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3. Marine DNA Viral Macro- and Microdiversity from Pole to Pole

Author

Gregory, Ann C, Zayed, Ahmed A, Conceição-Neto, Nádia, Temperton, Ben, Bolduc, Ben, Alberti, Adriana, Ardyna, Mathieu, Arkhipova, Ksenia, Carmichael, Margaux, Cruaud, Corinne, Dimier, Céline, Domínguez-Huerta, Guillermo, Ferland, Joannie, Kandels, Stefanie, Liu, Yunxiao, Marec, Claudie, Pesant, Stéphane, Picheral, Marc, Pisarev, Sergey, Poulain, Julie, Tremblay, Jean-Éric, Vik, Dean, Coordinators, Tara Oceans, Acinas, Silvia G, Babin, Marcel, Bork, Peer, Boss, Emmanuel, Bowler, Chris, Cochrane, Guy, de Vargas, Colomban, Follows, Michael, Gorsky, Gabriel, Grimsley, Nigel, Guidi, Lionel, Hingamp, Pascal, Iudicone, Daniele, Jaillon, Olivier, Kandels-Lewis, Stefanie, Karp-Boss, Lee, Karsenti, Eric, Not, Fabrice, Ogata, Hiroyuki, Poulton, Nicole, Raes, Jeroen, Sardet, Christian, Speich, Sabrina, Stemmann, Lars, Sullivan, Matthew B, Sunagawa, Shinichi, Wincker, Patrick, Culley, Alexander I, Dutilh, Bas E, and Roux, Simon

Subjects
Genetics, Infection, Life Below Water, Aquatic Organisms, Biodiversity, DNA Viruses, DNA, Viral, Metagenome, Water Microbiology, Tara Oceans Coordinators, community ecology, diversity gradients, marine biology, metagenomics, population ecology, species, viruses, Biological Sciences, Medical and Health Sciences, Developmental Biology
Abstract

Microbes drive most ecosystems and are modulated by viruses that impact their lifespan, gene flow, and metabolic outputs. However, ecosystem-level impacts of viral community diversity remain difficult to assess due to classification issues and few reference genomes. Here, we establish an ∼12-fold expanded global ocean DNA virome dataset of 195,728 viral populations, now including the Arctic Ocean, and validate that these populations form discrete genotypic clusters. Meta-community analyses revealed five ecological zones throughout the global ocean, including two distinct Arctic regions. Across the zones, local and global patterns and drivers in viral community diversity were established for both macrodiversity (inter-population diversity) and microdiversity (intra-population genetic variation). These patterns sometimes, but not always, paralleled those from macro-organisms and revealed temperate and tropical surface waters and the Arctic as biodiversity hotspots and mechanistic hypotheses to explain them. Such further understanding of ocean viruses is critical for broader inclusion in ecosystem models.

Published
2019

5. Seafloor primary production in a changing Arctic Ocean

Author

Attard, Karl, primary, Singh, Rakesh Kumar, additional, Gattuso, Jean-Pierre, additional, Filbee-Dexter, Karen, additional, Krause-Jensen, Dorte, additional, Kühl, Michael, additional, Sejr, Mikael K., additional, Archambault, Philippe, additional, Babin, Marcel, additional, Bélanger, Simon, additional, Berg, Peter, additional, Glud, Ronnie N., additional, Hancke, Kasper, additional, Jänicke, Stefan, additional, Qin, Jing, additional, Rysgaard, Søren, additional, Sørensen, Esben B., additional, Tachon, Foucaut, additional, Wenzhöfer, Frank, additional, and Ardyna, Mathieu, additional

Published
2024
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6. Seafloor primary production in a changing Arctic Ocean

Author

Attard, Karl, Singh, Rakesh Kumar, Gattuso, Jean Pierre, Filbee-Dexter, Karen, Krause-Jensen, Dorte, Kühl, Michael, Sejr, Mikael K., Archambault, Philippe, Babin, Marcel, Bélanger, Simon, Berg, Peter, Glud, Ronnie N., Hancke, Kasper, Jänicke, Stefan, Qin, Jing, Rysgaard, Søren, Sørensen, Esben B., Tachon, Foucaut, Wenzhöfer, Frank, Ardyna, Mathieu, Attard, Karl, Singh, Rakesh Kumar, Gattuso, Jean Pierre, Filbee-Dexter, Karen, Krause-Jensen, Dorte, Kühl, Michael, Sejr, Mikael K., Archambault, Philippe, Babin, Marcel, Bélanger, Simon, Berg, Peter, Glud, Ronnie N., Hancke, Kasper, Jänicke, Stefan, Qin, Jing, Rysgaard, Søren, Sørensen, Esben B., Tachon, Foucaut, Wenzhöfer, Frank, and Ardyna, Mathieu

