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1.
Capítulo de libro
Evaluating the hypothesis of pleistocene refugia for mammals in the Cuatro Ciénegas Basin
Gámez Tamariz, Niza (autora) ; Castellanos Morales, Gabriela (autora) ;
Contenido en: Animal diversity and biogeography of the Cuatro Ciénegas Basin Cham, Switzerland : Springer Nature Switzerland AG, 2019 página 203-224 ISBN:3-030-11261-6 :: 978-3-030-11261-5
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Resumen en inglés

The Cuatro Ciénegas Basin (CCB) in the state of Coahuila, Mexico, is a very diverse ecosystem with high endemism of flora and fauna. It is included in the Ramsar list of wetlands and considered as a priority area for conservation by the World Wildlife Fund (WWF). This site is located within the Chihuahuan Desert (CD) in an isolated area surrounded by the Sierra Madre Oriental and Sierra del Carmen. A previous study by Contreras-Balderas et al. (Southwest Nat 52:400–409, 2007) found 39 mammalian species occurring in the CCB Natural Protected Area, 30 of which are widespread. These authors concluded that there has been a long-term environmental stability in the area, based on archaeological records. In addition, the mammalian biota found is an admixture between the biotas from the Chihuahuan Biotic Province and the Tamaulipeca Province. Therefore, the aim of this study is to describe the biogeographic patterns of the mammals that occur in the CCB to determine whether this site was an important area of refuge during the Pleistocene’s climate pulses and to deepen our knowledge of the mammalian biota of the CCB. We obtained ecological niche models (ENMs) and projected them into past environmental conditions, Last Glacial Maximum (LGM) and Last Interglacial (LIG), to determine whether this area could have constituted a refuge area for mammalian species. A review of the phylogeographic studies on these species to determine whether or not the CCB could have been a Pleistocene refuge for mammalian species was also conducted. Accordingly, we expect that species that found refuge in the CCB will show high genetic variation in this area, while species that were not present in the area during the Pleistocene will show lower levels of genetic variation.

Accordingly, we expect that species that found refuge in the CCB will show high genetic variation in this area, while species that were not present in the area during the Pleistocene will show lower levels of genetic variation. According to our results, the CCB was an important area of refuge during Pleistocene climatic changes, specifically over the Sierra la Madera and Sierra San Marcos. Most mammalian species of the CCB are widespread. Results from past ENMs and phylogeographic analyses were consistent, except for five species of rodents, which did not conform to the expected patterns of genetic diversity and changes in their distribution. Most reviewed analyses failed to include an adequate sample size for Mexican populations. Therefore, conducting phylogeographic studies of these mammals in the CD is fundamental for understanding the dynamics that determined its biodiversity.


2.
Libro
The holocene and anthropocene environmental history of Mexico: a paleoecological approach on Mesoamerica / editors: Nuria Torrescano Valle, Gerald A. Islebe, Priyadarsi D. Roy
Torrescano Valle, Nuria (editora) ; Islebe, Gerald A. (editor) ; Roy, Priyadarsi Debajyoti (editor) ;
Cham, Switzerland : Springer International Publishing , c2019
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Clasificación: EE/577 / H6
Bibliotecas: Campeche , San Cristóbal
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SIBE Campeche
ECO040007071 (Disponible)
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ECO010019867 (Disponible)
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Resumen en español

This book provides essential information on Mexico’s Holocene and Anthropocene climate and vegetation history. Considering the geography of Mexico – which is home to a variety of climatic and environmental conditions, from desert and tropical to high mountain climates – this book focuses on its postglacial paleoecology and paleoclimatology. Further, it analyses human intervention since the middle Holocene as a major agent of environmental change. Offering a valuable tool for understanding past climate change and its relationship with present climate change, the book is a must-read for botanists, ecologists, palaeontologists and graduate students in related fields.

