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Stefanie Vandevijvere; Simon Barquera; Gabriela Caceres; Camila Corvalan; Tilakavati Karupaiah; Maria Fernanda Kroker‐Lobos; Mary L'Abbé; See Hoe Ng; Sirinya Phulkerd; Manuel Ramirez‐Zea; Salome A. Rebello; Marcela Reyes; Gary Sacks; Carmen María Sánchez Nóchez; Karina Sanchez; David Sanders; Mark Spires; Rina Swart; Viroj Tangcharoensathien; Zoey Tay; Anna Taylor; Lizbeth Tolentino‐Mayo; Rob Van Dam; Lana Vanderlee; Fiona Watson; Clare Whitton; Boyd Swinburn
... The Healthy Food Environment Policy Index (Food‐EPI) aims to assess the extent of implementation of recommended food environment policies by governments compared with international best practices and prioritize actions to fill implementation gaps. The Food‐EPI was applied in 11 countries across six regions (2015‐2018). National public health nutrition panels (n = 11‐101 experts) rated the extent o ...
... Earlier we successfully isolated and characterised endometrial (eMSC) and adipose (aMSC) mesenchymal stem cells from the same donors. Mesenchymal stem cells share biological traits but display different surface marker phenotype and migration ability. Here we extended our research to their mRNA signature using next-generation sequencing. The RNA from cells (3 biological replicates from each cell ty ...
Fernando Torres-Pérez; R. Eduardo Palma; Dusan Boric-Bargetto; Cecilia Vial; Marcela Ferrés; Pablo A. Vial; Constanza Martínez-Valdebenito; Carlos Pavletic; Alonso Parra; Pablo A. Marquet; Gregory J. Mertz
Andes orthohantavirus; Oligoryzomys longicaudatus; animal viruses; antibodies; disease transmission; human population; immunoassays; probability; regression analysis; rodents; seroprevalence; small mammals; traps; zoonoses; Chile
Abstract:
... Small mammals present in areas where hantavirus cardiopulmonary syndrome (HCPS) cases had occurred in central and southern Chile were captured and analyzed to evaluate the abundance of rodents and seroprevalence rates of antibodies to Andes orthohantavirus (ANDV). Sampling areas ranged from the Coquimbo to Aysén regions (30–45° S approx.) regions. Ninety-two sites in peridomestic ...
Gloria Molina-Mercader; Andrés O. Angulo; Tania S. Olivares; Eugenio Sanfuentes; Miguel Castillo-Salazar; Eladio Rojas; Oscar Toro-Núñez; Hugo A. Benítez; Rodrigo Hasbún
... In 2003, a new gall-inducing wasp of the genus Ophelimus was detected in the Valparaíso Region (Chile), affecting tree plantations of Eucalyptus globulus Labill and Eucalyptus camaldulensis Dehnh. Since then Ophelimus has been frequently detected in different plantations in Chile, covering a widespread area. A preliminary collaborative study suggests that the micro-wasp detected should be classifi ...
... Abscisic acid (ABA) regulates the physiological and biochemical mechanisms required to tolerate drought stress, which is considered as an important abiotic stress. It has been postulated that ABA might be involved in regulation of plant phenolic compounds biosynthesis, especially anthocyanins that accumulate in plants subjected to drought stress; however, the evidence for this postulate remains el ...
... Limited knowledge exists about the sessile species found in wave exposed subtidal environments of southeastern Pacific shores, including the temporal patterns of colonization, growth, succession, and the potential problems they pose to human industries, including oceanic aquaculture and renewable wave energy. Filling this information gap is urgent considering the increased interest to exploit thes ...
Winfred Espejo; Janeide de A. Padilha; Rodrigo A. Gonçalves; Paulo R. Dorneles; Ricardo Barra; Douglas Oliveira; Olaf Malm; Gustavo Chiang; José E. Celis
anthropogenic activities; bioaccumulation; crabs; fish; isotopes; lead; limpets; marine ecosystems; normal values; shellfish; shrimp; water pollution; Antarctic region; Argentina; Chile
Abstract:
... Environmental concentrations of Pb have been increased due to anthropogenic activities, which have provoked the released of this element to the environment in large amounts. To understand how Pb behaves in remote southern marine ecosystems, we measured Pb concentrations and isotope ratios in biota from coastal marine ecosystems of the Chilean Patagonia and the Antarctic Peninsula area. Lead concen ...
Camelidae; ecological zones; farmers; highlands; littoral zone; llamas; lowlands; mass spectrometry; social behavior; trade; visual perception; Andes region; Chile
Abstract:
... Camelid caravans have played a key role in the complex systems of interregional social interaction that characterizes Andean history. In the northernmost region of Chile, the most frequent archaeological indicators of these caravan systems are trails and rock art images. Cruces de Molinos (LL-43), a rock art site in the Lluta valley, 1100 masl, 40 km from the Pacific littoral, expands the ceremoni ...
case studies; energy; greenhouse gas emissions; mining; operating costs; pipelines; topology; water shortages; water treatment; Chile
Abstract:
... This work presents a multi-objective optimization approach to designing integrated water supply systems for the mining industry. The main goal is to estimate the total operational costs and greenhouse gas emissions from water supply systems. Chilean mining industry has been selected as a case study because of acute problem of water scarcity that it experiences. The current strategy to face the pro ...
