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Journal articles on the topic 'Andean water frog'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Muñoz-Saravia, Arturo, Adriana Aguila-Sainz, Ricardo Zurita-Ugarte, Gabriel Callapa-Escalera, and Geert P.J. Janssens. "Cannibalism in the High Andean Titicaca Water Frog, Telmatobius culeus Garman, 1875." Amphibian & Reptile Conservation 14, no. 3 (2020): 156–61. https://doi.org/10.5281/zenodo.13258773.

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Muñoz-Saravia, Arturo, Aguila-Sainz, Adriana, Zurita-Ugarte, Ricardo, Callapa-Escalera, Gabriel, Janssens, Geert P.J. (2020): Cannibalism in the High Andean Titicaca Water Frog, Telmatobius culeus Garman, 1875. Amphibian & Reptile Conservation (e262) 14 (3): 156-161, DOI: 10.5281/zenodo.13258773

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Fibla, Pablo, Paola A. Sáez, Franco Cruz-Jofré, and Marco A. Méndez. "Drainage Network Morphology Influences Population Structure and Gene Flow of the Andean Water Frog (Anura: Telmatobiidae) of the Atacama Desert, Northern Chile." Zoological Studies 62, no. 44 (2023): 1–12. https://doi.org/10.6620/ZS.2023.62-44.

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Fibla, Pablo, Sáez, Paola A., Cruz-Jofré, Franco, Méndez, Marco A. (2023): Drainage Network Morphology Influences Population Structure and Gene Flow of the Andean Water Frog (Anura: Telmatobiidae) of the Atacama Desert, Northern Chile. Zoological Studies 62 (44): 1-12, DOI: 10.6620/ZS.2023.62-44, URL: http://dx.doi.org/10.6620/ZS.2023.62-44

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3

Astudillo, Pedro X., Ramiro Jiménez, David C. Siddons, and Bruno Timbe. "New occurrences and habitat description of southern Ecuador endemic frog Atelopus exiguus (Anura: Bufonidae) from a conservation hotspot in the high Andes." Revista Peruana de Biología 29, no. 3 (2022): e22742. http://dx.doi.org/10.15381/rpb.v29i3.22742.

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Atelopus species are classified as a priority taxon for monitoring and conservation, of these A. exiguus is endemic to southern Ecuador and is classified as critically endangered, however, within its known geographic range, little attention has been given to identifying new localities particularly across the páramo ecosystem (> 3500 m a.s.l.). Therefore, in the páramo landscape of Macizo del Cajas Biosphere Reserve, a conservation hotspot, we intensively searched for A. exiguus across 15 localities (elevation range: 3550 – 3800 m a.s.l.). In one year of monitoring (2020 – 2021), we recorded

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Gastón, María Soledad, and Mauricio Sebastián Akmentins. "Clues on the warming vulnerability of a water frog Telmatobius rubigo (Anura: Telmatobiidae) from the arid Central Andes of Argentina." Herpetological Journal 35, no. 2 (2025): 136–45. https://doi.org/10.33256/35.2.136145.

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Warming climate is one of the main threats affecting the fitness and survival of amphibians, the most threatened vertebrate class. Proxies such as the critical thermal maximum (CTmax) and the thermal safety margin, which can change during the ontogeny, have been developed to know the vulnerability to warming. Telmatobius rubigo is a fully aquatic frog of high-altitude lotic freshwater ecosystems and is an endemic species from the Central Andean Puna ecoregion of north-western Argentina. The species lives and reproduces in shallow permanent streams, which could represent a challenge in a warmin

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Higuera -Rojas, Diego F., and Juan E. Carvajal-Cogollo. "Diet of Dendropsophus molitor (Anura: Hylidae) in a High-Andean agricultural ecosystem, Colombia." Universitas Scientiarum 26, no. 1 (2021): 119–37. http://dx.doi.org/10.11144/javeriana.sc26-1.dodm.

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Dendropsophus molitor is a generalist frog that makes optimal use of resources offered by highly transformed Andean ecosystems. Despite being one of the most researched amphibian species in Colombia, aspects of its diet as an indication of its trophic niche have not yet been evaluated. For this reason, we evaluated the diet of D. molitor, with interpretations of dietary composition to address this dimension of the niche. We chose an Andean agricultural system and in it we selected four jagüeyes (water-filled ditches) and carried out samplings between July and November 2017. We collected 32 ind

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CUEVAS, C. C., J. R. FORMAS, M. ALVARADO-RYBAK, A. PEÑAFIEL-RICAURTE, and C. AZAT. "Rediscovery of the enigmatic Andean frog Telmatobius halli Noble (Anura: Telmatobiidae), re-description of the tadpole and comments on new adult’s characters, type locality and conservation status." Zootaxa 4834, no. 2 (2020): 195–206. http://dx.doi.org/10.11646/zootaxa.4834.2.2.

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We report the rediscovery of Telmatobius halli (Hall’s water frog), which had not been found since its description (over 80 years) since its type locality was not clearly established. “Aguas Calientes” near Ollagüe is hypothesized as the original type locality where Frank Gregory Hall collected the type material in 1935. The tadpole is re-described, and new data on the external and internal morphology of adults is provided. These new morphological data are compared with Telmatobius spp. inhabiting geographically close to T. halli in Chile and Bolivia. In addition, comments on its ecology, cons

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Correa, Claudio. "A solution to the enigma of the type locality of Telmatobius halli Noble, 1938 (Anura, Telmatobiidae), a frog lost for 86 years." ZooKeys 1060 (September 24, 2021): 183–92. https://doi.org/10.3897/zookeys.1060.67904.

