JR

Josephine Ras

Ingenieure d'études CNRS
44
Documents

Compétences

Chimie analytique marine HPLC UV/vis UHPLC Pigments Phytoplanctoniques

Publications

Publications

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Seasonality of amino acid enantiomers and microbial communities at MOLA time series in the NW Mediterranean Sea

Anabel von Jackowski , Quentin-Boris Barral , Nawal Bouchachi , Barbara Marie , Olivier Crispi et al.
Organic Geochemistry, In press, ⟨10.1016/j.orggeochem.2024.104839⟩
Article dans une revue hal-04677811 v1
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Characterization of Bio‐Optical Anomalies in the Kerguelen Region, Southern Indian Ocean: A Study Based on Shipborne Sampling and BioGeoChemical‐Argo Profiling Floats

J. Uitz , C. Roesler , E. Organelli , H. Claustre , C. Penkerc'H et al.
Journal of Geophysical Research. Oceans, 2023, 128 (12), ⟨10.1029/2023JC019671⟩
Article dans une revue hal-04362574 v1
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Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom

Philippe Massicotte , Rémi Amiraux , Marie-Pier Amyot , Philippe Archambault , Mathieu Ardyna et al.
Earth System Science Data : Papers in open discussion, 2020, 12 (1), pp.151-176. ⟨10.5194/essd-12-151-2020⟩
Article dans une revue hal-02292721 v1
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Environmental drivers of under-ice phytoplankton bloom dynamics in the Arctic Ocean

Mathieu Ardyna , C.J. Mundy , Matthew M. Mills , Laurent Oziel , Pierre-Luc Grondin et al.
Elementa: Science of the Anthropocene, 2020, 8 (1), pp.30. ⟨10.1525/elementa.430⟩
Article dans une revue hal-03095648 v1
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Hydrography and biogeochemistry dedicated to the Mediterranean BGC-Argo network during a cruise with RV <em>Tethys 2</em> in May 2015

Vincent Taillandier , Thibaut Wagener , Fabrizio d'Ortenzio , Nicolas Mayot , Hervé Le Goff et al.
Earth System Science Data, 2018, 10 (1), pp.627 - 641. ⟨10.5194/essd-10-627-2018⟩
Article dans une revue hal-01832247 v1
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Silicon cycle in the tropical South Pacific: contribution to the global Si cycle and evidence for an active pico-sized siliceous plankton

Karine Leblanc , Veronique Cornet , Peggy Rimmelin-Maury , Olivier Grosso , Sandra Helias Nunige et al.
Biogeosciences, 2018, 15 (18), pp.5595-5620. ⟨10.5194/bg-15-5595-2018⟩
Article dans une revue hal-01889901 v1
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Recommendations for obtaining unbiased chlorophyll estimates from in situ chlorophyll fluorometers: A global analysis of WET Labs ECO sensors

Collin Roesler , Julia Uitz , Hervé Claustre , Emmanuel Boss , Xiaogang Xing et al.
Limnology and Oceanography: Methods, 2017, ⟨10.1002/lom3.10185⟩
Article dans une revue hal-01520511 v1

Effect of sunlight on prokaryotic organic carbon uptake and dynamics of pigments relevant to photoheterotrophy in the Adriatic Sea

Mauro Celussi , Alessandra A. Gallina , Josephine Ras , Michele Giani , Paola del Negro
Aquatic Microbial Ecology, 2015, 74 (3), pp.235-249. ⟨10.3354/ame01738⟩
Article dans une revue hal-03502746 v1
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Retrieving the vertical distribution of chlorophyll a concentration and phytoplankton community composition from in situ fluorescence profiles: A method based on a neural network with potential for global-scale applications

Raphaëlle Sauzède , Hervé Claustre , C. Jamet , Julia Uitz , Josephine Ras et al.
Journal of Geophysical Research. Oceans, 2015, 120 (1), pp.451-470. ⟨10.1002/2014JC010355⟩
Article dans une revue istex hal-03502751 v1
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Pigments, elemental composition (C, N, P, and Si), and stoichiometry of particulate matter in the naturally iron fertilized region of Kerguelen in the Southern Ocean

