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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Publications

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.

Leaders

Researchers

Meet our researchers

Publications

Anthropogenic underwater vibrations are sensed and stressful for the shore crab Carcinus maenas*

Environmental Pollution | Volume 285, Pages 1-9

doi:10.1016/j.envpol.2021.117148September, 2021

Aimon, C.Simpson, S.DHazelwood, R.ABruintjes, R.Urbina, M.

Uncovering the Composition and Diversity of Pelagic Copepods in the Oligotrophic Blue Water of the South Pacific Subtropical Gyre

Frontiers in Marine Science | Volume 8, Pages 2-18

doi:10.3389/fmars.2021.625842July, 2021

Age dependent physiological tolerances explain population dynamics and distribution in the intertidal zone: A study with porcelain crabs

Marine Environmental Research | Volume 169, Pages 1-8

doi:10.1016/j.marenvres.2021.105343July, 2021

Lagos, M.ECastillo, N.Albarrán-Mélzer, N.Pinochet, J.Gebauer, J.Urbina, M.

Plankton respiration in the Atacama Trench region: Implications for particulate organic carbon flux into the hadal realm

Limnology and Oceanography | Volume 9999, Pages 1-15

doi:10.1002/lno.11866June, 2021

Annual cycle of growth and population structure of the estuarine crab Hemigrapsus crenulatus (Brachyura: Varunidae) off central Chile.

Journal of the Marine Biological Association of the United Kingdom | Volume 1, Issue 2, Pages 343-357

doi:10.1017/S0025315421000333June, 2021

Riquelme-Bugueño, R.Luppi, T.Saldías, G. S.Lagos, M. E.Urbina, M.Retamal, M. A.

Eurythenes atacamensis sp. nov. (Crustacea: Amphipoda) exhibits ontogenetic vertical stratification across abyssal and hadal depths in the Atacama Trench, eastern South Pacific Ocean

Marine Biodiversity | Volume 51, Pages 1-20

doi:10.1007/s12526-021-01182-zMay, 2021

Environmental determinants of COVID‑19 transmission across a wide climatic gradient in Chile

Scientific Reports | Volume 11, Pages 1-8

doi:10.1038/s41598-021-89213-4May, 2021

Correa-Araneda, F.Ulloa-Yáñez, A.Núñez, D.Boyera, L.Tonin, A.M Urbina, M....., ....

Aerobic and anaerobic metabolic scaling in the burrowing freshwater crayfsh Parastacus pugnax

Journal of Comparative Physiology B

doi:10.1007/s00360-021-01374-wMay, 2021

Toro-Chacón, J.Tickell, F.González, R.Victoriano, P.FFernández-Urruzola, I.Urbina, M.

Flow cytometry with cell sorting and sequencing as a tool for the study of the stomach microbiota of the Humboldt Current krill (Euphausiacea)

Journal of Crustacean Biology | Volume 41, Article ruab006

doi:10.1093/jcbiol/ruab006April, 2021

A source of isotopically light organic carbon in a low-pH anoxic marine zone

Nature Communications | Volume 12, Issue 1604, Pages 1-11

doi:10.1038/s41467-021-21871-4March, 2021

The cyanobacterium Prochlorococcus has divergent light-harvesting antennae and may have evolved in a low-oxygen ocean

Proceedings of the National Academy of Sciences of the United States of America | Volume 118, Issue 11, Pages 1-6

doi:10.1073/pnas.2025638118March, 2021

Ulloa, O.Henríquez, C.Ramírez-Flandes, S.Murillo, A.A.M. Plominsky, A.Morgan-Lang, C.Hallam, S.J

Local and remote physical processes driving variability of the planktonic system in the Juan Fernández Archipelago: A multidisciplinary framework providing conservation insights

Aquatic Conservation Marine and Freshwater Ecosystems | Volume 31, Pages 253-272

doi:10.1002/aqc.3499February, 2021

Parada, C.Escribano, R.Morales, C.E.Ernst, B.Cornejo-Guzmán, S.Santa Cruz, F.Sandoval-Belmar, M.Rivara, P....

Distribution and biodiversity patterns of hyperiid amphipods across the coastal-offshore gradient of the sub-tropical Southeast Pacific

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

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

doi:10.1017/S0025315420001344January, 2021

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:10.1029/2019JC015272December, 2020

Environmental gradients and spatial patterns of Calanoid copepods in the Southeast Pacific

Fronteirs in Ecology and Evolution | Volume 8, Pages 1-16

doi:10.3389/fevo.2020.554409November, 2020

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 | Volume 745, Article 140949

doi:10.1016/j.scitotenv.2020.140949November, 2020

Ramajó, L.Valladares, M.Astudillo, O.Fernández, C.Rodríguez-Navarro, A. BWatt-Arévalo, P.Aguayo, P....