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For 80 years, there were no sightings of the Andean frog, Telmatobius halli, due to the ambiguity with which its type locality was described ("warm spring near Ollagüe", northern Chile). The type specimens were collected during the International High Altitude Expedition to Chile (IHAEC) in 1935 and were subsequently described in 1938. In 2018 and 2020, two studies independently reported the rediscovery of the species, but they reached different conclusions about its identity and geographic distribution. In fact, the populations identified as T. halli in those studies are more phylogenetically

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8

Catenazzi, Alessandro, Victor Vargas, and Edgar Lehr. "A new species of Telmatobius (Amphibia, Anura, Telmatobiidae) from the Pacific slopes of the Andes, Peru." ZooKeys 480 (February 2, 2015): 81–95. https://doi.org/10.3897/zookeys.480.8578.

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We describe a new species of Telmatobius from the Pacific slopes of the Andes in central Peru. Specimens were collected at 3900 m elevation near Huaytará, Huancavelica, in the upper drainage of the Pisco river. The new species has a snout–vent length of 52.5 ± 1.1 mm (49.3–55.7 mm, n = 6) in adult females, and 48.5 mm in the single adult male. The new species has bright yellow and orange coloration ventrally and is readily distinguished from all other central Peruvian Andean species of Telmatobius but T. intermedius by having vomerine teeth but lacking premaxillary and maxillary teeth, and by

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Medina-Jaramillo, Carolina, Carmen Quintero-Pimiento, Catalina Gómez-Hoyos, Robin Zuluaga-Gallego, and Alex López-Córdoba. "Alginate-Edible Coatings for Application on Wild Andean Blueberries (Vaccinium meridionale Swartz): Effect of the Addition of Nanofibrils Isolated from Cocoa By-Products." Polymers 12, no. 4 (2020): 824. http://dx.doi.org/10.3390/polym12040824.

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Edible coatings and films are appealing strategies for the postharvest management of blueberries. In the current work, alginate and alginate/cellulose nanofibril (CNF) edible coatings crosslinked with calcium chloride were developed for application on Andean blueberry (a promissory wild blueberry). Cocoa by-products were valorized through the isolation of their CNFs, and these were incorporated in the edible coatings. Edible coating formulations were based on blends of alginate (2% w/v), CNFs (0%, 0.1%, or 0.3%), glycerol, and water. In addition, stand-alone films were prepared, and their ligh

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Acurio, Liliana, Diego Salazar, Bagner Castillo, Cristian Santiana, Javier Martínez-Monzó, and Marta Igual. "Characterization of Second-Generation Snacks Manufactured from Andean Tubers and Tuberous Root Flours." Foods 13, no. 1 (2023): 51. http://dx.doi.org/10.3390/foods13010051.

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Andean roots, such as zanahoria blanca, achira, papa China, camote, oca, and mashua, contain high amounts of dietary fiber, vitamins, minerals, and fructo-oligosaccharides. This study aimed to demonstrate the possibility of obtaining healthy second-generation (2G) snacks (products obtained from the immediate expansion of the mixture at the exit of the extruder die) using these roots as raw materials. Corn grits were mixed with Andean root flour in a proportion of 80:20, and a Brabender laboratory extruder was used to obtain the 2G snacks. The addition of root flour increased the water content,

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Hora Revilla, Manuel Emilio, Alberto Ronal Gabriel Aguilar, José Luis Polo Corro, José Manuel Marchena Dioses, Eugenia López-López, and Jacinto Elías Sedeño-Díaz. "Calibration and Validation of the BMWP Index for the Assessment of Fluvial Systems in High Andean Mining Areas of Peru." Water 17, no. 12 (2025): 1724. https://doi.org/10.3390/w17121724.

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The High Andean region of Peru, characterized by a complex orography, has unique and highly biodiverse ecosystems. This region has several headwater basins that play a critical role in the hydrological cycle, providing diverse ecosystem services essential to sustain biodiversity and supply water to human communities. Despite the importance of this region, it faces significant human intervention, particularly mining activities, which affect basin headwaters and jeopardize water security. This study aimed to calibrate the Biological Monitoring Working Party (BMWP) index to evaluate water quality

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12

Sault, Nicole. "Condors, Water, and Mining: Heeding Voices from Andean Communities." Ethnobiology Letters 9, no. 1 (2018): 27–43. http://dx.doi.org/10.14237/ebl.9.1.2018.1079.

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This paper addresses the relationship between scholarship and activism, considering the obligations that ethnobiologists have to the communities we work with. I begin by describing the cultural meaning of Andean condors (Vultur gryphus) in Peru through their connections to mountains and water in various forms, and the condor’s role as guardian and protector. My research on condors led me to Indigenous beliefs and practices regarding sacred mountains and water, and from this to the threats against the environment posed by international mining operations. This discussion highlights questions con

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Medina-Jaramillo, Carolina, Santiago Estevez-Areco, Silvia Goyanes, and Alex López-Córdoba. "Characterization of Starches Isolated from Colombian Native Potatoes and Their Application as Novel Edible Coatings for Wild Andean Blueberries (Vaccinium meridionale Swartz)." Polymers 11, no. 12 (2019): 1937. http://dx.doi.org/10.3390/polym11121937.