Abstract

Phytoplankton and sea ice algae are traditionally considered to be the main primary producers in the Arctic Ocean. In this Perspective, we explore the importance of benthic primary producers (BPPs) encompassing microalgae, macroalgae, and seagrasses, which represent a poorly quantified source of Arctic marine primary production. Despite scarce observations, models predict that BPPs are widespread, colonizing ~3 million km2 of the extensive Arctic coastal and shelf seas. Using a synthesis of published data and a novel model, we estimate that BPPs currently contribute ~77 Tg C y−1 of primary production to the Arctic, equivalent to ~20 to 35% of annual phytoplankton production. Macroalgae contribute ~43 Tg C y−1, seagrasses contribute ~23 Tg C y−1, and microalgae-dominated shelf habitats contribute ~11 to 16 Tg C y−1. Since 2003, the Arctic seafloor area exposed to sunlight has increased by ~47,000 km2 y−1, expanding the realm of BPPs in a warming Arctic. Increased macrophyte abundance and productivity is expected along Arctic coastlines with continued ocean warming and sea ice loss. However, microalgal benthic primary production has increased in only a few shelf regions despite substantial sea ice loss over the past 20 y, as higher solar irradiance in the ice-free ocean is counterbalanced by reduced water transparency. This suggests complex impacts of climate change on Arctic light availability and marine primary production. Despite significant knowledge gaps on Arctic BPPs, their widespread presence and obvious contribution to coastal and shelf ecosystem production call for further investigation and for their inclusion in Arctic ecosystem models and carbon budgets., Phytoplankton and sea ice algae are traditionally considered to be the main primary producers in the Arctic Ocean. In this Perspective, we explore the importance of benthic primary producers (BPPs) encompassing microalgae, macroalgae, and seagrasses, which represent a poorly quantified source of Arctic marine primary production. Despite scarce observations, models predict that BPPs are widespread, colonizing ~3 million km2 of the extensive Arctic coastal and shelf seas. Using a synthesis of published data and a novel model, we estimate that BPPs currently contribute ~77 Tg C y-1 of primary production to the Arctic, equivalent to ~20 to 35% of annual phytoplankton production. Macroalgae contribute ~43 Tg C y-1, seagrasses contribute ~23 Tg C y-1, and microalgae-dominated shelf habitats contribute ~11 to 16 Tg C y-1. Since 2003, the Arctic seafloor area exposed to sunlight has increased by ~47,000 km2 y-1, expanding the realm of BPPs in a warming Arctic. Increased macrophyte abundance and productivity is expected along Arctic coastlines with continued ocean warming and sea ice loss. However, microalgal benthic primary production has increased in only a few shelf regions despite substantial sea ice loss over the past 20 y, as higher solar irradiance in the ice-free ocean is counterbalanced by reduced water transparency. This suggests complex impacts of climate change on Arctic light availability and marine primary production. Despite significant knowledge gaps on Arctic BPPs, their widespread presence and obvious contribution to coastal and shelf ecosystem production call for further investigation and for their inclusion in Arctic ecosystem models and carbon budgets.

Published
2024

11. Pan-Arctic plankton community structure and its global connectivity

Author

Ibarbalz, Federico M., Henry, Nicolas, Mahe, Frédéric, Ardyna, Mathieu, Zingone, Adriana, Scalco, Eleonora, Lovejoy, Thomas E., Lombard, Fabien, Jaillon, Olivier, Iudicone, Daniele, Malviya, Shruti, Sullivan, Matthew B., Chaffron, Samuel, Karsenti, Eric, Babin, Marcel, Boss, Emmanuel, Wincker, Patrick, Zinger, Lucie, de Vargas, Colomban, Bowler, Chris, Karp-Boss, Lee, Ibarbalz, Federico M., Henry, Nicolas, Mahe, Frédéric, Ardyna, Mathieu, Zingone, Adriana, Scalco, Eleonora, Lovejoy, Thomas E., Lombard, Fabien, Jaillon, Olivier, Iudicone, Daniele, Malviya, Shruti, Sullivan, Matthew B., Chaffron, Samuel, Karsenti, Eric, Babin, Marcel, Boss, Emmanuel, Wincker, Patrick, Zinger, Lucie, de Vargas, Colomban, Bowler, Chris, and Karp-Boss, Lee

