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Osvaldo Iván Ulloa Quijada

Profesor Titular

UNIVERSIDAD DE CONCEPCIÓN

Concepción, Chile

Oceanografía Microbiana; Bio-óptica Marina; Ciclos Biogeoquimicos Marinos

Ph.D., Dalhousie University. Canada, 1993
M.Sc., Dalhousie University. Chile, 1997
Biólogo Marino, Universidad de Concepción. Chile, 1983


Biogeographic Insights Into the Late Miocene Diversification of the Giant Deep-Ocean Amphipod Eurythenes Gonzalez, Carolina E.; Weston, Johanna N.J.; Rivera, Reinaldo; OLIVA-MORENO, MARCELO ENRIQUE; Escribano, Ruben; ULLOA-QUIJADA, OSVALDO IVAN Article ISI SCOPUS (2025)
A new large predator (Amphipoda, Eusiridae) hidden at hadal depths of the Atacama Trench Weston, Johanna N. J.; Gonzalez, Carolina E.; Escribano, Ruben; ULLOA-QUIJADA, OSVALDO IVAN Article ISI SCOPUS (2024)
A compendium of bacterial and archaeal single-cell amplified genomes from oxygen deficient marine waters Anstett, Julia; Plominsky, Alvaro M.; DeLong, Edward F.; Kiesser, Alyse; Juergens, Klaus; Morgan-Lang, Connor; Stepanauskas, Ramunas; Stewart, Frank J.; Ulloa, Osvaldo; Woyke, Tanja; et al. Article ISI SCIENTIFIC DATA (2023)
Do phytoplankton require oxygen to survive? A hypothesis and model synthesis from oxygen minimum zones Wong, Jane C. Y.; Raven, John A.; Aldunate, Montserrat; Silva, Sebastian; Gaitan-Espitia, Juan Diego; Vargas, Cristian A.; Ulloa, Osvaldo; von Dassow, Peter Article ISI LIMNOLOGY AND OCEANOGRAPHY (2023)
Ecophysiological basis of spatiotemporal patterns in picophytoplankton pigments in the global ocean Phongphattarawat, Sornsiri; Bouman, Heather A. A.; Lomas, Michael W. W.; Sathyendranath, Shubha; Tarran, Glen A. A.; Ulloa, Osvaldo; Zubkov, Mikhail V. V. Article ISI FRONTIERS IN MARINE SCIENCE (2023)
Bacterial and eukaryotic intact polar lipids point to in situ production as a key source of labile organic matter in hadal surface sediment of the Atacama Trench Ruiz-Fernandez, Paula; Ulloa, Osvaldo; Sepulveda, Julio Article ISI BIOGEOSCIENCES (2022)
Carbon Assimilation by the Picoplanktonic Community Inhabiting the Secondary Chlorophyll Maximum of the Anoxic Marine Zones of the Eastern Tropical North and South Pacific Ulloa, Osvaldo Article ISI FRONTIERS IN MARINE SCIENCE (2022)
Metaomics unveils the contribution of <i>Alteromonas</i> bacteria to carbon cycling in marine oxygen minimum zones Henríquez-Castillo, Carlos; Plominsky, Alvaro M.; Ramirez-Flandes, Salvador; Bertagnolli, Anthony D.; Stewart, Frank J.; Ulloa, Osvaldo Article ISI FRONTIERS IN MARINE SCIENCE (2022)
Eurythenes atacamensis sp. nov. (Crustacea: Amphipoda) exhibits ontogenetic vertical stratification across abyssal and hadal depths in the Atacama Trench, eastern South Pacific Ocean Weston, Johanna N. J.; Wainwright, Jennifer A.; Stewart, Eva C. D.; Linley, Thomas D.; Reid, William D. K.; Hidalgo, Pamela; Ulloa, Osvaldo; Wenzhofer, Frank; Glud, Ronnie N.; Jamieson, Alan J. Article ISI MARINE BIODIVERSITY (2021)
Flow cytometry with cell sorting and sequencing as a tool for the study of the stomach microbiota of the Humboldt Current krill (Euphausiacea) Murillo, Alejandro A.; Ulloa, Osvaldo Article ISI JOURNAL OF CRUSTACEAN BIOLOGY (2021)
Genome-resolved viral ecology in a marine oxygen minimum zone Vik, Dean; Gazitua, Maria Consuelo; Sun, Christine L.; Zayed, Ahmed A.; Aldunate, Montserrat; Mulholland, Margaret R.; Ulloa, Osvaldo; Sullivan, Matthew B. Article ISI ENVIRONMENTAL MICROBIOLOGY (2021)
Plankton respiration in the Atacama Trench region: Implications for particulate organic carbon flux into the hadal realm Fernandez-Urruzola, Igor; Ulloa, Osvaldo; Glud, Ronnie N.; Pinkerton, Matthew H.; Schneider, Wolfgang; Wenzhofer, Frank; Escribano, Ruben Article ISI LIMNOLOGY AND OCEANOGRAPHY (2021)
Potential virus-mediated nitrogen cycling in oxygen-depleted oceanic waters Gazitua, M. Consuelo; Vik, Dean R.; Roux, Simon; Gregory, Ann C.; Bolduc, Benjamin; Widner, Brittany; Ulloa, Osvaldo Article ISI ISME JOURNAL (2021)
The cyanobacterium Prochlorococcus has divergent light-harvesting antennae and may have evolved in a low-oxygen ocean Ulloa, Osvaldo; Murillo, Alejandro A.; Morgan-Lang, Connor Article ISI PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)
Autotrophic carbon fixation pathways along the redox gradient in oxygen-depleted oceanic waters Ruiz-FernÃ¡ndez P.; RamÃrez-Flandes S.; RodrÃguez-LeÃ³n E. Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY REPORTS (2020)
Distinct oxygen environments shape picoeukaryote assemblages thriving oxygen minimum zone waters off central Chile De La Iglesia, Rodrigo; Pablo Espinoza, Juan; Ulloa, Osvaldo Article ISI JOURNAL OF PLANKTON RESEARCH (2020)