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Andean blueberry is a promissory fruit native to South America. The current work aimed to characterize starches isolated from Colombian native potatoes and to evaluate the effect of the application of starch edible coatings on the changes in the physicochemical quality parameters of the Andean blueberry during storage. Starches were isolated from three different potatoes varieties (pacha negra, mora, and alcarrosa) and characterized. Then, starch-based coatings were applied to Andean blueberries, and the changes in their quality parameters were monitored during 12 days of storage. Despite the

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Vega, Lina Patricia, Tenza Camilo Andres Pulido, Rodriguez Sarai Sanchez, Geraldine Paola Garcia, and Hurtado Kellys Nallith Salcedo. "Water quality assessment using biological indicators in Cane River - Colombia." Revista Facultad de Ingeniería, Universidad de Antioquia, no. 115 (May 15, 2024): 114–26. https://doi.org/10.17533/udea.redin.20240516.

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This study shows the results of a water quality assessment for the Basin of the Cane River, which belongs to Iguaque Flora and Fauna Sanctuary National Natural Park, a naturally protected area formed by the Andean Forest and paramo ecosystems in Colombia. The water quality of this river is impacted by agricultural runoff and domestic wastewater from human activities in the buffer area. This was assessed by using chemical, physical, and biological indexes. The IDEAM, NSF and water quality indexes were based on the European standards of measurement. Further to this, BMPW/Col and ETP biological i

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15

Acurio, Liliana, Diego Salazar, Purificación García-Segovia, Javier Martínez-Monzó, and Marta Igual. "Third-Generation Snacks Manufactured from Andean Tubers and Tuberous Root Flours: Microwave Expansion Kinetics and Characterization." Foods 12, no. 11 (2023): 2168. http://dx.doi.org/10.3390/foods12112168.

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Andean tubers and tuberous roots have nutritional and medicinal properties transferred through ancestral generations. In this study, we aim to promote cultivation and consumption by developing a snack based on these crops. Corn grits were thoroughly mixed with sweet potato, mashua, and three varieties of oca flour (white, yellow, and red) in an 80:20 ratio, and a single-screw laboratory extruder was utilized to produce third-generation (3G) dried pellets. Microwave expansion was studied, and the dried 3G pellets and expanded snacks were characterized. The microwave expansion curves of the drie

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16

Gilmar, SANTISTEBAN, Victor BÉJAR Juan, and TILLMANN Timmi. "ITLA and Reenchanting Terraces in Peru." International Terraced Landscapes Alliance Journal 1, no. 2 (2020): 16–35. https://doi.org/10.5281/zenodo.7341163.

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In Peru there are currently about one million hectares of terraces of different characteristics that integrate Andean Amazonian territories (Agrorural 2021; Massón 1993). Of these, approximately 40% are in production thanks to the management of the peasant communities integrating life, water and territory.  Peru is a very diverse tropical mountain country, ranging from one of the driest deserts in the world to the highest rainfall tropical forests. It is cultivated from sea level to over 4000 m above sea level and the terraces integrate the territory harmoniously, interrelating wat

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Rivera, Diego, Karen Gutierrez, Walter Valdivia-Cea, et al. "Validation of Cryogenic Vacuum Extraction of Pore Water from Volcanic Soils for Isotopic Analysis." Water 11, no. 11 (2019): 2214. http://dx.doi.org/10.3390/w11112214.

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Andean headwater catchments are key components of the hydrological cycle, given that they capture moisture, store water and release it for Chilean cities, industry, agriculture, and cities in Chile. However, knowledge about within-Andean catchment processes is far from clear. Most soils in the Andes derive from volcanic ash Andosols and Arenosols presenting high organic matter, high-water retention capacity and fine pores; and are very dry during summer. Despite their importance, there is little research on the hillslope hydrology of Andosols. Environmental isotopes such as Deuterium and 18-O

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18

Choque-Quispe, David, Sandro Froehner, Carlos A. Ligarda-Samanez, et al. "Insights from Water Quality of High Andean Springs for Human Consumption in Peru." Water 13, no. 19 (2021): 2650. http://dx.doi.org/10.3390/w13192650.

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The headwaters of the high Andean basin in Peru accumulate water from the mist, rain, snow, and hail, and it is transported superficially and underground to low-lying areas, mostly used for drinkable purposes. The natural water in these areas might be altered due to legal and illegal mining extraction. The aim of the study was to evaluate the water quality for human consumption. Seventeen water samples were examined from Andahuaylas (A), San Jerónimo (S), Talavera (T), and Chiara (CH) districts located between 2813 and 4004 m altitude in the Andes. We used physicochemical, microbiological, and

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19

Torres, Camilo, Margaret Gitau, Jaime Lara-Borrero, and Diego Paredes-Cuervo. "Framework for Water Management in the Food-Energy-Water (FEW) Nexus in Mixed Land-Use Watersheds in Colombia." Sustainability 12, no. 24 (2020): 10332. http://dx.doi.org/10.3390/su122410332.