Abstract

The Arctic Ocean (AO) is being rapidly transformed by global warming, but its biodiversity remains understudied for many planktonic organisms, in particular for unicellular eukaryotes that play pivotal roles in marine food webs and biogeochemical cycles. The aim of this study was to characterize the biogeographic ranges of species that comprise the contemporary pool of unicellular eukaryotes in the AO as a first step toward understanding mechanisms that structure these communities and identifying potential target species for monitoring. Leveraging the Tara Oceans DNA metabarcoding data, we mapped the global distributions of operational taxonomic units (OTUs) found on Arctic shelves into five biogeographic categories, identified biogeographic indicators, and inferred the degree to which AO communities of unicellular eukaryotes share members with assemblages from lower latitudes. Arctic/Polar indicator OTUs, as well as some globally ubiquitous OTUs, dominated the detection and abundance of DNA reads in the Arctic samples. OTUs detected only in Arctic samples (Arctic-exclusives) showed restricted distribution with relatively low abundances, accounting for 10–16% of the total Arctic OTU pool. OTUs with high abundances in tropical and/or temperate latitudes (non-Polar indicators) were also found in the AO but mainly at its periphery. We observed a large change in community taxonomic composition across the Atlantic-Arctic continuum, supporting the idea that advection and environmental filtering are important processes that shape plankton assemblages in the AO. Altogether, this study highlights the connectivity between the AO and other oceans, and provides a framework for monitoring and assessing future changes in this vulnerable ecosystem.

Published
2023

16. Biogenic carbon flows through the planktonic food web of the Amundsen Gulf (Arctic Ocean): A synthesis of field measurements and inverse modeling analyses

Author

Forest, Alexandre, Tremblay, Jean-Éric, Gratton, Yves, Martin, Johannie, Gagnon, Jonathan, Darnis, Gérald, Sampei, Makoto, Fortier, Louis, Ardyna, Mathieu, Gosselin, Michel, Hattori, Hiroshi, Nguyen, Dan, Maranger, Roxane, Vaqué, Dolors, Marrasé, Cèlia, Pedrós-Alió, Carlos, Sallon, Amélie, Michel, Christine, Kellogg, Colleen, Deming, Jody, Shadwick, Elizabeth, Thomas, Helmuth, Link, Heike, Archambault, Philippe, and Piepenburg, Dieter

Published
2011
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17. Environmental vulnerability of the global ocean epipelagic plankton community interactome

Author

Chaffron, Samuel, Delage, Erwan, Budinich, Marko, Vintache, Damien, Henry, Nicolas, Nef, Charlotte, Ardyna, Mathieu, Zayed, Ahmed A., Junger, Pedro C., Galand, Pierre E., Lovejoy, Connie, Murray, Alison, Sarmento, Hugo, Tara Oceans Coordinators, Acinas, Silvia G., Babin, Marcel, Iudicone, Daniele, Jaillon, Olivier, Karsenti, Eric, Wincker, Patrick, Karp-Boss, Lee, Sullivan, Matthew B., Bowler, Chris, Vargas, Colomban de, Eveillard, Damien, Laboratoire des Sciences du Numérique de Nantes (LS2N), IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Ecogéochimie des environnements benthiques (LECOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'océanographie de Villefranche (LOV), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de biologie de l'ENS Paris (UMR 8197/1024) (IBENS), Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Institut de biologie de l'ENS Paris (IBENS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Département de Biologie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Agencia Estatal de Investigación (España), Centre National de la Recherche Scientifique (France), European Molecular Biology Laboratory, Helmut Horten Foundation, Ministerio de Ciencia, Innovación y Universidades (España), European Research Council, European Commission, Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), and Natural Sciences and Engineering Research Council of Canada

Subjects
fungi, [SDE]Environmental Sciences, sense organs
Abstract

This article is contribution number 120 of Tara Oceans.-- 15 pages, 4 figures, supplementary materials https://www.science.org/doi/suppl/10.1126/sciadv.abg1921/suppl_file/sciadv.abg1921_SM.pdf.-- Data and materials availability: Data described here are available at the EBI under the project identifiers PRJEB402 and PRJEB7988 and at PANGAEA (96). All data (raw abundance matrices and interactome graphML files) needed to evaluate the conclusions of the paper are available in the Supplementary Materials. A web server for exploring and searching the global ocean interactome is available at https://saas.ls2n.fr/Tara-Oceans-interactome/, Marine plankton form complex communities of interacting organisms at the base of the food web, which sustain oceanic biogeochemical cycles and help regulate climate. Although global surveys are starting to reveal ecological drivers underlying planktonic community structure and predicted climate change responses, it is unclear how community-scale species interactions will be affected by climate change. Here, we leveraged Tara Oceans sampling to infer a global ocean cross-domain plankton co-occurrence network—the community interactome—and used niche modeling to assess its vulnerabilities to environmental change. Globally, this revealed a plankton interactome self-organized latitudinally into marine biomes (Trades, Westerlies, Polar) and more connected poleward. Integrated niche modeling revealed biome-specific community interactome responses to environmental change and forecasted the most affected lineages for each community. These results provide baseline approaches to assess community structure and organismal interactions under climate scenarios while identifying plausible plankton bioindicators for ocean monitoring of climate change, We further thank the commitment of the following sponsors: CNRS (in particular Groupement de Recherche GDR3280 and the Research Federation for the study of Global Ocean Systems Ecology and Evolution, FR2022/Tara Oceans-GOSEE), European Molecular Biology Laboratory (EMBL), Genoscope/CEA, the French Ministry of Research, the French Government “Investissements d’Avenir” programmes OCEANOMICS (ANR-11-BTBR-0008), FRANCE GENOMIQUE (ANR-10-INBS-09-08), MEMO LIFE (ANR-10-LABX-54), PSL* Research University (ANR-11-IDEX-0001-02), ETH and the Helmut Horten Foundation, MEXT/JSPS/KAKENHI (projects 16H06429, 16K21723, 16H06437, and 18H02279), the Spanish Ministry of Economy and Competitiveness (project MAGGY-CTM2017-87736-R), ERC Advanced Award Diatomic (grant agreement 835067 to CB), the CNRS MITI through the interdisciplinary program Modélisation du Vivant (GOBITMAP grant to SC), and the H2020 European Commission project AtlantECO (award number 862923). […]. E.D. is supported by the RFI ATLANSTIC2020 grant (PROBIOSTIC grant to DE). M.Bu. received financial support from the French Facility for Global Environment (FFEM) as part of the “Ocean Plankton, Climate and Development” project. P.C.J. was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP (PhD grant 2017/26786-1). H.S. is supported by a Brazilian Research Council (CNPq) productivity grant (process 309514/2017-7) and FAPESP (grant 2014/14139-3). […] Additional funding from the Natural Sciences and Engineering Council (NSERC) Canada Discovery program is gratefully acknowledged., With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)