Genetic diversity and novel lineages in the cosmopolitan copepod Pleuromamma abdominalis in the Southeast Pacific Goetze E. Article SCOPUS SCIENTIFIC REPORTS (2020)
Nitrogen assimilation in picocyanobacteria inhabiting the oxygen-deficient waters of the eastern tropical North and South Pacific Ji Q.; Lueders-Dumont J.; Mulholland M.R. Article ISI SCOPUS LIMNOLOGY AND OCEANOGRAPHY (2020)
Spatiotemporal Distribution of Key Pelagic Microbes in a Seasonal Oxygen-Deficient Coastal Upwelling System of the Eastern South Pacific Ocean Molina, Veronica; Belmar, Lucy; Ulloa, Osvaldo Article ISI FRONTIERS IN MARINE SCIENCE (2020)
The Influence of pCO(2)-Driven Ocean Acidification on Open Ocean Bacterial Communities during A Short-Term Microcosm Experiment in the Eastern Tropical South Pacific (ETSP) off Northern Chile Henriquez, Carlos; Olivares, Francisca; Iglesia, Rodrigo De Ia; Ulloa, Osvaldo Article ISI MICROORGANIMS (2020)
Redox traits characterize the organization of global microbial communities Article ISI SCOPUS PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2019)
Sampling and Processing Methods Impact Microbial Community Structure and Potential Activity in a Seasonally Anoxic Fjord: Saanich Inlet, British Columbia Torres-Beltran, M; Scofield, M; Taylor, C; Tyshchenko, K; Michiels, C; Lam, P; Jurgens, K; Hyun, JH Article ISI SCOPUS FRONTIERS IN MARINE SCIENCE (2019)
Decrypting the sulfur cycle in oceanic oxygen minimum zones. Crowe, Sean A; Cox, Raymond P; Jones, CarriAyne; Fowle, David A; Santibañez-Bustos, J F; Ulloa, O; Canfield, Donald E Article The ISME journal (2018)
Distinctive Archaeal Composition of an Artisanal Crystallizer Pond and Functional Insights Into Salt-Saturated Hypersaline Environment Adaptation van den Engh, Ger; Hanselmann, Kurt; Ulloa, Osvaldo; De La Iglesia, Rodrigo; Trefault, Nicole Article ISI SCOPUS FRONTIERS IN MICROBIOLOGY (2018)
Metabolic potential and in situ transcriptomic profiles of previously uncharacterized key microbial groups involved in coupled carbon, nitrogen and sulfur cycling in anoxic marine zones Trefault, Nicole; Podell, Sheila; Blanton, Jessica M.; De La Iglesia, Rodrigo; Ulloa, Osvaldo Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY (2018)
Single cell genomic and transcriptomic evidence for the use of alternative nitrogen substrates by anammox bacteria. Ganesh, Sangita; Bertagnolli, Anthony D; Bristow, Laura A; Padilla, Cory C; Blackwood, Nigel; Aldunate, Montserrat; Bourbonnais, Annie; Altabet, Mark A; Malmstrom, Rex R; Woyke, Tanja; Ulloa, Osvaldo; Konstantinidis, Konstantinos T; Thamdrup, Bo; Stewart, Frank J Article The ISME journal (2018)
A review of protist grazing below the photic zone emphasizing studies of oxygen-depleted water columns and recent applications of in situ approaches Medina, Luis E.; Taylor, Craig D.; Pachiadaki, Maria G.; Henríquez, Carlos; Ulloa, Osvaldo; Edgcomb, Virginia P. Article Frontiers in Marine Science (2017)
Cryptic oxygen cycling in anoxic marine zones. Garcia-Robledo, Emilio; Padilla, Cory C; Aldunate, Montserrat; Stewart, Frank J; Ulloa, Osvaldo; Paulmier, Aurélien; Gregori, Gerald; Revsbech, Niels Peter Article Proceedings of the National Academy of Sciences of the United States of America (2017)
Diversity and transcriptional levels of RuBisCO form II of sulfur-oxidizing γ-proteobacteria in coastal-upwelling waters with seasonal anoxia Léniz, Bárbara.; Murillo, Alejandro A.; Ramírez-Flandes, Salvador; , Ulloa Article Frontiers in Marine Science (2017)
Hydrography shapes amoA containing Thaumarcheota in the coastal waters off central Chile. Bertagnolli, Anthony D; Ulloa, Osvaldo Article Environmental microbiology reports (2017)
Ammonium and nitrite oxidation at nanomolar oxygen concentrations in oxygen minimum zone waters. Bristow, Laura A; Dalsgaard, Tage; Tiano, Laura; Mills, Daniel B; Bertagnolli, Anthony D; Wright, Jody J; Hallam, Steven J; Ulloa, Osvaldo; Canfield, Donald E; Revsbech, Niels Peter; Thamdrup, Bo Article Proceedings of the National Academy of Sciences of the United States of America (2016)
Vertical modeling of the nitrogen cycle in the eastern tropical South Pacific oxygen deficient zone using high-resolution concentration and isotope measurements Peters, BD; Babbin, AR; Lettmann, KA; Mordy, CW; Ulloa, O; Ward, BB; Casciotti, KL Article Global Biogeochemical Cycles (2016)
Genomic potential for nitrogen assimilation in uncultivated members of Prochlorococcus from an anoxic marine zone Astorga-Elo, M; Ramirez-Flandes, S; Delong EF; ULLOA, O Article ISI SCOPUS ISME Journal (2015)
Structure of denitrifying communities reducing N2O at suboxic waters off northern Chile and Perú Castro-Gonzalez, M; ULLOA, O; Farías L. Article ISI SCIELO REVISTA DE BIOLOGIA MARINA Y OCEANOGRAFIA (2015)