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The food-energy-water (FEW) nexus approach has emerged as an alternative for managing these resources more efficiently. Work from studies conducted in the FEW nexus in Latin America is scarce in the scholarly literature. This study aims to develop a framework for water management at the FEW Nexus, with a focus on Colombia. The study focuses on a typical mixed land-use watershed in the Andean region with specific objectives being to: (1) characterize the watershed with respect to land use, climate, water resources, and other factors pertinent to the nexus; (2) explore the relationship between f

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Trawick, Paul. "Comedy and Tragedy in the Andean Commons." Journal of Political Ecology 9, no. 1 (2002): 35. http://dx.doi.org/10.2458/v9i1.21634.

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In the Andes of Peru a familiar story has unfolded in many communities around the sharing and use of water, a tragedy often attributed to an irresolvable conflict between the inherently selfish interests of the individual and the cooperative needs of the group. This article traces the history of irrigation in one highland valley based on comparative ethnographic research, examining the reasons for both success and failure in governing the commons and trying to explain why the former has given way to the latter in many, but by no means all, places. It reveals that success can be relatively unpr

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Ruíz Ordoñez, Diana Marcela, Yineth Viviana Camacho De Angulo, Edgar Leonairo Pencué Fierro, and Apolinar Figueroa Casas. "Mapping Ecosystem Services in an Andean Water Supply Basin." Sustainability 15, no. 3 (2023): 1793. http://dx.doi.org/10.3390/su15031793.

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Socio-ecological dynamics affect the ecosystem services supply and are relevant to generate effective water management strategies; this condition is considered to evaluate under a holistic approach, the water ecosystem services (WES) in an Andean supply basin (ASB) in Colombia. This analysis focus on the connection of biophysical and sociocultural components for the multi-purpose use of water based on The Soil and Water Assessment Tool (SWAT) modelling for Las Piedras River Basin (LPRB). The generated Hydrological Response Units (HRUs), allows to estimate the capacity of the basin for supplyin

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Torres-Batlló, Juan, and Belén Martí-Cardona. "Precipitation trends over the southern Andean Altiplano from 1981 to 2018." Journal of Hydrology 590 (November 2020): 125485. http://dx.doi.org/10.1016/j.jhydrol.2020.125485.

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Cordero, Raúl R., Edgardo Sepúlveda, Sarah Feron, et al. "Black carbon in the Southern Andean snowpack." Environmental Research Letters 17, no. 4 (2022): 044042. http://dx.doi.org/10.1088/1748-9326/ac5df0.

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Abstract The Andean snowpack is an important source of water for many communities. As other snow-covered regions around the world, the Andes are sensitive to black carbon (BC) deposition from fossil fuel and biomass combustion. BC darkens the snow surface, reduces the albedo, and accelerates melting. Here, we report on measurements of the BC content conducted by using the meltwater filtration (MF) technique in snow samples collected across a transect of more than 2500 km from the mid-latitude Andes to the southern tip of South America. Addressing some of the key knowledge gaps regarding the ef

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Ayala Izurieta, Johanna Elizabeth, Andrés Agustín Beltrán Dávalos, Carlos Arturo Jara Santillán, et al. "Spatial and Temporal Analysis of Water Quality in High Andean Lakes with Sentinel-2 Satellite Automatic Water Products." Sensors 23, no. 21 (2023): 8774. http://dx.doi.org/10.3390/s23218774.

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The water of high Andean lakes is strongly affected by anthropic activities. However, due to its complexity this ecosystem is poorly researched. This study analyzes water quality using Sentinel-2 (S2) images in high Andean lakes with apparent different eutrophication states. Spatial and temporal patterns are assessed for biophysical water variables from automatic products as obtained from versions of C2RCC (Case 2 Regional Coast Color) processor (i.e., C2RCC, C2X, and C2X-COMPLEX) to observe water characteristics and eutrophication states in detail. These results were validated using in situ w

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Diéguez, M. C., C. P. Queimaliños, S. Ribeiro Guevara, et al. "Uptake of Hg2+by picocyanobacteria in natural water from four Andean lakes." E3S Web of Conferences 1 (2013): 41017. http://dx.doi.org/10.1051/e3sconf/20130141017.

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26

Ten Pas, Derek, Carly Bogdajewicz, Julie Wildschut, Chad Tatko, and Robert Hoeksema. "An innovative subterranean spring capture method for improved water quality." H2Open Journal 4, no. 1 (2021): 381–92. http://dx.doi.org/10.2166/h2oj.2021.141.

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Abstract Many rural communities in Andean countries of South America rely on springs as their primary drinking water source. A variety of spring capture methods are employed resulting in varying water quality. Water from these spring-fed sources, delivered to the community via a distribution network, is often not chlorinated, increasing the risk of water-borne pathogens. A simple, improved technique has been developed in Ecuador's Chimborazo Province by a local Christian organization, Corporación de Desarrollo Integral Socio Económico (CODEINSE), to protect spring water sources for community w

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Clark, K. E., M. A. Torres, A. J. West, et al. "The hydrological regime of a forested tropical Andean valley." Hydrology and Earth System Sciences Discussions 11, no. 7 (2014): 8603–50. http://dx.doi.org/10.5194/hessd-11-8603-2014.

