The Deep Ocean

What are the physical and biogeochemical characteristics of deep and ultra-deep waters of the eastern South Pacific, and which of those determine the diversity and functional structure of their pelagic communities?
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Publicaciones

In spite of the inexperience and logistical challenges in deep-sea oceanography, initiating the exploration and studying of the deep and ultra deep waters of the South Pacific proved to be extremely rewarding, and constitute one of the most promising research goals for the next phase. As for Research Theme I, the first period showed us the need to more effectively integrate the physical, chemical and biological aspects of the study of the deep ocean. Theme II will be organized around a single grand question: What are the physical and biogeochemical characteristics of deep and ultra-deep waters of the eastern South Pacific, and which of those determine the diversity and functional structure of their pelagic communities?
To address this question, we will analyze hydrographic data and chemical and biological samples collected during our recent expeditions, as well as those resulting from the new initiatives planned for the second period. In particular, we will work on new and past
hydrographic data (T, S, O2, nutrients), as well as on new data on carbonate chemistry, inorganic radiocarbon (Δ14C), and the stable isotopic composition (δ13C, δ15N) of particulate water-column matter. Moreover, we will continue investigating the abundance, diversity, and metabolic or trophic potential of their planktonic (microorganisms and zooplankton) communities, combining traditional techniques with modern molecular and genomic approaches. Tackling this main question in depth will require new technologies, for example in situ
pumps or incubation systems that can work at extremely high pressure and are not available in the market, and undersea robotic samplers and vehicles (ROVs and AUVs). For this, we will team local engineers with collaborators from abroad to work on the design and implementation of such new technologies. The investigation of the deep sea is heavily dependent on technology. Chile has previously had little or no expertise in marine technology appropriate for deep-sea exploration, making Chile dependent on foreign expertise. This has recently started to change. Dr. Giancarlo Troni, an Assistant Professor contracted by the PUC School of Engineering in 2016, has accepted our invitation to join the Deep Sea team. Dr. Troni is an expert in marine robotics and underwater vehicle navigation with PhD from Johns Hopkins and postdoctoral experience at the Monterrey Bay Aquarium Research (MBARI, a world leader in the field). His research will generate “invented in Chile” and “made in Chile” innovations in marine technology generally, specifically essential for making the deep ocean accessible for Chilean scientists.

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Publicaciones

The community structure of hyperiid amphipods associated with two seamount regions in the South-east Pacific

Journal of the Marine Biological Association UK (JMBA) | Páginas 1-12

doi:10.1017/S0025315420001344Enero de 2021

Espinosa, L.Medellín-Mora, JohanaCorredor-Acosta, A.Escribano, R.
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Mesoscale variability in the boundaries of the oxygen minimum zone in the eastern South Pacific: influence of intrathermocline eddies

Journal of Geophysical Research: Oceans

doi:10.1029/2019JC015272Diciembre de 2020

Auger, P.Bento, J.PHormazábal, S.Morales, C.E.Bustamante, A.
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The Influence of pCO2-Driven Ocean Acidification on Open Ocean Bacterial Communities during A Short-Term Microcosm Experiment in the Eastern Tropical South Pacific (ETSP) off Northern Chile

Microorganisms mdpi | Volumen 8, Páginas 1-17

doi:10.3390/microorganisms8121924Diciembre de 2020

Aguayo, P.Campos, V.L Henríquez, C.Olivares, F.De la Iglesia, R.Ulloa, O.Vargas, C.A.
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Upwelling intensity modulates the fitness and physiological performance of coastal species: Implications for the aquaculture of the scallop Argopecten purpuratus in the Humboldt Current System

Science of The Total Environment | Volumen 745, Artículo 140949

doi:10.1016/j.scitotenv.2020.140949Noviembre de 2020

Ramajó, L.Valladares, M.Astudillo, O.Fernández, C.Rodríguez-Navarro, A. BWatt-Arévalo, P.Aguayo, P....
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Potential virus-mediated nitrogen cycling in oxygen-depleted oceanic waters

