A5000161772- Genetic diversity and population structure
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Avian ecology and behavior
- Evolution and Paleontology Studies
- Ecology and Vegetation Dynamics Studies
- Wildlife-Road Interactions and Conservation
- Animal Behavior and Reproduction
- Lepidoptera: Biology and Taxonomy
- Identification and Quantification in Food
- Environmental and Ecological Studies
- Fish biology, ecology, and behavior
- Plant and animal studies
- Water Resource Management and Quality
- Environmental and Cultural Studies in Latin America and Beyond
- Bat Biology and Ecology Studies
- Ichthyology and Marine Biology
- Cocoa and Sweet Potato Agronomy
- Insect and Arachnid Ecology and Behavior
- Turtle Biology and Conservation
- Marine Ecology and Invasive Species
- Mediterranean and Iberian flora and fauna
- Scarabaeidae Beetle Taxonomy and Biogeography
- Animal Ecology and Behavior Studies
- Genomics and Phylogenetic Studies
Bernardino Rivadavia Natural Sciences Museum
2014-2024
Alexander von Humboldt Biological Resources Research Institute
2016-2024
Industrial University of Santander
2019-2021
Consejo Nacional de Investigaciones Científicas y Técnicas
2016-2020
University of Quindío
2014-2016
The effects of global glaciations on the distribution organisms is an essential element many diversification models. However, empirical evidence supporting this idea mixed, in particular with respect to explaining tropical forest evolution. In present study, we evaluated impacts range shifts associated Pleistocene glacial cycles evolution forests. particular, tested predictions: (1) that population genetic structure increases fragmentation variation between and Last Glacial Maximum (LGM)...
The Atlantic Forest is separated from the Andean tropical forest by dry and open vegetation biomes (Chaco Cerrado). Despite this isolation, both rainforests share closely related lineages, which suggest a past connection. This connection could have been important for taxa evolution. In study, we used Saffron-billed Sparrow (Arremon flavirostris) as model to evaluate whether forests act refugia system, well test history of biogeographic between them. addition, evaluated molecular systematic...
Abstract Colombia is the country with largest number of bird species worldwide, yet its avifauna seriously threatened by habitat degradation and poaching. We built a DNA barcode library nearly half listed in CITES appendices for Colombia, thereby constructing identification reference that will help global efforts controlling illegal trade. obtained COI sequence 151 based on 281 samples, representing 46% registered Colombia. The analysed belong to nine families, where Trochilidae Psittacidae...
Abstract We studied the phenotypic variation of Atlantic Forest passerine Xiphorhynchus fuscus (Aves: Dendrocolaptidae) with broad aim addressing whether history and type forest affected evolution endemic taxa. also tested different subspecies genetic lineages X. could be considered full species. collected plumage body size measurements and, in combination data, used multivariate tests to evaluate working hypotheses. Our results, combined previous biogeographic analyses, indicate that...
White-crested Elaenia (Elaenia albiceps chilensis) is a Neotropical austral migrant that sexually monomorphic in plumage. We first determined whether the brood patch and cloacal protuberance are good indicators of an individual's sex by comparing these characters with individuals sexed using molecular techniques. Second, at several localities encompassing 1500 km latitudinal gradient across breeding range, we evaluated morphological measurements can be used for determination, discriminant...
The Black-goggled Tanager (Trichothraupis melanops) is a South American forest species that comprises two disjunct populations in the Atlantic Forest and Andes. During visits to natural history museums, we noticed morphological differences between these populations, which led taxonomic revision of based on plumage patterns morphometry. Our analyses revealed both are fully diagnosable, Andean population represents an undescribed taxon, name Trichothraupis griseonota sp. nov. new taxon differs...
The sea turtle Eretmochelys imbricata inhabits tropical waters of all oceans. IUCN considers this species to be critically endangered and its populations are affected by illegal international shell traffic. We present a pioneer research for Colombia the Tropical Eastern Pacific, since located in 1) Parque Nacional Natural Gorgona, 2) Corales del Rosario y San Bernardo, 3) Cabo de la Vela (Guajira) were genetically characterized using mtDNA control region sequences. Two new haplotypes Pacific...
The Andes constitute one of the main factors that have promoted diversification in Neotropics. However, role other highland regions southern cone South America has been barely studied. We analyzed level endemism avifauna Central Sierras Córdoba, a high region central Argentina, to evaluate effect its geographic isolation from Andes. There are 11 species with endemic subspecies this region, all them described based only on differences morphology (mainly plumage color) no genetic evidence....
Colombia is the country with largest number of bird species worldwide, yet its avifauna seriously threatened by habitat degradation and poaching. We built a DNA barcode library nearly half listed in CITES appendices for Colombia, thereby constructing identification reference that will help global efforts controlling illegal trade.
Neotropical humid montane forest (HMF) is divided by landform discontinuities which could limit gene flow among populations. The northern Andes a complex system and an excellent region to compare the role of dividing HMFs on phylogeography bird species. We study phylogeographic patterns seven HMF species in western slope eastern Cordillera test whether structure coincides with presence two discontinuities. sequenced analyzed mitochondrial DNA locus from individuals collected localities both...
We report on the capture of an adult male Rufous-tailed Attila (Attila phoenicurus) in Mburucuyá National Park, Corrientes, Argentina. This is first record for this protected area, and also province. Records species are scarce Argentina, where it had been registered previously only Misiones Populations believed to be declining, considered a “threatened species” If confirmed, regular presence perhaps even breeding Park would extend species’ distribution range approximately 200 km southwest,...
Several of the first avifaunal surveys in Colombia were conducted lowland moist forests Middle Magdalena Valley, but for decades this region has been understudied. We present results an survey a zone Cantagallo, Bolívar, (Jun–Jul 2019), based on collection voucher specimens, associated tissue samples, and observational records. report 165 species, 77 which are represented with 266 specimens. found that nearest documented records 7 species more than 100 km away. Moreover, our bridges...
The climatic cycles of the Pleistocene affected distribution vegetation different biomes, determining and evolution associated fauna. Many studies Atlantic Forest (AF) organisms suggest that glacial interglacial have produced demographically stable populations in forest’s central region unstable its southern regions (known as Carnaval-Moritz model). We studied phylogeographic structure an AF passerine, Black-goggled Tanager (Trichothraupis melanops, Thraupidae) evaluated questions related to...
El Gran Chaco integra la diagonal Neotropical de formaciones abiertas y es objeto fundamental en hipótesis conexiones pasadas entre Selva Atlántica, Amazonía las Yungas. objetivo esta investigación fue evaluar si el escenario expansión bosques higrófilos durante fluctuaciones climáticas del Pleistoceno, que podrían haber conectado Atlántica Yungas su sector meridional (Selva Tucumano-Boliviana). Para poner a prueba se utilizó como modelo estudio un ave endémica chaqueña, Monterita Cabeza...
Tropical forests of Colombia have one the highest deforestation rates in world. The humid forest Magdalena valley region is ecosystems with risk landscape transformation, despite being home to many endemic and threatened species. aim this study was evaluate role a Peasant Reserve Zone conservation tropical endangered species region. To reach aim, we performed multi-temporal analysis dynamics Zone-Cimitarra River Valley (PRZ-CRV) assessed extinction eight Colombia. Our outcomes indicated that...