Cristian Vargas, PhD.

Associate Researcher @ IMO
Associate Professor @ UDEC

Contact

crvargas@udec.cl
orcID

Roles

Associate Researcher @ IMO

Education

Doctor in Oceanography @ UDEC

Biography

Dr. Cristian Vargas (Chile, 1972) obtained his doctorate in Oceanography from the Universidad de Concepción in 2002 thanks to his thesis on plankton communities in the ecosystems of the fjords of northwestern Sweden and their role in carbon flows. As a member of the Faculty of Environmental Sciences of the Universidad de Concepción, Dr. Vargas has been interested in the area of biological oceanography, aquatic ecosystem metabolism, plankton ecology, biogeochemical cycles and local and global anthropogenic impacts on ecosystems.

Another of Dr. Vargas's interests is the oceanic acidification, which has led him since 2009 to be involved in several programs (Anillos ACT132) and international committees related to the issues. His most important contribution to oceanography is pioneering studies at the level of continent of South America that associate observational field work with laboratory experiments on micro- and mesocosms with multiples stressors.

His main contribution to the Millennium Institute of Oceanography is in the area of the biogeochemistry and the effect of multiple stressors, such as temperature, oxygen and pCO2 on plankton communities..

Dr. Vargas directs the Laboratory of Aquatic Ecosystem Functioning of the Environmental Sciences Faculty. Thanks to the IMO this laboratory recently acquired the necessary equipment for high-standard characterization of the carbonate system of seawater samples (pH, dissolved inorganic carbon, alkalinity, etc.).

In parallel with his research work, Dr. Vargas is the Director of the Center for the study of multiple-drivers on marine socio-ecological systems (MUSELS), NC120086″.

Students

Tutor of

Enrique Ascencio

Master in Science mention Oceanography @ UDEC
Ascencio, E.

Edson Piscoya

@ UDEC
Piscoya, E.

Publications

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

Vargas, C.A.Sepúlveda, J.De Pol-Holz, R.Schneider, W.Cornejo, M.Cantarero, S.Galán, A.Farias, L.........,
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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

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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 | Volume 125, Pages 1-17

doi:10.1029/2020JG005704November, 2020

Vargas, C.A.Aguilera, V.M.Dewitte, B.
AT

Size-Fractionated Contribution of Microbial Biomass to Suspended Organic Matter in the Eastern Tropical South Pacific Oxygen Minimum Zone

Frontiers in Marine Science | Volume 7, Pages 1-20

doi:10.3389/fmars.2020.540643October, 2020

Cantarero, S.Henríquez, C.Dildar, N.Vargas, C.A.Von Dassow, P.Cornejo, M.Sepúlveda, J.
AT

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

Riquelme-Bugueño, R.Pérez-Santo, I.Alegría, N.Urbina, M.Escribano, R.Vargas, C.A.
AT

Carbonate chemistry dynamics in shellfish farming areas along the Chilean coast: natural ranges and biological implications

ICES Journal of Marine Science

doi:10.1093/icesjms/fsaa127September, 2020

Saavedra, L.MSaldías, G.SBroitman, B.RVargas, C.A.
A

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

Frontiers in Marine Science | Volume 7, Pages 1-21

doi:10.3389/fmars.2020.00323May, 2020

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

Environmental costs of water transfers

Nature Sustainability | Volume 3, Pages 408-409

doi:10.1038/s41893-020-0526-5April, 2020

Vargas, C.A.Garreaud, R.Barra, R.Vásquez-Lavin, F.Saldías, G.SParra, O.
A

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

Scientific Reports | Volume 10, Pages 1-12

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

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

Greenhouse gases, nutrients and the carbonate system in the Reloncaví Fjord (Northern Chilean Patagonia): Implications on aquaculture of the mussel, Mytilus chilensis, during an episodic volcanic eruption

Science of The Total Environment | Volume 669, Pages 49-61

doi:10.1016/j.scitotenv.2019.03.037June, 2019

Yevenes, M.A.Lagos, N.A.Farías, L.Vargas, C.A.
A

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

Interplay between freshwater discharge and oceanic waters modulates phytoplankton size-structure in fjords and channel systems of the Chilean Patagonia

Progress in Oceanography | Volume 173, Pages 103-113

doi:10.1016/j.pocean.2019.02.012April, 2019

Cuevas, L.A.Tapia, F.J.Iriarte, J.L.González, H.E.Silva, N.Vargas, C.A.
A

Linking social preferences and ocean acidification impacts in mussel aquaculture

Scientific Reports | Volume 9, Article 4719

doi:10.1038/s41598-019-41104-5March, 2019

San Martín, V.A.Gelcich, S.Vásquez-Lavín, F.Ponce, R.D.Hernández, J.I.Lagos, N.Birchenough, S.N.R.Vargas, C.A.
A

Upwelling modulation of functional traits of a dominant planktonic grazer during "warm-acid" El Niño 2015 in a year-round upwelling area of Humboldt Current.