Índice

1 Introduction: The Holocene and Anthropocene Environmental History of Mexico
References
2 Paleoclimate of the Gulf of California (Northwestern Mexico) During the Last 2000 Years
Introduction
Regional Settings
Processes Responsible for the Sedimentation Cycle
Hydrological Processes Linked to Climate and Anthropogenic Changes
Integrated Water–Vertical Settling Studies in the Alfonso Basin
Climate Variations: Interannual, Centennial, and Millennial Scales
Centennial–Scale Variability
Climate Modeling
Conclusions
References
3 Holocene Hydroclimate of the Subtropical Mexico: A State of the Art
Introduction
Modern Climate
Register and Hypothesis
Vegetation Composition
Hydrological Variation and Climate Forcing
Conclusions
References
4 The Environment of Ancient Cloud Forests in the Mexican Pacific
The Mexican Pacific
The Past Environments in the Mexican Pacific
The Present Cloud Forest
The Ancient Cloud Forests
Methods
Results
Discussion
Conclusion
References
5 Sea Level Change and Its Influence on the Coastal Landscape in the Gulf of Mexico During the Holocene
Introduction
Vegetation Types in the Gulf of Mexico
Vegetation Response to Sea Level
Human Impact on Coastal Vegetation
Conclusion
References
6 Insights into the Holocene Environmental History of the Highlands of Central Mexico
Introduction
Central Mexico
Holocene Environment
References
7 Integration of Landscape Approaches for the Spatial Reconstruction of Vegetation
Introduction
Methods
Results
Discussion
References
8 Volcanic Activity in Mexico During the Holocene
Introduction
Distribution of Volcanoes in Mexico
Holocene Eruptions from Volcanoes in Mexico
Active Stratovolcanoes and Calderas
Monogenetic Volcanic Fields
Outlook of Holocene Volcanism
References


3.
- Capítulo de libro con arbitraje
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Introduction: the holocene and anthropocene environmental history of Mexico
Torrescano Valle, Nuria (autora) ; Islebe, Gerald A. (autor) ; Roy, Priyadarsi Debajyoti (autor) ;
Disponible en línea
Contenido en: The holocene and anthropocene environmental history of Mexico: a paleoecological approach on Mesoamerica / editors: Nuria Torrescano Valle, Gerald A. Islebe, Priyadarsi D. Roy Cham, Switzerland : Springer International Publishing, 2019 página 1-5 ISBN:978-3-030-31718-8
Bibliotecas: Campeche , Chetumal , San Cristóbal
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59782-30 (Disponible)
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Resumen en español

The Holocene spans the last 11,700 years of Earth’s history, and the paleoecology and paleoclimate dynamics of Mexico over this interval were complex. This is apparent when considering the region’s ecological and physiographic diversity, as well as human impact since the Late Holocene. The geography of Mexico varies from desert to high mountain systems, indicating conspicuous precipitation and temperature variability on latitudinal and altitudinal scales. More than one-third of Mexico’s territory is classified as arid or subarid. This area receives more than 60% of its total annual precipitation during the warm season through the North American Monsoon (NAM) and tropical storm systems, and significant winter precipitation occurs only in its northwestern margin. The Anthropocene is the latest part of the Holocene and it is marked by an era of substantial human activity. Climate change during this interval is not exclusively driven by natural processes, as humans have been influencing shifts in the global climate. Several climate projections predict that anthropogenic global warming will cause further enhancement in aridity in this drought-prone region by increasing the mean temperature and reducing the average annual rainfall in the near future. Other areas of Mexico are projected to receive less annual precipitation or the same amount but in shorter time periods. Ultimately, the knowledge of Holocene environmental change can provide society with clues for conservation, management, and adaptation of Mexico’s diverse environments.


