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moths; Noctuidae; Lycium; cacti and succulents; habitats; new geographic records; Chile
Abstract:
... Noctuid moths flutter in the high Andes nights at 4,000 m. s. n. m. Their larvae feed on aerial or underground parts of succulent plants. Many of these species are new to science. Strategies and adaptations of the moths for survival in the high Andes mountains are: a circulatory system that includes an abdominal thoracic countercurrent heat exchanger, and they are insulated from the environment by ...
... Secondary metabolites, DIBOA, HBOA, 7-OH-HBOA, BOA and gallic acid, were isolated and quantified from Calceolaria thyrsiflora Graham, a native medicinal plant of Chile belonging to the Scrophulariaceae family. The highest DIBOA contents were determined in leaves (145 mmol kg⁻¹ dry wt) and flowers (161 mmol kg⁻¹ dry wt). Antibacterial activities of DIBOA, HBOA, BOA, gallic acid and infusions of flo ...
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 ...
Food and Agriculture Organization; consumer protection; food composition; food industry; foods; funding; human resources; international trade; nutrient databanks; nutrition; Argentina; Chile; Paraguay
Abstract:
... Food composition data play a key role in areas such as nutrition, agriculture, food industry, and trade. Therefore it is still essential to have recent and reliable data on the composition of the main foodstuffs that a country produces and consumes. In Argentina the objective is to form a national network of institutions to provide information and data to a national food composition database (NFCD ...
... Throughout Earth’s most extreme environments, such as the Kalahari Desert or the Arctic, hunter–gatherers found ingenious ways to obtain proteins and sugars provided by plants for dietary requirements. In the hyperarid Atacama Desert, wild plant resources are scarce and unevenly distributed due to limited water availability. This study brings together all available archaeobotanical evidence gather ...
... The dredge oyster, Ostrea chilensis, is native to New Zealand and Chile. Although this species has been commercially fished for decades, it is only recently that farming trials have been initiated. The “wild” commercial fishery was decimated in the 1980s by the parasite, Bonamia and so breeding for disease resistance is imperative for the progress of the aquaculture industry. Cryopreservation can ...
Tamara Valenzuela; Joaquin I. Rilling; Giovanni Larama; Jacquelinne J. Acuña; Marco Campos; Nitza G. Inostroza; Macarena Araya; Katherine Altamirano; So Fujiyoshi; Kyoko Yarimizu; Fumito Maruyama; Milko A. Jorquera
... Microbiota associated with bivalves have drawn considerable attention because studies have suggested their relevance to the fitness and growth of marine bivalves. Although the mussel Choromytilus chorus is a valuable resource for Chilean aquaculture and fisheries, its microbiota is still unknown. In this study, the composition and predicted functions of the bacterial community in tissues of C. cho ...
... Anthropogenic mercury accumulation in lake sediments has been studied extensively, but natural processes that controlled mercury accumulation in the past are still poorly understood. We present a 17,300-year record of mercury accumulation in the sediments of Lake Hambre, southernmost Patagonia, Chile (53°S, 70°W), in combination with an investigation of environmental changes in the region. Mercury ...
... At times when attention on climate issues is strongly focused on the assessment of potential impacts of future climate change due to the intensification of the planetary greenhouse effect, it is perhaps pertinent to look back and explore the consequences of past climate variability. In this article we examine a large disruption in global climate that occurred during 1877-1878, when human influence ...
deformation; earthquakes; geodesy; global positioning systems; kinematics; models; Chile
Abstract:
... Large earthquakes produce crustal deformation that can be quantified by geodetic measurements, allowing for the determination of the slip distribution on the fault. We used data from Global Positioning System (GPS) networks in Central Chile to infer the static deformation and the kinematics of the 2010 moment magnitude (Mw) 8.8 Maule megathrust earthquake. From elastic modeling, we found a total r ...
climate change; drought; fire hazard; fire regime; fire season; forest fires; forest management; forest plantations; forests; land use; landscape management; landscapes; planning; prediction; rain; statistics; temperature; vegetation cover; winter; Chile
Abstract:
... Forest fire activity has increased in recent years in central and south‐central Chile. Drought conditions have been associated with the increase of large wildfires, area burned and longer fire seasons. This study examines the influence of drought on fire regimes and discusses landscape management opportunities to decrease fire hazard. Specifically, we investigate the effect of the 2010–2015 Megadr ...