Published
2021

19. Environmental vulnerability of the global ocean epipelagic plankton community interactome

Author

Agencia Estatal de Investigación (España), Centre National de la Recherche Scientifique (France), European Molecular Biology Laboratory, Helmut Horten Foundation, Ministerio de Ciencia, Innovación y Universidades (España), European Research Council, European Commission, Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Natural Sciences and Engineering Research Council of Canada, Chaffron, Samuel, Delage, Erwan, Budinich, Marko, Vintache, Damien, Henry, Nicolas, Nef, Charlotte, Ardyna, Mathieu, Zayed, Ahmed A., Junger, Pedro C., Galand, Pierre E., Lovejoy, Connie, Murray, Alison, Sarmento, Hugo, Tara Oceans Coordinators, Acinas, Silvia G., Babin, Marcel, Iudicone, Daniele, Jaillon, Olivier, Karsenti, Eric, Wincker, Patrick, Karp-Boss, Lee, Sullivan, Matthew B., Bowler, Chris, Vargas, Colomban de, Eveillard, Damien, Agencia Estatal de Investigación (España), Centre National de la Recherche Scientifique (France), European Molecular Biology Laboratory, Helmut Horten Foundation, Ministerio de Ciencia, Innovación y Universidades (España), European Research Council, European Commission, Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Natural Sciences and Engineering Research Council of Canada, Chaffron, Samuel, Delage, Erwan, Budinich, Marko, Vintache, Damien, Henry, Nicolas, Nef, Charlotte, Ardyna, Mathieu, Zayed, Ahmed A., Junger, Pedro C., Galand, Pierre E., Lovejoy, Connie, Murray, Alison, Sarmento, Hugo, Tara Oceans Coordinators, Acinas, Silvia G., Babin, Marcel, Iudicone, Daniele, Jaillon, Olivier, Karsenti, Eric, Wincker, Patrick, Karp-Boss, Lee, Sullivan, Matthew B., Bowler, Chris, Vargas, Colomban de, and Eveillard, Damien

Abstract

Marine plankton form complex communities of interacting organisms at the base of the food web, which sustain oceanic biogeochemical cycles and help regulate climate. Although global surveys are starting to reveal ecological drivers underlying planktonic community structure and predicted climate change responses, it is unclear how community-scale species interactions will be affected by climate change. Here, we leveraged Tara Oceans sampling to infer a global ocean cross-domain plankton co-occurrence network—the community interactome—and used niche modeling to assess its vulnerabilities to environmental change. Globally, this revealed a plankton interactome self-organized latitudinally into marine biomes (Trades, Westerlies, Polar) and more connected poleward. Integrated niche modeling revealed biome-specific community interactome responses to environmental change and forecasted the most affected lineages for each community. These results provide baseline approaches to assess community structure and organismal interactions under climate scenarios while identifying plausible plankton bioindicators for ocean monitoring of climate change

Published
2021

20. Hydrothermal vents trigger massive phytoplankton blooms in the Southern Ocean

Author

Ardyna, Mathieu

Abstract

Hydrothermal activity is significant in regulating the dynamics of trace elements in the ocean. Biogeochemical models suggest that hydrothermal iron might play an important role in the iron-depleted Southern Ocean by enhancing the biological pump. However, the ability of this mechanism to affect large-scale biogeochemistry and the pathways by which hydrothermal iron reach the surface layer have not been observationally constrained. Here we present thefirst observational evidence of upwelled hydrothermally influenced deep waters stimulating massive phytoplankton blooms in the Southern Ocean. Captured by profilingfloats, two blooms were observed in the vicinity of the Antarctic Circumpolar Current, downstream of active hydrothermal vents along the Southwest Indian Ridge. These hotspots of biological activity are supported by mixing of hydrothermally sourced iron stimulated byflow- topography interactions. Suchfindings reveal the important role of hydrothermal vents on surface biogeochemistry, potentially fueling local hotspot sinks for atmospheric CO2by enhancing the biological pump.

