Adapting to a Changing Ocean
How do key functional groups of plankton adapt to chemical changes in oceans and how does this affect biochemical cycles?
20 Publications
14 Researchers

The strong and dynamic horizontal chemical gradients in the southeastern Pacific (SEP), from ultra-oligotrophic waters to coastal upwelling, exhibit highly variable combinations of low O2 and pH/high pCO2 and include strong vertical changes in 02 concentrations, from saturation levels at the surface to undetectable levels in the nucleus of minimum oxygen zone (MOZ). For fieldwork, our Institute will conduct observations and experiments during expeditions. In situ estimations will be made of physiological/metabolic rates and communities, gene expression and particle flows (in particular associated with the carbon cycle, which in minimum oxygen zones is relatively unknown). As well, culture-independent genomic analysis of representative species will allow for putting to the test the associations between genomic and physiological variations. The composition and functioning of the communities will be analyzed and compared to the genomic population among the specific representatives of functional plankton groups.

Leaders

Researchers

Publications

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 | Pages 1-9
doi:10.1017/S0025315416001570
Jacob, B.Von Dassow, P.Salisbury, J.Navarro, J.Vargas, C.A.

First measurements of euphausiid growth rates in the northern Humboldt Current (23ºS)

Revista de Biología Marina y Oceanografía | Volume 51, Issue 2, Pages 435-440
doi:10.4067/S0718-19572016000200020

Seasonal dynamics of zooplankton in a northern Chile bay exposed to upwelling conditions

Revista de Biología Marina y Oceanografía | Volume 51, Issue 2, Pages 273-291
doi:10.4067/S0718-19572016000200006
Torreblanca, M.L.Pérez-Santos, I.San Martin, B.Varas, E.Zilleruelo, R.Riquelme-Bugueño, R.Palma, A.T.

P- and N-starvation trigger the same cellular responses to promote senescence in eukaryotic phytoplankton

Frontiers in Marine Science | Volume 3, Issue 109, Pages 1-13
doi:10.3389/fmars.2016.00109
Rokitta, S.D.Von Dassow, P.Rost, B.John, U.

Recent reticulate evolution in the ecologically dominant lineage of coccolithophores

Frontiers in Microbiology | Volume 7, Page 784
doi:10.3389/fmicb.2016.00784

Identification of the meiotic toolkit in diatoms and exploration of meiosis-specific SPO11 and RAD51 homologs in the sexual species Pseudo-nitzschia multistriata and Seminavis robusta

BMC Genomics | Volume 16, Page 930
doi:10.1186/s12864-015-1983-5
Patil, S.Moeys, S.Von Dassow, P.Huysman, M.J.J. Mapleson, D.De Veylder, L.Sanges, R.Vyverman, W.Montresor, M.Ferrante, M.I.

The influence of anoxia and substrate availability on N2O cycling by denitrification in the upper boundary of the oxygen minimum zone off northern Chile

Journal of Marine Research | Volume 73, Issue 6, Pages 185-205
doi:10.1357/002224015817391285
Castro-González, M.Farías, L.

Electrophoretic protein profiles of mid-sized copepod Calanoides patagoniensis steadily fed bloom-forming diatoms

Latin American Journal of Aquatic Research | Volume 43, Issue 4, Pages 798-806
doi:10.3856/vol43-issue4-fulltext-20
Aguilera, V.M.Escribano, R.Martínez-Oyanedel, J.

Morphological and Phylogenetic Characterization of New Gephyrocapsa Isolates Suggests Introgressive Hybridization in the Emiliania/Gephyrocapsa Complex (Haptophyta)

Protist | Volume 166, Issue 3, Pages 323-336
doi:10.1016/j.protis.2015.05.003
Bendif, E.M.Probert, I.Young, J.R.Von Dassow, P.

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.12282
Aguilera, V.M.Vargas, C.A.Lardies, A.M.Poupin, M.

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:10.1002/2014JG002699
Pérez, C.A.DeGrandpre, M.D.Lagos, N.A.Saldías, G.S.Karin-Cascales, E.Vargas, C.A.

Genomic potential for nitrogen assimilation in uncultivated members of Prochlorococcus from an anoxic marine zone

ISME Journal | Volume 9, Pages 1264-1267
doi:10.1038/ismej.2015.21
Astorga-Eló, M.Ramírez-Flandes, S.DeLong, E.F.Ulloa, O.

Structure of denitrifying communities reducing N2O at suboxic waters off northern Chile and Perú

Revista de Biología Marina y Oceanografía | Volume 50, Issue 1, Pages 95-110
doi:10.4067/S0718-19572015000100008
Castro-González, M.Ulloa, O.Farías, L.

Life-cycle modification in open oceans accounts for genome variability in a cosmopolitan phytoplankton

ISME Journal | Volume 9, Pages 1365-1377
doi:10.1038/ismej.2014.221
Von Dassow, P.Johns, U.Ogata, H.Probert, I.Mahdi Bendif, E.Kegel, U.J.Audic, S.Da Silva, C.Claverie, J.M.Doney, S.Glover, D.M.Herrera, Y.Lescot, M.Garet-Delmas, M.L.De Vargas, C.

Egg production and hatching success of Calanus chilensis and Acartia tonsa in the northern Chile upwelling zone (23°S), Humboldt Current System

Journal of Marine Systems | Volume 148, Pages 200-212
doi:10.1016/j.jmarsys.2015.03.007

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

Emiliania huxleyi endures N-limitation with anefficient metabolic budgeting and effectiveATP synthesis

BMC Genomics | Volume 15, Page 1051
doi:10.1186/1471-2164-15-1051
Rokitt, S. D.Von Dassow, P.Rost, B.John, U.

Biological oceanography, biogeochemical cycles, and pelagic ecosystem functioning of the east-central South Pacific Gyre: Focus on Easter Island and Salas-y-Gómez

Latin American Journal of Aquatic Research | Volume 42, Pages 703-742
doi:10.3856/vol42-issue4-fulltext-4
Von Dassow, P.Collado-Fabbri, S.

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/s12237-014-9873-7
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.

Alteration of sexual reproduction and genetic diversity in the kelp species Laminaria digitata at the southern limit of its range

PLOS One | Volume 9, Issue 7, Pages 1-11
doi:10.1371/journal.pone.0102518
Oppliger, LVon Dassow, P.Bouchemousse, SValero, M.Correa, J.Auger, P.Destombe, C.

Other research lines

Universidad de ConcepciónPontificia Universidad Católica de ChileIniciativa Científica MilenioIniciativa Científica Milenio
IMO 2015 - Dirección: Los Tilos 1134, Barrio Universitario, Concepción. - Fono: +56 (34) 2312647 - Correo: contacto@imo-chile.cl