Enhanced metabolic versatility of planktonic sulfur-oxidizing Î³-proteobacteria in an oxygen-deficient coastal ecosystem Murillo, Alejandro A.; RamÃrez-Flandes, Salvador; DeLong, Edward F.; Ulloa, Osvaldo Article SCOPUS Frontiers in Marine Science (2014)
Oxygen at Nanomolar Levels Reversibly Suppresses Process Rates and Gene Expression in Anammox and Denitrification in the Oxygen Minimum Zone off Northern Chile Dalsgaard T.; Stewart FJ; THAMDRUP, B; De Brabandere L; Revsbech NP; ULLOA, O; CANFIELD, DE; Delong EF Article ISI SCOPUS MBIO (2014)
Oxygen distribution and aerobic respiration in the north and south eastern tropical Pacific oxygen minimum zones Tiano, L; Garcia-Robledo, E; Dalsgaard T.; Devol, AH; Ward, BB; ULLOA, O; CANFIELD, DE; Revsbech NP Article ISI SCOPUS DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS (2014)
The first report of a microdiverse anammox bacteria community in waters of Colombian Pacific, a transition area between prominent oxygen minimum zones of the eastern tropical Pacific Castro-Gonzalez, M; Molina, V.; Rodriguez-Rubio E.; ULLOA, O Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY REPORTS (2014)
Vertical partitioning of nitrogen-loss processes across the oxic-anoxic interface of an oceanic oxygen minimum zone De Brabandere L; Canfield, D. E.; Dalsgaard T.; ULLOA, O; THAMDRUP, B Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY (2014)
Experimental Incubations Elicit Profound Changes in Community Transcription in OMZ Bacterioplankton Dalsgaard T.; THAMDRUP, B; ULLOA, O; Canfield, D. E.; Delong, E. F. Article ISI SCOPUS PLOS ONE (2012)
Metagenomes of the Picoalga Bathycoccus from the Chile Coastal Upwelling VAULOT, D; Lepère C.; Toulza E.; De La Iglesia R.; Poulain J.; Gaboyer F.; Moreau H.; Vandepoele K.; ULLOA, O; Gavory F.; et al. Article ISI SCOPUS PLOS ONE (2012)
Microbial metatranscriptomics in a permanent marine oxygen minimum zone ULLOA, O; Delong, E. F. Article ISI SCOPUS Environmental Microbiology (2012)
Microbial oceanography of anoxic oxygen minimum zones ULLOA, O; Canfield, D. E.; Delong, E. F. Article ISI SCOPUS Proceedings of the National Academy of Sciences of the United States of America (2012)
Picophytoplankton biomass distribution in the global ocean Buitenhuis, ET; LI, WKW; VAULOT, D; Lomas, MW; Landry, MR; PARTENSKY, F; Karl, DM; ULLOA, O; Campbell, L; Jacquet, S; et al. Article ISI EARTH SYSTEM SCIENCE DATA (2012)
Abundance and phylogenetic identity of archaeoplankton in the permanent oxygen minimum zone of the eastern tropical South Pacific Belmar, L; Molina, V.; ULLOA, O Article ISI SCOPUS FEMS Microbiology Ecology (2011)
Moored Profiler for High-Frequency Monitoring of Oceanic Microstructures SAMY Profiler Takes Nanoscale Measurements Along The Chilean Coast to Characterize the Water Column Villagrán V.; Hormazábal, C; ULLOA, O Article ISI Sea Technology (2011)
Nitrogen Fixation in Denitrified Marine Waters Fernández, C.; Farías L.; ULLOA, O Article ISI SCOPUS PLOS ONE (2011)
Structure and seasonal dynamics of the eukaryotic picophytoplankton community in a wind-driven coastal upwelling ecosystem Collado-Fabbri, S; VAULOT, D; ULLOA, O Article ISI SCOPUS Limnology and Oceanography (2011)
Water-column stratification governs the community structure of subtropical marine picophytoplankton Bouman HA; ULLOA, O; Barlow R; LI, WKW; PLATT, T; Zwirglmaier K; Scanlan DJ; SATHYENDRANATH, S Article ISI SCOPUS Environmental Microbiology Reports (2011)
A Cryptic Sulfur Cycle in Oxygen-Minimum-Zone Waters off the Chilean Coast CANFIELD, DE; Stewart FJ; THAMDRUP, B; De Brabandere L; Dalsgaard T.; Delong EF; Revsbech NP; ULLOA, O Article ISI SCOPUS Science (2010)
High diversity of ammonia-oxidizing archaea in permanent and seasonal oxygen-deficient waters of the eastern South Pacific Molina, V.; Belmar, L; ULLOA, O Article ISI SCOPUS Environmental Microbiology (2010)
Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development Zhang J.; Gilbert, D.; Gooday, AJ; Levin L.; Naqvi SWA; Middelburg JJ; Scranton M; Ekau W; Peña A; Dewitte, B.; et al. Article ISI SCOPUS Biogeosciences (2010)
Novel lineages of Prochlorococcus thrive within the oxygen minimum zone of the eastern tropical South Pacific Lavín P.; Gonza?lez, B; Santibanez, JF; Scanlan DJ; ULLOA, O Article ISI SCOPUS Environmental Microbiology Reports (2010)
Anammox bacteria and the anaerobic oxidation of ammonium in the oxygen minimum zone off northern Chile Galan, A; Molina, V.; THAMDRUP, B; Woebken, D; Lavik G; Kuypers, MMM; ULLOA, O Article ISI SCOPUS DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2009)