Published
2020

21. Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom

Author

Massicotte, Philippe, Amiraux, Rémi, Amyot, Marie-pier, Archambault, Philippe, Ardyna, Mathieu, Arnaud, Laurent, Artigue, Lise, Aubry, Cyril, Ayotte, Pierre, Bécu, Guislain, Bélanger, Simon, Benner, Ronald, Bittig, Henry C, Bricaud, Annick, Brossier, Eric, Bruyant, Flavienne, Chauvaud, Laurent, Christiansen-stowe, Debra, Claustre, Hervé, Cornet-barthaux, Véronique, Coupel, Pierre, Cox, Christine, Delaforge, Aurélie, Dezutter, Thibault, Dimier, Céline, Dominé, Florent, Dufour, Francis, Dufresne, Christiane, Dumont, Dany, Ehn, Jens, Else, Brent, Ferland, Joannie, Forget, Marie-hélène, Fortier, Louis, Gali, Marti, Galindo, Virginie, Gallinari, Morgane, Garcia, Nicole, Gerikas-ribeiro, Catherine, Gourdal, Margaux, Gourvil, Priscilla, Goyens, Clemence, Grondin, Pierre-luc, Guillot, Pascal, Guilmette, Caroline, Houssais, Marie-noëlle, Joux, Fabien, Lacour, Léo, Lacour, Thomas, Lafond, Augustin, Lagunas, José, Lalande, Catherine, Laliberté, Julien, Lambert-girard, Simon, Larivière, Jade, Lavaud, Johann, Lebaron, Anita, Leblanc, Karine, Le Gall, Florence, Legras, Justine, Lemire, Mélanie, Levasseur, Maurice, Leymarie, Edouard, Leynaert, Aude, Lopes Dos Santos, Adriana, Lourenço, Antonio, Mah, David, Marec, Claudie, Marie, Dominique, Martin, Nicolas, Marty, Constance, Marty, Sabine, Massé, Guillaume, Matsuoka, Atsushi, Matthes, Lisa, Moriceau, Brivaela, Muller, Pierre-emmanuel, Mundy, Christopher-john, Neukermans, Griet, Oziel, Laurent, Panagiotopoulos, Christos, Pangazi, Jean-jacques, Picard, Ghislain, Picheral, Marc, Pinczon Du Sel, France, Pogorzelec, Nicole, Probert, Ian, Queguiner, Bernard, Raimbault, Patrick, Ras, Joséphine, Rehm, Eric, Reimer, Erin, Rontani, Jean-françois, Rysgaard, Soren, Saint-béat, Blanche, Sampei, Makoto, Sansoulet, Julie, Schmidt, Sabine, Sempere, Richard, Sevigny, Caroline, Shen, Yuan, Tragin, Margot, Tremblay, Jean-eric, Vaulot, Daniel, Verin, Gauthier, Vivier, Frédéric, Vladoiu, Anda, Whitehead, Jeremy, Babin, Marcel, Massicotte, Philippe, Amiraux, Rémi, Amyot, Marie-pier, Archambault, Philippe, Ardyna, Mathieu, Arnaud, Laurent, Artigue, Lise, Aubry, Cyril, Ayotte, Pierre, Bécu, Guislain, Bélanger, Simon, Benner, Ronald, Bittig, Henry C, Bricaud, Annick, Brossier, Eric, Bruyant, Flavienne, Chauvaud, Laurent, Christiansen-stowe, Debra, Claustre, Hervé, Cornet-barthaux, Véronique, Coupel, Pierre, Cox, Christine, Delaforge, Aurélie, Dezutter, Thibault, Dimier, Céline, Dominé, Florent, Dufour, Francis, Dufresne, Christiane, Dumont, Dany, Ehn, Jens, Else, Brent, Ferland, Joannie, Forget, Marie-hélène, Fortier, Louis, Gali, Marti, Galindo, Virginie, Gallinari, Morgane, Garcia, Nicole, Gerikas-ribeiro, Catherine, Gourdal, Margaux, Gourvil, Priscilla, Goyens, Clemence, Grondin, Pierre-luc, Guillot, Pascal, Guilmette, Caroline, Houssais, Marie-noëlle, Joux, Fabien, Lacour, Léo, Lacour, Thomas, Lafond, Augustin, Lagunas, José, Lalande, Catherine, Laliberté, Julien, Lambert-girard, Simon, Larivière, Jade, Lavaud, Johann, Lebaron, Anita, Leblanc, Karine, Le Gall, Florence, Legras, Justine, Lemire, Mélanie, Levasseur, Maurice, Leymarie, Edouard, Leynaert, Aude, Lopes Dos Santos, Adriana, Lourenço, Antonio, Mah, David, Marec, Claudie, Marie, Dominique, Martin, Nicolas, Marty, Constance, Marty, Sabine, Massé, Guillaume, Matsuoka, Atsushi, Matthes, Lisa, Moriceau, Brivaela, Muller, Pierre-emmanuel, Mundy, Christopher-john, Neukermans, Griet, Oziel, Laurent, Panagiotopoulos, Christos, Pangazi, Jean-jacques, Picard, Ghislain, Picheral, Marc, Pinczon Du Sel, France, Pogorzelec, Nicole, Probert, Ian, Queguiner, Bernard, Raimbault, Patrick, Ras, Joséphine, Rehm, Eric, Reimer, Erin, Rontani, Jean-françois, Rysgaard, Soren, Saint-béat, Blanche, Sampei, Makoto, Sansoulet, Julie, Schmidt, Sabine, Sempere, Richard, Sevigny, Caroline, Shen, Yuan, Tragin, Margot, Tremblay, Jean-eric, Vaulot, Daniel, Verin, Gauthier, Vivier, Frédéric, Vladoiu, Anda, Whitehead, Jeremy, and Babin, Marcel