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Abstract. The hydrology of tropical mountain catchments plays a central role in ecological function, geochemical and biogeochemical cycles, erosion and sediment production, and water supply in globally important environments. There have been few studies quantifying the seasonal and annual water budgets in the montane tropics, particularly in cloud forests. We investigated the water balance and hydrologic regime of the Kosñipata Valley (basin area 164.4 km2) over the period 2010–2011. The valley spans over 2500 m in elevation in the eastern Peruvian Andes and is dominated by tropical montane cl

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Sedlar, Aleš, Mateja Zupin, Marko Maras, et al. "QTL Mapping for Drought-Responsive Agronomic Traits Associated with Physiology, Phenology, and Yield in an Andean Intra-Gene Pool Common Bean Population." Agronomy 10, no. 2 (2020): 225. http://dx.doi.org/10.3390/agronomy10020225.

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Understanding the genetic background of drought tolerance in common bean (Phaseolus vulgaris L.) can aid its resilience improvement. However, drought response studies in large seeded genotypes of Andean origin are insufficient. Here, a novel Andean intra-gene pool genetic linkage map was created for quantitative trait locus (QTL) mapping of drought-responsive traits in a recombinant inbred line population from a cross of two cultivars differing in their response to drought. Single environment and QTL × environment analysis revealed 49 QTLs for physiology, phenology, and yield-associated traits

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Luzuriaga-Neira, Nivia, Keenan Ennis, Michaël A. J. Moens, et al. "The Andean Ibis (Theristicus branickii) in South America: potential distribution, presence in protected areas and anthropic threats." PeerJ 11 (December 11, 2023): e16533. http://dx.doi.org/10.7717/peerj.16533.

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The avifauna of South America is one of the most widely studied groups of vertebrates. However, certain species, such as the Andean Ibis (Theristicus branickii), have received limited attention regarding their ecological patterns, biology, current distribution, and environmental requirements. This study analyzed observation data from the Global Biodiversity Information Facility (GBIF) on the Andean Ibis in four countries to identify and understand critical variables that determine the species’ presence, assess the proportion of its habitat within protected areas and identify possible threats t

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Coayla-Peñaloza, Pastor, André Alexander Chenaux-Díaz, Claudia Viviana Moreno-Salazar, Cynthia Elizabeth Cruz-Remache, Eusebio Walter Colque-Rondón, and Cristina Damborenea. "Benthic macroinvertebrate communities and water quality assessment in high Andean Wetlands Callali-Oscollo, Arequipa-Cusco, Peru." Revista Mexicana de Biodiversidad 94 (February 17, 2023): e944206. http://dx.doi.org/10.22201/ib.20078706e.2023.94.4206.

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High Andean wetlands are fragile systems, vulnerable to human activity and climate change. In the Arequipa region (Peru), there are high Andean lotic and lentic systems currently affected by livestock raising, fish farming, and dams. The aim of the study was to evaluate the aquatic invertebrate community in the Callalli-Oscollo wetlands and the possible impact of human activities. Samples were taken from November 2017 to October 2018 at 4 sampling stations in lotic environments and 2 in lentic environments. Macroinvertebrates were identified to the family level. The following were determined t

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del Aguila, Sandra, and Francisco Espinoza-Montes. "Impacto del cambio climático en las descargas futuras de una cuenca altoandina de Perú al 2100." Tecnología y ciencias del agua 15, no. 1 (2024): 111–55. http://dx.doi.org/10.24850/j-tyca-15-01-03.

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El objetivo de esta investigación fue analizar el impacto del cambio climático en el comportamiento de las descargas mensuales en la cuenca Anya, afluente del Mantaro, Junín, al 2100, con el modelo SWAT (Soil and Water Assessment Tool). Se obtuvieron datos grillados diarios de precipitación y temperaturas de PISCO (Peruvian Interpolated data of the SENAMHI’s Climatological and Hydrological Observations) entre 1981 y 2015, y caudales promedio mensuales medidos en la estación hidrométrica Anya. Para el análisis del efecto espacio temporal del cambio climático en la temperatura y precipitación, y

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Clark, K. E., M. A. Torres, A. J. West, et al. "The hydrological regime of a forested tropical Andean catchment." Hydrology and Earth System Sciences 18, no. 12 (2014): 5377–97. http://dx.doi.org/10.5194/hess-18-5377-2014.

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Abstract. The hydrology of tropical mountain catchments plays a central role in ecological function, geochemical and biogeochemical cycles, erosion and sediment production, and water supply in globally important environments. There have been few studies quantifying the seasonal and annual water budgets in the montane tropics, particularly in cloud forests. We investigated the water balance and hydrologic regime of the Kosñipata catchment (basin area: 164.4 km2) over the period 2010–2011. The catchment spans over 2500 m in elevation in the eastern Peruvian Andes and is dominated by tropical mon

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Al-Yaari, Amen, Thomas Condom, Fabien Anthelme, et al. "Warming-induced cryosphere changes predict drier Andean eco-regions." Environmental Research Letters 19, no. 10 (2024): 104030. http://dx.doi.org/10.1088/1748-9326/ad6ea6.

