Structure analysis of the La Guajira-Colombia population: A genetic, demographic and genealogical overview

Rojas, Maria; Alonso, Luz Angela; Sarmiento, Valladarez; Eljach, Leonardo; Usaquén, William

doi:10.3109/03014460.2012.748093

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…The Wayúu indigenous people speak a language belonging to the Arawak linguistic family, called Wayuunaiki , the Zenú ; on the other hand, despite retaining a lot of their ancestral knowledge, they lost their language soon after the conquest (Arrieta, 2007). Furthermore, the Wayúu people are widely known for the preservation of their culture, and it has been shown that despite there being a high level of admixture and gene flow within their population, they do differentiate genetically from other admixed populations that inhabit the same territory, which suggests the influence of a cultural barrier (Rojas, Alonso, Sarmiento, Eljach, & Usaque, 2013).…”

Section: Discussionmentioning

confidence: 99%

Contrasting the ancestry patterns of three distinct population groups from the northernmost region of South America

Olivares

Madero

Casas-Vargas

et al. 2020

American J Phys Anthropol

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Colombia, located in the north of the South American subcontinent is a country of great interest for population genetic studies given its high ethnic and cultural diversity represented by the admixed population, 102 indigenous peoples and African descent populations. In this study, an analysis of the genetic structure and ancestry was performed based on 46 ancestry informative INDEL markers (AIM-INDELs) and considering the genealogical and demographic variables of 451 unrelated individuals belonging to nine Native American, two African American, and four multiple ancestry populations. Measures of genetic diversity, ancestry components, and genetic substructure were analyzed to build a population model typical of the northernmost part of the South American continent. The model suggests three types of populations: Native American, African American, and multiple ancestry. The results support hypotheses posed by other authors about issues like the peopling of South America and the existence of two types of Native American ancestry. This last finding could be crucial for future research on the peopling of Colombia and South America in that a single origin of all indigenous communities should not be assumed. It then would be necessary to consider other events that could explain their genetic variability and complexity throughout the continent.

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Section: Discussionmentioning

confidence: 99%

Contrasting the ancestry patterns of three distinct population groups from the northernmost region of South America

Olivares

Madero

Casas-Vargas

et al. 2020

American J Phys Anthropol

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“…Approximately 25% of participants agreed to take part in this genealogical survey, adding a unique dimension to the CARTaGENE project. Indeed, genealogies have proven to be a useful tool to better understand the genetic structure of a population (Abney, 2008;Bherer et al, 2011;Colonna et al, 2009;Gauvin et al, 2014;Larmuseau et al, 2013;Newman et al, 2001;Rojas et al, 2013;Roy-Gagnon et al, 2011;Zaitlen et al, 2013). Considering that the CARTaGENE participants came from four distinct geographical regions of the province of Quebec, a detailed analysis of their genealogical characteristics may bring new insights about the specificities of each regional population.…”

Section: Introductionmentioning

confidence: 99%

Deep genealogical analysis of a large cohort of participants in the CARTaGENE project (Quebec, Canada)

Tremblay

Rouleau

2017

Annals of Human Biology

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“…The area's vegetation consists typically of small trees, rigid stunted perennial bushes, and thorny shrubs. The area is primarily inhabited by the indigenous communities who settled there some 5000 years ago, and have adapted to the harsh surroundings [3]. The peninsula's climate is characterized by the lack of thermal seasons, strong winds, irregular precipitation, and temperatures that can reach highs of between 28 and 33 • C [4].…”

Section: Introductionmentioning

confidence: 99%

The Use of High-Resolution Historical Images to Analyse the Leopard Pattern in the Arid Area of La Alta Guajira, Colombia

2018

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A recent review of global arid areas supports the idea that there are two patterns to vegetation in arid lands. Patches of thick vegetation alternate with those with much less vegetation or none at all. There is a specific size, shape and spatial distribution that characterizes vegetation patterns in arid land ecosystems. In some places, the patches have irregular shapes; these are called spots or Leopard bush. This research project is based on a biophysical approach that integrates information collected in the field, high resolution historical satellite images and Geographical Information System technology. The results revealed that there were certain places in the landscape that facilitate the singular development of the vegetation. The Leopard pattern results from the interaction of various factors (fertility island, fragmentation of vegetation, anthropic influence, herbivorism). Specific characteristics that limit plant life forms are found in the area; since only certain resistant species develop, these form associations and in turn generate strategies to optimize resources. Eventually, this equilibrium is disturbed by human activities in the shape of ungulate livestock breeding and anthropogenic activities, resulting in a heterogeneity of soils and vegetation whose interaction generates the pattern.

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Structure analysis of the La Guajira-Colombia population: A genetic, demographic and genealogical overview

Abstract: This study found a high level of admixture and gene flow within the Wayúu population despite cultural differences. Thus, although the Wayúu population differs from other population groups, it is not an isolated population.

Cited by 7 publications

References 31 publications

Contrasting the ancestry patterns of three distinct population groups from the northernmost region of South America

Contrasting the ancestry patterns of three distinct population groups from the northernmost region of South America

Deep genealogical analysis of a large cohort of participants in the CARTaGENE project (Quebec, Canada)

The Use of High-Resolution Historical Images to Analyse the Leopard Pattern in the Arid Area of La Alta Guajira, Colombia

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