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75 resultados encontrados para: TEMA: Río Grijalva (México)
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1.
Libro
Datos hidrológicos de sitios en estudio para aprovechamientos hidroeléctricos y estaciones climatológicas: hasta diciembre 1973
Comisión Federal de Electricidad (México) ;
Distrito Federal, México : Comisión Federal de Electricidad , s.f.
Clasificación: C CH/551.570212 / C6
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
SFC000036 (Disponible) , SFC000035 (Disponible)
Disponibles para prestamo: 2

2.
- Artículo con arbitraje
Dinámicas territoriales en torno a la construcción de la presa Malpaso, Chiapas (1960-2011): construir, trabajar y permanecer
Niño Maldonado, Cinthia (autora) ; Kauffer Michel, Edith Francoise (autora) ;
Disponible en línea
Contenido en: Sociedad y Ambiente Número 23 (julio-diciembre 2020), páginas 1-35 ISSN: 2007-6576
PDF PDF
Resumen en: Español | Inglés |
Resumen en español

El presente trabajo muestra cómo la construcción de una presa, en este caso la presa Malpaso en Chiapas, produjo dinámicas territoriales no previstas por la institución que auspició su construcción. A partir de entrevistas realizadas a los habitantes de Raudales Malpaso, y de la consulta de archivos e informes, principalmente de la Comisión del Río Grijalva, observamos que cada uno de los actores involucrados presentó dinámicas de apropiación territorial muy particulares. El artículo analiza cómo la visión que cada grupo de actores tiene del territorio sirve para intervenirlo y apropiarse de éste. La perspectiva sociocultural de la construcción del territorio es adoptada para analizar la llegada voluntaria de poblaciones asociadas a la construcción de la obra hidráulica: sus dinámicas territoriales se concretan en el espacio y a través del tiempo, en particular mediante las actividades laborales y la creación de un poblado permanente. Así el artículo evidencia cómo las acciones ejecutadas por un Estado pueden generar múltiples dinámicas de apropiación territorial, fenómeno distinto al desplazamiento de población que se estudia tradicionalmente en relación con las presas.

Resumen en inglés

This paper shows how the construction of the Malpaso dam in Chiapas produced territorial dynamics unforeseen by the institution that sponsored its construction. Based on interviews with the inhabitants of Raudales Malpaso, and the consultation of archives and reports mainly from the Grijalva River Commission, we observed that each of the stakeholders involved had very particular territorial appropriation dynamics. The article analyzes the way the vision of each group of actors of the territory serves to intervene and appropriate it. The socio-cultural approach to the construction of territory is used to analyze the voluntary arrival of people associated with hydraulic works. Their territorial dynamics are expressed in space and time particularly through labor activities and the creation of a permanent settlement. The paper demonstrates how state actions can create multiple dynamics for the appropriation of territory, a different phenomenon from the displacement traditionally studied in relation to dams.


3.
Artículo
Experimental validation of a cohesive suspended sediment transport model for two Mexican rivers
García Aragón, Juan Antonio (autor) ; Izquierdo Ayala, Klever (autor) ; Castillo Uzcanga, María Mercedes (autora) ; Carrillo Bibriezca, Laura (autora) ; Salinas Tapia, Humberto (autor) ;
Disponible en línea
Contenido en: Environmental Systems Research Volumen 8, número 12 (2019), p. 1-20 ISSN: 2193-2697
PDF
Resumen en: Inglés |
Resumen en inglés

Background: The south of Mexico is the least developed part of the country but its basins generate more than 60% of the country’s available water. Though disturbances to the rivers caused by development are still low, there is concern about the environmental health of the rivers. The calculation of the sediment load with a focus in fine fraction, where nutrients are found, is a priority. However, models for suspended sediment transport in large rivers are difficult to formulate because they carry a large amount of cohesive sediments, those cohesive sediments form aggregates or flocs with primary particles that are less than 65 μm. The hydrodynamic behavior of flocs depends on their size, density and shape, which differs from that of non‑cohesive sediments as theirs depends on their interaction with the water column. A classical model to calculate suspended sediment concentration profiles for steady flow conditions is the Rouse equation, which has been extensively validated for non‑cohesive suspended sediment. Some authors have demonstrated that when applied in some large rivers in conjunction with non‑cohesive settling velocity models it does not perform very well. The difficulty comes from the fact that most of the suspended sediment charge in large rivers is constituted by cohesive sediments.