Engraulis ringens; additive effect; anchovies; fisheries; fisheries management; model validation; models; pelagic fish; seasonal variation; uncertainty; Chile; Peru
Abstract:
... A key factor in population models, the temporal scale, should both reflect intra-annual biological processes and avoid over-parameterization. We applied the separability assumption to model recruitment process error as additive effects of random annual deviates and quarterly fixed effects (QFEM) to improve our understanding of intra-annual recruitment patterns and, at the same time, minimize the i ...
climatic factors; climatic zones; energy efficiency; health services; interviews; Chile
Abstract:
... Primary care centers are establishments with elevated social relevance and high operational energy consumption. In Chile, there more than 628 family healthcare centers (CESFAM) have been built in the last two decades and with plans for hundreds more in the next few years. We revised the architecture, construction management and energy performance of five CESFAM centers to determine possible instan ...
analysis of variance; case studies; cholesterol; hot dogs; nutrients; prices; processed meat; sodium; willingness to pay; Chile
Abstract:
... The aim of the present work was to assess consumers' willingness to pay for reformulated frankfurters in the context of the implementation of nutritional warnings. Images of frankfurter packages were designed using a fractional factorial design with 5 2-level variables: brand type, sodium reduction, saturated fat reduction, fibre claim and cholesterol claim. An online study with 548 consumers was ...
assets; case studies; cost effectiveness; decision making; ecosystems; fire spread; forests; global positioning systems; models; moderate resolution imaging spectroradiometer; monitoring; remote sensing; satellites; unmanned aerial vehicles; wildfires; Chile; Spain; United States
Abstract:
... Large wildfires can cover millions of hectares of forest every year worldwide, causing losses in ecosystems and assets. Fire simulation and modeling provides an analytical scheme to characterize and predict fire behavior and spread in several and complex environments. Spatial dynamics of large wildfires can be analyzed using satellite active fire data, a cost-effective way to acquire information s ...
Salmo salar; aquaculture; carbon; commercialization; data collection; discriminant analysis; farmed fish; fatty acids; fish fillets; markets; mass spectrometry; multivariate analysis; oxidation; principal component analysis; provenance; salmon; seafood consumption; seafoods; Canada; Chile; Norway
Abstract:
... The constant increase in seafood consumption worldwide has led to a parallel growth of the incidence of products obtained by aquaculture on the market, but also of the fraudulent commercialization of farmed products as wild-type ones. A careful characterization of the lipid component of seafood products based on chromatography-mass spectrometry techniques has been reported as a promising approach ...
Monte Carlo method; decision making; drinking water; experts; infrastructure; stakeholders; water supply; Chile
Abstract:
... In rural settings, the presence of water supply infrastructure does not guarantee that people will have access to dependable and high-quality drinking water. To evaluate deficiencies, an assessment of quality of service of rural drinking water supply systems (RDWSS) should be examined from a multi-criteria perspective, one that integrates economic, technical, administrative, and operational compon ...
ammonia; carbon; carbon footprint; electricity; energy; greenhouse gas emissions; greenhouse gases; nitrogen; oxidation; Australia; Chile; Japan; Saudi Arabia
Abstract:
... Ammonia has been proposed as a promising energy carrier and is expected to play a resilient and sustainable role in future energy scenarios. Energy systems critically impact biogeological carbon and nitrogen cycles. Thus, carbon and nitrogen footprints are two important indicators of sustainability for energy systems. In the present study, we explored the optimal supply pathway and identified impa ...
aminoglycosides; antibiotic residues; beta-lactams; chemical pollutants; family farms; farming systems; honey; lamb meat; lettuce; macrolides; maximum residue limits; milk; monitoring; peasantry; permethrin; pesticide residues; raspberries; strawberries; sulfonamides; tetracyclines; tomatoes; Chile
Abstract:
... The presence of antimicrobial and pesticide residues in products sourced from peasant family farms selected from eight regions of Chile was determined. A total of 204 samples were analyzed from family farm products, including honey, lettuce, tomato, strawberry, raspberry, lamb meat, and cow's milk. Pesticide residues were found in 43 of 107 samples tested for them, but only 4 samples had concentra ...
... Chile has an immense renewable energy potential but its integration into the energy system constitutes a major challenge. The country has a complex topography that is expressed by a divided national grid with almost isolated subsystems and wide differences in the availability of renewable energy resources. The present study aims at evaluating the potentials of combining solar power, wind power and ...
Y. Concha-Cisternas; F. Lanuza; H. Waddell; Anne Sillars; A. M. Leiva; C. Troncoso; M. A. Martinez; M. Villagrán; L. Mardones; M. Martorell; G. Nazar; N. Ulloa; A. M. Labraña; X. Diaz-Martinez; K. Sadarangani; C. Alvarez; R. Ramirez-Campillo; Alex Garrido-Mendez; Cristian Luarte; Frederick Ho; Stuart R. Gray; F. Petermann-Rocha; C. Celis-Morales;
adiposity; body mass index; cognition; cognitive disorders; cross-sectional studies; elderly; health surveys; obesity; risk factors; underweight; waist circumference; Chile
Abstract:
... Although both obesity and ageing are risk factors for cognitive impairment, there is no evidence in Chile on how obesity levels are associated with cognitive function. Therefore, the aim of the present study was to investigate the association between adiposity levels and cognitive impairment in older Chilean adults. This cross-sectional study includes 1384 participants, over 60 years of age, from ...
... This work presents the preliminary results of the first field calibration campaign performed in the Atacama Desert, Chile, between the 18 and 22 August 2014, called the Atacama Field Campaign (ATAFIC 2014). In situ measurements were performed in order to spectrally characterize the surface reflectance spectra between 0.3 and 2.5 µm, radiometric temperature (8.0–14.0 µm) and atmospheric measurement ...
... The chemical characteristics of mine tailings, organic amendments (doses), and plants are the critical factors that must be evaluated and monitored to ensure the sustainability of phytostabilization. The aim of this study was to evaluate the mobility of copper (Cu) in mine tailings (MT) of the Zone Central of Chile to which commercial humic substances were added, examining their effect on the upta ...
Francisca Di Pillo; Gustavo Anríquez; Pablo Alarcón; Pedro Jimenez-Bluhm; Pablo Galdames; Vanesa Nieto; Stacey Schultz-Cherry; Christopher Hamilton-West
... Backyard production systems (BPS) that involve poultry are a good way to improve food security and poverty alleviation. Few studies have been carried out to quantify the contribution of poultry production to these households and the constraints they might face if a priority animal disease enters these systems. This study aims to characterize the poultry-rearing BPS in central Chile and to identify ...