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Abstract Climate change impacts on humans and ecosystems depend on the intensity, timing, and spatial variability of these changes. While considerable attention has been paid to current and future changes in temperature patterns, comparatively less attention has been devoted to water availability for humans and ecosystems. The aridity index (AI), the ratio of precipitation to potential evapotranspiration, is a common metric used to assess water availability within ecosystems. However, the role of snow in AI calculations within snowy eco-regions is often neglected, resulting in an incomplete un

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Medina-Pizzali, Maria Luisa, Apoorva Venkatesh, Maribel Riveros, et al. "Whole-Genome Characterisation of ESBL-Producing E. coli Isolated from Drinking Water and Dog Faeces from Rural Andean Households in Peru." Antibiotics 11, no. 5 (2022): 692. http://dx.doi.org/10.3390/antibiotics11050692.

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E. coli that produce extended-spectrum β-lactamases (ESBLs) are major multidrug-resistant bacteria. In Peru, only a few reports have characterised the whole genome of ESBL enterobacteria. We aimed to confirm the identity and antimicrobial resistance (AMR) profile of two ESBL isolates from dog faeces and drinking water of rural Andean households and determine serotype, phylogroup, sequence type (ST)/clonal complex (CC), pathogenicity, virulence genes, ESBL genes, and their plasmids. To confirm the identity and AMR profiles, we used the VITEK®2 system. Whole-genome sequencing (WGS) and bioinform

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Vivas-Álzate, Laura C., Héctor José Ciro-Velásquez, José Uriel Sepúlveda-Valencia, and Ezequiel José Pérez Monterroza. "Evaluating the Andean blueberry (Vaccinium meridionale Swartz) powder in the preparation of ice cream: Improving the antioxidant capacity and the total phenolic content." Revista Facultad Nacional de Agronomía Medellín 78, no. 1 (2025): 11015–23. https://doi.org/10.15446/rfnam.v78n1.109366.

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This study evaluated the content of total phenolic compounds, antioxidant capacity, and functional properties of an ice cream formulated from Andean blueberry (Vaccinium meridionale Swartz) powder. The antioxidant capacity of pulp and powder from Andean blueberry was performed by using ABTS*+ and DPPH methods. The blueberry powder was obtained by convection drying, and the rheological and thermal properties of the ice cream were determined by rotational rheology and differential scanning calorimetry (DSC), respectively. The stability of ice cream was evaluated at -15 °C during storage for 30 d

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Lufrano, Daniela, Juliana Cotabarren, Javier Garcia-Pardo, et al. "Biochemical characterization of a novel carboxypeptidase inhibitor from a variety of Andean potatoes." Phytochemistry 120 (December 31, 2015): 36–45. https://doi.org/10.1016/j.phytochem.2015.09.010.

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Lufrano, Daniela, Cotabarren, Juliana, Garcia-Pardo, Javier, Fernandez-Alvarez, Roberto, Tort, Olivia, Tanco, Sebastián, Avilés, Francesc Xavier, Lorenzo, Julia, Obregón, Walter D. (2015): Biochemical characterization of a novel carboxypeptidase inhibitor from a variety of Andean potatoes. Phytochemistry 120: 36-45, DOI: 10.1016/j.phytochem.2015.09.010, URL: http://dx.doi.org/10.1016/j.phytochem.2015.09.010

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Comeca-Chuquipul, Miguel Angel, Fray Masias Cruz-Reyes, Angel Aronés-Cisneros, and David Mansueto Durand-Castro. "Glacier Cover Estimation: a Multitemporal Retrospective Analysis of the Uruashraju Snow-capped Mountain (Ancash)." Revista de Gestão Social e Ambiental 18, no. 10 (2024): e09177. http://dx.doi.org/10.24857/rgsa.v18n10-304.

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Objectives: To estimate the evolution of the glacier cover of the Uruashraju snow-capped mountain (Áncash, Peru) between the years 2014 and 2024, Theoretical framework: The research is framed in the context of climate change, specifically in the reduction of tropical glaciers. Andean glaciers are key indicators of global warming, and their retreat affects the availability of water resources, impacting sectors such as agriculture, human consumption and local biodiversity. Method: A cartographic analysis of satellite images obtained through the "Landsat 8-9 OLI/TIRS C2 L2" mission for the years

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Vladimir, Henao Céspedes, Yaneth Florez Gloria, and Alberto Garcés-Gómez Yeison. "The internet of things in high andean wetland monitoring, historical review approach." Bulletin of Electrical Engineering and Informatics 10, no. 3 (2021): pp. 1572~1579. https://doi.org/10.11591/eei.v10i3.2653.

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The internet of things (IoT) has allowed important technological advances for monitoring and telemetry, thanks to the fact that IoT-based systems allow to obtain information in large areas, far from urban environments, and where low energy monitoring systems are required, features that are consistent with the requirements for high Andean wetlands telemetry. The monitoring of environmental variables, such as water quality in high Andean wetlands, is a topic of great importance for the scientific community, since, if the knowledge of the dynamics of the wetlands is improved, it is possible to op

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Chanamé-Zapata, Fernán, María Custodio, Christian Poma-Chávez, and Alex Huamán-De La Cruz. "Nutrient concentrations and trophic state of three Andean lakes from Junín, Perú." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 4 (2020): 1. http://dx.doi.org/10.4136/ambi-agua.2525.