4.
Artículo
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Phylogeography of the Mayan cichlid Mayaheros urophthalmus (Teleostei: Cichlidae) in the Yucatan Peninsula based on mitochondrial markers CYTB and COI
Barrientos Villalobos, Javier ; Schmitter Soto, Juan Jacobo (coaut.) ;
Contenido en: Environmental Biology of Fishes Vol. 102, no. 12 (December 2019), p. 1461-1472 ISSN: 1573-5133
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Resumen en inglés

The Yucatan Peninsula (YP) suffered several marine transgressions and regressions during the Quaternary, thus molding the distribution of its present biota, especially its freshwater fish fauna. The Mayan cichlid (Mayaheros urophthalmus Günther) isa euryhaline fish native to the Atlantic slope of Mexico and northern Central America, including the YP; it is one of the most widespread freshwater species in the region. Herein we discuss a phylogeographic scenario by which the Mayan cichlid may have reached its current distribution in the YP. A Bayesian analysis and minimum spanning network were inferred from two partial mitochondrial genes, Cytochrome b (CYTB) and Cytochrome c Oxidase I (COI). The two fragments showed genetic differentiation among populations (Fst=0.31, p value <0.001). Tajima’s D and Fu 's F revealed a tendency to the expansion of some populations. A consistent ordination of north vs south populations was observed. A spatial analysis of molecular variance (SAMOVA) was performed torecognize putative barriers among populations of M. urophthalmus. A secondary molecular calibration located the window time in which the dispersal event may have occurred during the Pleistocene, around 1 Mya. We determined that a Quaternary dispersal around the old coastlines from the south explains the current distribution of the Mayan cichlid.


5.
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Climate forcings on vegetation of the southeastern Yucatán Peninsula (Mexico) during the middle to late Holocene
Aragón Moreno, Alejandro Antonio ; Islebe, Gerald A. (coaut.) ; Roy, Priyadarsi D. (coaut.) ; Torrescano Valle, Nuria (coaut.) ; Mueller, Andreas D. (coaut.) ;
Contenido en: Palaeogeography, Palaeoclimatology, Palaeoecology Vol. 495 (April 2018), p. 214-226 ISSN: 0031-0182
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Resumen en inglés

Climate and vegetation history from the Yucatán Peninsula, southeastern Mexico, are inferred from a mangrove sediment core deposited between the middle and late Holocene (~5600–1700 cal yr B.P.) in the Rio Hondo Delta. Fossil pollen and concentrations of Ca and Fe and Ca/Fe ratio in sediments are used to record changes in vegetation and climate. Palaeoecological and palaeoclimatic interpretations obtained from pollen abundances and associations and Fe/Ca ratio coincide with dynamics of major global forcings of climate change like ITCZ, ENSO and global cooling. Mesic conditions enabled tropical forest expansion during the middle Holocene (~5600–3650 cal yr B.P.), although there were periodic dry episodes at ~5200 cal yr B.P. and at ~4300 cal yr B.P. that caused disturbance and enabled herbaceous vegetation to expand. Changes in sedi- mentation and a gradual change from semi-evergreen to dry tropical forest occurred at ~3650 cal yr B.P., with increasing ENSO activity and southward migration of the ITCZ during transition of the middle to late Holocene. The driest period and lowest forest cover occurred between ~2600 and 2000 cal yr B.P. Data show that over the last two millennia, influence of the ENSO on southeastern Mexico is stronger compared to other proxy-records of climate variability from the Caribbean region.


6.
- Artículo con arbitraje
Comparison of elemental concentration in near-surface late Holocene sediments and precipitation regimes of the Yucatán Peninsula (Mexico): a preliminary study
Roy, Priyadarsi D. (autor) ; Torrescano Valle, Nuria (autora) ; Escarraga Paredes, Diana del Socorro (autora) ; Vela Pelaez, Alejandro Antonio (autor) ; Lozano Santacruz, Rufino (autor) ;
Disponible en línea
Contenido en: Boletín Geológico y Minero Vol. 129, no. 4 (octubre-diciembre 2018), p. 693-706 ISSN: 0366-0176
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Resumen en: Español | Inglés |
Resumen en español

La investigación paleoclimática en la Península de Yucatán (YP) de México involucra principalmente el polen fósil preservado en archivos sedimentarios, mientras que la geoquímica ha recibido menos atención. En este estudio, se compararon las concentraciones de K, Ti, Fe, Ca y Sr, en 35 muestras superficiales de sedimento del Holoceno tardío, colectadas en un gradiente de precipitación entre 600-1600 mm/a, a lo largo de la YP, con el objetivo de establecer un testigo de la paleo-precipitación para la región. El origen calcáreo tiene un efecto de dilución en las concentraciones elementales, provocando que los sedimentos presenten baja cantidad de K, Ti y Fe (elementos asociados con clásticos) y mayor cantidad de Ca y Sr (elementos asociados con carbonato y evaporitas), en comparación con la corteza continental superior. Los elementos individuales y las relaciones de K/Ca, Ti/Ca y Fe/Ca en muestras con cantidades mínimas de clástico, no muestran una relación con la precipitación. Los valores promedio de la relación elemental en sedimentos con más clásticos, muestra tendencias positivas con la precipitación. No obstante, el protocolo de muestreo y la presencia de un mayor número de cuerpos de agua investigados en un simple aglomerado (p. ej. 1200-1400 mm/a) no permitió completar la evaluación de la correlación potencial entre precipitación y la relación elemental. Considerando que la concentración de Ti en los sedimentos ricos en calizas de la PY es bajo y el Fe es móvil en ambientes de depositación anóxicos, la relación K/Ca puede ser utilizada como un testigo preliminar para reconstruir la variación de la paleo-precipitación.

Resumen en inglés

Paleoclimate research in the Yucatán Peninsula of Mexico has mainly involved fossil pollen preserved in sedimentary archives whilst geochemistry has received limited attention. In this study, we compared concentrations of K, Ti, Fe, Ca and Sr in 35 near-surface late Holocene sediments collected from different permanent and seasonal water bodies across the peninsula with mean annual precipitation of 600-1600 mm in order to explore the relationship between concentrations of inorganic elements and precipitation. The calcareous provenance has a diluting effect and sediments have less K, Ti and Fe (associated with clastics) and more Ca and Sr (associated with carbonate and evaporite) compared to the Upper Continental Crust. Individual elements and ratios of K/Ca, Ti/Ca and Fe/Ca in samples with minimal clastics did not show any relationship with precipitation. Average values of elemental ratios in sediments with more clastics increase as the mean annual precipitation increases. However, the sampling protocol and presence of most of the sampled water bodies being in a single precipitation cluster (i.e. 1200-1400 mm/year) did not allow a complete evaluation of the potential correlation between precipitation and elemental ratios. Considering that the concentration of Ti is low in sediments of the limestone-rich Yucatán Peninsula and Fe is mobile in anoxic depositional environments, the K/Ca ratio can be used as a preliminary proxy to evaluate precipitation in sedimentary records.


7.
- Artículo con arbitraje
Middle and late Holocene mangrove dynamics of the Yucatan Peninsula, Mexico
Aragón Moreno, Alejandro Antonio ; Islebe, Gerald A. (coaut.) ; Torrescano Valle, Nuria (coaut.) ; Arellano Verdejo, Javier (coaut.) ;
Contenido en: Journal of South American Earth Sciences Vol. 85 (August 2018), p. 307-311 ISSN: 0895-9811
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Resumen en inglés

We present mangrove dynamics, related to precipitation changes derived from migration of the Intertropical Convergence Zone (ITCZ) and the El Niño Southern Oscillation (ENSO) during middle and late Holocene of the northern and southern Yucatan Peninsula. Sea level rise was the major determinant for mangrove establishment during middle Holocene. Following the sea level rate stabilization, changes in precipitation and increasing ENSO activity determined periods of expansion and reduction of mangrove cover. At the onset of late Holocene, mangroves fluctuated abruptly due the coupled effect of the ENSO and latitudinal movement of the ITCZ. Trend correlation analysis revealed significant relationship between the presence of Conocarpus erectus, ENSO and ITCZ. Rhizophora mangle showed a significant relationship with ITCZ based on trend correlation analysis. Expansion of mangrove populations in seasonally flooded wetlands is recorded during the late Holocene.


8.
- Artículo con arbitraje
Quaternary climate instability is correlated with patterns of population genetic variability in Bombus huntii
Koch, Jonathan B. (autor) ; Vandame, Rémy (autor) ; Mérida Rivas, Jorge Alfredo (autor) ; Sagot, Philippe (autor) ; Strange, James (autor) ;
Contenido en: Ecology and Evolution Vol. 8, no. 16 (Aug. 2018), p. 7849-7864 ISSN: 2045-7758
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Resumen en inglés

Climate oscillations have left a significant impact on the patterns of genetic diversity observed in numerous taxa. In this study, we examine the effect of Quaternary cli - mate instability on population genetic variability of a bumble bee pollinator species, Bombus huntii in western North America. Pleistocene and contemporary B. huntii habitat suitability (HS) was estimated with an environmental niche model (ENM) by associating 1,035 locality records with 10 bioclimatic variables. To estimate genetic variability, we genotyped 380 individuals from 33 localities at 13 microsatellite loci. Bayesian inference was used to examine population structure with and without a priori specification of geographic locality. We compared isolation by distance (IBD) and isolation by resistance (IBR) models to examine population differentiation within and among the Bayesian inferred genetic clusters. Furthermore, we tested for the effect of environmental niche stability (ENS) on population genetic diversity with linear regression. As predicted, high- latitude B. huntii habitats exhibit low ENS when compared to low- latitude habitats. Two major genetic clusters of B. huntii inhabit western North America: (a) a north genetic cluster predominantly distributed north of 28°N and (b) a south genetic cluster distributed south of 28°N. In the south ge - netic cluser, both IBD and IBR models are significant. However, in the north genetic cluster, IBD is significant but not IBR.

IBR. Furthermore, the IBR models suggest that low- latitude montane populations are surrounded by habitat with low HS, possibly limit - ing dispersal, and ultimately gene flow between populations. Finally, we detected high genetic diversity across populations in regions that have been climatically unsta - ble since the last glacial maximum (LGM), and low genetic diversity across popula - tions in regions that have been climatically stable since the LGM. Understanding how species have responded to climate change has the potential to inform management and conservation decisions of both ecological and economic concerns.


9.
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Late Holocene hydroclimate of the western Yucatan Peninsula (Mexico)
Priyadarsi, D. Roy ; Torrescano Valle, Nuria (coaut.) ; Islebe, Gerald A. (coaut.) ; Gutiérrez Ayala, Luz Verónica (coaut.) ;
Contenido en: Journal of Quaternary Science Vol. 32, no. 8 (Noviembre 2017), p. 1112–1120 ISSN: 0267-8179
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Resumen en: Inglés |
Resumen en inglés

Chemical composition, magnetic susceptibility and texture of sediments in a swamp from the Los Petenes Biosphere Reserve provide information about late Holocene hydrological variations on the western margin of the Yucatan Peninsula, Mexico. Periods of lower than average amounts of K-bearing clastics during 2580–2050, 1100–825 and 700–160 cal a BP represent drought intervals. Magnetic minerals were better preserved during these arid intervals, as the swamp was not perennially anoxic. Hydroclimate was unstable during 2580–2050 cal a BP, as several storm-surge events occurred within an overall arid interval. The drought of 1100–825 cal a BP was contemporary with the Terminal Classic Period and the drought of 700–160 cal a BP was characterized by the lowest erosion as well as highest abundance of authigenic carbonate. Comparison with other climate proxy records from the region suggests that droughts had different geographic coverage. We attribute the different geographic coverage of droughts to variable strengths of polar continental air masses as well as dynamics of the Caribbean Low Level Jet and tropical cyclones that brought precipitation into different parts of the peninsula.


10.
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Clima y vegetación de la costa de Chiapas durante el holoceno medio y tardío
Joo Chang, Juan Carlos (autor) ; Islebe, Gerald A. (autor) ; Torrescano Valle, Nuria (autora) ;
Contenido en: Reserva de la Biosfera La Encrucijada: dos décadas de investigación para su conservación / Ernesto Velázquez Velázquez, Emilio Ismael Romero Berny, Gustavo Rivera Velázquez (editores) Tuxtla Gutiérrez, Chiapas, México : Universidad de Ciencias y Artes de Chiapas, 2016 páginas 89-104 ISBN:978-607-8477-00-5
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