scholarly journals Ten Native Tree Species for potential use in Soil Bioengineering in northeastern Mexico

2019 ◽  
Vol 97 (3) ◽  
pp. 291
Author(s):  
Rebeca Zavala González ◽  
Israel Cantú-Silva ◽  
Laura Sánchez-Castillo ◽  
Humberto González-Rodríguez ◽  
Tetsuya Kubota ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Modulus Of Elasticity ◽  
Oak Forest ◽  
Nuevo Leon ◽  
Acacia Berlandieri ◽  
Soil Bioengineering ◽  
Group I ◽  
Nuevo León ◽  
Northeastern Mexico ◽  
Tamaulipan Thornscrub

<p><strong>Background:</strong>  Due to causes such as small-scale earthquakes or the increasing amount of heavy rainfall extreme events, many slopes are potentially unstable. Soil bioengineering is an effective tool for treatment of a variety of unstable and/ or eroding sites.</p><p><strong>Question and hypothesis: </strong>Maximum force to breakage of the roots is influenced by diameter.</p><p>Tensile strength and modulus of elasticity of roots is different between species of the two different ecosystems: Tamaulipan thornscrub and Pine-oak forest.</p><p><strong>Studied Species:</strong> Site 1: <em>Acacia berlandieri, Cordia boissieri, Acacia rigidula, Havardia pallens,</em> and<em> Acacia farnesiana</em>;<em> </em>Site 2:<em> Quercus rysophylla, Pinus pseudostrobus, Quercus canbyi, Quercus polymorpha, </em>and<em> Arbutus xalapensis</em>.</p><p class="Sous-auteur1"><strong>Study area and dates: </strong>Tamaulipan thornscrub in Northeastern Mexico (Linares, Nuevo León), from May to July 2016; and Pine-Oak forest in Sierra Madre Oriental, Iturbide, Nuevo Leon, from September to October 2016.</p><p><strong>Methods:</strong> The species considered were selected based on their native characteristics (natural distribution, abundance in the area and widespread existence on slopes). The tests were conducted with the Universal Testing Machine Shimadzu type SLFL-100KN.</p><p><strong>Results:</strong>  The relationships between tensile strength (T<sub>s</sub>) and diameters of the studied species, and root diameters and modulus of elasticity (E<sub>root</sub>) were negative.</p><p>The minimum and maximum values of tensile strength varied from 1.86 N / mm<sup>2</sup> in <em>C. boissieri</em> to 44.65 N/mm<sup>2</sup> in <em>A. rigidula</em>.</p><p><strong>Conclusions: </strong><em>Acacia berlandieri</em> showed the highest tensile strength among all species of the two ecosystems, in the diametric group I (0.1 to 2.9 mm).</p>

scholarly journals Comparisons of the Root Mechanical Properties of three Native Mexican Tree Species for Soil Bioengineering Practices

2017 ◽  
Vol 95 (2) ◽  
pp. 259269 ◽  
Author(s):  
Laura Sanchez-Castillo ◽  
Tetsuya Kubota ◽  
Israel Cantu-Silva ◽  
Maria Yanez-Diaz ◽  
. Hasnawir ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Modulus Of Elasticity ◽  
Native Species ◽  
Root Diameter ◽  
Sierra Madre Oriental ◽  
Acacia Berlandieri ◽  
Soil Bioengineering ◽  
Sierra Madre ◽  
Pinus Pseudostrobus

<p class="Sous-auteur1"><strong>Background:</strong> Urbanized slope areas in Sierra Madre Oriental are prone to sediment related disasters mainly caused by heavy rainfall episodes during hurricane season, knowledge on the factors on soil-roots dynamics are required to mitigate or lessen those disasters.</p><p class="Sous-auteur1"><strong>Questions and hypothesis: </strong>The mechanical properties of roots of native species vary according species. The mechanical properties of the roots are influenced by the morphology of root: diameter.</p><p class="Sous-auteur1"><strong>Species studied: </strong><em>Quercus rysophylla</em>, <em>Pinus pseudostrobus</em> and <em>Acacia berlandieri</em>.</p><p class="Sous-auteur1"><strong>Study site and dates:</strong> Sierra Madre Oriental, Chipinque National Park in Monterrey, Nuevo Leon. From middle of December 2014.</p><p class="Sous-auteur1"><strong>Methods:</strong> Selection of species was made base on widespread distribution and predominance in degraded areas. Samples were taken at field and tensile tests to calculate maximum force to root breakage were conducted using a laboratory dispositive, calculations of tensile strength and modulus of elasticity were calculated using formulas. The corresponding relations between root diameter and mechanical properties were established.</p><p class="Sous-auteur1"><strong>Results:</strong> Results confirmed that bigger diameters require bigger forces to break. In other hand, results confirmed the negative relationship between diameter and tensile strength and diameter and modulus of elasticity. Pointing out that roots of bigger diameter have less tensile strength and elasticity. The order of importance of the species studied according its mechanical properties was found like: <em>Acacia berlandieri</em> &gt; <em>Quercus rysophylla</em> &gt; <em>Pinus pseudostrobus</em>.</p><p class="Sous-auteur1"> <strong>Conclusions<em>:</em></strong> The results of this study begin the data contribution of the mechanical properties of native species of Sierra Madre Oriental in order to use it in the application of soil bioengineering practices on urbanized slopes prone to disasters.</p>

