Eugenio Valderrama

Eugenio Valderrama
Cornell University | CU · College of Agriculture and Life Sciences

PhD

About

20
Publications
10,693
Reads
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196
Citations
Additional affiliations
October 2011 - June 2016
The University of Edinburgh
Position
  • PhD Student
October 2011 - June 2016
Royal Botanic Garden Edinburgh
Position
  • PhD Student
January 2008 - December 2010
Los Andes University (Colombia)
Position
  • Estudiante MSc

Publications

Publications (20)
Article
Full-text available
AimTo examine the effect of geographical barriers and habitat dynamics related to climatic oscillations on the phylogeography of a widespread passerine of Neotropical cloud forests, the spotted barbtail (Premnoplex brunnescens).LocationNeotropical humid forests of montane areas in lower Central America and South America.Methods We sequenced two mit...
Article
The reconstruction of species rich groups that have recently evolved in biodiversity hotspots is hampered by a lack of phylogenetically informative markers. It is also made difficult by the lack of sampling necessary to reconstruct a species-level phylogeny. We use transcriptome mining to search for markers to reconstruct a phylogeny of the amphi-A...
Article
Full-text available
Attempts at historical reconstruction are based on limited data. We are more likely to produce accurate historical reconstructions by utilizing information from diverse sources and pooling data within the relevant research communities which will allow us to build up a moving picture of the geological, climatic, and biological evolution of our plane...
Article
Full-text available
Body height is a life-history component. It involves important costs for its expression and maintenance, which may originate trade-offs on other costly components such as reproduction or immunity. Although previous evidence has supported the idea that human height could be a sexually selected trait, the explanatory mechanisms that underlie this sel...
Article
Full-text available
The family of pantropical spiral gingers (Costaceae Nakai; c. 125 spp.) can be used as a model to enhance our understanding of the mechanisms underlying Neotropical diversity. Costaceae has higher taxonomic diversity in South and Central America (c. 72 Neotropical species, c. 30 African, c. 23 Southeast Asian), particularly due to a radiation of Ne...
Article
Full-text available
The COVID-19 pandemic has increased negative emotions and decreased positive emotions globally. Left unchecked, these emotional changes might have a wide array of adverse impacts. To reduce negative emotions and increase positive emotions, we tested the effectiveness of reappraisal, an emotion-regulation strategy that modifies how one thinks about...
Article
Full-text available
Over the past 10 years, Oosterhof and Todorov’s valence–dominance model has emerged as the most prominent account of how people evaluate faces on social dimensions. In this model, two dimensions (valence and dominance) underpin social judgements of faces. Because this model has primarily been developed and tested in Western regions, it is unclear w...
Data
This R Markdown document contains the code and analyses for "Self-reported Health is Related to Body Height and Waist Circumference in Rural Indigenous and Urbanised Latin-American Populations" (2020). Data available at https://doi.org/10.17605/OSF.IO/KGR5X.
Preprint
Full-text available
Over the last ten years, Oosterhof and Todorov’s valence-dominance model has emerged as the most prominent account of how people evaluate faces on social dimensions. In this model, two dimensions (valence and dominance) underpin social judgments of faces. Because this model has primarily been developed and tested in Western regions, it is unclear w...
Preprint
Full-text available
Body height is a life-history component. It involves important costs for its expression and maintenance, which may originate trade-offs on other costly components such as reproduction or immunity. Although previous evidence has supported the idea that human height could be a sexually selected trait, the explanatory mechanisms that underlie this sel...
Article
1.In 1973 the statistician Francis Anscombe used a clever set of bivariate datasets (now known as Anscombe's quartet) to illustrate the importance of graphing data as a component of statistical analyses. In his example, each of the four datasets yielded identical regression coefficients and model fits, and yet when visualized revealed strikingly di...
Thesis
The well-known high species richness of the tropical forests is not uniform through its different regions; Africa is species-poor when compared to Southeast Asia and the Neotropical region. One of the hypotheses for differences between the richness in the Neotropics and Africa points to the importance of recent speciation in the Neotropics. This is...
Chapter
Lake Fúquene is the second largest high altitude lake in Colombia and it is very important for the survival and prosperity of the inhabitants of its catchment area. Additionally, Fúquene harbors endemic and threatened fauna and flora, and it is a key habitat for migratory bird species. This wetland supports fish stocks, provides water for human con...
Article
Full-text available
Megascops screech-owls are endemic to the New World and range from southern Canada to the southern cone of South America. The 21 currently recognized Megascops species occupy a wide range of habitats and elevations, from desert to humid montane forest, and from sea level to the Andean tree line. Species and subspecies diagnoses of Megascops are not...
Article
Full-text available
Species diversity is unequally distributed across the globe, with the greatest concentration occurring in the tropics. Even within the tropics, there are significant differences in the numbers of taxa found in each continental region. Manilkara is a pantropical genus of trees in the Sapotaceae comprising c. 78 species. Its distribution allows for b...
Article
Full-text available
Species diversity is unequally distributed across the globe, with the greatest concentration occurring in the tropics. Even within the tropics, there are significant differences in the numbers of taxa found in each continental region. Manilkara is a pantropical genus of trees in the Sapotaceae comprising c. 78 species. Its distribution allows for b...

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Projects

Projects (3)
Project
This project aims at identifying if there are, and which are, the acoustic variables of the voice, face morphometrics, and body odour, that are robustly associated with health indicators, function as signals of the individual's health status and genetic quality, and play an important role in the processes of selection of partners in humans. Specific goals: 1. To determine which facial morphometric and vocal acoustic characteristics correlate with individuals' health indicators. 2. To determine if there is a positive correlation between the robust expression of sexual characteristics, levels of T or E2, and health scores. 3. To determine if the body odour of healthy individuals is perceived as more attractive, masculine/feminine and healthy. 4. To determine if the perception of attractiveness and health in faces and voices is mediated by T and E2 levels of the stimulus. 5. To determine if the facial morphometric characteristics and vocal acoustics correlated with health indicators of the individuals, are preferably selected and perceived as more attractive. 6. To establish whether the most masculine or feminine average faces manipulated to express sexually dimorphic characteristics in a robust way, are perceived as more attractive and healthier.
Project
Latin American biogeography and biodiversity
Project
We are developing face manipulation process, that will potentially allow us to experimentally identify how cortical face processing is affected by relevant signals such as attractiveness, sex, and dominance.