Jhon Jairo López-Rojas

• PhD Biologist
• Universidad Nacional de San Martín

Pristimantis Structural and determinate factors for the composition of assemblages of species are diverse. Two theories attempt to explain the pattern of species composition in assemblies using different approaches—i.e., Niche Theory and Neutral Theory. Anurans have complex responses to habitat structure. Species of Pristimantis are good indicators...

Diversos fatores podem levar à deterioração da qualidade das águas e à destruição de ambientes aquáticos, exercendo influência profunda e negativa sobre a estrutura das co- munidades de peixes. Nesse sentido, foi investigada a existência de alterações nos parâ- metros físicos e químicos da água e na diversidade e na composição da fauna de peixes...

We describe a new species of Pristimantis from lowland Amazonia of the Region Loreto, northern Peru. The new species is mainly characterized by its size (SVL 26.5 mm in male, 33.0 mm in female), shagreen dorsal skin, absence of dorsolateral folds, slightly areolate venter, presence of discoidal fold, presence of tympanic membrane including tympanic...

Identifying conservation priorities in ecological hotspots such as the Amazon Basin requires an understanding of beta diversity and endemism patterns. This study explores amphibian and reptile diversity across 32 Amazonian ecoregions, analysing their relationships with habitat heterogeneity and anthropogenic impacts. Using spatial data for 1839 spe...

Understanding spatial variability in ecological and evolutionary patterns is key to Amazonian biodiversity conservation. This study examined taxonomic, phylogenetic, and functional diversity across amphibians and reptiles, assessing the influence of elevation, interrelationships among metrics, and distribution across five Amazon Basin ecoregions, e...

p> Background. Vanilla is a crop of great economic and sociocultural importance, due to the relevance of compounds such as vanillin, which is used in the production of pharmaceutical, cosmetic and food products. Low inflorescence production is a frequent problem that is related to adverse environmental factors in cultivation systems, affecting the...

We report the capture of several new species of longhorn beetles from Peruvian fauna using synthetic pheromones, syn-2,3-hexanediol, fuscumol, and fuscumol acetate. A total of seven species of longhorn beetles from the subfamily Lamiinae were captured. These longhorn beetles were distributed into the following tribes and species: Acanthocinini (Hyl...

The effort to uncover herpetofauna within the zone of influence of the Sierra del Divisor National Park has been focused on the northern reaches. The Abujao basin represents the Sierra del Divisor region well in an understudied area central to the Peruvian Amazon. We found 108 species of amphibians and squamate reptiles. Seven records extend ranges...

Using Moringa oleifera (Moringa oleifera Lam.) seed as a biocoagulant to enhance surface water's physical and chemical quality was the goal of this study. The methodology applied for the generation of experimental data was through the use of the Jar Test equipment, in a dose of 40 mg/L to 140 mg/L, then a fast mixing of 100 rpm for 1 minute and a s...

El trabajo consistió en determinar la concentración de monóxido de carbono (CO) y su relación con el consumo de leña en 39 viviendas distribuidas en 6 barrios de la zona urbana en la localidad de Calzada. Durante una semana y en tres momentos del día se midió la concentración de CO en cada vivienda con el equipo de medición modelo TROTEC BG20 y se...

This chapter focuses on the analysis of resemblance metaphors and metonymies that operate in the ethnozoological lexicon of the Amazonian language Aguaruna. Our corpus is basically composed of binomials (noun-noun compounds) in which these semantic mechanisms are representative and useful for naming sub-generic species. In our analysis, we have mos...

El conocimiento de la biodiversidad de anfibios y reptiles es fundamental para proponer la conservación de estos taxa. En este trabajo se realizaron registros por encuentros visuales y recopilación bibliográfica para conocer la diversidad de anfibios y reptiles por tipos de hábitats en el interfluvio Putumayo-Napo-Amazonas. Nuestros resultados mues...

Estudiamos la historia natural de Osteocephalus castaneicola en el suroeste de la Amazonia. Usamos observaciones de un experimento no exitoso pero relevante, entre enero de 2009 y enero de 2010 en la Fazenda Experimental Catuaba, así como de registros de diez recipientes para almacenamiento de látex entre enero y marzo del 2011 y 2012 en la Fazenda...

Los cambios climáticos que se han producido en las últimas décadas han influenciado en las tendencias y fluctuaciones poblacionales de muchas especies amazónicas, incluyendo los guacamayos. Entre 2006 y 2015, se cuantificaron guacamayos en la cuenca media del río Samiria en Perú. Los conteos por puntos distribuidos a lo largo de ocho transectos acu...

In this work, the vertical stratification in Pristimantis species was studied in a remanescent forest dominated by bamboo in the southwest region of the Amazon. The field work was carried out between December 2012 and May 2013. The differences in height of the perch were analyzed interspecifically, and intraspecific in relation to the structure of...

We report the first record of the genus Microcaecilia in Peru from lowland, primary rainforest in Loreto, adding to its previously known geographic range from northwestern Colombia; Ecuador through southern Venezuela to the Guianas and São Paulo, Brazil. Two individuals of a species of this genus of small caecilians were found in deep leaf litter a...

We report Pristimantis achuar, Pristimantis delius, and Pristimantis orcus as three new records from Brazil, extending their known geographic distributions from Ecuador, Colombia, and Perú. Additionally we comment on the vocalizations of Pristimantis orcus.

We report herein the second locality of Synapturanus rabus Pyburn, 1977 in Peru, based on specimens collected at Reserva Forestal Santa Cruz, department of Loreto. In addition, a general description of the call is provided.

We describe a new species of Pristimantis from lowland Amazonia of the Region Loreto, northern Peru. The new species is mainly characterized by its size (SVL 26.5 mm in male, 33.0 mm in female), shagreen dorsal skin, absence of dorso-lateral folds, slightly areolate venter, presence of discoidal fold, presence of tympanic membrane including tympani...