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

Revealing enigmatic mucus structures in the deep sea using DeepPIV

Nature research journal | Pages 1-5

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

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

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

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.

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

Zooplankton diel vertical migration and downward C flux into the oxygen minimum zone in the highly productive upwelling region off northern Chile

Biogeosciences | Volume 17, Pages 455-473

doi:10.5194/bg-17-455-2020January, 2020

Genetic diversity and novel lineages in the cosmopolitan copepod Pleuromamma abdominalis in the Southeast Pacifc

Scientific Reports | Volume 10, Pages 1-15

doi:10.1038/s41598-019-56935-5January, 2020

Glacial Lake Outburst Flood (GLOF) Events and Water Response in A Patagonian Fjord

Water | Volume 12, Pages 1-21

doi:10.3390/w12010248January, 2020

Ross, L.Pérez-Santos, I.Parady, B.Castro, L.Valle-Levinson, A.Schneider, W.

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.

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

Limnology and Oceanography | Pages 1-17

doi:10.1002/lno.11315September, 2019

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

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.

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.

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....

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

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.

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

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

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.

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