A Variable and Changing Ocean

41
Publications

Dominant environmental drivers, such as naturally high pCO2/low pH conditions partially coupled to naturally low O2 or anoxic waters, must be crucial in shaping ecosystem and biogeochemical functioning in the ESP. Additionally, as the global ocean is both acidifying (due to absorption of anthropogenic CO2) and losing O2 (due to warming and increased stratification), the ESP also provides one of the most important natural laboratories for predicting future ocean function in the Anthropocene by understanding how biological systems
adapt to and function under these conditions. The first 5 years period showed us the need to more effectively integrate the physical and chemical oceanographic understanding of the drivers of ocean variability, at the (sub)mesoscale (former Line 1) and on inter-annual to longer time scales (former line 2), with investigation of the consequences and responses at biogeochemical, ecological, and even organismal levels (former line 3). While the physical drivers are relatively well understood, the frontier of investigation is to understand the consequences for chemical, biogeochemical, and biological function, including potential adaptive responses. 
Theme I will be organized around three grand questions:
A: How well do biogeochemical flows, community composition, and even population structure of key species correlate with physical oceanographic drivers? It is not yet clear at what scale physical variability in the ocean, either due to mesoscale and sub-mesoscale structures (eddies, fronts, and jets) or due to inter-annual and longer-scale variability, impact carbon and energy flow and community composition, and it is completely unknown at what level physical processes structure populations, gene flow, and adaptations at
the organism level. The output goal is to determine the scales at which biogeochemical function, plankton community composition, and population structure of key zooplankton and phytoplankton are correlated with the physical structure of the ocean. 
B: How does biogeochemical function differ among norm-oxic, OMZ, and AMZ marine systems?
Nearly a decade ago it was proposed that acidification expands OMZs by affecting their biogeochemical function, but this remains unproven. Meanwhile, it becomes increasingly clear that AMZs may function differently than OMZs: In OMZs, bacterial metabolism is still largely aerobic, while in AMZs, truly anaerobic metabolisms become prominent, and effects of changes in metal cycling in anoxic waters might profoundly affect microorganism biochemistry and thus C and N flows. The output goal is to compare biogeochemical function in norm-oxic, OMZ, and AMZ waters.
C: What is the resilience of key communities and organisms to a changing ocean, and can that be predicted by their origin?
Continued focus will be on testing both natural plankton communities (phyto- and zooplankton) and cultured phytoplankton from different origins, comparing their resilience to stressors with the ranges and natural variability (i.e. hours, weeks, months) of such stressors
experienced in their local habitat. We will focus on exploring how environmental hardening upon low pH/high pCO2 conditions can provide intra-generational acclimatization upon Ocean Acidification scenarios, and how it may vary depending on generation time of marine organisms (e.g. phyto vs. zooplankton). Global scale “Common-garden” experiments with cosmopolitan species (inter-hemisphere studies) will allow to understand how natural variability across the ocean can determine the resilience of marine communities upon ocean changing conditions not only at regional, but also for the world ocean scale.

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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.
AT

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

Ruiz, P.Ramírez-Flandes, S.Rodríguez, E.Ulloa, O.
A

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.
AT

Response of phytoplankton assemblages from naturally acidic coastal ecosystems to elevated pCO2

Frontiers in Marine Science | Volume 7, Article 323

doi:10.3389/fmars.2020.00323May, 2020

Osma, N.Latorre-Melín, L.Jacob, B.Contreras, P.Y.Von Dassow, P.Vargas, C.A.
A

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

Corredor-Acosta, A.Morales, C.E.Anabalón, V.Valencia, L.Hormazábal, S.Rodríguez-Santana, A.
TA

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.
TA

Loss of filamentous multicellularity in Cyanobacteria - the extremophile Gloeocapsopsis sp. UTEX B3054 retained multicellular features at the genomic and behavioral level

Journal of Bacteriology

doi:10.1128/JB.00514-19April, 2020

Urrejola, C.Von Dassow, P.van den Engh, G.Salas, L.Mullineaux, C.W.Vicuña, R.Sanchez-Baracaldo, P.
A

Genetic tool development in marine protists: Emerging model organisms for experimental cell biology

Nature Methods

doi:10.1101/718239April, 2020

Faktorová, D.Nisbet, R.E.R.Fernández-Robledo, J.A.Casacuberta, E.Sudek, L.Allen, A.E...., Von Dassow, P...., Lukes, J.
A

Monitoring the occurrence of microplastic ingestion in Otariids along the Peruvian and Chilean coasts

Marine Pollution Bulletin | Volume 153, Article 110966

doi:10.1016/j.marpolbul.2020.110966April, 2020

Pérez-Venegas, D.J.Toro-Valdivieso, C.Ayala, F.Brito, B.Iturra, L.Arriagada, M....Urbina, M....Galbán-Malagón, C.
A

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

Aguilera, V.M.
TA

Universal Loop assembly (uLoop): open, efficient, and species-agnostic DNA fabrication

Synthetic Biology | Volume 5, Issue 1, Article ysaa001

doi:10.1101/744854February, 2020

Pollack, B.Matute, TNunez, I.Cerda, A.Lopez, C.Vargas, V...., Von Dassow, P...., Federici, F.
A

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.
AT

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
AT

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.
AT

Antagonistic interplay between pH and food resources afects copepod traits and performance in a yearround upwelling system

Scientific Reports

doi:10.1038/s41598-019-56621-6January, 2020

Vargas, C.A.Aguilera, V.M.G. Dam, H.
A

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.
AT

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.
AT

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
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 | Volume 630, Pages 13-23

doi:10.3354/meps13130November, 2019

Yañez, S.Hidalgo, P.Tang, K.W
AT

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

Medellín-Mora, JohanaAtkinson, A.Escribano, R.
AT

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
TA

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

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 | 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.
AT

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.
AT

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....
AT

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.
AT

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.
AT

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.
AT

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....
AT

Monitoring Microbial Communities in the Marine Environment

Cytometry Part A | Volume 95, Pages 717-721

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

van den Engh, G.Ulloa, O.Karl, D.M
AT

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.
AT

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.
TA

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
AT

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.
AT

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.
AT

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.
AT

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.
TA

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
AT

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
AT

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

Yañez, S.Hidalgo, P.Ruz, P.M.Tang, K.W.
AT

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.
AT

Other research lines

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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