Abstract

The Green Edge initiative was developed to investigate the processes controlling the primary productivity and the fate of organic matter produced during the Arctic phytoplankton spring bloom (PSB) and to determine its role in the ecosystem. Two field campaigns were conducted in 2015 and 2016 at an ice camp located on landfast sea ice southeast of Qikiqtarjuaq Island in Baffin Bay (67.4797N, 63.7895W). During both expeditions, a large suite of physical, chemical and biological variables was measured beneath a consolidated sea ice cover from the surface to the bottom at 360 m depth to better understand the factors driving the PSB. Key variables such as temperature, salinity, radiance, irradiance, nutrient concentrations, chlorophyll-a concentration, bacteria, phytoplankton and zooplankton abundance and taxonomy, carbon stocks and fluxes were routinely measured at the ice camp. Here, we present the results of a joint effort to tidy and standardize the collected data sets that will facilitate their reuse in other Arctic studies. The dataset is available at http://www.seanoe.org/data/00487/59892/ (Massicotte et al., 2019a).

Published
2020
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22. Under-Ice Phytoplankton Blooms: Shedding Light on the “Invisible” Part of Arctic Primary Production

Author

Ardyna, Mathieu, Mundy, C. J., Mayot, Nicolas, Matthes, Lisa C., Oziel, Laurent, Horvat, Christopher, Leu, Eva, Assmy, Philip, Hill, Victoria, Matrai, Patricia A., Gale, Matthew, Melnikov, Igor A., Arrigo, Kevin R., Ardyna, Mathieu, Mundy, C. J., Mayot, Nicolas, Matthes, Lisa C., Oziel, Laurent, Horvat, Christopher, Leu, Eva, Assmy, Philip, Hill, Victoria, Matrai, Patricia A., Gale, Matthew, Melnikov, Igor A., and Arrigo, Kevin R.

Abstract

The growth of phytoplankton at high latitudes was generally thought to begin in open waters of the marginal ice zone once the highly reflective sea ice retreats in spring, solar elevation increases, and surface waters become stratified by the addition of sea-ice melt water. In fact, virtually all recent large-scale estimates of primary production in the Arctic Ocean (AO) assume that phytoplankton production in the water column under sea ice is negligible. However, over the past two decades, an emerging literature showing significant under-ice phytoplankton production on a pan-Arctic scale has challenged our paradigms of Arctic phytoplankton ecology and phenology. This evidence, which builds on previous, but scarce reports, requires the Arctic scientific community to change its perception of traditional AO phenology and urgently revise it. In particular, it is essential to better comprehend, on small and large scales, the changing and variable icescapes, the under-ice light field and biogeochemical cycles during the transition from sea-ice covered to ice-free Arctic waters. Here, we provide a baseline of our current knowledge of under-ice blooms (UIBs), by defining their ecology and their environmental setting, but also their regional peculiarities (in terms of occurrence, magnitude, and assemblages), which is shaped by a complex AO. To this end, a multidisciplinary approach, i.e., combining expeditions and modern autonomous technologies, satellite, and modeling analyses, has been used to provide an overview of this pan-Arctic phenological feature, which will become increasingly important in future marine Arctic biogeochemical cycles.