MINERALOGY AND GEOCHEMISTRY OF THE SAN FELIPE FORMATION (UPPER CRETACEOUS) IN THE PEDRO CARRIZALES LOCALITY (RAYONES, NUEVO LEÓN), NORTHEASTERN MÉXICO

2020 ◽  
Author(s):  
Isabel Cossío-Dülmer ◽  
◽  
Carolina Cossío-Dülmer ◽  
Fernando Velasco Tapia ◽  
Yolanda Pichardo-Barrón ◽  
...  
Keyword(s):  
Upper Cretaceous ◽  
Nuevo Leon ◽  
Nuevo León ◽  
Northeastern Mexico

scholarly journals Efectos esperados de la extracción de gas shale en el noreste de México: un enfoque cualitativo

2018 ◽  
Vol 30 (72) ◽  
Author(s):  
Dionicio Morales Ramírez ◽  
Ruth Roux
Keyword(s):  
Shale Gas ◽  
Optimal Number ◽  
Gas Extraction ◽  
Gas Oil ◽  
Gas Shale ◽  
Nuevo Leon ◽  
Nuevo León ◽  
The Face ◽  
Northeastern Mexico ◽  
Expected Benefits

En este artículo se identificaron y valoraron los efectos esperados de la extracción de gas shale en Tamaulipas, Nuevo León y Coahuila, ante la llegada inminente de compañías nuevas a la cuenca de Burgos, en el noreste de México. Con la metodología de criterios relevantes integrados se recopi­laron datos de informantes clave de los sectores académico, gubernamental y empresarial, de los tres estados. Según los resultados, 65 por ciento de las variables empleadas para evaluar dichos efectos, derivados del desarrollo de la indus­tria en la región, se asocian con cambios positivos, 15 con negativos y 20 se mantienen inalterables. Se sobreestimaron los beneficios esperados por la explotación de gas oil/shale, y existe preocupación por la disponibilidad de agua, dadas las condiciones geográficas y climatológicas de la región. Aunque la metodología empleada no especifica que se deba aplicar a un número óptimo de actores, se reconoce que el análisis podría mejorar significativamente entre mayor sea la cantidad de participantes. La contribución principal al campo de la evaluación de las repercusiones sociales es la adaptación de esta metodología, debido a la escasa literatura sobre el tema.Expected effects of shale gas extraction in northeastern Mexico: a qualitative approachThis article identifies and assesses the expected effects of shale gas extraction in Tamaulipas, Nuevo Leon and Coa­huila in the face of the imminent arrival of new companies to Burgos Basin in northeastern Mexico. Using the inte­grated relevant criteria methodology, data of key informants from the academic, governmental and business sectors in the three states were collected. According to the results, 65 percent of the variables used for assessing these effects, as a consequence of the development of industry in the region, are associated with positive changes, 15 percent with nega­tive changes and 20 percent remain unchanged. Expected benefits from shale gas/oil exploitation were overestimated; moreover, there is concern about the availability of water, given the geographical and climatological conditions of the region. Although the methodology used does not specify it must be applied to an optimal number of actors, it is to be admitted that the analysis could be significantly improved the greater the number of participants is. The main con­tribution to the field of assessment of social repercussions is that of having adapted this methodology because of the existing scarce literature on the subject.

Relationship between MMI Data and Ground Shaking in the State of Nuevo León, Northeastern Mexico

2015 ◽  
Vol 86 (5) ◽  
pp. 1489-1495 ◽  
Author(s):  
Juan C. Montalvo‐Arrieta ◽  
Rocío L. Sosa‐Ramírez ◽  
Edgar G. Paz‐Martínez
Keyword(s):  
The State ◽  
Nuevo Leon ◽  
Ground Shaking ◽  
Nuevo León ◽  
Northeastern Mexico

The Beginning of Industrialization in Northeast Mexico

1983 ◽  
Vol 39 (4) ◽  
pp. 499-518
Author(s):  
Guillermo Beato ◽  
Domenico Sindico
Keyword(s):  
Latin American ◽  
Industrial Production ◽  
Industrial Growth ◽  
Nuevo Leon ◽  
Nuevo León ◽  
Industrial Complexes ◽  
National Production ◽  
Northeastern Mexico ◽  
Late Start ◽  
Important State