ISME Journal

doi:10.1038/s41396-020-00825-6Noviembre de 2020

Gazitúa, M.CVik, D.RRoux, S.Gregory, A.CBolduc, B.Winder, B.Mulholland, M.RHallam, S.JUlloa, O.Sullivan, M.B
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Genome‐resolved viral ecology in a marine oxygen minimum zone (OMZ)

Environmental Microbiology

doi:10.1111/1462-2920.15313Noviembre de 2020

Vik, D.Gazitúa, M. CSun, C.L Zayed, A. AAldunate, M.Mulholland, M.RUlloa, O.Sullivan, M.B
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Zonal and depth patterns in the trophic and community structure of hyperiid amphipods in the Southeast Pacific.

Deep Sea Research Part I: Oceanographic Research Papers | Volumen 165, Artículo 103402

doi:10.1016/j.dsr.2020.103402Noviembre de 2020

Espinosa, L.Bode, A.Escribano, R.
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A comparison of marine Fe and Mn cycling: U.S. GEOTRACES GN01 Western Arctic case study

Geochimica et Cosmochimica Acta | Volumen 288, Páginas 138-160

doi:10.1016/j.gca.2020.08.006Noviembre de 2020

Jensen, L. TMorton, P.Twining, B.SHeller, M.Hatta, M....Fitzsimmons, J.N
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Intra‐seasonal hydrographic variations and nearshore carbonates system off northern Chile during the 2015 El Niño event

Journal of Geophysical Research: Biogeosciences | Volumen 125, Páginas 1-17

doi:10.1029/2020JG005704Noviembre de 2020

Vargas, C.A.Aguilera, V.M.Dewitte, B.
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Size-Fractionated Contribution of Microbial Biomass to Suspended Organic Matter in the Eastern Tropical South Pacific Oxygen Minimum Zone

Frontiers in Marine Science | Volumen 7, Páginas 1-20

doi:10.3389/fmars.2020.540643Octubre de 2020

Cantarero, S.Henríquez, C.Dildar, N.Vargas, C.A.Von Dassow, P.Cornejo, M.Sepúlveda, J.
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Fatty acid composition in the endemic Humboldt Current krill, Euphausia mucronata (Crustacea, Euphausiacea) in relation to the phytoplankton community and oceanographic variability off Dichato coast in central Chile

Progress in Oceanography | Volumen 188, Páginas 1-11

doi:10.1016/j.pocean.2020.102425Octubre de 2020

Riquelme-Bugueño, R.Pantoja-Gutiérrez, S.Srain, B.Schneider, W.Jorquera, E.Anabalón, V.
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Diel vertical migration into anoxic and high‐pCO2 waters: acoustic and net‐based krill observations in the Humboldt Current

Scientific Reports | Volumen 10, Páginas 1-11

doi:10.1038/s41598-020-73702-zOctubre de 2020

Riquelme-Bugueño, R.Pérez-Santo, I.Alegría, N.Urbina, M.Escribano, R.Vargas, C.A.
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Factors controlling plankton community production, export flux, and particulate matter stoichiometry in the coastal upwelling system off Peru

Biogeosciences | Volumen 17, Páginas 4831-4852

doi:10.5194/bg-17-4831-2020Octubre de 2020

Bach, L.Paul, A. Boxhammer, T.Von der Esch, E.Graco, M.Schulz, K.Aguayo, P....
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Distinct oxygen environments shape picoeukaryote assemblages thriving oxygen minimum zone waters off central Chile

Journal of Plankton Research | Volumen 42, Páginas 514-529

doi:10.1093/plankt/fbaa036Octubre de 2020

De la Iglesia, R.Echenique-Subiabre, I.Rodríguez-Marconi, S.Espinoza, J.PVon Dassow, P.Ulloa, O.Trefault, N.
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Spatiotemporal Distribution of Key Pelagic Microbes in a Seasonal Oxygen-Deficient Coastal Upwelling System of the Eastern South Pacific Ocean

