los 100 y 3,200 m, y la riqueza y diversidad de especies disminuyen conforme aumenta la altitud.  Glossophaga morenoi, Artibeus hirsutus, Corynorhinus mexicanus, Rhogeessa alleni y R.  gracilis son endémicas de México, y pueden ser encontradas en el Estado de Puebla.  Por otro lado, Choeronycteris mexicana, Leptonycteris curasoae, Leptonycteris nivalis, Enchisthenes hartii y Myotis albescens se encuentran en la Norma Oficial Mexicana en alguna categoría de riesgo.PALABRAS CLAVE:  fauna de murciélagos, tipos de vegetación, regiones mastofaunisticas, intervalos altitudinales, Puebla, México, Chiroptera.ABSTRACT:  In this work we present a list of 60 species, 58 previously known plus Pteronotus personatus and Myotis yumanensis which are added as new registers.  From them, we examinated 53 of six families: two embalonurid (3.8 %), four mormopid (7.6%), 26 filostomid (50.0%), three molosid (5.7%), 17 vespertilionid (32.7%) and one natalid (1.9%).  Higher diversity of bats (64.2%) was found in Sierra Madre Oriental, and 59% were taken from Cloud forest.  The 142 localities of reviewed samples are located between 100 and 3200 m, and richness and diversity decrease as highness increase.  Glossophaga morenoi, Artibeus hirsutus, Corynorhinus mexicanus, Rhogeessa alleni and R.  gracilis are endemic from México, and can be found in Puebla.  In the other hand, Choeronycteris mexicana, Leptonycteris curasoae, Leptonycteris nivalis, Enchisthenes hartii and Myotis albescens can be found on Norma Oficial Mexicana included in some category of risk.KEY WORDS: bats, types of vegetations, regions, altitudinal levels, Puebla, Mexico, Chiroptera.


2016 ◽  
Vol 32 (3) ◽  
Author(s):  
Octavio León Martínez-Vaca León ◽  
Edgar Ahmed Bello-Sánchez ◽  
Jorge E. Morales-Mávil

We present new records to the geographical distribution of Emerald Horned Pitviper Ophryacus smaragdinus, in the central part of the state of Veracruz. The locations of specimens were performed within ecosystems pine-oak forest and mountain cloud forest in four municipalities along of the Sierra Madre Oriental (Xico, Coacoatzintla, Rafael Lucio and Tlacolulan). The study contributes to knowledge about their ecology and geographical distribution in the state of Veracruz.


2015 ◽  
Vol 5 (2) ◽  
pp. 66
Author(s):  
Angel Daen Morales García ◽  
Alfredo Acosta Rosales

ABSTRACTIn this note we present two new records of jaguar (Panthera onca) for the cloud forest of the Sierra Hidalguense region. These new records confirm the presence of the jaguar in this region, and evidence that some wild areas of Hidalgo State potentially have suitable conditions for the species persistence. We discuss the potential of the Sierra Hidalguense region to provide connectivity between the jaguar populations in the Sierra Madre Oriental in Mexico. It is necessary to improve the knowledge of jaguar distribution in the Hidalgo State to implement appropriate conservation plans for the species in eastern Mexico. Key words: Conservation, Hidalgo, La Misión, Panthera onca, Sierra Gorda.


2018 ◽  
Vol 21 (88) ◽  
Author(s):  
María Magdalena Salinas Rodríguez

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