Alex Correa-Metrio
Datos Biográficos
| ID | 4640367 |
|---|---|
| NOMBRE | Alex Correa-Metrio |
| NOMBRES | Alex |
| APELLIDO | Correa-Metrio |
| FIRMA | CORREA-METRIO A |
| AFILIACIONES | Universidad Nacional Autonoma de Mexico |
| ORCID | 0000-0002-1278-2746 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 6 |
| TOTAL DE CITAS | 6 |
| OBRAS COMO AUTOR | 6 |
| OBRAS COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2011 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2025 |
| ÍNDICE H | 1 |
The environmental signal of lake sediments in Mesoamerica
Lake sediment composition depends on the environmental context where sediments are produced, transported, and deposited. Factors involved in sedimentary processes imprint specific signatures on sediments, thus providing evidence on the environmental context at the time of deposition. The interaction of the involved factors and processes, however, results in complex signals that in some instances are difficult to interpret. Here, we explore and qu…
Ecological turnover in neotropical freshwater and terrestrial communities during episodes of abrupt climate change
The last 85,000 years were characterized by high climate and environmental variability on the Yucatán Peninsula. Heinrich stadials are examples of abrupt climate transitions that involved shifts in regional temperatures and moisture availability. Thus, they serve as natural experiments to evaluate the contrasting responses of aquatic and terrestrial ecosystems. We used ostracodes and pollen preserved in a 75.9-m-long sediment core (PI-6, ~85 ka) …
The environmental impact of a pre-Columbian city based on geochemical insights from lake sediment cores recovered near Cahokia
Cahokia is the largest documented urban settlement in the pre-Columbian United States. Archaeological evidence suggests that the city, located near what is now East St. Louis, Illinois, began to rapidly expand starting around AD 1050. At its height, Cahokia extended across 1000 ha and included large plazas, timber palisade walls, and hundreds of monumental earthen mounds. Following several centuries of occupation, the city experienced a period of…
Holocene environmental history of tropical, mid-altitude Lake Ocotalito, México, inferred from ostracodes and non-biological indicators
This paleolimnological study used ostracodes assemblages, element concentrations, organic and inorganic carbon content, organic C:N ratios, and stable isotope values in valves of the ostracodes Cytheridella ilosvayi as paleoindicators and is the first such investigation from a mid-elevation site in southern México. We provide a ~7600-year (9540–1970 BP) environmental history from karst Lake Ocotalito (920 m a.s.l.), which lies in the Lacandon For…
Paleoclimate support for a persistent dry island effect in the Colombian Andes during the last 4700 years
We investigated middle- and late-Holocene hydroclimate patterns in the Colombian Andes using indicators of watershed erosion (lithic abundance), precipitation intensity (% silt), lake-level variability (organic carbon and nitrogen, % sand, and diatoms), and fire frequency (fossil charcoal) from a ~4700-year-long sediment archive from Laguna de Ubaque, a small sub-alpine lake on the eastern flank of the eastern Colombian Andes. Our results indicat…
Pollen distribution along climatic and biogeographic gradients in northern Central America
Environmental reconstructions based on fossil pollen rely on the understanding of modern pollen distribution along climatic and biogeographic gradients. This study analyses the modern pollen spectra of Central America using three basic approaches: (1) the evaluation of using modern pollen spectra to differentiate the main vegetation types of the region, (2) the usage of non-linear regression to predict individual pollen abundances as a function o…
Pollen distribution along climatic and biogeographic gradients in northern Central America
Environmental reconstructions based on fossil pollen rely on the understanding of modern pollen distribution along climatic and biogeographic gradients. This study analyses the modern pollen spectra of Central America using three basic approaches: (1) the evaluation of using modern pollen spectra to differentiate the main vegetation types of the region, (2) the usage of non-linear regression to predict individual pollen abundances as a function o…
Paleoclimate support for a persistent dry island effect in the Colombian Andes during the last 4700 years
We investigated middle- and late-Holocene hydroclimate patterns in the Colombian Andes using indicators of watershed erosion (lithic abundance), precipitation intensity (% silt), lake-level variability (organic carbon and nitrogen, % sand, and diatoms), and fire frequency (fossil charcoal) from a ~4700-year-long sediment archive from Laguna de Ubaque, a small sub-alpine lake on the eastern flank of the eastern Colombian Andes. Our results indicat…
Pollen distribution along climatic and biogeographic gradients in northern Central America
Environmental reconstructions based on fossil pollen rely on the understanding of modern pollen distribution along climatic and biogeographic gradients. This study analyses the modern pollen spectra of Central America using three basic approaches: (1) the evaluation of using modern pollen spectra to differentiate the main vegetation types of the region, (2) the usage of non-linear regression to predict individual pollen abundances as a function o…
Holocene environmental history of tropical, mid-altitude Lake Ocotalito, México, inferred from ostracodes and non-biological indicators
This paleolimnological study used ostracodes assemblages, element concentrations, organic and inorganic carbon content, organic C:N ratios, and stable isotope values in valves of the ostracodes Cytheridella ilosvayi as paleoindicators and is the first such investigation from a mid-elevation site in southern México. We provide a ~7600-year (9540–1970 BP) environmental history from karst Lake Ocotalito (920 m a.s.l.), which lies in the Lacandon For…
Paleoclimate support for a persistent dry island effect in the Colombian Andes during the last 4700 years
We investigated middle- and late-Holocene hydroclimate patterns in the Colombian Andes using indicators of watershed erosion (lithic abundance), precipitation intensity (% silt), lake-level variability (organic carbon and nitrogen, % sand, and diatoms), and fire frequency (fossil charcoal) from a ~4700-year-long sediment archive from Laguna de Ubaque, a small sub-alpine lake on the eastern flank of the eastern Colombian Andes. Our results indicat…
The environmental impact of a pre-Columbian city based on geochemical insights from lake sediment cores recovered near Cahokia
Cahokia is the largest documented urban settlement in the pre-Columbian United States. Archaeological evidence suggests that the city, located near what is now East St. Louis, Illinois, began to rapidly expand starting around AD 1050. At its height, Cahokia extended across 1000 ha and included large plazas, timber palisade walls, and hundreds of monumental earthen mounds. Following several centuries of occupation, the city experienced a period of…
Ecological turnover in neotropical freshwater and terrestrial communities during episodes of abrupt climate change
The last 85,000 years were characterized by high climate and environmental variability on the Yucatán Peninsula. Heinrich stadials are examples of abrupt climate transitions that involved shifts in regional temperatures and moisture availability. Thus, they serve as natural experiments to evaluate the contrasting responses of aquatic and terrestrial ecosystems. We used ostracodes and pollen preserved in a 75.9-m-long sediment core (PI-6, ~85 ka) …
The environmental signal of lake sediments in Mesoamerica
Lake sediment composition depends on the environmental context where sediments are produced, transported, and deposited. Factors involved in sedimentary processes imprint specific signatures on sediments, thus providing evidence on the environmental context at the time of deposition. The interaction of the involved factors and processes, however, results in complex signals that in some instances are difficult to interpret. Here, we explore and qu…
Geography (6 obras) · Geology and Paleoclimatology Research (6 obras) · Geology (4 obras) · Isotope Analysis in Ecology (4 obras) · Physical geography (4 obras) · Biology (3 obras) · Climate change (3 obras) · Ecology (3 obras) · Holocene (3 obras) · Oceanography (3 obras)