M. Lasbleiz , Karine Leblanc , S. Blain , J. Ras , Veronique Cornet et al.
Biogeosciences, 2014, 11 (20), pp.5931-5955. ⟨10.5194/bg-11-5931-2014⟩
Article dans une revue hal-01664909 v1
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The characteristics of particulate absorption, scattering and attenuation coefficients in the surface ocean; Contribution of the Tara Oceans expedition

Emmanuel Boss , Marc Picheral , Thomas Leeuw , Alison Chase , Eric Karsenti et al.
Methods in Oceanography, 2013, 7, pp.52-62. ⟨10.1016/j.mio.2013.11.002⟩
Article dans une revue insu-03190095 v1
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The MAREDAT global database of high performance liquid chromatography marine pigment measurements

J. Peloquin , C. Swan , N. Gruber , M. Vogt , Hervé Claustre et al.
Earth System Science Data, 2013, 5 (1), pp.109-123. ⟨10.5194/essd-5-109-2013⟩
Article dans une revue insu-03463361 v1
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Decomposition of in situ particulate absorption spectra

Alison Chase , Emmanuel Boss , Ronald Zaneveld , Annick Bricaud , Hervé Claustre et al.
Methods in Oceanography, 2013, 7, pp.110-124. ⟨10.1016/j.mio.2014.02.002⟩
Article dans une revue hal-04110592 v1

Quenching correction for in vivo chlorophyll fluorescence acquired by autonomous platforms: a case study with instrumented elephant seals in the Kerguelen region (Southern Ocean)

Xiaogang Xing , Hervé Claustre , Stéphane Blain , Fabrizio d'Ortenzio , David Antoine et al.
Limnology and Oceanography: Methods, 2012, 10, pp.483-495. ⟨10.4319/lom.2012.10.483⟩
Article dans une revue hal-00707656 v1

DMS dynamics in the most oligotrophic subtropical zones of the global ocean

Sauveur Belviso , I. Masotti , A. Tagliabue , Laurent Bopp , Patrick Brockmann et al.
Biogeochemistry, 2012, Special Issue of the 5th International Symposium on Biological and Environmental Chemistry of DMS(P) and Related Compounds, Goa, India, 19-22 October 2010, 110 (1-3), pp.215-241. ⟨10.1007/s10533-011-9648-1⟩
Article dans une revue istex hal-00757679 v1
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Ecology of aerobic anoxygenic phototrophic bacteria along an oligotrophic gradient in the Mediterranean Sea

D. Lamy , Christian Jeanthon , M. T. Cottrell , D. L. Kirchman , France van Wambeke et al.
Biogeosciences, 2011, 8, pp.973-985. ⟨10.5194/bg-8-973-2011⟩
Article dans une revue hal-00697622 v1
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From the shape of the vertical profile of in vivo fluorescence to Chlorophyll-a concentration

A. Mignot , Hervé Claustre , F. d'Ortenzio , X. Xing , A. Poteau et al.
Biogeosciences, 2011, 8 (8), pp.2391-2406. ⟨10.5194/bg-8-2391-2011⟩
Article dans une revue hal-02168184 v1
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Is the distribution of Prochlorococcus and Synechococcus ecotypes in the Mediterranean Sea affected by global warming?

Daniella Mella-Flores , S. Mazard , Florian Humily , Frédéric Partensky , Frédéric Mahé et al.
Biogeosciences, 2011, 8 (9), pp.2785-2804. ⟨10.5194/bg-8-2785-2011⟩
Article dans une revue hal-01218507 v1
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Seasonal dynamics of aerobic anoxygenic phototrophs in a Mediterranean coastal lagoon

D Lamy , P de Carvalho-Maalouf , M. T. Cottrell , Raphaël Lami , P. Catala et al.
Aquatic Microbial Ecology, 2011, 62 (2), pp.153-163. ⟨10.3354/ame01467⟩
Article dans une revue hal-02906986 v1
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Characterization of the bio-optical anomaly and diurnal variability of particulate matter, as seen from scattering and backscattering coefficients, in ultra-oligotrophic eddies of the Mediterranean Sea

Hubert Loisel , Vincent Vantrepotte , K. Norkvist , Xavier Meriaux , M. Kheireddine et al.
Biogeosciences, 2011, Special Issue : Interactions between planktonic organisms and the biogeochemical cycles of biogenic elements in the Mediterranean Sea during intense summer stratification: the BOUM experiment, 8 (11), pp.3295-3317. ⟨10.5194/bg-8-3295-2011⟩
Article dans une revue hal-00688006 v1
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Deep silicon maxima in the stratified oligotrophic Mediterranean Sea.