Results: Suspended sediments from Mexico’s two largest rivers Usumacinta and Grijalva, with a mean flow rate near river mouth of 2020 m³/s and 1150 m³/s respectively, were analyzed in a rotating annular flume (RAF). The shear velocity obtained in the field by ADCP was reproduced in the annular flume, the size and shape of flocs were obtained by means of PTV. Settling velocity was also obtained to calibrate a settling velocity model appropriate for cohesive sediments. Conclusions: The settling velocity model developed for cohesive sediments in conjunction with the Rouse equation allowed the reproduction of suspended sediment concentration profiles for the rivers Usumacinta and Grijalva. The estimated concentration profiles were compared and validated with the measured concentration profiles in the field. Thus, the model obtained through this research can be used to estimate nutrient delivery to the sea from the largest rivers in Mexico.


4.
Artículo
La gran inundación del 2007 en Villahermosa, Tabasco, México: antecedentes y avances en materia de control
Ramos Reyes, Rodimiro (autor) ; Palomeque de la Cruz, Miguel Ángel (autor) ;
Contenido en: Anales de Geografía de la Universidad Complutense Volumen 39, número 2 (2019), páginas 387-413 ISSN: 1988-2378
PDF
Resumen en: Español | Inglés | Frances |
Resumen en español

Durante el siglo XX y principios del XXI, se realizó una gran transformación en el sistema hídrico en la cuenca del río Grijalva, México, debido al inadecuado crecimiento urbano en Villahermosa, Tabasco, que invadió tierras bajas e inundables, provocando vulnerabilidad en la población. Estos antecedentes se relacionaron con las grandes inundaciones del 2007, que afectaron aproximadamente 1,500 localidades y dañaron hasta el 75% de la población, causando enormes pérdidas millonarias en la infraestructura urbana; cultivos agrícolas, comercio y vivienda, principalmente en Villahermosa. Luego de las grandes inundaciones de 2007, el Plan Hídrico Integral de Tabasco (PHIT), fue diseñado para reducir al máximo la condición de riesgo y vulnerabilidad, donde se dio el reforzamiento y la protección de bordos, sin embargo, aún es primordial la ejecución del programa de ordenamiento ecológico, los programas de desarrollo urbano y el atlas de riesgo, donde se promuevan las regulaciones del crecimiento urbano y los asentamientos irregulares. Queda mucho trabajo por hacer concienzudamente, donde los actores políticos y los centros de investigación no solo hacen lo que deben hacer, sino que la sociedad en general debe reconocer los beneficios de respetar la naturaleza y las regulaciones sociales. A más de una década de la inundación más grande y drástica no ha habido otra catástrofe o bien las obras realizadas han mitigado los estragos. Se han logrado ciertos objetivos, pero no hay que bajar la guardia y seguir generando información bas e que sirva para convivir con la naturaleza y el medio ambiente.

Resumen en inglés

During the twentieth and the beginning of the twenty- first century it was done a huge transformation in the hydraulic surface system in the Grijalva' s river basin, Mexico; due to the inadecuate of the urban growth in Villahermosa, Tabasco that in vaded low and floodable lands, provoking vulnerability in the population. These backgrounds were related to the great flooding of the 2007 that affected about 1,500 localities and damaged till 75% of the population causing huge millionaires losses in the urban infraestructure, agricutural crops, commerce and housing mainly in Villahermosa. After the great flooding in 2007 the integral hydric plan of tabasco (IHPT), was designed of minimizing the condition of risk and vulnerability where the reinforcement and protection of fringes where done, it's important the execution of enviromental, ecological and urban development programs and the atlas of risk, where the regulations of urban growth and irregular settelements is promoted, is still essetial. There is a lot of work left to do conscientiously, where not only politicians actors and research centers do what they need to do but also the society in general must recognises the benefits to respect nature and the social regulations. More than a dacade ago of th e biggest and drastic flooding there has no been another catastrophe or maybe the work done has avoided the ravages. it has achieved certain goals but it is important don't lower our guards and continue making research and base informations that help us to coexist with nature and enviroment.