Autonomous observations of in vivo fluorescence and particle backscattering in an oceanic oxygen minimum zone Whitmire AL; Letelier RM; Villagrán V.; ULLOA, O Article ISI SCOPUS OPTICS EXPRESS (2009)
Controls on sedimentary nitrogen isotopes along the Chile margin De Pol Holz, R.; Robinson RS; Hebbeln D.; Sigman DM; ULLOA, O Article ISI SCOPUS DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2009)
Determination of ultra-low oxygen concentrations in oxygen minimum zones by the STOX sensor Revsbech NP; Larsen LH; Gundersen J; Dalsgaard T.; ULLOA, O; THAMDRUP, B Article ISI SCOPUS LIMNOLOGY AND OCEANOGRAPHY-METHODS (2009)
The oxygen minimum zone of the eastern South Pacific ULLOA, O; Pantoja S. Article ISI SCOPUS DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2009)
Bacterial diversity in the oxygen minimum zone of the eastern tropical South Pacific Stevens, H; ULLOA, O Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY (2008)
Bosque: integrated phylogenetic analysis software Ramirez-Flandes, S; ULLOA, O Article ISI SCOPUS BIOINFORMATICS (2008)
Diversity of the marine picocyanobacteria Prochlorococcus and Synechococcus assessed by terminal restriction fragment length polymorphisms of 16S-23S rRNA internal transcribed spacer sequences Lavín P.; Gomez, P.; Gonza?lez, B; ULLOA, O Article ISI SCIELO SCOPUS REVISTA CHILENA DE HISTORIA NATURAL (2008)
Global phylogeography of marine Synechococcus and Prochlorococcus reveals a distinct partitioning of lineages among oceanic biomes Zwirglmaier K; Jardillier, L; Ostrowski, M; Mazard, S.; Garczarek, L.; VAULOT, D; Not F.; Massana R; ULLOA, O; Scanlan DJ Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY (2008)
Heterotrophic bacterial production in the eastern South Pacific: longitudinal trends and coupling with primary production Van Wambeke F; Obernosterer I.; Moutin T; Duhamel S; ULLOA, O; Claustre H. Article ISI SCOPUS BIOGEOSCIENCES (2008)
Ammonia-oxidizing beta-Proteobacteria from the oxygen minimum zone off northern Chile Molina, V.; ULLOA, O; Farías L.; Urrutia, H; Ramirez, S.; Junier, P; Witzel, KP Article ISI SCOPUS APPLIED AND ENVIRONMENTAL MICROBIOLOGY (2007)
Contribution of picoplankton to the total particulate organic carbon concentration in the eastern South Pacific Grob C.; ULLOA, O; Claustre H.; Huot, Y; Alarcón G.; Marie, D Article ISI SCOPUS BIOGEOSCIENCES (2007)
High abundances of aerobic anoxygenic photosynthetic bacteria in the South Pacific Ocean Lami, R; Cottrell, MT; Ras J.; ULLOA, O; Obernosterer I.; Claustre H.; Kirchman, DL; Lebaron, P Article ISI SCOPUS APPLIED AND ENVIRONMENTAL MICROBIOLOGY (2007)
Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean De Pol Holz, R.; ULLOA, O; Lamy, F; Dezileau L.; Sabatier, P; Hebbeln D. Article ISI SCOPUS PALEOCEANOGRAPHY (2007)
Picoplankton abundance and biomass across the eastern South Pacific Ocean along latitude 32.5 degrees S Grob C.; ULLOA, O; LI, WKW; Alarcón G.; Fukasawa, M; Watanabe S. Article ISI SCOPUS MARINE ECOLOGY PROGRESS SERIES (2007)
A two-component model of phytoplankton absorption in the open ocean: Theory and applications Devred, E; SATHYENDRANATH, S; Stuart, V; Maass, H; ULLOA, O; PLATT, T Article ISI SCOPUS JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (2006)
Anaerobic ammonium oxidation in the oxygen-deficient waters off northern Chile THAMDRUP, B; Dalsgaard T.; Jensen, MM; ULLOA, O; Farías L.; Escribano R. Article ISI SCOPUS LIMNOLOGY AND OCEANOGRAPHY (2006)
Melting of the Patagonian Ice Sheet and deglacial perturbations of the nitrogen cycle in the eastern South Pacific De Pol Holz, R.; ULLOA, O; Dezileau L.; Kaiser J.; Lamy, F; Hebbeln D. Article ISI SCOPUS GEOPHYSICAL RESEARCH LETTERS (2006)
Oceanographic basis of the global surface distribution of Prochlorococcus ecotypes Bouman HA; ULLOA, O; Scanlan DJ; Zwirglmaier K; LI, WKW; PLATT, T; Stuart, V; Barlow R; Leth O.; Clementson, L; et al. Article ISI SCOPUS SCIENCE (2006)
Communities of nirS-type denitrifiers in the water column of the oxygen minimum zone in the eastern South Pacific Castro-Gonzalez, M; Braker, G; Farías L.; ULLOA, O Article ISI SCOPUS ENVIRONMENTAL MICROBIOLOGY (2005)
On the annual cycle of coastal and open ocean satellite chlorophyll off Chile (18 degrees-40 degrees S) Yuras G.; ULLOA, O; Hormazabal, S. Article ISI SCOPUS GEOPHYSICAL RESEARCH LETTERS (2005)
Remote sensing of ocean colour: Towards algorithms for retrieval of pigment composition SATHYENDRANATH, S; Stuart, V; PLATT, T; Bouman, H; ULLOA, O; Maass, H Article ISI SCOPUS Indian Journal of Marine Sciences (2005)
Bio-optical characteristics of phytoplankton populations in the upwelling system off the coast of Chile Stuart, V; ULLOA, O; Alarcón G.; SATHYENDRANATH, S; Major, H; Head, EJH; PLATT, T Article ISI SCIELO SCOPUS REVISTA CHILENA DE HISTORIA NATURAL (2004)
