Juan C. Sánchez-Nivicela

Juan C. Sánchez-Nivicela
National University of Colombia | UNAL · Departamento de Biología (Bogotá)

Bachelor of Science
Taxonomy, Morphology, Anatomy, Ecology, and Evolution in Andean Amphibians and Reptiles from South America

About

52
Publications
27,984
Reads
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99
Citations
Introduction
Ecology and Evolution, Species Diversity, Evolution, Taxonomy, Behavioral Ecology. Management of scientific collections. Anatomy and histology associated with evolutionary patterns
Additional affiliations
August 2019 - present
Universidad San Francisco de Quito (USFQ)
Position
  • Master's Student
Description
  • Associate researcher of Instituto de Diversidad Biológica Tropical iBIOTROP, Museo de Zoología & Laboratorio de Zoología
February 2019 - present
National University of Colombia
Position
  • Research Associate
Description
  • Associate researcher of Evolución y Ecología de Fauna Neotropical Investigation group
August 2013 - present
Instituto Nacional de Biodiversidad (INABIO), Ecuador
Position
  • Research Associate
Description
  • Taxonomy and field work in ecology
Education
August 2006 - March 2013
Universidad del Azuay (UDA)
Field of study
  • Biology

Publications

Publications (52)
Article
Chlorospingus flavopectus, a widely distributed member of the New World sparrows and finches (Passerellidae), is among the most variable and complex Neotropical bird species. With up to 28 subspecies that inhabit montane forest from Mexico south to Argentina, it presents a recurring leapfrog pattern, with many genetically differentiated lineages, b...
Data
This is the Supplementary Material for Sánchez-Nivicela et al (2021) A taxonomic assessment of Chlorospingus flavopectus phaeocephalus and Chlorospingus semifuscus (Passeriformes: Passerellidae), including the description of a new subspecies. It includes: - Molecular Methods (SM: A1) - Dawn song’s spectrograms per every population (SM: A2) - PCA o...
Article
Chlorospingus flavopectus, a widely distributed member of the New World sparrows and finches (Passerellidae), is among the most variable and complex Neotropical bird species. With up to 28 subspecies that inhabit montane forest from Mexico south to Argentina, it resents a recurring leapfrog pattern, with many genetically differentiated lineages, bu...
Data
This is the Supplementary Material for Sánchez-Nivicela et al (2021) A taxonomic assessment of Chlorospingus flavopectus phaeocephalus and Chlorospingus semifuscus (Passeriformes: Passerellidae), including the description of a new subspecies. It includes: - Molecular Methods (SM: A1) - Dawn song’s spectrograms per every population (SM: A2) - PCA of...
Article
Full-text available
Ecuador is one of the most biodiverse countries in the world, but faces severe pressures and threats to its natural ecosystems. Numerous species have declined and require to be objectively evaluated and quantified, as a step towards the development of conservation strategies. Herein, we present an updated National Red List Assessment for amphibian...
Article
Full-text available
We describe a new glandular terrestrial frog of the Pristimantis (Anura: Craugastoridae) genus. The new species inhabits the high montane forests of the Cañar province in southern Ecuador. It differs from other terrestrial frogs by having a striking dark gray and red dorsal coloration, dorsal skin with a corrugated texture, a small tubercle on the...
Article
Leptodeira is one of the most widespread and taxonomically problematic snake taxa in the Americas. Here we describe a new species of Leptodeira from the Andes of southern Ecuador based on morphological and molecular data. The new species is geographically close and morphologically similar to L. ornata and L. larcorum, from which it can be distingui...
Article
Full-text available
We describe the female of Andinosaura kiziriani from a topotypical locality, in the "El Chorro" sector, southwest of the Azuay province, Ecuador. The female was active on litter and rocks, nearby the El Chorro waterfall. The individual differs from males by presenting 31 transverse rows of dorsal scales, absence of femoral pores, a snout-vent lengt...
Article
Full-text available
Describimos la hembra de Andinosaura kiziarani de una localidad topotípica en la vertiente suroccidental del Macizo del Cajas en el sur de Ecuador. Una reducción en las escamas dorsales transversales, el número de escamas entre los poros femorales menor a seis y un aumento en el número de poros femorales la distinguen de los especímenes machos. En...
Article
Full-text available
Southernmost record of Rhinobothryum bovallii (Andersson 1916), new country records and notes of distribution range of Anolis lyra (Poe, Velasco, Miyata and Williams 2009), Corallus blombergi (Rendahl and Vestergren 1941) and, Spilotes megalolepis (Linnaeus 1758), are provided from specimens collected in Cerro de Hayas forest, Guayas province, sout...
Article
Full-text available
Elachistocleis is a Neotropical genus of microhylid frogs with 18 species, most of which occur east of the Andes in South America. Here, we present a new phylogeny of Gastrophryninae and describe and name a new species of Elachistocleis from southern Ecuador-the first to be found west of the Andes and also the first from Ecuador. Our phylogeny is b...