Frontiers in Marine Science | Volumen 7, Páginas 1-17

doi:10.3389/fmars.2020.561597Septiembre de 2020

Molina, V.Belmar, L.Levipan, H.ARamírez-Flandes, S.Anguita, C.Galán, A.Montes, I.Ulloa, O.
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Tidally Forced Saltwater Intrusions might Impact the Quality of Drinking Water, the Valdivia River (40◦ S), Chile Estuary Case

Water | Páginas 1-18

doi:10.3390/w12092387Agosto de 2020

Garcés-Vargas, J.Schneider, W.Pinochet, A.Piñones, A.Olguín, F.Briera, D.Wan, Y.
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Revealing enigmatic mucus structures in the deep sea using DeepPIV

Nature | Volumen 583, Páginas 78-82

doi:10.1038/s41586-020-2345-2Julio de 2020

Katija, K.Troni, G.Daniels, J.Lance, K.Sherlock, R. E.Sherman, A. D.Robison, B. H.
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Spatio-Temporal Variability of Chlorophyll-A and Environmental Variables in the Panama Bight

Remote Sensing | Volumen 12, Páginas 1-26

doi:10.3390/rs12132150Julio de 2020

Corredor-Acosta, A.Cortés-Chong, N.Acosta, A.Pizarro-Koch, M.Vargas, A.Medellín-Mora, JohanaSaldías, G.SEcheverry-Guerra, V.Gutiérrez-Fuentes, J.Betancur-Turizo, S.
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The role of the Magellan Strait on the southwest South Atlantic shelf

Estuarine, Coastal and Shelf Science | Volumen 237, Artículo 106661

doi:10.1016/j.ecss.2020.106661Mayo de 2020

Brun, A.A.Ramírez, N.Pizarro, O.Piola, A.R.
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The Influence of Diapycnal Nutrient Fluxes on Phytoplankton Size Distribution in an Area of Intense Mesoscale and Submesoscale Activity off Concepción, Chile

Journal of Geophysical Research: Oceans | Volumen 125, Páginas 1-20

doi:10.1029/2019JC015539Mayo de 2020

Corredor-Acosta, A.Morales, C.E.Anabalón, V.Valencia, L.Hormazábal, S.Rodríguez-Santana, A.
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Greenhouse gas cycling by the plastisphere: The sleeper issue of plastic pollution

CHEMOSPHERE | Volumen 246, Artículo 125709

doi:10.1016/j.chemosphere.2019.125709Mayo de 2020

Cornejo, M.Molina, V.Pavez, J.Silva, N.
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Testing for deterministic succession in metazoan parasite communities of marine fish

ECOLOGY LETTERS | Volumen 23, Número 4, Páginas 631-641

doi:10.1111/ele.13463Abril de 2020

Espínola-Novelo, J.FGonzález, M.TPacheco, A.SLuque, J.L Oliva, M.E.
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Calicotyle hydrolagi n. sp. (Monogenea: Monocotylidae) infecting the deep-sea Eastern Pacific black ghost shark Hydrolagus melanophasma from the Atacama Trench, with comments on host specificity of Calicotyle spp.

Parasitology International | Volumen 75, Artículo 102025

doi:10.1016/j.parint.2019.102025Abril de 2020

Ñacari, L.Droguet, F.Sepulveda, F. A Escribano, R.Oliva, M.E.
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A review of the potential genes implicated in follicular atresia in teleost fish

Marine Genomics | Volumen 50, Artículo 100704

doi:10.1016/j.margen.2019.100704Abril de 2020

González-Kother, P.Oliva, M.E.Tanguy, A.Moraga, D.
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pH and other upwelling hydrographic drivers in regulating copepod reproduction during the 2015 El Niño event: A follow-up study

Estuarine, Coastal and Shelf Science | Volumen 234, Artículo 106640

doi:10.1016/j.ecss.2020.106640Marzo de 2020

Aguilera, V.M.
TA

Microplastic ingestion cause intestinal lesions in the intertidal fish Girella laevifrons

