Listar Artículos Científicos por autor
Mostrando publicaciones 1-5 de 5
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Benthic microbial diversity trends in response to heavy metals in an oxygen-deficient eutrophic bay of the Humboldt current system offshore the Atacama Desert
Zárate, Ana; Dorador, Cristina; Valdés, Jorge; Molina, Verónica; Icaza, Gonzalo; Pacheco, Aldo S.; Castillo-Bruna, Alexis (2021)Mejillones Bay is a coastal ecosystem situated in an oxygen-deficient upwelling area impacted by mining activities in the coastal desert region of northern Chile, where conspicuous microbial life develops in the sediments. ...
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Living (stained) calcareous benthic foraminiferal assemblages (> 125 µm) in a coastal upwelling zone of the humboldt current system, northern Chile (~ 27° S)
Castillo-Bruna, Alexis; Hromic, Tatiana; Uribe, Roberto; Valdés, Jorge; Sifeddine, Abdel; Quezada, Lyta; Vega, Sue; Arencibia-Rodríguez, Ariel; Díaz-Ochoa, Javier; Guiñez, Marcos (2021)In coastal upwelling ecosystems, understanding of environmental factors regulating the structure of benthic foraminiferal communities is fundamental to enhance our knowledge of their ecology and to validate their use in ...
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Metal(loid)s content in Concholepas concholepas (Mollusca) and human health assessment in a coastal environmental sacrifice zone, central Chile (∼32°S)
Castillo, Alexis; Valdés, Jorge; Marambio-Alfaro, Yery; Figueroa, Luis; Letelier, Jaime; Carcamo, Francisco (2023)In seafood, the study of metal(loid)s is essential to assess their toxicity and to establish risks of human exposure. This study investigates the content of As, Cd, Cu, Ni and Pb in Concholepas concholepas in a coastal ...
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Oxidative conditions along the continental shelf of the Southeast Pacific during the last two millennia: a multiproxy interpretation of the oxygen minimum zone variability from sedimentary records
Muñoz, Praxedes; Castillo-Bruna, Alexis; Valdés, Jorge; Dewitte, Boris (2023)The oxygen minimum zone (OMZ) is an essential feature along the Pacific margin, extensively studied for its influence on benthic fauna, acquiring relevance in coastal zones due to its impact on aquaculture species, ...
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Oxygen minimum zone variability during the last 700 years in a coastal upwelling area of the Humboldt system (Mejillones, 23° S, Chile). A new approach from geochemical signature
Valdés, Jorge; Sifeddine, Abdel; Guiñez, Marcos; Castillo-Bruna, Alexis (2021)Mejillones bay presents a permanent and shallow OMZ, whose upper boundary fluctuates between 30 m and 60 m water depth during a normal year. Under this condition, the bottom sediments preserve a geochemical signature of ...