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The study assessed the trophic state of three lakes used as fish farms in the region of Junín-Peru, under different hydrological conditions. Surface water samples were collected from three points at each lake in 2018 during the rainy (March-April) and dry (June-July) seasons. Total phosphorus, turbidity, and chlorophyll-a (Chl-a) were measured. Trophic indexes (TSI Chl-a, and TSI TP) were also computed. The water trophic state categorization was performed by adapting and calculating the Trophic State Index (TSI). The TSI (TP) classified the three lakes in both seasons (rainy and dry) as mesotr

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Ccasani Sierra, Manuel, Carlos Enrique Orihuela Romero, JORGE RICARDO GONZALES CASTILLO, and Pelayo Hilario Valenzuela. "Valoración económica de los servicios ecosistémicos del recurso hídrico de la cuenca del río Cachi, Ayacucho, Perú." Manglar 20, no. 3 (2023): 247–56. http://dx.doi.org/10.57188/manglar.2023.028.

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Knowing economic value of ecosystem services makes it possible to identify the importance of ecosystems and their services, with which better decisions that have an impact on social well-being are expected. The objective of the study was to estimate the economic value of water ecosystem services (ES), from the Cachi basin.The novelty of the study lies in the application of a complete study of the Contingent Valuation Method (CVM), the Willingness to Pay (WTP) and the Willingness to Accept (WTA) were estimated. According to surveys carried out, 90.6% of the producers in the Cachi basin are WTP,

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KOTOV, ALEXEY A., ARTEM Y. SINEV, and VIVIANA LORENA BERRIOS. "The Cladocera (Crustacea: Branchiopoda) of six high altitude water bodies in the North Chilean Andes, with discussion of Andean endemism." Zootaxa 2430, no. 1 (2010): 1. http://dx.doi.org/10.11646/zootaxa.2430.1.1.

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It was recently demonstrated that mountain areas add to a significant increase of the number of known cladoceran species due to higher chances of endemism. We studied six water bodies in the North Chilean Andes (XV, I and II Regions of Chile), located at more than 4000 m above sea level, and found 19 species of the Cladocera. Several selected taxa are redescribed in detail. Three new species are described: Daphnia (Ctenodaphnia) paggii sp. nov. from Salar de Lagunillas, Pleuroxus fryeri sp. nov. from Crater Lake in Licancabur Volcano (type locality) and Laguna Leija, Alona altiplana sp. nov. f

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Galan, Paula-Maria, Lacramioara-Carmen Ivanescu, Livia-Ioana Leti, Maria Magdalena Zamfirache, and Dragoș-Lucian Gorgan. "Comparative Effects of Water Scarcity on the Growth and Development of Two Common Bean (Phaseolus vulgaris L.) Genotypes with Different Geographic Origin (Mesoamerica/Andean)." Plants 13, no. 15 (2024): 2111. http://dx.doi.org/10.3390/plants13152111.

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Drought stress is widely recognized as a highly detrimental abiotic stress factor that significantly impacts crop growth, development, and agricultural productivity. In response to external stimuli, plants activate various mechanisms to enhance their resistance or tolerance to abiotic stress. The common bean, a most important legume according to the FAO, serves as a staple food for millions of people worldwide, due to its rich protein, carbohydrate, and fiber content, concurrently, and water scarcity is the main factor limiting common bean production. The process of domestication and on-farm c

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Abarca, Nadya Lizeth Serrano, and Welitom Ttatom Pereira da Silva. "Locating water distribution reservoirs in rural Andean areas: a methodological approach." Journal of Water, Sanitation and Hygiene for Development 10, no. 2 (2020): 309–19. http://dx.doi.org/10.2166/washdev.2020.163.

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Abstract This study aimed to present a methodology for locating water distribution reservoirs in rural Andean areas (isolated areas, low-income population, mountainous region). The research methodology consisted of the following steps: (1) description of the problem; (2) development of the DR location protocol; (3) obtaining an algorithm; (4) calibration and adjustment; and (5) application. The obtained algorithm was based on the classification and overlapping operations of five-parameter maps (pressure limits – pressure in the water supply system from 5 to 40 mH2O; supply by gravity – guarant

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Le Quesne, Carlos, David W. Stahle, Malcolm K. Cleaveland, Matthew D. Therrell, Juan Carlos Aravena, and Jonathan Barichivich. "Ancient Austrocedrus Tree-Ring Chronologies Used to Reconstruct Central Chile Precipitation Variability from a.d. 1200 to 2000." Journal of Climate 19, no. 22 (2006): 5731–44. http://dx.doi.org/10.1175/jcli3935.1.

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Abstract An expanded network of moisture-sensitive tree-ring chronologies has been developed for central Chile from long-lived cypress trees in the Andean Cordillera. A regional ring width chronology of cypress sites has been used to develop well-calibrated and verified estimates of June–December precipitation totals for central Chile extending from a.d. 1200 to 2000. These reconstructions are confirmed in part by historical references to drought in the seventeenth and eighteenth centuries and by nineteenth-century observations on the position of the Río Cipreses glacier. Analyses of the retur

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Hurtado-Gómez, Juan Pablo, Juan M. Daza, Mario Vargas-Ramírez, V. Deepak, and Uwe Fritz. "Phylogeography of the Colombian water snake Helicops danieli Amaral, 1938 (Reptilia, Squamata, Dipsadidae) with comments on the systematics and evolution of the genus Helicops Wagler, 1828." ZooKeys 1215 (October 17, 2024): 335–58. http://dx.doi.org/10.3897/zookeys.1215.128795.