Marine Pollution Bulletin | Volumen 151, Artículo 110795

doi:10.1016/j.marpolbul.2019.110795Febrero de 2020

Ahrendt, C.Pérez-Venegas, D. JUrbina, M.Gonzalez, C.Echeveste, P.Aldana, M.Pulgar, J.Galbán-Malagón, C.
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Marine invertebrate larvae love plastics: Habitat selection and settlement on artificial substrates

Environmental Pollution

doi:10.1016/j.envpol.2019.113571Febrero de 2020

Pinochet, J.Urbina, M.Lagos, M. E
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Zooplankton diel vertical migration and downward C flux into the oxygen minimum zone in the highly productive upwelling region off northern Chile

Biogeosciences | Volumen 17, Páginas 455-473

doi:10.5194/bg-17-455-2020Enero de 2020

Tutasi, P.Escribano, R.
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Genetic diversity and novel lineages in the cosmopolitan copepod Pleuromamma abdominalis in the Southeast Pacifc

Scientific Reports | Volumen 10, Páginas 1-15

doi:10.1038/s41598-019-56935-5Enero de 2020

González, C.E.Goetze, E.Escribano, R.Ulloa, O.Victoriano, P.
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Glacial Lake Outburst Flood (GLOF) Events and Water Response in A Patagonian Fjord

Water | Volumen 12, Páginas 1-21

doi:10.3390/w12010248Enero de 2020

Ross, L.Pérez-Santos, I.Parady, B.Castro, L.Valle-Levinson, A.Schneider, W.
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Editorial: El Niño-Southern Oscillation on a Changing Planet: Consequences for Coastal Ecosystems

Frontiers in Marine Science | Volumen 6, Páginas 1-2

doi:10.3389/fmars.2019.00774/fullDiciembre de 2019

Riascos, J. MGutiérrez, D.Escribano, R.Thtje, S.
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Seasonal Variability of the Southern Tip of the Oxygen Minimum Zone in the Eastern South Pacific (30°‐38°S): A Modeling Study

Journal of Geophysical Research: Oceans | Volumen 124, Páginas 8574-8604

doi:10.1029/2019JC015201Diciembre de 2019

Pizarro-Koch, M.Pizarro, O.Dewite, B.Montes, I.Ramos, M.Paulmier, A.Garcon, V.
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Multidisciplinary Observing in the World Ocean’s Oxygen Minimum Zone Regions: From Climate to Fish — The VOICE Initiative

Frontiers in Marine Science | Volumen 6, Páginas 1-22

doi:10.3389/fmars.2019.00722Diciembre de 2019

Garcon, V.Karstensen, J.Palacz, A.Telszewski, M.Aparco Lara, T.Breitburg, D.Pizarro, O....
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Sublethal exposure to copper supresses the ability to acclimate to hypoxia in a model fish species

Environmental Pollution

doi:10.1016/j.aquatox.2019.105325Diciembre de 2019

Fitzgerald, J. AUrbina, M.Rogers, N. JBury, N. RKatsiadaki, L.Wilson, R. WSantos, E. M
AT

Relative importance of predatory versus non-predatory mortality for dominant copepod species in the northern Chilean (23°S) Humboldt Current System

Marine Ecology Progress Series | Volumen 630, Páginas 13-23

doi:10.3354/meps13130Noviembre de 2019

Yañez, S.Hidalgo, P.Tang, K.W
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Community structured production of zooplankton in the eastern boundary upwelling system off central/southern Chile (2003–2012)

ICES Journal of Marine Science | Páginas 1-17

doi:10.1093/icesjms/fsz193Noviembre de 2019

Medellín-Mora, JohanaAtkinson, A.Escribano, R.
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Towards integrating evolution, metabolism, and climate change studies of marine ecosystems

Trends in Ecology & Evolution | Volumen 34, Artículo 11

doi:10.1016/j.tree.2019.07.003Noviembre de 2019

Baltar, F.Bayer, B.Bednarsek, N.Deppeter, S.Escribano, R.González, C.E....Herndl, G.J
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Two new species of Acanthocotyle Monticelli, 1888 (Monogenea: Acanthocotylidae), parasites of two deep-sea skates (Elasmobranchii: Rajiformes) in the South-East Pacific