Resumen en frances

Pendant le vingtième et le début du vingt et unième siècle. le système hydraulique superficiel du bassin du fleuve Grijalva, au Mexique, a été profondément transformé; en raison de l'inadéquation de la croissance urbaine à Villahermosa, Tabasco qui a envahi des terres basses et inondables, inutilisables; provoquant la vulnérabilité de la population. Ces origines sont liées à la grande inondation de 2007 qui a touché environ 1 500 localités et endommagé jusqu’à 75% de la population, causant d’énormes pertes millionnaires dans l’infrastructure urbaine; les cultures agricoles, le commerce et le logement principalement à Villahermosa. Après la grande inondation de 2007, le plan hydrique intégral de Tabasco (PHIT). A été conçu dans le but de réduire au maximum les conditions de risque et de vulnérabilité, là où il est important de renforcer et de protéger les franges, ce qui est essentiel à l’exécution du programme environnemental et écologique; Les programmes de développement urbain et l'atlas des risques, dans lesquels la réglementation de la croissance urbaine et des établissements irréguliers sont promus, sont toujours essentiels. Cependant, il reste beaucoup de travail à faire consciencieusement, où non seule ment les acteurs politiques et les centres de recherche font ce qu’ils doivent faire, mais aussi la société en général doit reconnaîtr e les avantages de respecter la nature et les réglementations sociales. Il y a plus d'une décennie des inondations les plus importantes et les plus dramatiques, il n'y a pas eu d'autre catastrophe ou peut-être que les travaux effectués ont évité les ravages. il a atteint certains objectifs, mais il est important de ne pas baisser la garde et de continuer à faire des recherches et des informations de base qui nous aident à coexister avec la nature et l'environnement.


5.
- Artículo de divulgación
*En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
Ocho reflexiones de la cuenca del río Grijalva
Laino Guanes, Rafaela María (autora) ; Musálem Castillejos, Karim (autor) ; Musálem Castillejos, Nasim (autor) ;
Disponible en línea
Contenido en: ECOfronteras Vol. 23, no. 65 (enero/abril 2019), p. 22-25 ISSN: 2007-4549
Cerrar
SIBE Campeche
35856-50 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
35856-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
35856-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
35856-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
35856-60 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
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Resumen en: Español |
Resumen en español

La palabra Grijalva no se refiere solo un río, sino al territorio aledaño que integra la cuenca transfronteriza entre México y Guatemala, “la mejor tierra que el sol alumbra”. Se reconoce por sus humedales, imponentes bellezas naturales y presas hidroeléctricas, pero también por la pobreza y el deterioro ambiental que afectan a sus habitantes, y que deben revertirse en beneficio de esta zona de gran riqueza biocultural.


6.
Artículo
*Solicítelo con su bibliotecario/a
Species richness of urban and rural fish assemblages in the Grijalva Basin floodplain, southern Gulf of Mexico
Sánchez Martínez, Alberto de Jesús (autor) ; Álvarez Pliego, Nicolás (autor) ; Espinosa Pérez, Héctor (autor) ; Florido Araujo, Rosa Amanda (autora) ; Macossay Cortez, Alberto (autor) ; Barba Macías, Everardo (autor) ; Salcedo Meza, Miguel Ángel (autor) ; Garrido Mora, Arturo (autor) ;
Disponible en línea
Contenido en: Cybium Volumen 43, número 3 (April 2019), páginas 239-254 ISSN: 2101-0315
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés | Frances |
Resumen en inglés

Urban sprawl poses a major threat to aquatic biodiversity. The species richness in fish assemblages of fifteen ecosystems with different degrees of hydraulic connectivity in the floodplain of the Grijalva River watershed has been analysed and described along five years. After human interventions, four lagoons are permanently disconnected and three are temporarily connected. The other three lagoons stay permanently interconnected. Native cichlids and poeciliids dominated in number of species, representing 24 of the 55 listed species. These 55 species include six non-native invasive species in the Usumacinta Province. The lowest number of species was recorded in urban lagoons, while they were similar in rural lagoons and rivers. In addition, 60% of the fish absent in the lagoons of the Metropolitan Area of Villahermosa (MAV) are species with a marine or an estuarine affinity; thus, the permanently disconnected MAV lagoons have seven species less than the permanently connected rural lagoons. Diversity corresponds to that reported in the literature. In urban lagoons, low diversity and the high percentage of lacking fish with a marine or an estuarine affinity indicate that ichthyological diversity is favoured by the interconnection of rivers and rural lagoons in the floodplain of the Grijalva River Basin.

Resumen en frances

L’expansion urbaine est une menace pour la biodiversité aquatique. La richesse en espèces dans des assemblages de poissons de quinze écosystèmes avec différents degrés de connectivité hydraulique situés dans la plaine inondable du bassin versant du fleuve Grijalva a été analysée et décrite au cours de cinq années. Suite à des interventions humaines, quatre lagunes sont déconnectées en permanence et trois sont temporairement connectées. Trois autres lagunes restent interconnectées en permanence. Les cichlidés et les poeciliidés natifs dominent en nombre d’espèces, représentant 24 des 55 espèces répertoriées. Ces 55 espèces incluent 6 espèces invasives non indigènes in the Usumacinta Province. Les diversités spécifiques les plus faibles ont été enregistrées dans les lagunes urbaines, tandis qu’elles plus importantes et similaires dans les lagunes et les rivières rurales. De plus, 60% des poissons absents dans les lagunes de la Région Métropolitaine de Villahermosa (MAV) sont des espèces ayant une affinité marine ou estuarienne. Les lagunes MAV déconnectées en permanence comptaient sept espèces de moins que les lagunes rurales connectées en permanence. La diversité correspond à celle rapportée dans la littérature. Une faible diversité et l’absence de poissons ayant une affinité marine ou estuarienne dans les lagunes urbaines indiquent que la diversité ichtyologique est favorisée par l’interconnexion des rivières et lagunes rurales situées dans la plaine inondable du bassin du fleuve Grijalva.


7.
- Artículo con arbitraje
Resumen en: Inglés |
Resumen en inglés

Assessments of trophic diversity are critical for evaluating ecological integrity of habitats, but interpretations of such assessments require an understanding of variation across natural environmental gradients. This can be problematic when comparing structure of assemblages in under-studied regions or habitats, such as watersheds in dry tropical forests. Here,we compared assemblage-wide trophic metrics and intraspecific variation for a subset of consumer traits across rivers and among different ecosystem types within the Grijalva and Usumacinta River basins of Mexico. The two rivers differ with respect to flow-regime alteration and climate: the Grijalva River has been hydrologically altered by a series of dams and has wet and dry tropical forests in its watershed, whereas the Usumacinta River remains unimpounded with a watershed dominated by tropical wet forest. Use of allochthonous resourceswas pervasive in Usumacinta basin tributaries,with stable isotope signatures suggesting that many fishes directly consumed riparian plants and detritus. In contrast, fish assemblages inGrijalva basin tributaries were supported by higher proportions of in-stream production. Food-chain length was highest in a Grijalva River reservoir fish assemblage, although trophic diversity was lowin the impounded systemcompared to the mainstem Usumacinta River, where fishes consumed the broadest variety of food resources. We also observed differences in trophic ecology and body nutrient content within taxa across habitat types and basins. The differences we observed suggest that even in relatively intact watersheds, expectations for trophic structure in tropical streams should be adjusted based on factors such as discharge, climate, and riparian forest cover.


8.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Calidad de agua del río Grijalva en la frontera de Chiapas y Tabasco
Musálem Castillejos, Karim ; Laino Guanes, Rafaela María (coaut.) ; Bello Mendoza, Ricardo (coaut.) ; González Espinosa, Mario (coaut.) (1950-) ; Ramírez Marcial, Neptalí (coaut.) (1963-) ;
Contenido en: Ecosistemas y Recursos Agropecuarios Vol. 5, no. 13 (enero-abril 2018), p. 55-64 ISSN: 2007-901X
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
45543-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF PDF
Resumen en: Español | Inglés |
Resumen en español

El objetivo fue caracterizar la calidad de agua en una sección del río Grijalva y en algunos de sus a uentes en la frontera entre los estados de Chiapas y Tabasco, en la época de lluvias y secas. Se determinaron 23 variables que incluyeron parámetros sicoquímicos, microbiológicos y de contaminantes, los valores obtenidos se compararon con los límites máximos permisibles (LMP) para agua de uso y consumo humano indicados en la Norma O cial Mexicana NOM- 127-SSA1-1994, y con la escala de clasi cación de calidad del agua de la Comisión Nacional del Agua (CONAGUA). La calidad del agua en la sección del río Grijalva estudiada, disminuye en su descenso a las zonas pobladas del estado de Tabasco. La turbidez y los niveles de coliformes y E. coli incrementan, tanto en el cauce como en fuentes destinadas al consumo humano. Para las otras variables evaluadas, se tienen características aceptables de calidad del agua, principalmente en la época seca, con excepción del mercurio, que se presenta en niveles superiores a los recomendados. Se sugiere realizar estudios sobre la presencia del mercurio en la cuenca del Grijalva.

Resumen en inglés

The objective was to characterize water quality for a section of the Grijalva River and its tributaries, for rainy and dry season in the border of the States of Chiapas and Tabasco. 23 physical, chemical, and microbiological parameters as well as contaminants were determined and compared with the Mexican norm NOM-127-SSA1-1994 which establishes water quality maximum permissible limits for use and human consumption and with the water quality classi cation scale proposed by the Comisión Nacional del Agua. Water quality of the Grijalva River in the studied section and tributaries, also locally named Almandros river, decreases as it descends to more populated areas of Tabasco. Water turbidity and high levels of coliforms and Escherichia are the main problems associated with the rivers of the studied area, even in water sources destined for human consumption. Other studied parameters have acceptable water quality mainly during the dry season, except for Mercury, which showed higher levels than the recommended by the norm in all sampling sites. The need to further study presence of Mercury in the Grijalva River basin is suggested.


9.
- Artículo con arbitraje
Climate impact on the development of pre-classic maya civilisation
Nooren, Kees ; Hoek, Wim Z. (coaut.) ; Dermody, Brian J. (coaut.) ; Galop, Didier (coaut.) ; Metcalfe, Sarah (coaut.) ; Islebe, Gerald A. (coaut.) ; Middelkoop, Hans (coaut.) ;
Contenido en: Climate of the Past Vol. 14 (August 2018), p. 1253-1273 ISSN: 1814-9324
PDF PDF
Resumen en: Inglés |
Resumen en inglés

The impact of climate change on the development and disintegration of Maya civilisation has long been debated. The lack of agreement among existing palaeoclimatic records from the region has prevented a detailed understanding of regional-scale climatic variability, its climatic forcing mechanisms and its impact on the ancient Maya. We present two new palaeo-precipitation records for the central Maya lowlands, spanning the Pre-Classic period (1800BCE–250CE), a key epoch in the development of Maya civilisation. A beach ridge elevation record from world's largest late Holocene beach ridge plain provides a regional picture, while Lake Tuspan's diatom record is indicative of precipitation changes at a local scale. We identify centennial-scale variability in palaeo-precipitation that significantly correlates with the North Atlantic δ14C atmospheric record, with a comparable periodicity of approximately 500 years, indicating an important role of North Atlantic atmospheric–oceanic forcing on precipitation in the central Maya lowlands. Our results show that the Early Pre-Classic period was characterised by relatively dry conditions, shifting to wetter conditions during the Middle Pre-Classic period, around the well-known 850BCE (2.8ka) event. We propose that this wet period may have been unfavourable for agricultural intensification in the central Maya lowlands, explaining the relatively delayed development of Maya civilisation in this area. A return to relatively drier conditions during the Late Pre-Classic period coincides with rapid agricultural intensification in the region and the establishment of major cities.


10.
- Artículo con arbitraje
Home garden agrobiodiversity in cultural landscapes in the tropical lowlands of Tabasco, México
Alcudia Aguilar, Alejandro ; Van Der Wal, Hans (coaut.) ; Suárez Sánchez, Juan (coaut.) ; Martínez Zurimendi, Pablo (coaut.) ; Castillo Uzcanga, María Mercedes (coaut.) ;
Contenido en: Agroforestry Systems Vol. 92, no. 5 (October 2018), p. 1329–1339 ISSN: 0167-4366
Resumen en: Inglés |
Resumen en inglés

We studied whether agrobiodiversity in home gardens reflects the cultural landscapes that embed them. We compared floristic composition, biomass and cover of trees in home gardens between the cultural landscapes on mountain slopes (MSL), small hills (SHL), and floodplains (FPL) in a segment of the Grijalva–Usumacinta watershed in the tropical lowlands of Tabasco, Mexico. We characterized the cultural landscapes based on information obtained through questionnaires, identified species andmeasured tree height and diameter at breast height in random samples of home gardens from two localities in each case. The cultural landscapes showed distinct land use combinations: MSL comprised subsistence agriculture, pasturelands and forests; SHL pasturelands, some secondary vegetation and industrial agriculture fields; and FPL mainly industrial agriculture fields and pasturelands. Total species richness was greater in MSL than in SHL and FPL. Mean species richness was greater in MSL and SHL (22.4 and 15.8 respectively) than in FPL(7.2), aswas themean number of individuals per home garden (98.2, 94.1 and 20.4. Dominant species in home gardens in FPL and SHL included particular secondary species for each landscape,whereas single or double occurrences of mature forest species were distinctive of home gardens in MSL. Mean biomass was greater inMSLthan in SHLand FPL(37.1, 28.2 and 23.7 Mg C ha-1), as was tree cover (1.06, 0.95 and 0.76 m2/m2). We conclude that agrobiodiversity varies considerably among cultural landscapes and recommend the design of specific policies to enhance its conservation in each of them.