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The genus Helicops Wagler, 1828 comprises 20 species of semiaquatic snakes. It is mostly distributed in the cis-Andean region of South America, with only two trans-Andean species (H. danieli, H. scalaris). Helicops danieli is endemic to Colombia and occurs through most of the trans-Andean region. Herein two mitochondrial and two nuclear genomic markers were sequenced for 16 samples of H. danieli across most of its distribution range to understand its phylogeography. A dated tree was also generated with additional sequences from previous studies to infer the divergence times between H. danieli

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Zhu, J., A. Lücke, H. Wissel, et al. "Climate history of the Southern Hemisphere Westerlies belt during the last glacial-interglacial transition revealed from lake water oxygen isotope reconstruction of Laguna Potrok Aike (52° S, Argentina)." Climate of the Past Discussions 10, no. 3 (2014): 2417–65. http://dx.doi.org/10.5194/cpd-10-2417-2014.

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Abstract. The Southern Hemisphere westerly winds (SHW) play a crucial role in the large-scale ocean circulation and global carbon cycling. Accordingly, the reconstruction of its latitudinal position and intensity is essential for understanding global climatic fluctuations during the last glacial cycle. The southernmost part of the South American continent is of great importance for paleoclimate studies as the only continental mass intersecting a large part of the SHW belt. However, continuous proxy records back to the last Glacial are rare in southern Patagonia, owing to the Patagonian Ice She

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Zambrano, José Luis, Yamil Cartagena, Carlos Sangoquiza, et al. "Exploring Plastic Mulching as a Strategy for Mitigating Drought Stress and Boosting Maize Yield in the Ecuadorian Andes." Water 16, no. 7 (2024): 1033. http://dx.doi.org/10.3390/w16071033.

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Global food security faces a substantial risk stemming from water scarcity, particularly in regions heavily dependent on rainfall for agricultural purposes. In the Andean region, which is grappling with water scarcity, innovative and sustainable approaches are imperative for securing food sources. Plastic mulching has emerged as a potential solution to address water scarcity challenges by conserving soil moisture and optimizing growing conditions. A two-year field experiment was conducted that evaluated the efficacy of plastic mulching in preserving soil water content and reducing drought stre

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Chancay, Juseth E., and Edgar Fabian Espitia-Sarmiento. "Improving Hourly Precipitation Estimates for Flash Flood Modeling in Data-Scarce Andean-Amazon Basins: An Integrative Framework Based on Machine Learning and Multiple Remotely Sensed Data." Remote Sensing 13, no. 21 (2021): 4446. http://dx.doi.org/10.3390/rs13214446.

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Accurate estimation of spatiotemporal precipitation dynamics is crucial for flash flood forecasting; however, it is still a challenge in Andean-Amazon sub-basins due to the lack of suitable rain gauge networks. This study proposes a framework to improve hourly precipitation estimates by integrating multiple satellite-based precipitation and soil-moisture products using random forest modeling and bias correction techniques. The proposed framework is also used to force the GR4H model in three Andean-Amazon sub-basins that suffer frequent flash flood events: upper Napo River Basin (NRB), Jatunyac

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Carrera-Villacrés, David V., Iveth Carolina Robalino, Fabian F. Rodríguez, Washington R. Sandoval, Deysi L. Hidalgo, and Theofilos Toulkeridis. "An Innovative Fog Catcher System Applied in the Andean Communities of Ecuador." Transactions of the ASABE 60, no. 6 (2017): 1917–23. http://dx.doi.org/10.13031/trans.12368.

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Abstract. Fog catchers have been successfully applied in several countries around the world. In Ecuador, the Galte communities in the Andean region suffer from water deficits because they are located at an altitude higher than 3500 m above sea level. Rainfall in the area is relatively low, about 600 mm per year, with high evapotranspiration of approximately 615.74 mm per year. This study aimed to install fog catchers in Galte in 2014 and 2015 to help meet the communities’ water needs. The fog catcher system was designed to satisfy the irrigation water demand for local agricultural production,

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Calliope, S. R., A. M. Slavutsky, N. Segura, and N. C. Samman. "Application of an edible coating developed with Andean potato starch and carboxymethyl-cellulose for lipid reduction during frying." Grasas y Aceites 74, no. 4 (2023): e529. http://dx.doi.org/10.3989/gya.0103231.

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This work aimed to search for alternative uses for different varieties of Andean potatoes (Solanum tuberosum ssp andigenum) which have been reintroduced in north-western Argentina. Specifically, the development of simple and compound films made with hydrocolloids such as carboxymethyl-cellulose (CMC) and starch (S) extracted from Andean potatoes var. Runa, and its application as a cover in the deep frying of Andean potato chips var. Waycha was studied to minimize oil absorption. The effect of prior bleaching of the chips with different media was also evaluated: water, calcium chloride solution

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