Parasites & Vectors | Volumen 12, Artículo 512

doi:10.1186/s13071-019-3756-5Octubre de 2019

Ñacari, L.Sepúlveda, F.AEscribano, R.Oliva, M.E.
AT

Synoptic-scale variability of surface winds and ocean response to atmospheric forcing in the eastern austral Pacific Ocean, Ocean

Ocean Science | Volumen 15, Páginas 1247-1266

doi:10.5194/os-15-1247-2019Septiembre de 2019

Pérez-Santos, I.Seguel, R.Schneider, W.Linford, P.Donoso, D.Navarro, E.Amaya-Cárcamo, C.Pinilla, E.Daneri, G.
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Impacts of reduced inorganic N:P ratio on three distinct plankton communities in the Humboldt upwelling system

Marine Biology | Volumen 166, Páginas 1-17

doi:10.1007/s00227-019-3561-xSeptiembre de 2019

Spilling, K.Camarena-Gómez, M-TLipsewers, T.Martínez-Varela, A.Díaz-Rosas, F.Von Dassow, P....
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Global perspectives on observing ocean boundary current systems

Frontiers in Marine Science | Volumen 6, Artículo 423

doi:10.3389/fmars.2019.00423Agosto de 2019

Todd, R.EChavez, F.PClayton, S.Cravatte, S. Goes, M....Escribano, R....Zhang, L.
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The impact of spring-neap tidal-stream cycles in tidal energy assessments in the Chilean Inland Sea

Renewable Energy | Volumen 139, Páginas 496-506

doi:10.1016/j.renene.2019.02.092Agosto de 2019

Artal, O.Pizarro, O.H.Sepúlveda, H.
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Subsurface Mesoscale Eddy Generation in the Ocean off Central Chile

Journal of Geophysical Research: Oceans | Volumen 124, Páginas 5700-5722

doi:10.1029/2018JC014723Agosto de 2019

Contreras, M.Pizarro, O.Dewitte, B.H. Sepúlveda, H. Renault, L.
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The glass half-empty: climate change drives lower freshwater input in the coastal system of the Chilean Northern Patagonia

Climatic Change | Volumen 155, Páginas 417-435

doi:10.1007/s10584-019-02495-6Agosto de 2019

Aguayo, R.León-Muñoz, J.Vargas-Baecheler, J.Montecinos, A.Garreaud, R.Urbina, M....
AT

Monitoring Microbial Communities in the Marine Environment

Cytometry Part A | Volumen 95, Páginas 717-721

doi:10.1002/cyto.a.23763Julio de 2019

van den Engh, G.Ulloa, O.Karl, D.M
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Understanding Sea Level Change in the South Pacific During the Late 20th Century and Early 21st Century

Journal of Geophysical Research: Oceans | Volumen 124, Páginas 3849-3858

doi:10.1029/2018JC014828Junio de 2019

Albrecht, F.Pizarro, O.Montecinos, A.Zhang, X.
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Identification assisted by molecular markers of larval parasites in two limpet species (Patellogastropoda: Nacella) inhabiting Antarctic and Magellan coastal systems

Polar Biology | Volumen 42, Número 6, Páginas 1175-1182

doi:10.1007/s00300-019-02511-6Junio de 2019

Flores, K.López, Z.Levicoy, D.Muñoz-Ramírez, C.PGonzález-Wevar, C.Oliva, M.E.Cárdenas, L.
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Dominant scales of subtidal variability in coastal hydrography of the Northern Chilean Patagonia

Journal of Marine Systems | Volumen 193, Páginas 59-73

doi:10.1016/j.jmarsys.2018.12.008Mayo de 2019

Narváez, D.AVargas, C.A.Cuevas, L. AGarcía-Loyola, S. ALara, C.Segura, C.Tapia, F. JBroitman, B. R
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Nitrogen assimilation in picocyanobacteria inhabiting the oxygen‐deficient waters of the eastern tropical North and South Pacific

Limnology and Oceanography | Volumen 65, Páginas 437-453

doi:10.1002/lno.11315Febrero de 2019

Aldunate, M.Henríquez, C.Ji, Q.Lueders-Dumont, J.Mulholland, M.R.B. Ward, B.Von Dassow, P.Ulloa, O.
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Decreased Metabolic Rate in the Mole Crabs, Emerita analoga, Infected with the Acanthocephalan Profilicollis altmani.