Article
Full-text available
Within many biological collections around the world, it is known that Dermestes beetles are used in the preparation of osteological material, as part of the collection management protocols. Despite the fact that the use of these beetles is common, management so that the yield of a colony is optimal is not entirely clarified. In this study, we prese...
Book
Full-text available
En 2015 la publicación del libro “Anfibios, Reptiles y Aves de la provincia de El Oro” fue un hito para la provincia, al visualizar el primer producto de la serie de publicaciones del GADPEO-INABIO de flora y fauna de la provincia de El Oro. Esta guía marcó el inicio de la exploración al conocimiento de la gran diversidad y endemismo de la provinci...
Chapter
Full-text available
El Oro es la provincia más meridional del occidente de Ecuador. Limita al Norte con la provincia de Azuay y Guayas, al Noroeste con el Golfo de Guayaquil, al Sureste con la provincia de Loja, y al Sur con Perú. Tiene una superfi cie de 5767,70 km2 y se compone de 14 cantones y 81 cabeceras parroquiales .Una porción del territorio provincial se loca...
Chapter
Full-text available
Se identifican los picos máximos de riqueza de especies de anfibios y reptiles en los bosques piemontanos (entre 400 y 1600 m), disminuyendo a medida que se alejan de esta banda de elevación. Los ecosistemas piemontanos muestran una mayor área de remanencia boscosa en la provincia. Climáticamente concentran mayores niveles de humedad y albergan tem...
Article
Full-text available
In the genus Pristimantis, species are often combined into taxonomic units called species groups. The taxonomy of these groups is frequently inaccurate due to the absence of genetic data from type series and repeated misidentifications generated by high morphological resemblance between taxa. Here, we focus on the P. orestes species group, providin...
Article
Full-text available
We describe a new species of Lynchius from the eastern montane forest of southern Ecuador. We also report the occurrence of L. parkeri in Ecuador, on paramos of Yacuri National Park, near the border with Peru. We used morphological and genetic evidence for the description of the new species and the new report of L. parkeri. Phylogenetic analyses we...
Article
Full-text available
A molecular phylogeny of the Neotropical snail-eating snakes (tribe Dipsadini) is presented including 43 (24 for the first time) of the 77 species, sampled for both nuclear and mitochondrial genes. Morphological and phylogenetic support was found for four new species of Dipsas and one of Sibon , which are described here based on their unique combin...
Article
Full-text available
A new species of Pristimantis is described from the highland paramos on the eastern slopes of the Cajas Massif, southern Andes of Ecuador, at 3400 m. This new species is characterized by having a distinctive reddish color, cutaneous macroglands in suprascapular region and surfaces of arm and legs, and by lacking dentigerous processes of vomers. The...
Article
Full-text available
A new species of Pristimantis is described from the highland paramos on the eastern slopes of the Cajas Massif, southern Andes of Ecuador, at 3400 m. This new species is characterized by having a distinctive reddish color, cutaneous macroglands in suprascapular region and surfaces of arm and legs, and by lacking dentigerous processes of vomers. The...
Conference Paper
Full-text available
El Oro es la provincia más meridional de la República del Ecuador, ubicada al suroccidente del país, limita con el extremo noroeste de Perú. La provincia recibe la influencia biogeográfica de las áreas secas y áridas de la zona costera y las áreas húmedas y lluviosas de las estribaciones occidentales de los Andes. Durante los años 2013 - 2015 y com...
Conference Paper
Full-text available
Pristimantis es el grupo más diverso de vertebrados a nivel mundial, ya que aglutina alrededor del seis por ciento de la diversidad total de anfibios del mundo (587 especies) y el 15% de las especies del Neotrópico. En Ecuador, de 587 especies de anfibios reportadas, más de un cuarto (200 especies) son Pristimantis. Se describen un promedio de 4 es...
Conference Paper
Full-text available
La información de Crocodylus acutus en el Ecuador es escasa y se restringe a pocos estudios formalmente publicados, los vacíos de información a nivel poblacional y distribución geográfica en el país generan la necesidad de actualizar las bases de datos y conocimiento biológico sobre esta especie de crocodílido amenazado. Por esta razón, en este est...
Article
Full-text available
We present new information on the distribution of the marsupial frog Gastrotheca testudinea (Jiménez de la Espada, 1870) in Ecuador. We provide the first record from the province of Cañar, and the southernmost locality for Ecuador (which also corresponds to the third known report from the province of Zamora-Chinchipe). In addition, we review the el...
Article
Full-text available