Published
2020

23. Under-Ice Phytoplankton Blooms: Shedding Light on the “Invisible” Part of Arctic Primary Production

Author

Ardyna, Mathieu, primary, Mundy, C. J., additional, Mayot, Nicolas, additional, Matthes, Lisa C., additional, Oziel, Laurent, additional, Horvat, Christopher, additional, Leu, Eva, additional, Assmy, Philipp, additional, Hill, Victoria, additional, Matrai, Patricia A., additional, Gale, Matthew, additional, Melnikov, Igor A., additional, and Arrigo, Kevin R., additional

Published
2020
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25. Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom

Author

Massicotte, Philippe, primary, Amiraux, Rémi, additional, Amyot, Marie-Pier, additional, Archambault, Philippe, additional, Ardyna, Mathieu, additional, Arnaud, Laurent, additional, Artigue, Lise, additional, Aubry, Cyril, additional, Ayotte, Pierre, additional, Bécu, Guislain, additional, Bélanger, Simon, additional, Benner, Ronald, additional, Bittig, Henry C., additional, Bricaud, Annick, additional, Brossier, Éric, additional, Bruyant, Flavienne, additional, Chauvaud, Laurent, additional, Christiansen-Stowe, Debra, additional, Claustre, Hervé, additional, Cornet-Barthaux, Véronique, additional, Coupel, Pierre, additional, Cox, Christine, additional, Delaforge, Aurelie, additional, Dezutter, Thibaud, additional, Dimier, Céline, additional, Domine, Florent, additional, Dufour, Francis, additional, Dufresne, Christiane, additional, Dumont, Dany, additional, Ehn, Jens, additional, Else, Brent, additional, Ferland, Joannie, additional, Forget, Marie-Hélène, additional, Fortier, Louis, additional, Galí, Martí, additional, Galindo, Virginie, additional, Gallinari, Morgane, additional, Garcia, Nicole, additional, Gérikas Ribeiro, Catherine, additional, Gourdal, Margaux, additional, Gourvil, Priscilla, additional, Goyens, Clemence, additional, Grondin, Pierre-Luc, additional, Guillot, Pascal, additional, Guilmette, Caroline, additional, Houssais, Marie-Noëlle, additional, Joux, Fabien, additional, Lacour, Léo, additional, Lacour, Thomas, additional, Lafond, Augustin, additional, Lagunas, José, additional, Lalande, Catherine, additional, Laliberté, Julien, additional, Lambert-Girard, Simon, additional, Larivière, Jade, additional, Lavaud, Johann, additional, LeBaron, Anita, additional, Leblanc, Karine, additional, Le Gall, Florence, additional, Legras, Justine, additional, Lemire, Mélanie, additional, Levasseur, Maurice, additional, Leymarie, Edouard, additional, Leynaert, Aude, additional, Lopes dos Santos, Adriana, additional, Lourenço, Antonio, additional, Mah, David, additional, Marec, Claudie, additional, Marie, Dominique, additional, Martin, Nicolas, additional, Marty, Constance, additional, Marty, Sabine, additional, Massé, Guillaume, additional, Matsuoka, Atsushi, additional, Matthes, Lisa, additional, Moriceau, Brivaela, additional, Muller, Pierre-Emmanuel, additional, Mundy, Christopher-John, additional, Neukermans, Griet, additional, Oziel, Laurent, additional, Panagiotopoulos, Christos, additional, Pangrazi, Jean-Jacques, additional, Picard, Ghislain, additional, Picheral, Marc, additional, Pinczon du Sel, France, additional, Pogorzelec, Nicole, additional, Probert, Ian, additional, Quéguiner, Bernard, additional, Raimbault, Patrick, additional, Ras, Joséphine, additional, Rehm, Eric, additional, Reimer, Erin, additional, Rontani, Jean-François, additional, Rysgaard, Søren, additional, Saint-Béat, Blanche, additional, Sampei, Makoto, additional, Sansoulet, Julie, additional, Schmechtig, Catherine, additional, Schmidt, Sabine, additional, Sempéré, Richard, additional, Sévigny, Caroline, additional, Shen, Yuan, additional, Tragin, Margot, additional, Tremblay, Jean-Éric, additional, Vaulot, Daniel, additional, Verin, Gauthier, additional, Vivier, Frédéric, additional, Vladoiu, Anda, additional, Whitehead, Jeremy, additional, and Babin, Marcel, additional

Published
2020
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26. Environmental drivers of under-ice phytoplankton bloom dynamics in the Arctic Ocean

Author

Ardyna, Mathieu, primary, Mundy, C. J., additional, Mills, Matthew M., additional, Oziel, Laurent, additional, Grondin, Pierre-Luc, additional, Lacour, Léo, additional, Verin, Gauthier, additional, van Dijken, Gert, additional, Ras, Joséphine, additional, Alou-Font, Eva, additional, Babin, Marcel, additional, Gosselin, Michel, additional, Tremblay, Jean-Éric, additional, Raimbault, Patrick, additional, Assmy, Philipp, additional, Nicolaus, Marcel, additional, Claustre, Hervé, additional, and Arrigo, Kevin R., additional