Potential virus-mediated nitrogen cycling in oxygen-depleted oceanic waters

ISME Journal

doi:10.1038/s41396-020-00825-6November, 2020

Gazitúa, M.CVik, D.RRoux, S.Gregory, A.CBolduc, B.Winder, B.Mulholland, M.RHallam, S.JUlloa, O.Sullivan, M.B

Genome‐resolved viral ecology in a marine oxygen minimum zone (OMZ)

Environmental Microbiology

doi:10.1111/1462-2920.15313November, 2020

Vik, D.Gazitúa, M. CSun, C.L Zayed, A. AAldunate, M.Mulholland, M.RUlloa, O.Sullivan, M.B

A comparison of marine Fe and Mn cycling: U.S. GEOTRACES GN01 Western Arctic case study

Geochimica et Cosmochimica Acta | Volume 288, Pages 138-160

doi:10.1016/j.gca.2020.08.006November, 2020

Jensen, L. TMorton, P.Twining, B.SHeller, M.Hatta, M....Fitzsimmons, J.N

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 | Volume 165, Article 103402

doi:10.1016/j.dsr.2020.103402November, 2020

Diel vertical migration into anoxic and high‐pCO2 waters: acoustic and net‐based krill observations in the Humboldt Current

Scientific Reports | Volume 10, Pages 1-11

doi:10.1038/s41598-020-73702-zOctober, 2020

Factors controlling plankton community production, export flux, and particulate matter stoichiometry in the coastal upwelling system off Peru

Biogeosciences | Volume 17, Pages 4831-4852

doi:10.5194/bg-17-4831-2020October, 2020

Bach, L.Paul, A. Boxhammer, T.Von der Esch, E.Graco, M.Schulz, K.Aguayo, P....

Distinct oxygen environments shape picoeukaryote assemblages thriving oxygen minimum zone waters off central Chile

Journal of Plankton Research | Volume 42, Pages 514-529

doi:10.1093/plankt/fbaa036October, 2020

De la Iglesia, R.Echenique-Subiabre, I.Rodríguez-Marconi, S.Espinoza, J.PVon Dassow, P.Ulloa, O.Trefault, N.

Anthropogenic noise disrupts mating behavior and metabolic rate in a marine invertebrate

Proceedings of meetings on acoustics | Volume 37, Pages 1-12

doi:10.1121/2.0001302September, 2020

Ruiz, P.AHinojosa, I.AUezúa, A.Urbina, M.

Revealing enigmatic mucus structures in the deep sea using DeepPIV

Nature | Volume 583, Pages 78-82

doi:10.1038/s41586-020-2345-2July, 2020

Katija, K.Troni, G.Daniels, J.Lance, K.Sherlock, R. E.Sherman, A. D.Robison, B. H.

Unexpected source and transport of iron from the deep Peru Margin

ACS Earth and Space Chemistry | Volume 4, Pages 977-992

doi:10.1021/acsearthspacechem.0c00066July, 2020

Lam, P.Heller, M.Lerner, P.EMoffett, J.WBuck, K.

Spatio-Temporal Variability of Chlorophyll-A and Environmental Variables in the Panama Bight

Remote Sensing | Volume 12, Pages 1-26

doi:10.3390/rs12132150July, 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.

Autotrophic carbon fixation pathways along the redox gradient in oxygen‐depleted oceanic waters

Environmental Microbiology Reports | Volume 12, Issue 3, Pages 334-341

doi:10.1111/1758-2229.12837June, 2020

The role of the Magellan Strait on the southwest South Atlantic shelf

Estuarine, Coastal and Shelf Science | Volume 237, Article 106661

doi:10.1016/j.ecss.2020.106661May, 2020

Brun, A.A.Ramírez, N.Pizarro, O.Piola, A.R.

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 | Volume 125, Pages 1-20

doi:10.1029/2019JC015539May, 2020

Greenhouse gas cycling by the plastisphere: The sleeper issue of plastic pollution

CHEMOSPHERE | Volume 246, Article 125709

doi:10.1016/j.chemosphere.2019.125709May, 2020

Cornejo, M.Molina, V.Pavez, J.Silva, N.

Testing for deterministic succession in metazoan parasite communities of marine fish

ECOLOGY LETTERS | Volume 23, Issue 4, Pages 631-641

doi:10.1111/ele.13463April, 2020

Espínola-Novelo, J.FGonzález, M.TPacheco, A.SLuque, J.L Oliva, M.E.

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 | Volume 75, Article 102025

doi:10.1016/j.parint.2019.102025April, 2020

Ñacari, L.Droguet, F.Sepulveda, F. A Escribano, R.Oliva, M.E.

