Results 61 to 70 of about 16,981 (211)

Atacama Field Campaign: laboratory and in-situ measurements for remote sensing applications

International Journal of Digital Earth, 2019
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
Cristian Mattar, Andrés Santamaría-Artigas, Flavio Ponzoni, Cibele T. Pinto, Carolina Barrientos, Glynn Hulley   +5 more
doaj   +1 more source

Microbial Hotspots in Lithic Microhabitats Inferred from DNA Fractionation and Metagenomics in the Atacama Desert

Microorganisms, 2021
The existence of microbial activity hotspots in temperate regions of Earth is driven by soil heterogeneities, especially the temporal and spatial availability of nutrients.
Dirk Schulze-Makuch, Daniel Lipus, Felix L. Arens, Mickael Baqué, Till L. V. Bornemann, Jean-Pierre de Vera, Markus Flury, Jan Frösler, Jacob Heinz, Yunha Hwang, Samuel P. Kounaves, Kai Mangelsdorf, Rainer U. Meckenstock, Mark Pannekens, Alexander J. Probst, Johan S. Sáenz, Janosch Schirmack, Michael Schloter, Philippe Schmitt-Kopplin, Beate Schneider, Jenny Uhl, Gisle Vestergaard, Bernardita Valenzuela, Pedro Zamorano, Dirk Wagner   +24 more
doaj   +1 more source

Digitising biological collections to advance National Species Inventories: A case study from the flora of Chile

PLANTS, PEOPLE, PLANET, EarlyView.
In response to Chile's public policy to establish a national biodiversity inventory and monitoring system, we launched the HerbarioDigital.cl portal. We have digitised over 120,000 specimens representing more than 3,900 species from two Chilean herbaria, integrating them through a curated local taxonomic index.
Ricardo A. Segovia, Juan M. Sáez, Francisco A. Squeo, Alicia E. Marticorena, Julián Caro, Pablo C. Guerrero   +5 more
wiley   +1 more source

ENSAMBLES DE AVES EN EL DESIERTO DE ATACAMA, NORTE GRANDE DE CHILE AVIAN ASSEMBLAGES OF ATACAMA DESERT, FAR NORTH OF CHILE

Gayana, 2009
Se evaluó la riqueza y composición de especies de aves en el desierto de Atacama, Norte Grande de Chile, entre 1996 y 1998. Mediante transectos lineales se estimó la riqueza de especies de aves en 9 localidades del desierto de Atacama agrupadas en cuatro
Alberto Gantz, Jaime Rau, Enrique Couve
doaj  

57Fe Mössbauer spectroscopy studies of chondritic meteorites from the Atacama Desert, Chile: Implications for weathering processes [PDF]

, 2016
Some terrestrial areas have climatic and geomorphologic features that favor the preservation, and therefore, accumulation of meteorites. The Atacama Desert in Chile is among the most important of such areas, known as dense collection areas.
Gattacceca, Jerome, Munayco, J., Munayco, P., Rochette, P., Scorzelli, R. B., Valenzuela, M.   +5 more
core   +1 more source

Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates

Integrative Zoology, EarlyView.
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in aridity due to the Andean rain shadow and highlights the role of (semi)permanent water bodies in sustaining diverse herbivore communities. Additionally, it
Dánae Sanz‐Pérez, Santiago Hernández Del Pino, Esperanza Cerdeño, Manuel Hernández Fernández, Laura Domingo   +4 more
wiley   +1 more source

VEGETATIVE GROWTH AND EARLY PRODUCTION OF SIX OLIVE CULTIVARS, IN SOUTHERN ATACAMA DESERT, CHILE [PDF]

Journal of Central European Agriculture, 2007
Tree survival, early fruit production, vegetative growth and alternate bearing were examined in six different olive cultivars (Barnea, Biancolilla, Coratina, Empeltre, Koroneiki and Leccino) under intensive agronomic conditions i southern Atacama Desert,
Freddy MORA, Francisco TAPIA, Carlos Alberto, Elias Nunes   +3 more
doaj  

Thirty Meter Telescope Site Testing I: Overview [PDF]

, 2009
As part of the conceptual and preliminary design processes of the Thirty Meter Telescope (TMT), the TMT site testing team has spent the last five years measuring the atmospheric properties of five candidate mountains in North and South America with an ...
Blum, R., Bustos, E., Chanan, G., Djorgovski, S. G., Els, S., Gillett, P., Gregory, B., Nelson, J., Otarola, A., Riddle, R., Schoeck, M., Seguel, J., Skidmore, W., Travouillon, T., Vasquez, J., Walker, A., Walker, D., Wang, L.   +17 more
core   +2 more sources

The effect of terrestrial weathering on the mineralogy and petrologic (sub)types of CM chondrites explored by kinetic modeling and laboratory experiments

Meteoritics &Planetary Science, EarlyView.
Abstract Terrestrial weathering alters the chemical and isotopic composition, and mineralogy, of meteorites; its effects on ordinary chondrites are well‐studied, but relatively little is known about the susceptibility of carbonaceous chondrites. We combined laboratory experiments, whereby Chwichiya 002 (C3‐ung find), Murchison (CM2 fall) and Kolang ...
Robin L. Haller, Martin R. Lee, Mark E. Hodson   +2 more
wiley   +1 more source

11-Hydroxy-7-Methoxy-2,8-Dimethyltetracene-5,12-Dione

Molbank
Microorganisms are a valuable source of pharmaceutically active chemicals, serving as scaffolds for synthesis as well as lead structures. Investigating novel biomes frequently yields intriguing chemistry; the Atacama Desert in Chile is one such example ...
Rishi Vachaspathy Astakala, Gagan Preet, Ahlam Haj Hasan, Ria Desai, Juan A. Asenjo, Barbara Andrews, William T. A. Harrison, Rainer Ebel, Marcel Jaspars   +8 more
doaj   +1 more source