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Aztec Conquest Altered Genetics among Early Mexico Inhabitants, New DNA Study Shows

By Guest PostFebruary 3, 2013Science1395 ad, adna, alter, ancient dna, anthropological research, archeological dig, austin, aztec conquest, aztec empire, aztec imperialism, capital, case of xaltocan, colonization, dna study, early mexico inhabitants, exodus, genetic evidence, genetic impact, genetic shift, genetic transition, genetics, historical events, imperial conquest, jaime mata míguez, lisa overholtzer, mesoamerican populations, mexican city state, migration, mitochondrial adna, otomi inhabitants, otomi people, otomi population, otomi skull, post conquest era, pre aztec, university of texas, washington state university, wichita state university, xaltocan, xaltocan dig site, xaltocan households

AUSTIN, Texas — For centuries, the fate of the original Otomí inhabitants of Xaltocan, the capital of a pre-Aztec Mexican city-state, has remained unknown. Researchers have long wondered whether they assimilated with the Aztecs or abandoned the town altogether.

According to new anthropological research from The University of Texas at Austin, Wichita State University and Washington State University, the answers may lie in DNA. Following this line of evidence, the researchers theorize that some original Otomies, possibly elite rulers, may have fled the town. Their exodus may have led to the reorganization of the original residents within Xaltocan, or to the influx of new residents, who may have intermarried with the Otomí population. (more…)

Invading Species Can Extinguish Native Plants Despite Recent Reports

By Guest PostJanuary 10, 2013Environment, Naturebenjamin gilbert, california, colonization, ecologist, eeb, effect of invasion, eth zurich, extinction dynamics, federal institute, habitat, initial invasion, invaded ecosystem, invading exotic plants, invasive grass, james cornwell, jonathan levine, local extinction, native biodiversity, native habitat, native plants, non native species, pnas, quantitative model, sea of exotics, species, species to extinction, swiss, technology zurich, university of toronto, wild

TORONTO, ON – Ecologists at the University of Toronto and the Swiss Federal Institute of Technology Zurich (ETH Zurich) have found that, given time, invading exotic plants will likely eliminate native plants growing in the wild despite recent reports to the contrary.

A study published in Proceedings of the National Academy of Sciences (PNAS) reports that recent statements that invasive plants are not problematic are often based on incomplete information, with insufficient time having passed to observe the full effect of invasions on native biodiversity. (more…)

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Aztec Conquest Altered Genetics among Early Mexico Inhabitants, New DNA Study Shows

Invading Species Can Extinguish Native Plants Despite Recent Reports