A review of the potential genes implicated in follicular atresia in teleost fish

Marine Genomics | Volume 50, Article 100704

doi:10.1016/j.margen.2019.100704April, 2020

González-Kother, P.Oliva, M.E.Tanguy, A.Moraga, D.

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 | Volume 234, Article 106640

doi:10.1016/j.ecss.2020.106640March, 2020

Marine invertebrate larvae love plastics: Habitat selection and settlement on artificial substrates

Environmental Pollution

doi:10.1016/j.envpol.2019.113571February, 2020

Pinochet, J.Urbina, M.Lagos, M. E

Microplastic ingestion cause intestinal lesions in the intertidal fish Girella laevifrons

Marine Pollution Bulletin | Volume 151, Article 110795

doi:10.1016/j.marpolbul.2019.110795February, 2020

Ahrendt, C.Pérez-Venegas, D. JUrbina, M.Gonzalez, C.Echeveste, P.Aldana, M.Pulgar, J.Galbán-Malagón, C.

Editorial: El Niño-Southern Oscillation on a Changing Planet: Consequences for Coastal Ecosystems

Frontiers in Marine Science | Volume 6, Pages 1-2

doi:10.3389/fmars.2019.00774/fullDecember, 2019

Riascos, J. MGutiérrez, D.Escribano, R.Thtje, S.

Multidisciplinary Observing in the World Ocean’s Oxygen Minimum Zone Regions: From Climate to Fish — The VOICE Initiative

Frontiers in Marine Science | Volume 6, Pages 1-22

doi:10.3389/fmars.2019.00722December, 2019

Garcon, V.Karstensen, J.Palacz, A.Telszewski, M.Aparco Lara, T.Breitburg, D.Pizarro, O....

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 | Volume 124, Pages 8574-8604

doi:10.1029/2019JC015201December, 2019

Pizarro-Koch, M.Pizarro, O.Dewite, B.Montes, I.Ramos, M.Paulmier, A.Garcon, V.

Sublethal exposure to copper supresses the ability to acclimate to hypoxia in a model fish species

Environmental Pollution

doi:10.1016/j.aquatox.2019.105325December, 2019

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

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 | Volume 630, Pages 13-23

doi:10.3354/meps13130November, 2019

Community structured production of zooplankton in the eastern boundary upwelling system off central/southern Chile (2003–2012)

ICES Journal of Marine Science | Pages 1-17

doi:10.1093/icesjms/fsz193November, 2019

Towards integrating evolution, metabolism, and climate change studies of marine ecosystems

Trends in Ecology & Evolution | Volume 34, Article 11

doi:10.1016/j.tree.2019.07.003November, 2019

Baltar, F.Bayer, B.Bednarsek, N.Deppeter, S.Escribano, R.González, C.E....Herndl, G.J

Two new species of Acanthocotyle Monticelli, 1888 (Monogenea: Acanthocotylidae), parasites of two deep-sea skates (Elasmobranchii: Rajiformes) in the South-East Pacific

Parasites & Vectors | Volume 12, Article 512

doi:10.1186/s13071-019-3756-5October, 2019

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

Ocean Science | Volume 15, Pages 1247-1266

doi:10.5194/os-15-1247-2019September, 2019

Pérez-Santos, I.Seguel, R.Schneider, W.Linford, P.Donoso, D.Navarro, E.Amaya-Cárcamo, C.Pinilla, E.Daneri, G.

Impacts of reduced inorganic N:P ratio on three distinct plankton communities in the Humboldt upwelling system

Marine Biology | Volume 166, Pages 1-17

doi:10.1007/s00227-019-3561-xSeptember, 2019

Spilling, K.Camarena-Gómez, M-TLipsewers, T.Martínez-Varela, A.Díaz-Rosas, F.Von Dassow, P....

Global perspectives on observing ocean boundary current systems

Frontiers in Marine Science | Volume 6, Article 423

doi:10.3389/fmars.2019.00423August, 2019

Todd, R.EChavez, F.PClayton, S.Cravatte, S. Goes, M....Escribano, R....Zhang, L.

The glass half-empty: climate change drives lower freshwater input in the coastal system of the Chilean Northern Patagonia

Climatic Change | Volume 155, Pages 417-435

doi:10.1007/s10584-019-02495-6August, 2019

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

Subsurface Mesoscale Eddy Generation in the Ocean off Central Chile

Journal of Geophysical Research: Oceans | Volume 124, Pages 5700-5722

doi:10.1029/2018JC014723August, 2019

Contreras, M.Pizarro, O.Dewitte, B.H. Sepúlveda, H. Renault, L.

The impact of spring-neap tidal-stream cycles in tidal energy assessments in the Chilean Inland Sea

Renewable Energy | Volume 139, Pages 496-506

doi:10.1016/j.renene.2019.02.092August, 2019

Artal, O.Pizarro, O.H.Sepúlveda, H.