PLOS One | Volume 14, Issue 1, Article e0209823

doi:10.1371/journal.pone.0209823January, 2019

Aguilera, V.M.Escribano, R.Vargas, C.A.González, M.T.
A

The energetic physiology of juvenile mussels, Mytilus chilensis (Hupe): The prevalent role of salinity under current and predicted pCO2 scenarios

Environmental Pollution | Volume 242, Pages 156-163

doi:10.1016/j.envpol.2018.06.053November, 2018

Duarte, C.Navarro, J.M.Quijón, P.A.Loncon, D.Torres, R.Manríquez, P.H.Lardies, M.A.Vargas, C.A.Lagos, N.A.
A

Low spring primary production and microplankton carbon biomass in Sub-Antarctic Patagonian channels and fjords (50-53ºS)

Arctic, Antarctic, and Alpine Research | Volume 50, Issue 01, Article e1525186

doi:10.1080/15230430.2018.1525186October, 2018

Iriarte, J.LCuevas, L.A.Cornejo, F.Silva, N.González, H.E.Castro, L.Montero, P.Vargas, C.A.Daneri, G.
A

Transgenerational effects of pCO2-driven ocean acidification on adult mussels Mytilus chilensis modulate physiological response to multiple stressors in larvae

Frontiers in Physiology | Volume 9, Article 1349

doi:10.3389/fphys.2018.01349October, 2018

Díaz, R.Lardies, M.A.Tapia, F.J.Tarifeño, E.Vargas, C.A.
A

Local habitat influences on feeding and respiration of the intertidal mussels Perumytilus purpuratus exposed to increased pCO2 levels

Estuaries and Coasts | Volume 41, Issue 4, Pages 1118-1129

doi:10.1007/s12237-017-0333-zJune, 2018

Saavedra, L.M. Parra, D.San Martin, V.Lagos, N.A. Vargas, C.A.
A

Influence of glacier melting and river discharges on the nutrient distribution and DIC recycling in the Southern Chilean Patagonia

Journal of Geophysical Research: Biogeosciences | Volume 123, Issue 1, Pages 256-270

doi:10.1002/2017JG003907January, 2018

Vargas, C.A.Cuevas, L.A.Silva, N.González, H.E.De Pol-Holz, R.Narváez, D.A.
A

Ocean acidification and pathogen exposure modulate the immune response of the edible mussel Mytilus chilensis

Fish and Shellfish Immunology | Volume 70, Pages 149-155

doi:10.1016/j.fsi.2017.08.047November, 2017

Castillo, N.Saavedra, L.M.Vargas, C.A.Gallardo-Escárate, C.Détrée, C.
A

Physiological and histopathological impacts of increased carbon dioxide and temperature on the scallops Argopecten purpuratus cultured under upwelling influences in northen Chile

Aquaculture | Volume 479, Pages 455-466

doi:10.1016/j.aquaculture.2017.06.008October, 2017

Lardies, M.A.Benitez, S.Osores, S.Vargas, C.A.Duarte, C.Lohrmann, K.B.Lagos, N.
A

Species-specific responses to ocean acidification should account for local adaptation and adaptive plasticity

Nature Ecology & Evolution | Volume 1, Article 0084

doi:10.1038/s41559-017-0084March, 2017

Vargas, C.A.Lagos, N.A.Lardies, M.A.Duarte, C.Manríquez, P.H.Aguilera, V.M.Broitman, B.Widdicombe, S.Dupont, S.
A

Impact of low pH/high pCO2 on the physiological response and fatty acid content in diatom Skeletonema pseudocostatum

Journal of the Marine Biological Association of the United Kingdom | Volume 97, Issue 2, Pages 225-233

doi:10.1017/S0025315416001570March, 2017

Jacob, B.Von Dassow, P.Salisbury, J.Navarro, J.Vargas, C.A.
A

Carbon flow through the pelagic food web in southern Chilean Patagonia: relevance of Euphausia vallentini as a key species

Marine Ecology Progress Series | Volume 557, Pages 91-110

doi:10.3354/meps11826September, 2016

González, H.E.Graeve, M.Kattner, G.Silva, N.Castro, L.Iriarte, J.L.Osmán, L.Daneri, G.Vargas, C.A.

Satellite-measured interannual variability of turbid river plumes off central-southern Chile: Spatial patterns and the influence of climate variability

Progress in Oceanography | Volume 146, Pages 212-222

doi:10.1016/j.pocean.2016.07.007July, 2016

Saldías, G.Largier, J.Mendes, R.Pérez Santos, I.Vargas, C.A.Sobarzo, M.