Y. Crombet , Karine Leblanc , Bernard Queguiner , T. Moutin , Peggy Rimmelin et al.
Biogeosciences, 2011, 8, pp.459-475. ⟨10.5194/bg-8-459-2011⟩
Article dans une revue hal-00700258 v1

Methyl mercury distributions in relation to the presence of nano- and picophytoplankton in an oceanic water column (Ligurian Sea, North-western Mediterranean)

Lars-Eric Heimbürger-Boavida , Daniel Cossa , Jean-Claude Marty , Christophe Migon , Bernard Averty et al.
Geochimica et Cosmochimica Acta, 2010, 74 (19), pp.5549-5559. ⟨10.1016/j.gca.2010.06.036⟩
Article dans une revue hal-02163124 v1
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Light absorption properties and absorption budget of Southeast Pacific waters

Annick Bricaud , Marcel Babin , Hervé Claustre , Josephine Ras , Fanny Tieche
Journal of Geophysical Research. Oceans, 2010, 115, ⟨10.1029/2009JC005517⟩
Article dans une revue istex hal-03502060 v1

Bacteriochlorophyll and community structure of aerobic anoxygenic phototrophic bacteria in a particle-rich estuary

Matthew T. Cottrell , Josephine Ras , David L. Kirchman
The International Society of Microbiologial Ecology Journal, 2010, 4 (7), pp.945-954. ⟨10.1038/ismej.2010.13⟩
Article dans une revue hal-03502064 v1
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Distribution of free-living and particle-attached aerobic anoxygenic phototrophic bacteria in marine environments

Raphaël Lami , Z Âuperová , J. Ras , P. Lebaron , M Koblíïek
Aquatic Microbial Ecology, 2009, 55, pp.31-38. ⟨10.3354/ame01282⟩
Article dans une revue hal-02906984 v1
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Spatial variability of phytoplankton pigment distributions in the Subtropical South Pacific Ocean: comparison between in situ and predicted data

J. Ras , Hervé Claustre , J. Uitz
Biogeosciences, 2008, 5 (2), pp.353-369
Article dans une revue hal-00330697 v1

A phytoplankton class-specific primary production model applied to the Kerguelen Islands region (Southern Ocean)

Julia Uitz , Hervé Claustre , Brian Griffiths , Josephine Ras , Nicole Garcia et al.
Deep Sea Research Part I: Oceanographic Research Papers, 2008, 56, pp.541-560. ⟨10.1016/j.dsr.2008.11.006⟩
Article dans une revue istex hal-00390393 v1
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Biochemical characteristics and bacterial community structure of the sea surface microlayer in the South Pacific Ocean

I. Obernosterer , P. Catala , R. Lami , J. Caparros , J. Ras et al.
Biogeosciences, 2008, 5 (3), pp.693-705. ⟨10.5194/bg-5-693-2008⟩
Article dans une revue hal-01248038 v1
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The "neutral" community structure of planktonic herbivores, tintinnid ciliates of the microzooplankton, across the SE Tropical Pacific Ocean

John R. Dolan , M. E. Ritchie , J. Ras
Biogeosciences, 2007, 4 (3), pp.297-310. ⟨10.5194/bg-4-297-2007⟩
Article dans une revue hal-00330319 v1

Validation of MERIS reflectance and chlorophyll during the BENCAL cruise October 2002: preliminary validation of new demonstration products for phytoplankton functional types and photosynthetic parameters

J. Aiken , J. R. Fishwick , S. Lavender , R. Barlow , G. F. Moore et al.
INTERNATIONAL JOURNAL OF REMOTE SENSING, 2007, 28 (3-4), pp.497-516. ⟨10.1080/01431160600821036⟩
Article dans une revue hal-03504955 v1

Optical properties of the ``clearest'' natural waters

Andre Morel , Bernard Gentili , Hervé Claustre , Marcel Babin , Annick Bricaud et al.
Limnology and Oceanography, 2007, 52 (1), pp.217-229. ⟨10.4319/lo.2007.52.1.0217⟩
Article dans une revue hal-03504961 v1