Published
2020
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27. Marine DNA Viral Macro- and Microdiversity from Pole to Pole

Author

Région Bretagne, Veolia Foundation, Fondation Prince Albert II de Monaco, Centre National de la Recherche Scientifique (France), Gregory, Ann C., Zayed, Ahmed A., Conceição-Neto, Nadia, Temperton, Ben, Alberti, Adriana, Ardyna, Mathieu, Arkhipova, Ksenia, Carmichael, Margaux, Cruaud, Corinne, Dimier, Céline, Domínguez-Huerta, Guillermo, Ferland, Joannie, Kandels‐Lewis, Stefanie, Liu, Yunxiao, Marec, Claudie, Pesant, Stéphane, Picheral, Marc, Pisarev, Sergey, Poulain, Julie, Tremblay, J. E., Vik, Dean, Acinas, Silvia G., Babin, Marcel, Bork, Peer, Boss, Emmanuel, Bowler, Chris, Cochrane, Guy, Vargas, Colomban de, Follows, Michael J., Gorsky, Gabriel, Grimsley, Nigel, Guidi, Lionel, Hingamp, Pascal, Iudicone, Daniele, Jaillon, Olivier, Karp-Boss, Lee, Karsenti, Eric, Not, Fabrice, Ogata, Hiroyuki, Poulton, N.J., Raes, Jeroen, Sardet, Christian, Speich, Sabrina, Stemmann, Lars, Sunagawa, Shinichi, Wincker, Patrick, Culley, Alexander I., Dutilh, Bas E., Roux, Simon, Sullivan, Matthew B., Région Bretagne, Veolia Foundation, Fondation Prince Albert II de Monaco, Centre National de la Recherche Scientifique (France), Gregory, Ann C., Zayed, Ahmed A., Conceição-Neto, Nadia, Temperton, Ben, Alberti, Adriana, Ardyna, Mathieu, Arkhipova, Ksenia, Carmichael, Margaux, Cruaud, Corinne, Dimier, Céline, Domínguez-Huerta, Guillermo, Ferland, Joannie, Kandels‐Lewis, Stefanie, Liu, Yunxiao, Marec, Claudie, Pesant, Stéphane, Picheral, Marc, Pisarev, Sergey, Poulain, Julie, Tremblay, J. E., Vik, Dean, Acinas, Silvia G., Babin, Marcel, Bork, Peer, Boss, Emmanuel, Bowler, Chris, Cochrane, Guy, Vargas, Colomban de, Follows, Michael J., Gorsky, Gabriel, Grimsley, Nigel, Guidi, Lionel, Hingamp, Pascal, Iudicone, Daniele, Jaillon, Olivier, Karp-Boss, Lee, Karsenti, Eric, Not, Fabrice, Ogata, Hiroyuki, Poulton, N.J., Raes, Jeroen, Sardet, Christian, Speich, Sabrina, Stemmann, Lars, Sunagawa, Shinichi, Wincker, Patrick, Culley, Alexander I., Dutilh, Bas E., Roux, Simon, and Sullivan, Matthew B.

Abstract

Microbes drive most ecosystems and are modulated by viruses that impact their lifespan, gene flow, and metabolic outputs. However, ecosystem-level impacts of viral community diversity remain difficult to assess due to classification issues and few reference genomes. Here, we establish an ∼12-fold expanded global ocean DNA virome dataset of 195,728 viral populations, now including the Arctic Ocean, and validate that these populations form discrete genotypic clusters. Meta-community analyses revealed five ecological zones throughout the global ocean, including two distinct Arctic regions. Across the zones, local and global patterns and drivers in viral community diversity were established for both macrodiversity (inter-population diversity) and microdiversity (intra-population genetic variation). These patterns sometimes, but not always, paralleled those from macro-organisms and revealed temperate and tropical surface waters and the Arctic as biodiversity hotspots and mechanistic hypotheses to explain them. Such further understanding of ocean viruses is critical for broader inclusion in ecosystem models

Published
2019

29. Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom

Author

Massicotte, Philippe, primary, Amiraux, Rémi, additional, Amyot, Marie-Pier, additional, Archambault, Philippe, additional, Ardyna, Mathieu, additional, Arnaud, Laurent, additional, Artigue, Lise, additional, Aubry, Cyril, additional, Ayotte, Pierre, additional, Bécu, Guislain, additional, Bélanger, Simon, additional, Benner, Ronald, additional, Bittig, Henry C., additional, Bricaud, Annick, additional, Brossier, Éric, additional, Bruyant, Flavienne, additional, Chauvaud, Laurent, additional, Christiansen-Stowe, Debra, additional, Claustre, Hervé, additional, Cornet-Barthaux, Véronique, additional, Coupel, Pierre, additional, Cox, Christine, additional, