Juan M. Daza

Juan M. Daza
University of Antioquia | UdeA · Instituto de Biología

PhD

About

112
Publications
62,234
Reads
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1,794
Citations
Introduction
Juan M. Daza currently works at the Instituto de Biología, University of Antioquia in Colombia. Juan does research in Molecular phylogenetics, Biogeography and Ecoacoustics.
Additional affiliations
June 2010 - January 2016
University of Antioquia
Position
  • Professor (Assistant)
June 2010 - April 2017
University of Antioquia
Position
  • Professor

Publications

Publications (112)
Article
Full-text available
Tropical ecosystems with high levels of endemism are under threat due to climate change and deforestation. The conservation actions are urgent and must rely on a clear understanding of landscape heterogeneity from transformed landscapes. Currently, passive acoustic monitoring uses the soundscape to understand the dynamics of biological communities...
Article
The genus Anadia (family Gymnophthalmidae) consists of 19 species. It has remained almost taxonomically stable for decades, scarcely observed, in addition to being one of the less sampled gymnophthalmid genera with respect to molecular phylogenies. New Anadia species are discovered at a relatively low pace, and few specimens are found in the field,...
Article
Full-text available
Characterising genetic divergence, and documenting phenotypic attributes in species are essential to understanding how evolution works in the context of geographic patterns. Here, we established the phylogenetic relationships of new specimens, estimated the genetic variation and documented vocalisations of Pristimantis jaguensis, a colourful specie...
Article
Allopatric speciation has been posed as the main mechanism affecting amphibian diversification. In contrast, the role of alternative mechanisms such as ecological speciation has received less attention, and empirical evidence of this mechanism in shaping species richness gradients remains elusive in the tropics. Highly heterogeneous landscapes can...
Article
Full-text available
Artículo Hábitat y espectro acústico como factores determinantes de la ocupación de anuros neotropicales Habitat and acoustic spectrum as determinant factors of the occupation of neotropical anurans , Juan Manuel Daza Rojas. Resumen Empleando modelos de ocupación, se evaluaron cinco variables (cuatro del paisaje y una del paisaje acústico) como pre...
Article
The Terrarana frogs of the genus Pristimantis are acknowledged for their direct development into froglets and for their astonishing species richness, which renders it the anuran genus with the highest number of species. We describe a new species of Pristimantis from the northwestern Andes of Colombia. The species is distributed from an area between...
Article
The Neotropics harbors a tremendous diversity of cockroaches yet their evolutionary history is largely unknown. We reconstructed for the first time the phylogeny of the Neotropical genus Xestoblatta Hebard using mitochondrial and nuclear genes from 12 species distributed in Central America and northern South America. Additionally, we conducted a mo...
Article
Full-text available
Cryptosporidium is a leading cause of waterborne outbreaks globally, and Cryptosporidium hominis and C. parvum are the principal cause of human cryptosporidiosis on the planet. Thanks to the advances in Next-Generation Sequencing (NGS) sequencing and bioinformatic software development, more than 100 genomes have been generated in the last decade us...
Article
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Based on collected specimens and phylogenetic information, we provide the first record of the Colombian red eyed tree frog, Agalychnis terranova, from the Sierra Nevada de Santa Marta in northern Colombia. This species is known from several localities on the middle Magdalena river valley and the Pacific lowlands. With this new record, the known geo...
Data
Table 1S. Known distribution of Agalychnis terranova in Colombia Table 2S. Genbank accession numbers corresponding to the 16S ribosomal fragment used in the phylogenetic analysis
Article
Full-text available
tSoundscape research has acquired a paramount role in biodiversity conservation as it may provide timelyand reliable information about the ecological integrity. The relationship between soundscape complexityand ecological integrity in highly biodiverse environments, as well as the factors affecting this relation-ship require a thorough understandin...
Article
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Continuous sampling in well studied areas may lead to new amphibian species discoveries, because population dynamics allow rare species to go unnoticed for years. Based on recent sampling of frogs in the northeastern region of Colombia, here we provide genetic, morphological, and bioacoustics evidence to support the description of a new species of...
Article
Full-text available
In the last decade, understanding of the Neotropical lizards family Gymnophthalmidae has changed dramatically with the recognition of several new genera, resolution of non-monophyly, definition of previously unknown lineages and refined biogeographic hypotheses. Recent field explorations on the northern Cordillera Central in Colombia uncovered two...
Article
Full-text available
Rainfall is one of the most predominant geophonic sources in nature, and the major climatic phenomenon influencing species biology in tropical ecosystems. Although its effects on acoustic indices have been studied, rainfall is recognized as a nuisance factor affecting their estimation. Consequently, files with rainfall sounds are typically removed...
Article
The family Gymnophthalmidae is a highly diverse Neotropical lizard clade. Although multiple phylogenetic and taxonomic studies have reshaped our understanding of gymnophthalmid systematics and diversity, many groups remain understudied. This is the case for the cercosaurine genus Echinosaura, which includes eight species of small riparian lizards d...