Biological and chemical consequences of the 1997-1998 El Nino in the Chilean coastal upwelling system: a synthesis Escribano R.; Daneri G.; Farías L.; González, HE; Gutiérrez, D; Lange, CB; Pizarro, O.; ULLOA, O; Braun, M Article ISI DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2004)
Hydrography of the eastern South Pacific Ocean: results from the Sonne 102 cruise, May-June 1995 Leth O.; Shaffer, G; ULLOA, O Article ISI DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2004)
Iron control of past productivity in the coastal upwelling system off the Atacama Desert, Chile Dezileau L.; ULLOA, O; Hebbeln D.; Lamy, F; Reyss, JL; Fontugne M. Article ISI SCOPUS PALEOCEANOGRAPHY (2004)
ON THE ANNUAL CYCLE OF SATELLITE CHLOROPHYLL OFF CHILE (18°-40°S) Yuras, Gabriel; Ulloa, Osvaldo; Letelier, Ricardo; Pizarro, Oscar Article SCIELO Gayana (Concepciï¿½n) - International Journal of Biodiversity, Oceanology and Conservation (2004)
Temporal variability of nitrogen cycling in continental-shelf sediments of the upwelling ecosystem off central Chile Farías L.; Graco M; ULLOA, O Article ISI DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY (2004)
Center for oceanographic research opens in Chile Lange C. B.; ULLOA, O Article Eos (2003)
Nitrate supply and demand in the mixed layer of the ocean PLATT, T; SATHYENDRANATH, S; Broomhead, DS; ULLOA, O Article ISI SCOPUS MARINE ECOLOGY PROGRESS SERIES (2003)
Temperature as indicator of optical properties and community structure of marine phytoplankton: implications for remote sensing Bouman HA; PLATT, T; SATHYENDRANATH, S; LI, WKW; Stuart, V; Fuentes-Yaco, C; Maass, H; HORNE, EPW; ULLOA, O; Lutz V.; et al. Article ISI SCOPUS MARINE ECOLOGY PROGRESS SERIES (2003)
Evolution and biological effects of the 1997-98 El Nino in the upwelling ecosystem off northern Chile ULLOA, O; Escribano R.; Hormazabal, S.; Ramos, M. Article ISI SCOPUS GEOPHYSICAL RESEARCH LETTERS (2001)
Local and remote forcing of sea surface temperature in the coastal upwelling system off Chile Hormazabal, S.; Shaffer, G; Letelier, J; ULLOA, O Article ISI SCOPUS Journal of Geophysical Research (2001)
Primary production and community respiration in the Humboldt Current System off Chile and associated oceanic areas Daneri G.; Dellarossa, V; Quiñones R.; Jacob, B; Montero P.; ULLOA, O Article ISI SCOPUS MARINE ECOLOGY PROGRESS SERIES (2000)
Warming and circulation change in the eastern South Pacific Ocean Shaffer, G; Leth O.; ULLOA, O; Bendtsen, J; Daneri G.; Dellarossa, V; Hormazabal, S.; Sehlstedt, PI Article ISI GEOPHYSICAL RESEARCH LETTERS (2000)
Fractionation during remineralization of organic matter in the ocean Shaffer, G; Bendtsen, J; ULLOA, O Article DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS (1999)
CONCENTRATION AND TRANSPORT OF NITRATE BY THE MAT-FORMING SULFUR BACTERIUM THIOPLOCA FOSSING, H; GALLARDO, VA; JORGENSEN, BB; HUTTEL, M; NIELSEN, LP; SCHULZ, H; CANFIELD, DE; FORSTER, S; GLUD, RN; GUNDERSEN, JK; et al. Article ISI NATURE (1995)
EFFECT OF THE PARTICLE-SIZE DISTRIBUTION ON THE BACKSCATTERING RATIO IN SEAWATER ULLOA, O; SATHYENDRANATH, S; PLATT, T Article ISI APPLIED OPTICS (1994)
PHOTOACCLIMATION OF PROCHLOROCOCCUS SP (PROCHLOROPHYTA) STRAINS ISOLATED FROM THE NORTH-ATLANTIC AND THE MEDITERRANEAN-SEA PARTENSKY, F; HOEPFFNER, N; LI, WKW; ULLOA, O; VAULOT, D Article ISI PLANT PHYSIOLOGY (1993)
LIGHT-SCATTERING BY MARINE HETEROTROPHIC BACTERIA ULLOA, O; SATHYENDRANATH, S; PLATT, T; QUINONES, RA Article ISI JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS (1992)
NUTRIENT CONTROL OF PHYTOPLANKTON PHOTOSYNTHESIS IN THE WESTERN NORTH-ATLANTIC PLATT, T; SATHYENDRANATH, S; ULLOA, O; HARRISON, WG; HOEPFFNER, N; GOES, J Article ISI NATURE (1992)
ESTIMATION OF NEW PRODUCTION IN THE OCEAN BY COMPOUND REMOTE-SENSING SATHYENDRANATH, S; PLATT, T; HORNE, EPW; HARRISON, WG; ULLOA, O; OUTERBRIDGE, R; HOEPFFNER, N Article ISI NATURE (1991)
PHOTOSYNTHETIC ACTION, ABSORPTION, AND QUANTUM YIELD SPECTRA FOR A NATURAL-POPULATION OF OSCILLATORIA IN THE NORTH-ATLANTIC LEWIS, MR; ULLOA, O; PLATT, T Article ISI LIMNOLOGY AND OCEANOGRAPHY (1988)
Nitrogen Cycling in Sediments from Central Chile (36ºS): Seasonal and Interannual Variability Farias, Laura; Graco, Michelle; Molina, Veronica; Gutierrez, Dimitri; Gallardo, Victor A.; Ulloa, Osvaldo Article Rev. Investigaciones Marinas
The 1997/98 El Niño in the Humboldt Current System: a Synthesis Escribano R.; Daneri G.; Farías L.; GALLARDO, VA; GONZALEZ, H; Lange C. B.; Morales C.E.; Pantoja S.; Pizarro, O.; Quiñones R.; et al. Article Rev. Investigaciones Marinas