In the Latin American context there are few regions which defy the commonly accepted idea of dependent development and the late start of the process of industrial growth following the great crisis of 1929. Among these few, Northeastern Mexico, with its industrial capital Monterrey, appears to offer the best example of a large industrial spurt occurring towards the end of the nineteenth century. During the two decades from 1890 to 1910 important industrial complexes, basically metallurgic and siderurgic factories, began to operate in this region, creating an impressive network of related activities and making possible considerable growth in the local demand for both consumption goods and semi-manufactured items. The statistics on industrial production reveal the importance of the process: during the years 1897,1898 and 1899 the metallurgic sector in Nuevo León produced goods worth 50,847,178 pesos. This represented 23.5% of total Mexican production, making it the most important state in the nation. By 1902, Nuevo León was also in first place as far as total industrial production was concerned, accounting for 13.5% of the national production.

scholarly journals Inventario de movimientos en masa en el sector sur de la Saliente de Monterrey. Caso de estudio: cañón Santa Rosa, Nuevo León, noreste de México

2017 ◽  
Vol 34 (3) ◽  
pp. 182 ◽  
Author(s):  
Jorge A. Salinas-Jasso ◽  
Ricardo A. Salinas-Jasso ◽  
Juan C. Montalvo-Arrieta ◽  
Efraín Alva-Niño
Keyword(s):  
Historical Data ◽  
Field Investigation ◽  
Google Earth ◽  
Landslide Risk ◽  
Tropical Storms ◽  
Nuevo Leon ◽  
Nuevo León ◽  
Landslide Risk Assessment ◽  
Northeastern Mexico ◽  
Slope Instabilities

We present a landslide inventory for the Santa Rosa Canyon in the Monterrey Salient, between Linares and Iturbide in Nuevo León state. A total of 429 landslides were documented from field investigation, analysis and interpretation of satellite imagery and historical data from Google Earth platform for the last 30 years. Falls, slides and flows are the most typical landslides, mainly related to extraordinary rainfalls from hurricanes and tropical storms. Moreover, an overall increase in seismicity in northeastern Mexico may indicate this activity as the second most important factor triggering slope instabilities. This inventory could be used in detailed landslide risk assessment studies in the region, and the methodology may be extrapolated to neighboring areas with recurrent landslides and a lack of scientific studies.

scholarly journals Eriocoma valdesii, a new species from México (Poaceae, Stipeae)

PhytoKeys ◽  
2020 ◽  
Vol 139 ◽  
pp. 21-28
Author(s):  
Paul M. Peterson ◽  
Konstantin Romaschenko ◽  
Robert J. Soreng ◽  
Jesus Valdés Reyna
Keyword(s):  
New Species ◽  
Nuevo Leon ◽  
San Luis ◽  
Nuevo León ◽  
San Luis Potosi ◽  
Northeastern Mexico ◽  
A New Species ◽  
San Luis Potosí

Eriocoma valdesiisp. nov., is described and illustrated. The new species was found growing on calcareous rocky slopes and hillsides between 1700–2721 m in Coahuila, Nuevo León, San Luis Potosí, and Tamaulipas. The new species is morphologically similar to Eriocoma lobata but differs in having ligules (2–) 4.5–8.5 mm long with acute to narrowly acute and lacerate apices and florets with a sharp-pointed callus. In addition, we include a key to the species of Eriocoma in northeastern México.

Late Maastrichtian age of spherule deposits in northeastern Mexico: implication for Chicxulub scenario

2001 ◽  
Vol 38 (2) ◽  
pp. 229-238 ◽  
Author(s):  
W Stinnesbeck ◽  
P Schulte ◽  
F Lindenmaier ◽  
T Adatte ◽  
M Affolter ◽  
...  
Keyword(s):  
Nuevo Leon ◽  
Significant Evidence ◽  
Nuevo León ◽  
Northeastern Mexico

In the La Sierrita area of Nuevo Leon, Mexico, three spherule layers are present and separated from the overlying siliciclastic deposits by up to 6 m of pelagic marls. The marls are of latest Maastrichtian age (Plummerita hantkeninoides (CF1) Zone, Micula prinsii Zone) and deposited under normal pelagic conditions with no significant evidence of reworking or slumping. Original deposition of the spherule layers occurred during the last 300 ka of the Maastrichtian and well prior to the Cretaceous-Tertiary (K–T) boundary event. Thus, if the spherules in northeastern Mexico provide critical evidence of an impact at Chicxulub, this impact predates the K–T boundary.

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