We present new information on the distribution of the marsupial frog Gastrotheca testudinea (Jiménez de la Espada, 1870) in Ecuador. We provide the first record from the province of Cañar, and the southernmost locality for Ecuador (which also corresponds to the third known report from the province of Zamora-Chinchipe). In addition, we review the el...
Article
Full-text available
We present new records for Fleischmann’s Glassfrog, Hyalinobatrachium fleischmanni (Boettger, 1893), which extend the distribution of this species into central and southwestern Ecuador and thus represent the southernmost known localities. These new reports are based on specimens collected at Cerro de Hayas, province of Guayas, and Macul, province o...
Article
Full-text available
We describe a new species of Pristimantis from the Tinajillas-Rio Gualaceño Ecological Conservation Area, Morona Santiago province, an area of montane forest in the southeastern Andes of Ecuador. Pristimantis nimbus sp. nov. is similar to P. altamazonicus, P. ardyae, P. bambu, P. bellator, P. caeruleonotus, P. cethospilus, P. churuwiai, P. croceoin...
Preprint
Full-text available
We present new information on the distribution of the marsupial frog Gastrotheca testudinea (Jiménez de la Espada, 1870) in Ecuador. We provide the first record from the province of Cañar, and the country’s southernmost locality (which also corresponds to the third known report from the province of Zamora-Chinchipe). In addition, we discuss the val...
Preprint
Full-text available
We present new information on the distribution of the marsupial frog Gastrotheca testudinea (Jiménez de la Espada, 1870) in Ecuador. We provide the first record from the province of Cañar, and the country’s southernmost locality (which also corresponds to the third known report from the province of Zamora-Chinchipe). In addition, we discuss the val...
Article
Full-text available
Registramos a la Serpiente Coral de Steindachner Micrurus steindachneri en el Área Ecológica de Conservación Municipal Tinajillas-Río Gualaceño, provincia de Morona Santiago, Ecuador. La especie ha sido previamente registrada en solo dos áreas protegidas nacionales en Ecuador. Este reporte es el primero en una zona protegida local y resalta la impo...
Article
Full-text available
We describe three new species of terrestrial frogs of the genus Pristimantis from the province of El Oro, southwestern Ecuador. Two species inhabit the lowland semi-deciduous forests, and the third species in the high montane forests. Pristimantis kuri sp. nov. is characterized by having white patches bordered by dark brown on ventral, inguinal and...
Article
Full-text available
div class="page" title="Page 1"> Registramos a la Serpiente Coral de Steindachner Micrurus steindachneri en el Área Ecológica de Conservación Municipal Tinajillas-Río Gualaceño, provincia de Morona Santiago, Ecuador. La especie ha sido previamente registrada en solo dos áreas protegidas nacionales en Ecuador. Este reporte es el primero en una zona...
Article
Full-text available
p>We describe three new species of terrestrial frogs of the genus Pristimantis from the province of El Oro, southwestern Ecuador. Two species inhabit the lowland semi-deciduous forests, and the third species in the high montane forests. Pristimantis kuri sp. nov. is characterized by having white patches bordered by dark brown on ventral, inguinal a...
Book
Full-text available
En esta obra encontrará información actualizada sobre la diversidad de tres grupos de vertebrados (aves, anfibios y reptiles) y los ecosistemas de la Provincia de El Oro. Se incluye una abundante galería de fotos que para el lector será de gran ayuda el reconocimiento de las especies y de los ambientes que presenta la provincia, así como figuras qu...
Book
En esta obra encontrará información actualizada sobre la diversidad de tres grupos de vertebrados (aves, anfibios y reptiles) y los ecosistemas de la Provincia de El Oro. Se incluye una abundante galería de fotos que para el lector será de gran ayuda el reconocimiento de las especies y de los ambientes que presenta la provincia, así como figuras qu...
Article
Full-text available
We describe two new species of Pristimantis from the cloud forest and paramo highlands protected by the Reserva Municipal Tinajillas-Gualaceño, province of Morona-Santiago, southeast versant of the Andes of Ecuador. The first species inhabits cloud forests at 2250 m and its diagnosed by the presence of spatulated digital discs and dark brown colora...

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Projects

Projects (5)
Project
Generar y analizar información relacionada con la herpetofauna, dentro de los límites planteados para el CCSP, incluyendo parques nacionales, y áreas protegidas públicas y privadas. Promover la conservación de la diversidad de anfibios y reptiles en el CCSP en un trabajo conjunto con actores locales.
Project
Systematics and taxonomy of amphibians and reptiles of the high-Andean ecosystems in southern Ecuador. Ecomorphology and evolution in related to ecosystem characteristics.
Project
Actualización de la Lista Roja de Anfibios del Ecuador, en el marco del proyecto Conservación de los Anfibios del Ecuador y acceso a recursos genéticos (PARG)