Pelagic oxygen minimum zone microbial communities ULLOA, O; Wright J.J.; Belmar, L; Hallam S.J. BookWhole SCOPUS The Prokaryotes: Prokaryotic Communities and Ecophysiology (2013)
Peru-Chile Current System Karstensen J.; ULLOA, O BookWhole SCOPUS From Molecules to Networks: An Introduction to Cellular and Molecular Neuroscience: Third Edition (2010)


Microbial communities and their biogeochemical role in the water column of the oxygen minimum zone in the eastern South Pacific ULLOA, O; Belmar, L; Farías L.; Castro-Gonzalez, M; Galan, A; Lavín P.; Molina, V.; Santibanez, F.; Stevens, H; Ramirez, S. ConferencePaper GAYANA (2006)
The ANTARES observation network Dogliotti A.I.; ULLOA, O; MÃ¼ller-Karger F.; Hu C.; Murch B.; Taylor, C; Yuras G.; Kampel M.; Lutz V.; Gaeta S.; et al. ConferencePaper SCOPUS PHOTONIC MATERIALS, DEVICES, AND APPLICATIONS, PTS 1 AND 2 (2005)


Monitoring Microbial Communities in the Marine Environment Editorial ISI SCOPUS CYTOMETRY PART A (2019)


Revealing zooplankton diversity in the midnight zone (vol 10, 1252535, 2023) Gonzalez, CE; Blanco-Bercial, L; Escribano R.; Fernández-Urruzola, I.; Rivera R.; ULLOA, O Errata ISI (2025)


Microbial Oceanography of the Atacama Trench Ulloa, Osvaldo Proyecto (2019)
MICROBIAL CARBON CYCLING IN ANOXIC MARINE ZONES=> NATURE AND SIGNIFICANCE OF AUTOTROPHIC PROCESSES FONDECYT (1161483) Proyecto 2016-2019 Inv. Responsable
THAUMARCHAEAL ECOPHYSIOLOGY AMID SEASONAL DE-OXYGENATION ALONG THE CENTRAL CHILEAN COAST FONDECYT (3160611) Proyecto 2015-2018 Inv. Patrocinante
Instituto Milenio de Oceanografía Iniciativa Científica Milenio (IC 120019) Proyecto 2013-2023 Director(a)
LINKING BIOGEOCHEMICAL CYCLES IN THE OXYGEN MINIMUM ZONES OF THE EASTERN PACIFIC OCEAN THROUGH SINGLE-CELL GENOMICS OF KEY MICROORGANISMS FONDECYT (3140191) Proyecto 2013-2016 Inv. Patrocinante
Microbial Oceanography of picocyanobacteria in the oxygen minimum zones of the eastern Pacific Ocean FONDECYT (1130784) Proyecto 2013-2016 Inv. Principal
Microbial Initiative in Low Oxygen areas off Concepción and Oregon Gordon and Betty Moore Foundation, USA Proyecto 2009-2011 Coinvestigador(a)
Microbial oceanography of the oxygen-deficient waters of the eastern tropical South Pacific The Agouron Institute, USA Proyecto 2007-2010 Inv. Responsable
Picophytoplankton functional diversity and impact on the bacterial community in the hyper-oligotrophic South Pacific Ocean ANR, France Proyecto 2007-2009 Coinvestigador(a)
ECOLOGÍA MOLECULAR Y GENÓMICA DE SISTEMAS MICROBIANOS NATURALES I CONCURSO DE REDES DE COLABORACIÓN PARA ANILLOS DE INVESTIGACIÓN Y NÚCLEOS CIENTIFICOS MILENIO 2006 (RED12) Proyecto 2006-2008 Investigador(a)
CENTRO DE INVESTIGACIÓN OCEANOGRÁFICO EN EL PACÍFICO SUR-ORIENTAL (COPAS) FONDAP (15010007) Proyecto 2001-2012 Inv. Responsable
THE ROLE OF COASTAL UPWELLING ECOSYSTEM AND THE CONTINENTAL SHELF OFF CONCEPCION BAY, CENTRAL CHILE, IN THE ESTABLISHMENT OF THE MEGABENTHOS UNDER THE INFLUENCE OF THE PERU-CHILE UNDERCURRENT. FONDECYT (1940998) Proyecto 1994-1996 Coinvestigador(a)