Influences of riverine and upwelling waters on the coastal carbonate system off Central Chile and their ocean acidification implications

Journal of Geophysical Research: Biogeosciences | Volume 121, Issue 6, Pages 1468-1483

doi:10.1002/2015JG003213June, 2016

Vargas, C.A.Contreras, P.Pérez, C.Sobarzo, M.Saldías, G.Salisbury, J.

Effects of temperature and ocean acidification on shell characteristics of Argopecten purpuratus: implications for scallop aquaculture in an upwelling-influenced area

Aquaculture Environment Interactions | Volume 8, Pages 357-370

doi:10.3354/aei00183May, 2016

Lagos, N. A.Benítez, S.Duarte, C.Lardies, M. A.Broitman, B. R.Tapia, C.Tapia, P.Widdicombe, S.Vargas, C.A.

Riverine discharges impact physiological traits and carbon sources for shell carbonate in the marine intertidal mussel Perumytilus purpuratus

Limnology and Oceanography | Volume 61, Issue 3, Pages 969-983

doi:10.1002/lno.10265March, 2016

Pérez , C.A.Lagos, N. A.Saldías , G. S.Waldbusser, G.Vargas, C.A.

CO2-driven ocean acidification disrupts the filter feeding behavior in chilean gastropod and bivalve species from different geographic localities

Estuaries and Coasts | Volume 38, Issue 4, Pages 1163-1177

doi:10.1007/s12237-014-9873-7July, 2015

Vargas, C.A.Aguilera, V.M.San Martín, V.Manríquez, P.H.Navarro, J.M.Duarte, C.Torres, R.Lardies, M.A.Lagos, N.A.
A

Adaptive variability to low-pH river discharges in Acartia tonsa and stress responses to high PCO2 conditions

Marine Ecology-An Evolutionary Perspective | Volume 37, Issue 1, Pages 215-226

doi:10.1111/maec.12282April, 2015

Aguilera, V.M.Vargas, C.A.Lardies, A.M.Poupin, M.
A

Influence of climate and land use in carbon biogeochemistry in lower reaches of rivers in central southern Chile: Implications for the carbonate system in river-influenced rocky shore environments

Journal of Geophysical Research: Biogeosciences | Volume 120, Issue 4, Pages 673-692

doi:10.1002/2014JG002699April, 2015

Pérez, C.A.DeGrandpre, M.D.Lagos, N.A.Saldías, G.S.Karin-Cascales, E.Vargas, C.A.
A

Intraspecific variability in the response of the edible mussel Mytilus chilensis (Hupe) to ocean acidification

Estuaries and Coasts | Volume 38, Issue 2, Pages 590-598

doi:10.1007/s12237-014-9845-yMarch, 2015

Duarte, C.Navarro, J.M.Acuña, K.Torres, R.Lardies, M.A.Vargas, C.A.Lagos, A.N.Aguilera, V.M.
A

Contribution of allochthonous organic carbon across the Serrano River Basin and the adjacent fjord system in Southern Chilean Patagonia: insights from the combined use of stable isotope and fatty acid biomarkers

Progress in Oceanography | Volume 129, Pages 98-113

doi:10.1016/j.pocean.2014.03.004December, 2014

Lafon, A.Silva, N.Vargas, C.A.

Hypoxia in Chilean Patagonian Fjords

Progress in Oceanography | Volume 129, Pages 62-74

doi:10.1016/j.pocean.2014.05.016December, 2014

Silva, N.Vargas, C.A.
A

Effects of ocean acidification on developing and early post hatching larval traits of Concholepas concholepas (loco)

Marine Ecology Progress Series | Volume 514, Pages 87-103

doi:10.3354/meps10951November, 2014

Manríquez, P.H.Jara, M.E.Torres, R.Mardones, M.L.Lagos, N.A.Lardies, M.A.Vargas, C.A.Duarte, C.Navarro, J.M.

Ocean acidification affects predator avoidance behavior but not prey detection in the early ontogeny of a keystone species

Marine Ecology Progress Series | Volume 502, Pages 157-167

doi:10.3354/meps10703April, 2014

Manríquez, P.H.Jara, M.E.Mardones, M.L.Torres, R.Navarro, J.M.Lardies, M.A.Vargas, C.A.Duarte, C.Lagos, N.A.
A

Combined effects of temperature and ocean acidification on the juvenile individuals of the mussel Mytilus chilensis

Journal of Sea Research | Volume 85, Pages 308-314

doi:10.1016/j.seares.2013.06.002January, 2014

Duarte, C.Navarro, J.M.Acuña, K.Torres, R.Manríquez, P.H.Lardies, M.A.Vargas, C.A.Lagos, N.A.Aguilera, V.M.
A
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First LAOCA Network Symposium on Ocean Acidification to Take Place in Buenos Aires

The first Latin-American Symposium held by the LAOCA Network on ocean acidification will take place in Buenos Aires, Argentina, from October 24- 26, 2017.

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