Article
Full-text available
The family Gymnophthalmidae is a highly diverse Neotropical lizard clade. Although multiple phylogenetic and taxonomic studies have reshaped our understanding of gymnophthalmid systematics and diversity, many groups remain understudied. This is the case for the cercosaurine genus Echinosaura, which includes eight species of small riparian lizards d...
Article
Full-text available
Convergent evolution is often documented in organisms inhabiting isolated environments with distinct ecological conditions and similar selective regimes. Several Central America islands harbor dwarf Boa populations that are characterized by distinct differences in growth, mass, and craniofacial morphology, which are linked to the shared arboreal an...
Chapter
Full-text available
El bosque seco tropical (bs-T) en Colombia es un ecosistema relativamente reciente y está asociado a eventos geológicos relacionados al levantamiento de los Andes. Las características áridas del bosque seco lo hacen muy interesante en términos del origen y diversificación de su biota, particularmente en el caso de los anfibios y reptiles. Estos ver...
Article
The frogs of the genus Pristimantis are recognized for their characteristic reproductive mode and for their incredible diversity of species, becoming the genus with the highest number of species within tetrapod vertebrates. We describe here a new species of Pristimantis from the northwestern Andes of Colombia. The species was found between 2000-250...
Article
Full-text available
The frogs of the genus Pristimantis are recognized for their characteristic reproductive mode and for their incredible diversity of species, becoming the genus with the highest number of species within tetrapod vertebrates. We describe here a new species of Pristimantis from the northwestern Andes of Colombia. The species was found between 2000- 25...
Chapter
Full-text available
El estudio de paisajes sonoros es una oportunidad costo efectiva de investigar los procesos que afectan la diversidad biológica de un ecosistema, ofreciendo nuevas herramientas para el manejo del territorio y abriendo perspectivas para atraer otro tipo de público interesado en la conservación.
Book
Full-text available
Los anfibios y reptiles son animales asombrosos y su biología es mucho más Fascinante y variada de lo que originalmente se consideraba. Esta afirmación se soporta fácilmente en múltiples aspectos, entre los cuales sobresale, su reproducción (Duellman & Trueb 1994; Wells 2007; Balshine 2012; Gómez-Mestre et al. 2012; Vitt & Caldwell 2014; Pough et a...
Article
Full-text available
Species traits provide a strong link between an organism's fitness and processes at community and ecosystem levels. However, such data remains scarce for amphibians in the neotropics. Colombia is the country with the highest number of threatened amphibians and the second greatest number of amphibian species worldwide. We present a data set containi...
Article
Full-text available
On the basis of morphological and molecular evidence, we describe a new species of lizard of the genus Pholidobolus, previously conflated with P. vertebralis, from a paramo ecosystem in the northern Cordillera Central of Colombia. Our results support the recognition of the new species and suggest it is not closely related to P. vertebralis. Morphol...
Article
The use of GPS telemetry has been a reliable research tool for the study of primate biology in recent years. Although in the past technological restrictions limited its use mainly to large primates, recent improvements in battery size make it possible to use this technology for small species. We used GPS devices for monitoring two adult white-foote...
Article
We describe a new species of Dendrobatidae from the eastern flank of the northern Central Cordillera in Colombia and assign it to the recently named genus Leucostethus. We also assess the phylogenetic status of the Colostethus fraterdanieli “complex” which according to our phylogenetic inference, is closely related to the new species. We use morpho...
Article
We describe a new species of Dendrobatidae from the eastern flank of the northern Central Cordillera in Colombia and assign it to the recently named genus Leucostethus. We also assess the phylogenetic status of the Colostethus fraterdanieli "complex" which according to our phylogenetic inference, is closely related to the new species. We use morpho...
Article
Monitoring and preventing changes in ecosystems is one of the most difficult challenges for biologists. Currently, soundscape analysis (the analysis of acoustic sounds emitted by the ecosystems) have been accepted as a technique that allows assessment of the biodiversity in natural landscapes. To measure the quality of habitats using recordings, ac...
Article
Full-text available
We identified biogeographical districts in the Páramo biogeographic province, in the north-western Andes of Colombia, Ecuador and Venezuela, including the Sierra Nevada de Santa Marta in Colombia, above 3000 m ASL. We applied a parsimony analysis of endemicity (PAE) to 8418 distributional data of 4644 vertebrate and angiosperm species, distributed...
Article
Full-text available
The uplift and final connection of the Central American land bridge is considered the major event that allowed biotic exchange between vertebrate lineages of northern and southern origin in the New World. However, given the complex tectonics that shaped Middle America, there is still substantial controversy over details of this geographical reconne...
Data
Specimens examined. Accession Numbers With Asterisks Are Sequences Obtained Of GeneBank. (DOCX)
Article
Full-text available