Monitoring low-oxygen-adapted subsurface phytoplankton distribution in a changing ocean Cox, I; Brewin, RJW; Sheen, K; Dall'Olmo, G; ULLOA, O Review ISI (2024)
Marine pelagic ecosystems ULLOA, O; Grob C. Review SCOPUS Surface Ocean-Lower Atmosphere Processes (2013)
Processes and patterns of oceanic nutrient limitation Moore CM; Mills, MM; Arrigo, KR; Berman-Frank, I; Bopp, L.; Boyd, PW; Galbraith, ED; Geider RJ; Guieu C; Jaccard, SL; et al. Review ISI SCOPUS Nature Geoscience (2013)
Oxygen minimum zones harbour novel viral communities with low diversity Cassman N.; Prieto-Davo A.; Walsh K.; Silva G.G.Z.; Angly F.; Akhter, S.; Barott K.; Busch J.; McDole T.; Haggerty J.M.; et al. Review ISI SCOPUS Environmental Microbiology (2012)
Temporal variability and phylogenetic characterization of planktonic anammox bacteria in the coastal upwelling ecosystem off central Chile Galan, A; Molina, V.; Belmar, L; ULLOA, O Review ISI SCOPUS PROGRESS IN OCEANOGRAPHY (2012)
Air-sea carbon dioxide fluxes in the coastal southeastern tropical Pacific Friederich GE; Ledesma J.; ULLOA, O Review ISI SCOPUS PROGRESS IN OCEANOGRAPHY (2008)
Impacts of atmospheric anthropogenic nitrogen on the open ocean Duce RA; LaRoche J; Altieri K; Arrigo, KR; Baker AR; Capone DG; Cornell, S.; Dentener F.; Galloway J; Ganeshram RS; et al. Review ISI SCIENCE (2008)

Patricia Gómez

Humberto González

Professor

Institute of Marine and Limnological Sciences

UNIVERSIDAD AUSTRAL DE CHILE

Valdivia, Chile

HERACLIO ESCRIBANO

Profesor Titular

Oceanografía

UNIVERSIDAD DE CONCEPCION

CONCEPCION, Chile

Homero Urrutia

Profesor titular

Facultad de Ciencias Biológicas

UNIVERSIDAD DE CONCEPCIÓN

Concepción, Chile

Renato Quiñones

Profesor titular

Departamento de Oceanografía

UNIVERSIDAD DE CONCEPCION

Concepcion, Chile

Laura Farias

Profesor Titular

UNIVERSIDAD DE CONCEPCION

Concepcion, Chile

Oscar Pizarro

Profesor titular

Departamento de Geofísica

DEPARTAMENTO DE GEOFÍSICA, UNIVERSIDAD DE CONCEPCIÓN

Concepcion, Chile

Wolfgang Schneider

Profesor Titular

Oceanografia

UNIVERSIDAD DE CONCEPCIÓN

Concepción, Chile

Victor Campos

Associate Professor

Microbiology

UNIVERSIDAD DE CONCEPCIÓN

Concepción, Chile

camila fernandez

Adjoint profesor

Oceanography

UNIVERSIDAD DE CONCEPCION (CHILE)/OBSERVATOIRE OCÉANOLOGIQUE DE BANYULS SUR MER (FRANCE)