Rapid growth rates of aerobic anoxygenic phototrophs in the ocean

Michal Koblizek , Michal Masin , Josephine Ras , Alex J. Poulton , Ondrej Prasil
Environmental Microbiology, 2007, 9 (10), pp.2401-2406. ⟨10.1111/j.1462-2920.2007.01354.x⟩
Article dans une revue istex hal-03504936 v1
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Spatial variability of phytoplankton pigment distributions in the Subtropical South Pacific Ocean: comparison between in situ and predicted data

J. Ras , Hervé Claustre , Julia Uitz
Biogeosciences Discussions, 2007, 4 (5), pp.3409-3451
Article dans une revue hal-00330270 v1
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The "neutral" community structure of planktonic herbivores, tintinnid ciliates of the microzooplankton, across the SE Tropical Pacific Ocean

J. R. Dolan , M. E. Ritchie , J. Ras
Biogeosciences Discussions, 2007, 4 (1), pp.561-593
Article dans une revue hal-00330231 v1

Functional relationships and bio-optical properties derived from phytoplankton pigments, optical and photosynthetic parameters; a case study of the Benguela ecosystem

James R. Fishwick , Jim Aiken , Ray Barlow , Heather Sessions , Stuart Bernard et al.
Journal of the Marine Biological Association of the United Kingdom, 2006, 86 (6), pp.1267-1280. ⟨10.1017/S0025315406014287⟩
Article dans une revue istex hal-03504966 v1

Bio-optical properties of high chlorophyll Case 1 waters and of yellow-substance-dominated Case 2 waters

Andre Morel , Bernard Gentili , Malik Chami , Josephine Ras
Deep Sea Research Part I: Oceanographic Research Papers, 2006, 53 (9), pp.1439-1459. ⟨10.1016/j.dsr.2006.07.007⟩
Article dans une revue istex hal-03494176 v1
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Spatial distribution of heterotrophic bacteria in the northeast Atlantic (POMME study area) during spring 2001

Melilotus Thyssen , Dominique Lefèvre , Guy Caniaux , Josephine Ras , Camila I. Fernandez et al.
Journal of Geophysical Research, 2005, 110, pp.C07S16-16. ⟨10.1029/2004JC002670⟩
Article dans une revue istex hal-00092675 v1
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A seasonal study of diatom dynamics in the North Atlantic during the POMME experiment (2001): Evidence for Si limitation of the spring bloom

Karine Leblanc , Aude Leynaert , C. Fernandez , P. Rimmelin , Thierry Moutin et al.
Journal of Geophysical Research. Oceans, 2005, 110, pp.C07S14. ⟨10.1029/2004JC002621⟩
Article dans une revue istex hal-00455625 v1
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Mesoscale and seasonal variability of community production and respiration in the surface waters of the N.E. Atlantic Ocean

Anne Maixandeau , Dominique Lefèvre , Camila I. Fernandez , Richard Sempere , Rumi Sohrin et al.
Deep-sea research. Part A, Oceanographic research papers, 2005, 52 (9), pp.1663-1676. ⟨10.1016/j.dsr.2005.03.007⟩
Article dans une revue hal-00092707 v1
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Toward a taxon-specific parameterization of bio-optical models of primary production: A case study in the North Atlantic

Hervé Claustre , Marcel Babin , Davy Merien , Josephine Ras , Louis Prieur et al.
Journal of Geophysical Research, 2005, 110 (C7), ⟨10.1029/2004JC002634⟩
Article dans une revue hal-02179249 v1
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Natural variability of phytoplanktonic absorption in oceanic waters: Influence of the size structure of algal populations

Annick Bricaud , Hervé Claustre , Josephine Ras , Kadija Oubelkheir
Journal of Geophysical Research. Oceans, 2004, 109 (C11), ⟨10.1029/2004JC002419⟩
Article dans une revue hal-03506663 v1
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Availability of iron and major nutrients for phytoplankton in the northeast Atlantic Ocean

Stéphane Blain , Cécile Guieu , Hervé Claustre , Karine Leblanc , T. Moutin et al.
Limnology and Oceanography, 2004, 49 (6), pp.2095-2104. ⟨10.4319/lo.2004.49.6.2095⟩
Article dans une revue hal-00702539 v1