A5071509508- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Microbial Community Ecology and Physiology
- Ocean Acidification Effects and Responses
- Marine Bivalve and Aquaculture Studies
- Earthquake Detection and Analysis
- Selenium in Biological Systems
- Algal biology and biofuel production
- Geophysics and Gravity Measurements
- Arsenic contamination and mitigation
- Heavy metals in environment
- Methane Hydrates and Related Phenomena
- Parasite Biology and Host Interactions
- Microbial Fuel Cells and Bioremediation
- Moringa oleifera research and applications
- Marine and fisheries research
- Polar Research and Ecology
- Bacterial biofilms and quorum sensing
- International Relations in Latin America
- Lipid metabolism and biosynthesis
- Aquaculture Nutrition and Growth
- Parasitic Infections and Diagnostics
- Microplastics and Plastic Pollution
- Aquaculture disease management and microbiota
- Enzyme-mediated dye degradation
University of Concepción
2013-2024
University of the Americas
2021-2024
University of Messina
2024
Millennium Institute of Oceanography
2020
Abstract. Eastern boundary upwelling systems (EBUS) are among the most productive marine ecosystems on Earth. The production of organic material is fueled by nutrient-rich deep waters and high incident light at sea surface. However, biotic abiotic factors can modify surface related biogeochemical processes. Determining these important because EBUS considered hotspots climate change, reliable predictions their future functioning requires understanding mechanisms driving cycles therein. In...
Abstract. Lipid remodeling, the modification of cell membrane chemistry via structural rearrangements within lipid pool an organism, is a common physiological response amongst all domains life to alleviate environmental stress and maintain cellular homeostasis. Whereas culture experiments studies phytoplankton have demonstrated plasticity lipids in specific abiotic stressors, few analyses explored impacts multi-environmental stressors at community-level scale. Here, we study changes intact...
Lactic acid bacteria (LAB), obtained from rainbow trout (Oncorhynchus mykiss) intestine, were cultured in MRS medium and probiotic candidates. Concurrently, producers of elemental selenium nanoparticles (Se0Nps) selected. Probiotic candidates subjected to morphological characterization the following tests: antibacterial activity, antibiotic susceptibility, hemolytic catalase, hydrophobicity, viability at low pH, tolerance bile salts. Two LAB strains (S4 S14) satisfied characteristics...
Arsenic (As), a semimetal toxic for humans, is commonly associated with serious health problems. The most common form of massive and chronic exposure to As through consumption contaminated drinking water. This study aimed isolate an resistant bacterial strain characterize its ability oxidize (III) when immobilized in activated carbon batch bioreactor evaluate potential be used biological treatments remediate waters. diversity communities from sediments the As-rich Camarones River, Atacama...
Microbial degradation represents an eco-friendly alternative to traditional physicochemical treatments in removing persistent and toxic environmental pollutants, including synthetic dyes (i.e., methylene blue, MB) employed different industries. The exploitation of thermophilic bacilli, such as those isolated from the shallow hydrothermal vents Eolian Islands (Italy), could provide valuable resources for treatment warm, dye-containing wastewater. In this study, we evaluated ability preformed...
Biofilm in reverse osmosis (RO) membranes is a common problem water treatment at haemodialysis facilities. Bacteria adhere and proliferate on RO membranes, forming biofilms, obstructing damaging the allowing transfer of bacteria and/or cellular components potentially harmful to health patients. Our aim was characterize bacterial community associated biofilm identify pathogenic present systems two dialysis centres Chile. The diversity communities potable osmosed samples evaluated using...
The applications of nanoparticles (Nps) as food additives, health enhancers, and antimicrobials in animal production are increasing. aim this study was to evaluate the effect selenium (Se) (Se0Nps) stabilized with L-cysteine (Se0Nps/L-Cys), a nutritional supplement, on immunological, oxidative status, productive parameters O. mykiss. TEM SEM-EDS showed accumulation spherical Se0Nps entirely composed by elemental (Se0) intracellular extracellular deposits Pantoea agglomerans UC-32 strain....
Due to the increasing anthropogenic CO2 emissions, Ocean Acidification (OA) is progressing rapidly around world. Despite major role that microorganisms play on marine biogeochemical cycling and ecosystem functioning, response of bacterial communities upon OA scenarios still not well understood. Here, we have conducted a detailed characterization composition relative abundance in water column an open-ocean station Eastern Tropical South Pacific (ETSP) off northern Chile their interactions...
High-altitude Andean wetlands of the Atacama Desert (Chile), including Salar de Huasco salt flat, are unusual environments characterized by a great variability physical-chemical conditions, often combined with high concentration heavy metals, arsenic (As) and semimetals, such as selenium (Se). Microorganisms present in these evolved adaptative strategies to cope environmental stresses, biotechnological potentials. The work investigated natural bacterial community composition sediments...
Abstract. Lipid remodeling, the modification of cell membrane chemistry via structural rearrangements within lipid pool an organism, is a common physiological response amongst all domains life to alleviate environmental stress and maintain cellular homeostasis. Whereas culture experiments studies phytoplankton have demonstrated plasticity lipids in specific abiotic stressors, few analyses explored impacts multi-environmental stressors at community-level scale. Here, we study changes intact...
Abstract. Eastern boundary upwelling systems (EBUS) are among the most productive marine ecosystems on Earth. The high productivity in surface waters is facilitated by of nutrient-rich deep waters, with light availability enabling fast phytoplankton growth and nutrient utilization. However, there numerous biotic abiotic factors modifying biogeochemical processes. Determining these important because EBUS considered hotspots climate change, reliable predictions their future functioning...
Table S1.Dissolved iron (DFe) concentrations (nM) integrated over the water column (0 -17 2 m).Please note that DFe is always above growth limiting and therefore most 3 likely did not control productivity in by plankton community.4
Dissotichus eleginoides has a discontinuous circumpolar geographic distribution restricted to mountains and platforms, mainly in Subantarctic Antarctic waters of the southern hemisphere, including Southeast Pacific, Atlantic Indian oceans areas surrounding peninsular platforms subantarctic islands. The aim this work was determine characterize gastrointestinal parasitic microbial fauna specimens D. captured south-central zone Chile. magnitude parasitism Chile is variable, parasite richness...