Journal of Parasitology | Volumen 105, Páginas 19-24

doi:10.1645/18-29Enero de 2019

Figueroa, L. B Urbina, M.Riedemann, A.Rodriguez, S. MPaschke, K.
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Heavy metals’ content (Al, Fe, Cu, Mn, Pb and Hg) in sediments of Laguna Verde Bay Valparaíso, Chile

Latin American Journal of Aquatic Research | Volumen 46, Páginas 1116-1121

doi:10.3856/vol46-issue5-fulltext-24.Diciembre de 2018

Pavez, J.Silva, N.Cornejo, M.Rivera, C.
AT

Implementing ecosystem-based fisheries management: Lessons from Chile's experience.

Marine Policy | Volumen 97, Páginas 82-90

doi:10.1016/j.marpol.2018.08.037Noviembre de 2018

Porobic, J.Fulton, E.A.Frusher, S.Parada, C.Haward, M.Ernst, B.Stram, D.
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Seasonality of the N2O cycle of the Biobío River during the megadrought

JOURNAL OF LIMNOLOGY | Volumen 78, Páginas 14-26

doi:10.4081/jlimnol.2018.1767Septiembre de 2018

Cornejo, M.Figueroa, R. Parra, O.
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Beyond chlorophyll fluorescence: The time is right to expand biological measurements in ocean observing programs

Limnology and Oceanography | Volumen 27, Número 3, Páginas 89-90

doi:10.1002/lob.10243Agosto de 2018

Boss, E.Waite, A.Muller-Karger, F.Yamazaki, H.Wanninkhof, R.Uitz, J....Cornejo, M....Acinas, SG
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Distribution of greenhouse gases in hyper-arid and arid areas of northern Chile and the contribution of the high altitude wetland microbiome (Salar de Huasco, Chile) Antonie Van Leeuwenhoek

ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICR | Volumen 1432, Páginas 111-1421

doi:10.1007/s10482-018-1078-9Agosto de 2018

Molina, V.Eissier, Y.Cornejo, M.Galand, P.EDorador, C.Hengst, M.Fernandez, C.Francois, J.P
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Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses

Progress in Oceanography | Volumen 165, Páginas 257-267

doi:10.1016/j.pocean.2018.06.008Julio de 2018

Yañez, S.Hidalgo, P.Ruz, P.M.Tang, K.W.
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The activity of nitrifying microorganisms in a high-altitude Andean wetland

FEMS MICROBIOLOGY ECOLOGY | Volumen 94, Artículo fiy062

doi:10.1093/femsec/fiy062Junio de 2018

Molina, V.Dorador, C.Fernández, C.Bristow, L.Eissler, Y.Hengst, M....Cornejo, M.
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Metagenome Sequencing of the Microbial Community of a Solar Saltern Crystallizer Pond at Cáhuil Lagoon, Chile

Genome Announcements | Volumen 2, Páginas 1-3

doi:10.1128/genomeA.01172-14.Diciembre de 2014

Plominsky, A. MDelherbe, N.Ulloa, O.De la Iglesia, R.Von Dassow, P.van den Engh, G.Trefault, N....
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Nitrogen excretion by mesozooplankton in a coastal upwelling area: Seasonal trends and implications for biological production

| Volumen 406, Páginas 116-124

doi:10.1016/j.jembe.2011.05.029Septiembre de 2011

Pérez, M.Fernández, C.Escribano, R.
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