Bayesian theory; alluvium; base flow; basins; bedrock; climate change; data collection; groundwater; hydrograph; isotopes; mixing; rain; rivers; snow; statistical models; subsurface flow; subwatersheds; temporal variation; water management; wet season; Chile
Abstract:
... This study examines the question of how much information one can extract from a tracer-based hydrograph separation in a remote and minimally gaged alpine catchment in Chile. We combine PCA-based endmember mixing analysis to identify the sources of flow contribution to the Diguillín River with a hierarchical Bayesian mixing model to integrate spatial and temporal variability in endmember concentrat ...
Campephilus; adults; global positioning systems; habitats; home range; memory; models; remote sensing; telemetry; trees; woodpeckers; Chile
Abstract:
... CONTEXT: The switching pattern between behavioral modes provides a mechanistic basis for understanding how animals perceive and memorize the habitat quality in their home ranges. OBJECTIVES: We assessed if Magellanic woodpeckers (Campephilus magellanicus) move based on habitat quality at local (neighboring trees) and home range scales. METHODS: We used state-space models to examine the relationshi ...
... By definition, intertidal organisms are exposed to fluctuations between submersion and exposure to air due to the variation in the sea level caused, primarily, by tides and waves. Such submersion regimes have great consequences on the evolution, physiology, behavior, and ecology of intertidal marine organisms, but, paradoxically, our quantitative knowledge about submersion regimes is extremely lim ...
Ramona E. Irimia; Susana M. M. Lopes; Gastón Sotes; Lohengrin A. Cavieres; Özkan Eren; Christopher J. Lortie; Kristine French; José L. Hierro; Christoph Rosche; Ragan M. Callaway; Teresa M. V. D. Pinho e Melo; Daniel Montesinos
... Allelopathy, the release of chemicals by plants that inhibit the germination and growth of competing species, can be an important trait for invasive success. However, little is known about potential biogeographical differences in allelopathy due to divergent regional eco-evolutionary histories. To test this, we examined the allelochemical potential of the highly invasive species Centaurea solstiti ...
... Previous ethnobotanical surveys from the north Andean part of Chile, where different ethnic groups are co-existing, with the preeminence of Aymara and Atacama traditions, revealed an extensive domestic use of the local flora. In these communities, traditional medicinal uses are mainly related to the treatment of respiratory, gastro-intestinal and urinary disorders, pain and inflammation, which is ...
Chlorella vulgaris; Scenedesmus; biomass; biorefining; cell walls; chlorophyll; copper; fluorescence; heavy metals; industry; lipid content; microalgae; mine tailings; molybdenum; protein content; scanning electron microscopy; Chile
Abstract:
... The copper industry generates large quantities of mine tailings water. Thus, this study aims to select a microalgae species that is both tolerant and capable of the bioremoval of heavy metals from metal mine tailings water as well as the potential biorefinery of this microalgae biomass. Chlorella vulgaris and Scenedesmus spinosus were tested for tolerance to metal mine tailings water (MTW) in nort ...
... An overview is given for an ongoing maize breeding program that improves populations, inbreds, and hybrids in the Midwestern USA. Breeding and selection occurred under biodynamic conditions in Wisconsin, on an organic winter nursery in Puerto Rico, a biodynamic winter nursery in Hawaii, and a conventional winter nursery in Chile. Emphasis is on improving protein quality, carotenoid content, compet ...
Caligus rogercresseyi; Oncorhynchus mykiss; Piscirickettsia salmonis; Salmo salar; adults; bacteria; control methods; ectoparasites; farming systems; fish diseases; fish farms; mortality; regression analysis; Chile
Abstract:
... Caligidosis and Piscirickettsiosis are currently the most important sanitary challenges for the Chilean salmon industry. Caligidosis is caused by the ectoparasite, Caligus rogercresseyi and Piscirickettsiosis is caused by the intracellular bacterium, Piscirickettsia salmonis. Both diseases are highly prevalent and widely distributed in farming areas in Chile. The co-occurrence of the two diseases ...
birds; body condition; cats; descriptive statistics; gardens; households; insects; microchip technology; pet ownership; pets; regression analysis; surveys; wildlife; Chile
Abstract:
... The domestic cat (Felis catus) has become a worldwide threat to wildlife. The potential impact of owned cats on wildlife in Chile has not been documented at a large scale. The purpose of this study was to investigate the number and type of prey that owned cats bring back in Chile and its relation with responsible ownership practices. An online survey was distributed to 5216 households that include ...
... Phalacroma rotundatum is a rare cosmopolitan heterotrophic dinoflagellate. This species, included in the IOC-UNESCO Taxonomic Reference List of Harmful Microalgae, may be a diarrhetic shellfish poisoning (DSP) toxin vector, but little is known about its ecophysiology and behavior. A vertical net haul collected during the austral summer of 2018 in Reloncaví Sound (Chilean Patagonia) revealed ...
... Cemeteries can help conserve biodiversity in urban landscapes, but their capacity to support native species is likely to be influenced by variables at different spatial scales. There is growing evidence on how landscape and patch-level attributes influence biodiversity in urban parks. However, there is limited evidence about cemeteries. Park cemeteries are dominated by vegetation because they are ...
... Climate change has profound environmental and socio-economic implications. To analyze climate change in relation to crops, a wide variety of agro-climatic indices has been proposed by the scientific community. In this study, changes in a set of 12 agro-climatic indices related to temperature were investigated in Central Chile over a 56-year period (1961–2016). The indices were computed based on da ...
Andisols; Fragaria ananassa; anthocyanins; antioxidant activity; ascorbic acid; fertilizer application; flavonols; fruits; high performance liquid chromatography; organic fertilizers; phosphorus; polyphenols; strawberries; tandem mass spectrometry; Chile
Abstract:
... BACKGROUND: Strawberries are consumed worldwide. In Chile, strawberry production has been established in Andisols, were phosphorus is scarce. Traditional fertilization (TF) and organic fertilization (OF) have both been established there. This study examined their impact on the polyphenolic content of strawberries. RESULTS: Two anthocyanins were identified by high performance liquid chromatography ...
... Several species of the Botryosphaeriaceae family have been associated with branch canker, dieback, and stem end rot in avocado (Persea americana Mill.). In Chile, the incidence of diseases affecting the avocado tree increased from 2011 to 2016, which coincided with a severe drought that affected avocado production. Moreover, distant countries importing avocados from Chile also reported an increase ...
... English (Persian) walnut (Juglans regia) trees affected by root and crown rot were surveyed in five regions of central Chile between 2015 and 2017. In each region, nine orchards, ranging from 1 to 21 years old, were randomly selected and inspected for incidence and severity of tree decline associated with crown and root rot. Soil and symptomatic crown and root tissues were collected and cultured i ...
... Chemical characteristics and the sources of submicron particles (<1 μm in diameter) were investigated in Valle Alegre, the coastal area of Central Chile. The chemical composition of particles was studied by using a Soot particle Aerosol Mass Spectrometer and Multi-Angle Absorption Photometer. Submicron particles were dominated by organics (42% of mass) and sulfate (39% of mass) while the mass frac ...
Daniel Gaitán-Cremaschi; Laurens Klerkx; Jessica Duncan; Jacques H. Trienekens; Carlos Huenchuleo; Santiago Dogliotti; María E. Contesse; Walter A. H. Rossing
... Dominant food systems are configured from the productivist paradigm, which focuses on producing large amounts of inexpensive and standardized foods. Although these food systems continue being supported worldwide, they are no longer considered fit-for-purpose as they have been proven unsustainable in environmental and social terms. A large body of scientific literature argues that a transition from ...
Lepechinia; aerial parts; chemical composition; essential oils; gas chromatography; hydrodistillation; indigenous species; medicinal plants; sesquiterpenoids; Chile
Abstract:
... Lepechinia salviae (Lindl.) Epling is an endemic species from northern Chile, where it is important medicinal plant. Essential oil from the aerial parts of L. salviae was extracted using hydro-distillation and analyzed using Gas Chromatography linked to a MS detector and a FID detector. Total thirty-four components (99.3 %) were identified; oxygenated sesquiterpenes τ-cadinol (12.84 %), ledol (10. ...
United States Environmental Protection Agency; World Health Organization; arsenic; bottled water; chemical composition; containers; drinking water; groundwater; human health; humans; ingestion; lifestyle; markets; nitrates; pH; risk; risk assessment; water quality; Chile
Abstract:
... The Chilean bottled water market has experienced continuous growth since 2000, surpassing 500 million liters sold in 2015. Generally, consumers tend to associate the consumption of bottled water with a healthy lifestyle, but current Chilean law does not require the product to be labelled with the chemical composition, thus preventing consumers from making informed choices.Our study focuses on dete ...
decision making; health policy; immunization; public policy; vaccines; Chile
Abstract:
... A National Immunization Technical Advisory Group (NITAG) provides independent, evidence–based recommendations to the Ministry of Health for immunization programmes and policy formulation. In this article, we describe the structure, functioning and work processes of Chile’s NITAG (CAVEI) and assess its functionality, quality of work processes and outputs, and integration of the committee into the M ...
... Warning labels (WLs) are the newest paradigm of nutrient-based, front-of-package labels (FOP) that have been consistently shown to be more effective at informing consumer purchases than other FOP labels. Their effectiveness may be attributed to their design and the consistency in the information they communicate. The present study assessed designs effects of WLs in improving understanding and perc ...
... It is not currently known which individuals with chronic Chagas disease (ChD) will develop cardiopathy in a determined period and which will be maintained asymptomatic with normal routine laboratory tests all their lives. The parasite burden is a factor that could explain this different evolution. The objective of this study was to quantify T. cruzi burden by real-time PCR in blood (qPCR-B) and de ...
Cleridae; ancestry; carnivores; ecosystems; forest communities; geographical distribution; lectotypes; monophyly; natural history; new combination; new genus; new species; species diversity; Argentina; Brazil; Chile
Abstract:
... The genera CorinthiscusFairmaire and Germain, 1861, Morulaptoma Opitz, new genus, and Petorca Opitz, new genus, are redescribed/described, and revised. The species composition of these genera involves: Corinthiscus insignicornisFairmaire and Germain, 1861, Morulaptoma canuta Opitz, new species, Morulaptoma nigra (Chevrolat, 1876), new combination, and Petorca denticolla (Spinola, 1849), new combin ...
Araucaria araucana; climate; conifers; dioecy; females; growing season; growth rings; males; models; nutrient uptake; resource allocation; seed dispersal; sexual dimorphism; snowpack; soil nutrients; spring; summer; tree age; tree growth; trees; vegetative growth; water stress; winter; Andes region; Chile
Abstract:
... Trees’ growth responses to climate may depend on tree age and site conditions. In dioecious species, sex adds an extra level of complexity due to differential reproductive effort between the sexes and potentially sex-related dimorphic growth. Araucaria araucana is a long-lived dioecious conifer with outstanding morphological and functional adaptations considered an excellent model to explore inter ...
... With ongoing climate change, aquaculture faces environmental challenges similar to those of natural ecosystems. These include increasing stress for calcifying species, e.g. macroalgae and shellfish. In this context, ocean acidification (OA) has the potential to affect important socioeconomic activities, including shellfish aquaculture, due to changes in the seawater carbonate system. However, coas ...
anthropogenic stressors; biodiversity; collaborative management; ecosystem services; fisheries; fisheries management; global change; governance; issues and policy; leadership; marine ecosystems; social capital; traditional technology; uncertainty; Chile
Abstract:
... Marine ecosystem services are in global decline, which requires new transformational changes in governance to cope with multiple anthropogenic stressors. We perform a systematic literature review of the biodiversity and ecosystem services outcomes of a governance transformation toward comanagement through the allocation of territorial user rights to artisanal fisher associations (TURFs) in Chile. ...
Didymosphenia geminata; anthropogenic activities; basins; community structure; freshwater; geographical distribution; homogenization; multivariate analysis; rivers; spatial variation; species diversity; Chile
Abstract:
... BACKGROUND: Didymosphenia geminata (Lyngbye) M. Schmidt is a freshwater invasive benthic diatom native to oligotrophic systems of the Northern Hemisphere. Since 2010, freshwater systems of south-austral Chile, have experienced a progressive invasion of this species between 37° 18′ S and 54° 30′ S. This invaded area is characterized by biogeographic heterogeneity, anthropic pressure and lack of kno ...
... Breeding status directly affects the at-sea behaviour of seabirds, resulting in marked differences between breeding and non-breeding birds. In this study, we report for the first time the foraging and diving behaviour of coexisting incubating, courting and non-breeding King Penguins (Aptenodytes patagonicus) at a recently established colony in Tierra del Fuego, Chile, to determine differences in ( ...
business enterprises; carbon footprint; case studies; decision making; eco-efficiency; emissions; environmental impact; environmental performance; issues and policy; life cycle assessment; models; raspberries; stakeholders; Chile
Abstract:
... Nowadays, sustainability has become of increasing concern in policy and the decision making of stakeholders. Companies have been increasing their attention to their environmental performance. In order to measure sustainability performance, different approaches have been proposed. The joint application of Life Cycle Assessment (LCA) and Data Envelopment Analysis (DEA), called LCA+DEA, is used to as ...
... Chagas disease is a vector-borne disease caused by the parasite Trypanosoma cruzi, and transmitted by triatomine insects to several mammal species. In Chile, the wild triatomine species are the endemic Mepraia species, and the only domestic vector of Chagas disease is Triatoma infestans. The aim of this study was to determine the competence of M. gajardoi compared to T. infestans as a T. cruzi vec ...
... Fats and oils are the most common pollutants in wastewater, and are usually eliminated through physical processes in wastewater treatment plants, generating large amounts of fats and residual oils that are difficult to dispose of and handle. The degradation of fatty wastewater was studied in a real wastewater treatment plant and a laboratory scale treatment unit. The wastewater treatment plant, lo ...
case studies; drought; issues and policy; livelihood; markets; Alberta; Argentina; Chile
Abstract:
... Institutional analysis is used to assess macro (in)formal policy approaches while livelihoods analyses takes a micro bottom up approach to analyse how livelihoods can be improved. The two approaches are rarely linked and scarcely applied to the understudied problem of drought. Hence this paper addresses the question: How can the livelihoods approach be combined with institutional analysis and how ...
... The Baker-Martínez fjord system (Chile, 48°S) is a transitional environment between the terrestrial ecosystems of Patagonia and the SE Pacific Ocean. This unique setting makes it an ideal system to evaluate land-ocean gradients in sediment composition and in a range of biogeochemical variables. Here, we studied the composition and organic geochemistry of surface sediments deposited in the Baker-Ma ...
... Diatomaceous soils are composed by a mix of sand, fines and fossilized diatoms, which are unicellular microalgae composed by a strong silica frustule of 10 to 100 μm in size, with rough surface and enclosing a void that could give the soil a very low dry density. Due to high water storage capacity within frustules, diatomaceous soils present high Liquid Limit and classifies as high plastic silt (M ...
... A magnetotelluric study was carried out in the San Pedro‐Linzor volcanic chain, North Chile, to identify possible magmatic structures and hydrothermal systems associated with volcanoes of Holocene activity, considering previous petrochemical studies pointing to crystallization depths of approximately 8 km. Three‐dimensional resistivity models based on magnetotellurics data of the San Pedro‐Linzor ...
Ara macao; biogeography; biomass; ecological footprint; fauna; functional properties; habitats; parrots; planning; prioritization; species richness; Chile
Abstract:
... AIM: Conservation planning and prioritization generally have focused on protecting taxa based on assessments of their long‐term persistence or on protecting habitats and sites with high species richness. An implicit assumption of these approaches is that species are equally different from each other. We propose metrics for conservation planning and prioritization that include consideration of diff ...
... We determined the seasonal diet of the Andean fox Lycalopex culpaeus in three habitats in the Atacama Desert, northern Chile, by analyzing their scat contents. We estimated the biomass and the number of individuals of each prey species consumed and compared our results with those of other studies on Lycalopex foxes in Chile and South America. In general, the L. culpaeus diet was characterized by a ...
... Cystic echinococcosis (CE), caused by Echinococcus granulosus, is a chronic and debilitating zoonotic larval cestode infection in humans, which is principally transmitted between dogs and domestic livestock, particularly sheep. Human CE occurs in almost all pastoral communities and rangeland areas of the underdeveloped and developed world. Control programmes against CE have been implemented in sev ...
air; ambient temperature; cities; decision making; energy; energy poverty; fuelwood; households; indoor air pollution; insulating materials; monitoring; particulates; pollution control; social inequality; socioeconomic factors; Chile
Abstract:
... Firewood is the main fuel used for heating in Chile, but its inefficient use is producing severe episodes of air pollution. To address this issue, authorities implement Air Pollution Management Plans (PDAs), which include actions such as setting moisture requirements for firewood, replacing old wood-stoves, temporarily banning the use of firewood, and improving homes´ thermal insulation. However, ...
Marcelo A. Aizen; Cecilia Smith‐Ramírez; Carolina L. Morales; Lorena Vieli; Agustín Sáez; Rodrigo M. Barahona‐Segovia; Marina P. Arbetman; José Montalva; Lucas A. Garibaldi; David W. Inouye; Lawrence D. Harder
Bombus dahlbomii; Bombus ruderatus; Bombus terrestris; anthropogenic activities; bees; disease transmission; expert opinion; flowers; international policy and programs; international trade; invasive species; nectar robbing; politics; pollination; Argentina; Chile
Abstract:
... The global trade of species promotes diverse human activities but also facilitates the introduction of potentially invasive species into new environments. As species ignore national boundaries, unilateral national decisions concerning species trade set the stage for transnational species invasion with significant conservation, economic and political consequences. The need for a coordinated approac ...
... Chemical correlation of intermediate tephra deposits using microanalytical data is problematic because (i) the phenocryst content of their component glass shards affects major and trace element analyses (ii) bulk chemistry can be affected by variations in mineral/lithic components across the fall-out, and (iii) weathering readily alters their composition. All of these problems affect the Lepué Tep ...
boreal forests; decision making; forest policy; land use; land use and land cover maps; national forests; politics; stakeholders; sustainable forestry; Argentina; Chile; Uruguay
Abstract:
... The Southern Cone countries of Chile, Argentina and Uruguay have a common background regarding land use and land cover with a total of 46 million ha of forests whose benefits are prospering for the regional framework of the Southern Cone. The three countries do not articulate or interchange on their forest policies beyond circumstantial agreements. In this regard, and as our first research focus, ...
... Neobenedenia spp. are harmful ectoparasites that can cause disease and mortality in aquaculture systems. The identification of Neobenedenia spp. is difficult using only morphological characteristics; therefore, molecular techniques represent a very useful tool to differentiate species, as recently demonstrated for Neobenedenia melleni and Neobenedenia girellae. In line with this, DNA barcoding (a ...
consumer debt; data collection; labor market; loans; models; risk; Chile
Abstract:
... This article provides data on the simulation results of consumer debt default for bank and non-bank lenders in Chile, using the model described in Ref. [1]. Furthermore, it provides a summary description of all the codes used for the simulation exercises and how to implement them from publicly available microdata sources. The data is of particular interest for those interested in analyzing the sen ...
... Recent studies show that the process of extraction of olive oil results in a large amount of waste. Around 20% the oil is obtained in the process and the remaining 80% corresponds to mainly two types of waste, known as orujo and alperujo. These residues were stored in pools for 6 months in an uncontrolled environment. The reservoirs are open and generate Odorous Volatile Organic Compounds (VOCs) a ...
data collection; decision making; energy; Chile; Latin America
Abstract:
... The data presented in this article are related to the research article entitled “Solar domestic hot water regulation in the Latin American residential sector with the implementation of the Energy Performance of Buildings Directive: The case of Chile” (López-Ochoa et al., 2019), which evaluates the possibility of adapting Spanish solar domestic hot water regulations in Chile, with the objective of ...
acoustics; basins; geophysics; research; silicates; Chile; Panama
Abstract:
... Hydrographic data and tracers from several ship‐based sections show the location and structure of a deep eastern boundary current in the Chile Basin. The current is centered above the Peru‐Chile Trench at 2,500–3,400 m and transports up to 6 Sv of low‐potential vorticity, high‐silicate water south toward Drake Passage. Deep current velocities from direct Lowered Acoustic Doppler Current Profiler m ...
... We determined which variables are predictive of normal-weight (N) Chilean 4-year-olds developing overweight/obesity when entering primary school. This study used national data of preschoolers (PK, age 4) in 2011 through 2015, and the same children in the first grade (1st G, age 6) in 2013 through 2017. We formed longitudinal cohorts considering PK as the baseline and 1st G as the follow-up and inc ...
Leopardus jacobita; cameras; research; wildlife; Andes region; Argentina; Bolivia; Chile
Abstract:
... Context. Understanding the factors that determine the distribution and abundance of species is an important aim of ecology and prerequisite for conservation. The Andean cat (Leopardus jacobita) and the pampas cat (L. colocolo) are two of the least studied felids. Both are threatened, of similar size and live sympatrically in the Andes of Argentina, Bolivia, Chile, and Perú. Aims. We aimed at estim ...
... Upwelling filaments are long (≈ 100's km) narrow (O ≈ 10 km) structures in the coastal ocean. They export nutrients and prevent the movement of larvae along the coast. Filaments can be observed in satellite images and in numerical models, but their manual identification and characterization is complex and time consuming. Here we present a Matlab code for a manual method to assist experts in this t ...
... Trypanosomatids affecting honey bees, Crithidia mellificae and Lotmaria passim, have been poorly studied in South America. We therefore analyzed their presence in Africanized and European honeybees from Uruguay, Argentina and Chile collected between 1990 and 2011 and assessed their association with other bee parasites and pathogens. Crithidia mellificae was not detected while L. passim was wide-sp ...
... Tree regeneration following even-aged silvicultural methods in the evergreen forest type (EFT) has been scarcely studied in Chile, although this is the largest forest type in a region of highly productive native forests. In 1981/1982 a total of nine 1.44-ha experimental units with old-growth forests of the EFT were subjected to block clearcutting (BCC), strip clearcutting (SCC) and reserve shelter ...
Priscylla da Mata Pavione; Karla Gonçalves da Costa; Clayton Perônico; Mark E. McMaster; Joanne L. Parrott; L. Mark Hewitt; Kelly R. Munkittrick; Francisco Candido Cardoso Barreto; Thiago Hollanda Basilo; Marcelo Paes Gomes; Ricardo Wagner Reis Filho; Tatiana Heid Furley
benthic organisms; bioaccumulation; environmental impact; environmental law; environmental monitoring; environmental quality; estuaries; fish; fish health; invertebrates; issues and policy; mining; models; pulp and paper mill effluents; rivers; sediments; stakeholders; surface water; surveys; water management; watersheds; Australia; Brazil; Canada; Chile; Sweden; United States
Abstract:
... In Brazil, there are no unified and effective environmental monitoring models for bodies of water. Thus, several methodologies are used that result in information that is often difficult to compare, especially for stakeholders involved in regional water management. Studies in some countries such as Australia, Chile, the USA, and Sweden use the monitoring model implemented in Canada that was develo ...
Pottiaceae; highlands; leaves; light microscopes; mosses and liverworts; new species; photographs; scientific illustration; taxon descriptions; Andes region; Argentina; Bolivia; Chile; Colombia; Ecuador; Peru; Venezuela
Abstract:
... A new moss species, Didymodon ochyrarum J.A. Jiménez & M.J. Cano, is described and illustrated from the tropical Andean highlands of Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile and Argentina. The species is distinguished morphologically by its lanceolate to long-lanceolate leaves that are strongly appressed when dry, leaf base widely ovate, acute apices, plane leaf margins and distally bist ...
Georgina Gómez; Regina Mara Fisberg; Ágatha Nogueira Previdelli; Cristiane Hermes Sales; Irina Kovalskys; Mauro Fisberg; Marianella Herrera-Cuenca; Lilia Yadira Cortés Sanabria; Martha Cecilia Yépez García; Rossina Gabriella Pareja Torres; Attilio Rigotti; Viviana Guajardo; Ioná Zalcman Zimberg; Anne Chinnock; Ana Gabriela Murillo; Juan Carlos Brenes; on behalf of the ELANS Study Group
... This study aimed to assess diet quality score (DQS), considering healthy and unhealthy foods and nutrients, and diet diversity score (DDS) as indicators of risk of noncommunicable diseases in eight Latin American countries, and to verify the possible differences considering country, sex, age, socioeconomic, and nutritional status. A multicenter household population-based cross-sectional survey was ...
... Physiological measures, such as blood variables, are commonly used to assess the welfare state of animals. The basal concentration of indicators such as plasma cortisol, white blood cells, cytokines, and indicators of oxidative stress could vary depending on the coping style of individuals. In the case of horses, coping styles could be associated to the activity they perform because owners seek di ...
altitude; climate classification; climatic factors; latitude; light intensity; microclimate; models; renewable energy sources; statistical analysis; temperature; time series analysis; Australia; Chile; Costa Rica
Abstract:
... In this paper a model is used to estimate the diffuse radiation using the Boland-Ridley-Lauret (BRL) model, which is developed for Chile, Costa Rica, and Australia. Additionally, artificial Direct Normal Irradiance time series are determined from the diffuse fraction results estimated by the model. Both estimates achieve excellent agreement based on the bias and normalized scatter. The relationshi ...
Diplodia seriata; Malus domestica; apples; branches; cultivars; dieback; fruit trees; fungal diseases of plants; genes; host-pathogen relationships; new geographic records; pathogenicity; plant pathogenic fungi; ribosomal DNA; stem cankers; tissues; Chile
Abstract:
... During 2017 and 2018, a survey of diseased apple trees (Malus × domestica) was conducted in seven commercial orchards of cultivars Cripps Pink, Fuji, Granny Smith, and Royal Gala located in central Chile (34°09' to 35°26' S). Symptoms on branches and twigs could be observed from October to April on >7-year-old apple trees and were characterized by short internodes and dead twigs and branches. Cros ...
... Globally, Chile is the second largest producer of mussels, with 99% of production concentrated in the inland sea of the Los Lagos Region, Southern Chile. This study reveals that seasons produce a drastic difference in the cadmium concentration (Cd) in marine mussels in bay, channel, and fjord ecosystems in this area. As the global mussel industry continues its rapid expansion, a complete understan ...
air temperature; climate models; climatic factors; coasts; landscapes; topography; Andes region; Chile
Abstract:
... This study evaluates hindcast simulations performed with a regional climate model (RCM, RegCM4) driven by reanalysis data (ERA-Interim) over the Pacific coast and Andes Cordillera of extratropical South America. A nested domain configuration at [Formula: see text] ([Formula: see text] 50 km) and [Formula: see text] ([Formula: see text] 10 km) spatial resolutions is used for the simulations. RegCM4 ...
... Recent Global Positioning System observations of major earthquakes such as the 2014 Chile megathrust show a slow preslip phase releasing a significant portion of the total moment (Ruiz et al., 2014, https://doi.org/10.1126/science.1256074). Despite advances from theoretical stability analysis (Rubin & Ampuero, 2005, https://doi.org/10.1029/2005JB003686; Ruina, 1983, https://doi.org/10.1029/jb088ib ...
Felipe Hernández; Claudio Verdugo; Francisca Cárdenas; Rodrigo Sandoval; Nelly Morales; Pablo Olmedo; Andrea Bahamonde; Dennis Aldridge; Gerardo Acosta-Jamett
... Cystic echinococcosis (CE) is a zoonotic parasitic disease associated with Echinococcus granulosus. The parasite is maintained by domestic and wild canids as definitive hosts with several ungulate species as intermediate hosts in domestic and peridomestic transmission cycles. In Chile, CE is endemic, and the role of livestock and dogs (Canis lupus familiaris) in the cycle and the accidental infect ...
... The biological and functional diversity of ectomycorrhizal (ECM) associations remain largely unknown in South America. In Patagonia, the ECM tree Nothofagus pumilio forms monospecific forests along mountain slopes without confounding effects of vegetation on plant–fungi interactions. To determine how fungal diversity and function are linked to elevation, we characterized fungal communities, edaphi ...
Cheryl A. Kelley; Brad M. Bebout; Jeffrey P. Chanton; Angela M. Detweiler; Adrienne Frisbee; Brooke E. Nicholson; Jennifer Poole; Amanda Tazaz; Claire Winkler
... The aim of this research was to investigate the competition between methanogens and sulfate-reducing bacteria in hypersaline environments. Samples of photosynthetic microbial mats, both soft mats (salinities of 55–126 ppt) and gypsum-hosted endoevaporite mats (salinities of 77–320 ppt), were obtained from hypersaline environments in California, USA, Mexico and Chile. Methane production was determi ...