Monitoring Microbial Communities in the Marine Environment

Cytometry Part A | Volume 95, Pages 717-721

doi:10.1002/cyto.a.23763July, 2019

Understanding Sea Level Change in the South Pacific During the Late 20th Century and Early 21st Century

Journal of Geophysical Research: Oceans | Volume 124, Pages 3849-3858

doi:10.1029/2018JC014828June, 2019

Albrecht, F.Pizarro, O.Montecinos, A.Zhang, X.

Identification assisted by molecular markers of larval parasites in two limpet species (Patellogastropoda: Nacella) inhabiting Antarctic and Magellan coastal systems

Polar Biology | Volume 42, Issue 6, Pages 1175-1182

doi:10.1007/s00300-019-02511-6June, 2019

Flores, K.López, Z.Levicoy, D.Muñoz-Ramírez, C.PGonzález-Wevar, C.Oliva, M.E.Cárdenas, L.

Dominant scales of subtidal variability in coastal hydrography of the Northern Chilean Patagonia

Journal of Marine Systems | Volume 193, Pages 59-73

doi:10.1016/j.jmarsys.2018.12.008May, 2019

Narváez, D.AVargas, C.A.Cuevas, L. AGarcía-Loyola, S. ALara, C.Segura, C.Tapia, F. JBroitman, B. R

Nitrogen assimilation in picocyanobacteria inhabiting the oxygen‐deficient waters of the eastern tropical North and South Pacific

Limnology and Oceanography | Volume 65, Pages 437-453

doi:10.1002/lno.11315February, 2019

Aldunate, M.Henríquez, C.Ji, Q.Lueders-Dumont, J.Mulholland, M.R.B. Ward, B.Von Dassow, P.Ulloa, O.

Decreased Metabolic Rate in the Mole Crabs, Emerita analoga, Infected with the Acanthocephalan Profilicollis altmani.

Journal of Parasitology | Volume 105, Pages 19-24

doi:10.1645/18-29January, 2019

Figueroa, L. B Urbina, M.Riedemann, A.Rodriguez, S. MPaschke, K.

Heavy metals’ content (Al, Fe, Cu, Mn, Pb and Hg) in sediments of Laguna Verde Bay Valparaíso, Chile

Latin American Journal of Aquatic Research | Volume 46, Pages 1116-1121

doi:10.3856/vol46-issue5-fulltext-24.December, 2018

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

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

Marine Policy | Volume 97, Pages 82-90

doi:10.1016/j.marpol.2018.08.037November, 2018

Porobic, J.Fulton, E.A.Frusher, S.Parada, C.Haward, M.Ernst, B.Stram, D.

Seasonality of the N2O cycle of the Biobío River during the megadrought

JOURNAL OF LIMNOLOGY | Volume 78, Pages 14-26

doi:10.4081/jlimnol.2018.1767September, 2018

Cornejo, M.Figueroa, R. Parra, O.

Beyond chlorophyll fluorescence: The time is right to expand biological measurements in ocean observing programs

Limnology and Oceanography | Volume 27, Issue 3, Pages 89-90

doi:10.1002/lob.10243August, 2018

Boss, E.Waite, A.Muller-Karger, F.Yamazaki, H.Wanninkhof, R.Uitz, J....Cornejo, M....Acinas, SG

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 | Volume 1432, Pages 111-1421

doi:10.1007/s10482-018-1078-9August, 2018

Molina, V.Eissier, Y.Cornejo, M.Galand, P.EDorador, C.Hengst, M.Fernandez, C.Francois, J.P

Copepod secondary production in the sea: Errors due to uneven molting and growth patterns and incidence of carcasses

Progress in Oceanography | Volume 165, Pages 257-267

doi:10.1016/j.pocean.2018.06.008July, 2018

The activity of nitrifying microorganisms in a high-altitude Andean wetland

FEMS MICROBIOLOGY ECOLOGY | Volume 94, Article fiy062

doi:10.1093/femsec/fiy062June, 2018

Molina, V.Dorador, C.Fernández, C.Bristow, L.Eissler, Y.Hengst, M....Cornejo, M.

Metagenome Sequencing of the Microbial Community of a Solar Saltern Crystallizer Pond at Cáhuil Lagoon, Chile

Genome Announcements | Volume 2, Pages 1-3

doi:10.1128/genomeA.01172-14.December, 2014

Plominsky, A. MDelherbe, N.Ulloa, O.De la Iglesia, R.Von Dassow, P.van den Engh, G.Trefault, N....

Nitrogen excretion by mesozooplankton in a coastal upwelling area: Seasonal trends and implications for biological production

| Volume 406, Pages 116-124

doi:10.1016/j.jembe.2011.05.029September, 2011

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