Concepcion, Chile

Rodrigo De la Iglesia

Profesor Asociado

Genética Molecular y Microbiología

PONTIFICIA UNIVERSIDAD CATÓLICA DE CHILE

Santiago, Chile

Bernardo González

Full Professor

UNIVERSIDAD ADOLFO IBAÑEZ

Santiago, Chile

Jaime Letelier

jefatura

Oceanografía y Medio Ambiente

Instituto de Fomento Pesquero

Valparaíso, Chile

Peter von Dassow

Profesor Associado

Ecología

PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE

Santiago, Chile

Alejandro Murillo

Profesor Asistente

Universidad de Atacama

Copiapó, Chile

144

Osvaldo Ulloa

Profesor Titular

Oceanografía

UNIVERSIDAD DE CONCEPCIÓN

Concepción, Chile

Carina Lange

Profesor Titular

Oceanografia

UNIVERSIDAD DE CONCEPCIÓN

Concepcion, Chile

Ramiro Riquelme

Profesor Asistente

Zoologia

UNIVERSIDAD DE CONCEPCION

Concepcion, Chile

Nicole Trefault

Profesora Titular

Centro GEMA, Genomica, Ecologia y Medio Ambiente

UNIVERSIDAD MAYOR

Santiago, Chile

Samuel Hormazabal

Profesor Adjunto

Escuela de Ciencias del Mar

PONTIFICIA UNIVERSIDAD CATOLICA DE VALPARAISO

Valparaiso, Chile

Giovanni Daneri

Executive Director

CENTRO DE INVESTIGACIÓN EN ECOSISTEMAS DE LA PATAGONIA

Coyhaique, Chile

Paulina Montero

Investigador

CENTRO DE INVESTIGACIÓN EN ECOSISTEMAS DE LA PATAGONIA

Coyhaique, Chile

Paris Lavín

Profesor asistente

Biotecnologia

Universidad de Antofagasta

Antofagasta, Chile

Marcelo Oliva

Profesor Titular

Instituto Cs. Naturales Alexander von Humboldt

Universidad de Antofagasta

Antofagasta, Chile

Mauricio braun

Carlos Henríquez

Investigador

Biotecnología

Centro de Estudios Avanzados en Zonas Áridas

Coquimbo, Chile

Lucy Belmar

Profesor asistente adjunto

Facultad de Ciencias de la Vida

Universidad Andrés Bello

Santiago, Chile

Barbara Jacob

Researcher and coordinator of Ecoclimatic Laboratory

Aquatic Ecosystems Line

Centro de Investigación en Ecosistemas de la Patagonia (CIEP)

Coyhaique, Chile

Marcel Ramos

Associate professor

Departamento de Biología Marina

Universidad Católica del Norte

Coquimbo, Chile

Veronica Molina

Profesor Asociado

Biologia

Universidad de Playa Ancha

Valparaiso, Chile

Silvana Collado

Asistente de Investigación

Proyecto Núcleo Milenio Paleoclima del Hemisferio Sur

Concepción, Chile

Gadiel Alarcon

Coordinador

Operaciones Marinas

Instituto Milenio de Oceanografía

Concepción, Chile

Victor Villagran

Ingeniero Civil Electrónico

Geofísica

Universidad de Concepcion

Concepcion, Chile

Silvio Pantoja

Profesor Titular

Oceanography

Universidad de Concepción

Concepción, Chile

Salvador Ramírez

Ingeniero

Departmento de Oceanografia

Universidad de Concepcion

Concepcion, Chile

Boris DEWITTE

Researcher

Oceanography

CEAZA

La Serena, Chile

Juan Ugalde

Assistant Professor

Facultad de Ciencias de la Vida

Universidad Andrés Bello

Santiago, Chile

Alexander Galán

Profesor Asistente e Investigador Académico

Vicerrectoría de Investigación y Postgrado

Universidad Católica del Maule

Talca, Chile

Héctor Levipan

Profesor Asociado

Ciencias y Geografía

Universidad de Playa Ancha de Ciencias de la Educación

VALPARAISO, Chile

Carolina González

Investigador Postdoctoral

Instituto Milenio de Oceanografía

Concepción, Chile

Montserrat Aldunate

Investigadora Joven

Instituto Milenio de Oceanografía

Concepción, Chile

Paula Ruiz

Estudiante de Doctorado

Oceanografía

Universidad de Concepción

Concepción, Chile

Belén Franco

Postdoc

Instituto Milenio de Oceanografía

Concepción, Chile

Osvaldo Iván Ulloa Quijada

Líneas de Investigación

Educación

Ph.D., Dalhousie University. Canada, 1993

M.Sc., Dalhousie University. Chile, 1997

Biólogo Marino, Universidad de Concepción. Chile, 1983

Article (98)

BookWhole (2)

ConferencePaper (2)

Editorial (1)

Errata (1)

Proyecto (12)

MICROBIAL CARBON CYCLING IN ANOXIC MARINE ZONES=> NATURE AND SIGNIFICANCE OF AUTOTROPHIC PROCESSES

THAUMARCHAEAL ECOPHYSIOLOGY AMID SEASONAL DE-OXYGENATION ALONG THE CENTRAL CHILEAN COAST

Instituto Milenio de Oceanografía

LINKING BIOGEOCHEMICAL CYCLES IN THE OXYGEN MINIMUM ZONES OF THE EASTERN PACIFIC OCEAN THROUGH SINGLE-CELL GENOMICS OF KEY MICROORGANISMS

Microbial Oceanography of picocyanobacteria in the oxygen minimum zones of the eastern Pacific Ocean

Microbial Initiative in Low Oxygen areas off Concepción and Oregon

Microbial oceanography of the oxygen-deficient waters of the eastern tropical South Pacific

Picophytoplankton functional diversity and impact on the bacterial community in the hyper-oligotrophic South Pacific Ocean

ECOLOGÍA MOLECULAR Y GENÓMICA DE SISTEMAS MICROBIANOS NATURALES

CENTRO DE INVESTIGACIÓN OCEANOGRÁFICO EN EL PACÍFICO SUR-ORIENTAL (COPAS)

THE ROLE OF COASTAL UPWELLING ECOSYSTEM AND THE CONTINENTAL SHELF OFF CONCEPCION BAY, CENTRAL CHILE, IN THE ESTABLISHMENT OF THE MEGABENTHOS UNDER THE INFLUENCE OF THE PERU-CHILE UNDERCURRENT.

Review (7)