... This experiment was carried out to determine the effect of breed on mRNA and protein expression levels of lipogenic enzymes acetyl-CoA carboxylase α (ACC), fatty acid synthase (FAS), stearoyl-CoA desaturase 1 (SCD1) plus sterol regulatory element binding transcription factor 1c (SREBP1c) in the subcutaneous fat (SCF) from the back of the animal, and tail fat (TF) of both Chilota and Suffolk ...
... Anchovy makes up 90% of pelagic fishery catches in northern Chile. For the present work, anchovy (Engraulis ringens, Jenyns 1842) catches between 1997 and 2016 were analyzed to determine changes in distribution, concentration, and reproductive behavior before, during, and after ENSO events, using spatial indexes: gravity center (GC), inertia, coverage (CI), Gini index, and gonadosomatic index (GI) ...
... Protection and management of water quality across agricultural landscapes requires a sound understanding of runoff and/or leaching of nutrients and other agrichemicals from agricultural production systems to receiving waters. We, in a large leaching columns experiment, studied the losses of dissolved organic N (DON), dissolved organic carbon (DOC), dissolved inorganic N (DIN) and total dissolved N ...
Sphagnum magellanicum; ammonium nitrate; climatic factors; ecosystem services; fertilizers; field experimentation; horticulture; mosses and liverworts; nitrogen; nonpoint source pollution; peatlands; phosphorus; sodium phosphate; surface water; world markets; Argentina; Chile
Abstract:
... Peatlands provide important ecosystem services which includes the production of fibers of Sphagnum moss that are used as a substrate in horticulture. Sphagnum fibers are greatly desired by international markets, resulting in an increase in their extraction, thus causing environmental deterioration through overexploitation, especially in Patagonian peatlands. Given this environmental problem, the p ...
... Chile is the third largest exporter of kiwifruit in the world. Its varietal production has traditionally been focused on green-fleshed kiwifruit varieties, with ‘Hayward’ being the most exported variety. ‘Soreli’ is a new Italian kiwifruit variety, which is characterized by its early ripening, big size, sweet taste, as well as its yellow flesh. This gives ‘Soreli’ a good opportunity to promote the ...
... This short communication investigated in vitro differences between commercial disinfectants types (n = 36), doses of application, and time of action in the elimination of Piscirickettsia salmonis, the most important bacterium affecting farmed salmon in Chile. Seven different treatments were examined, including active and inactive chlorine dioxides, glutaraldehyde, hypochlorite disinfectants and de ...
Sphagnum; air temperature; carbon; carbon dioxide; carbon sinks; cattle; clearcutting; ecosystem respiration; ecosystems; eddy covariance; forests; grazing; gross primary productivity; humans; models; mosses and liverworts; net ecosystem exchange; peatlands; photosynthetically active radiation; poorly drained soils; soil water; uncertainty; water table; Argentina; Chile
Abstract:
... Peatlands are characterized by their large carbon (C) storage capacity and represent important C sinks globally. In southern Chile, young peatlands (few centuries old) have originated due to clearcutting or fire at forest sites with high precipitation on poorly drained soils. These novel ecosystems are called anthropogenic peatlands here. Their role in the regional C cycle remains largely unknown. ...
... The fishery of Lithodes santolla is the second most productive lithodid crab fishery in the world and in southernmost South America is considered a mixed fishery due to its co-occurrence with Paralomis granulosa. Fishing takes place in Argentina and Chile, where regulations restrict to land only males larger than a legal size, but with variable fishing seasons. All females and small males must be ...
... This study examines individually the effects of intra- and inter-regional geographic diversification on the export performance of firms from the Chilean fresh fruit sector. It also explores the direct effect of related product diversification on export performance and its role as a moderator in the relationship between geographic diversification and export performance. By employing panel trade dat ...
Pinus pinea; early development; environmental impact; forests; fruit trees; fruiting; nuts; orchards; Chile
Abstract:
... Stone pine (Pinus pinea L.) is well-known for its fruits, the pine nuts, which are considered a delicacy and are the most expensive dry fruits in the world. This fruit is harvested mostly from natural forests, and limited advances have been made for cultivating it as a fruit tree. This study was aimed at assessing the effect of plantation spacing and seed source on early fruiting of stone pine pla ...
... Polycyclic aromatic hydrocarbons, PM₂.₅ and micrometer-sized particles are mainly emitted by residential wood combustion, affecting air pollution in the cities of Chile. Eucalyptus globulus (EG) at 0% and 25% wood moisture was burning using a new controlled combustion chamber for emissions (3CE) to determine the emission factors of PM₂.₅, micrometer-sized particle numbers (0.265μm to 34.00μm) and ...
... Flavobacterium psychrophilum is the causative agent of Rainbow Trout Fry Syndrome which has had a major impact on global salmonid aquaculture. Recent outbreaks in Atlantic salmon in Scotland and Chile have added to the need for a vaccine to protect both salmon and trout. At present no licensed vaccines are available in Europe, leaving antibiotics as the only course of action to contain disease out ...
... In soils multi-contaminated with heavy metal and metalloids, the establishment of plant species is often hampered due to toxicity. This may be overcome through the inoculation of beneficial soil microorganisms. In this study, two arsenic-resistant bacterial isolates, classified as Pseudomonas gessardii and Brevundimonas intermedia, and two arsenic-resistant fungi, classified as Fimetariella rabenh ...
... Countries are placed under high ecological pressure during economic expansion periods, especially in the construction sector. In order to tackle the effects of such expansion, it is necessary to clearly identify its principal sources of impact. In this respect, the present methodology is proposed, where two dwelling projects (one in Spain, where the methodology is initially implemented, and a seco ...