We studied the phylogenetic status, morphological variation, dewlap color variation, and geographic distribution of four poorly known Anolis species nested in the Norops clade, particularly in the A. fuscoauratus group from the Andes of Colombia. In addition, we also describe a nomen nudum species based on morphological and molecular evidence. This...
Article
Full-text available
The northern Andes are a geographically, climatically, and ecologically complex area that harbors a high number of species and presents a high level of endemism. However, the landscape of this region has been highly transformed by human activities, including agriculture, cattle grazing, urbanization, and recently, the construction of large infrastr...
Article
Full-text available
The northern part of the Cordillera Central in Colombia has been recognized as a region of particular relevancy in vertebrates biodiversity. We provide a list of non-volant mammal species in Jaguas and San Carlos, two protected areas around hydroelectric projects on the eastern slope of the Cordillera Central in Antioquia. As part of an ongoing mon...
Article
The rainfall regime is one of the main abiotic components that can cause modifications in the breeding activity of animal species. It has a direct effect on the environmental conditions, and acts as a modifier of the landscape and soundscape. Variations in water quality and acidity, flooding, erosion, and sound distortion are usually related with t...
Article
Full-text available
IUCN Red Lists have been a valuable tool to prioritize conservation plans in endemic neo-tropical frogs. However, many areas in this region are poorly known in terms of their diversity and endemism. Based on examined museum specimens of the threatened species Pristimantis penelopus we revised its geographic distribution and determined the habitat s...
Article
Full-text available
Pristimantis, distributed throughout the New World tropics, is the most speciose vertebrate genus. Pristimantis presents an enormous morphological diversity and is currently divided into several demonstrably non-monophyletic phenetic species groups. With the purpose of increasing our understanding of Pristimantis systematics, we present the first p...
Article
Full-text available
The glassfrog genus Cochranella, with nine recognized species, is distributed in the lowlands and mid elevation of the Neotropical forests, from Nicaragua to Bolivia (Guayasamin et al. 2009; Twomey et al. 2014). Four species are trans-Andean—C. granulosa (Taylor 1949) occurs in the lowlands and mountains, at mid elevation, of Central America, C. li...
Conference Paper
This article presents a novel approach to analyze thesoundscape in ecosystems, in order to categorize them in terms of their acoustic properties, focusing on the characterization of four ecosystems through an image classification system which contain information of daily acoustic activity in the frequency range (1kHz-11kHz), for five consecutive mo...
Article
Full-text available
Animal biometrics is an important requirement for monitoring and conservation tasks. The classical animal biometrics risk the animals' integrity, are expensive for numerous animals, and depend on expert criterion. The non-invasive biometrics techniques offer alternatives to manage the aforementioned problems. In this paper we propose an automatic s...
Article
Full-text available
The Pristimantis lacrimosus species group, with 24 species distributed in the Neotropics, is a group of arbo-real frogs commonly inhabiting bromeliads. Previous studies have claimed the group to be monophyletic but few species have been included in phylogenetic analyses. In this paper, we included five additional species from the northern Andes in...
Conference Paper
Full-text available
Non-intrusive biometrics of animals using images allows to analyze phenotypic populations and individuals with patterns like stripes and spots without affecting the studied subjects. However, non-intrusive biometrics demand a well trained subject or the development of computer vision algorithms that ease the identification task. In this work, an an...
Article
Full-text available
AimThe aim of this study was to test the link between climatic niche dynamics and species diversification in Anolis on islands and on the mainland. We tested the hypotheses that lineages in warmer climates and with narrow climate niches diversified more than lineages in cold climates and with broad climate niches. We also tested the hypothesis that...
Article
Aim The aim of this study was to test the link between climatic niche dynamics and species diversification in Anolis on islands and on the mainland. We tested the hypotheses that lineages in warmer climates and with narrow climate niches diversified more than lineages in cold climates and with broad climate niches. We also tested the hypothesis tha...
Chapter
Full-text available
El Libro rojo de reptiles de Colombia (2015) es una iniciativa que se llevó a cabo con el aval del Ministerio de Ambiente y Desarrollo Sostenible. Fue liderado por el Instituto de Investigación de Recursos Biológicos Alexander von Humboldt y la Universidad de Antioquia,con el apoyo técnico de la UICN. Se contó con la participación de más de 50 inve...
Article
Full-text available
p> Aristelliger georgeensis , previously known to occur in the Yucatan peninsula (Mexico), the coasts and islands from Belize and Honduras, and the oceanic islands of Colombia in the Caribbean (San Andres, Providence and Saint Catalina) was registered for the first time in Roncador Cay, a flat and small island of coralline origin, located in the so...
Article
The minimum size of sexual maturity and sexual dimorphism are important life history traits useful to study and understand the population dynamics of any species. In this study, we determined the minimum size at sexual maturity and the existence of sexual dimorphism in a population of the rocket-frog, Colostethus aff. fraterdanieli, by means of mor...