Landsat; evaporation; freshwater; lakes; meteorological data; rain; snowmelt; surface area; temperature; water management; Andes region; Chile
Abstract:
... Andes central Chile (32ºS-36ºS) / Lakes Mountain lakes play a key role in the terrestrial freshwater reservoir, both for storage of snow melt and precipitation. Although lakes are sensitive to climate variability, the effect of global warming on water availability remains uncertain. Semiarid regions are especially sensitive to relatively small changes in temperature and precipitation as these have ...
... Geophysical observations from the 2011 moment magnitude (Mw) 9.0 Tohoku-Oki, Japan earthquake allow exploration of a rare large event along a subduction megathrust. Models for this event indicate that the distribution of coseismic fault slip exceeded 50 meters in places. Sources of high-frequency seismic waves delineate the edges of the deepest portions of coseismic slip and do not simply correlat ...
... In 2016, a massive harmful algal bloom (HAB) of Alexandrium catenella around Chiloé island caused one of the major socio-ecological crisis in Chilean history. This red tide occurred in two distinct pulses, the second, most anomalous, bursting with extreme toxicity on the Pacific coast, weeks after the highly controversial dumping off Chiloé of 4,700 t of rotting salmons, killed by a previous HAB o ...
United Nations; governance; issues and policy; politics; risk; sustainable development; trade; Caribbean; Chile; China; Latin America
Abstract:
... During the initial implementation of the 2030 Agenda for Sustainable Development (the 2030 Agenda), the Second Ministerial Meeting of the Forum of China and the Community of Latin American and Caribbean States (CELAC) was held in Santiago, Chile, in January 2018. During this forum, China officially invited 33 countries in Latin America and the Caribbean (LAC) to join the Belt and Road Initiative ( ...
carbon dioxide; carbon footprint; electricity; electricity costs; electricity generation; greenhouse gas emissions; mining; power plants; solar collectors; solar energy; thermal energy; Chile
Abstract:
... This study calculates the LCOE (Levelized Cost of Energy) on the PSDA (Atacama Solar Platform) for a solar–solar energy mix with the objective of evaluate new options for continuous energy delivery. LCOE was calculated for three 50 MW (megawatt) power plants: A PV (photovoltaic), a CSP (concentrated solar power) plant with 15 h TES (thermal energy storage) and a hybrid PV-CSP plant constituted wit ...
... Atmospheric nuclear tests (1945–1980) have led to radioactive fallout across the globe. French tests in Polynesia (1966–1974) may influence the signature of fallout in South America in addition to those conducted by USA and former USSR until 1963 in the Northern hemisphere. Here, we compiled the ²⁴⁰Pu/²³⁹Pu atom ratios reported for soils of South America and conducted additional measurements to ex ...
Wilson Barros-Parada; Jan Bergmann; Tomislav Curkovic; Cristian Espinosa; Eduardo Fuentes-Contreras; Jorge Guajardo; Heidy Herrera; Sebastián Morales; Abel F. O. Queiroz; Álvaro Vidal
Leucoptera; Populus; bait traps; chemical ecology; dose response; exports; extracts; feeding behavior; gas chromatography; hexane; industry; larvae; leafminers; leaves; males; mass; mass spectrometry; moths; orchards; pupation; raw fruit; sampling; sex pheromones; testing; trees; virgin females; Chile
Abstract:
... Leucoptera sinuella is a leaf-miner moth present in several regions in the world, which has been recently introduced into Chile. The larvae feed exclusively on the leaves of poplar and willow trees, and the damage caused by the feeding behavior poses a threat to the wood-producing industry. Besides, L. sinuella larvae invade nearby orchards for pupation, causing rejections in Chilean fresh fruit f ...
Lapageria rosea; anthropogenic activities; botanical composition; climate change; conservation areas; data collection; databases; ecosystems; ecotones; epiphytes; ferns and fern allies; forest soils; forests; hosts; indicator species; introduced species; inventories; microhabitats; monuments; phytogeography; shrubs; species abundance; species richness; tree and stand measurements; trees; vascular plants; vines; Chile
Abstract:
... Plant species diversity may be seriously threatened in ecotone zones under global climate change. Therefore, keeping updated inventories of indicator species seems to be a good strategy for monitoring wild areas located in these strips. The database comes from an inventory of climbers and vascular epiphytes conducted in the Cerro Ñielol Natural Monument, a small protected area (89 hectares) locate ...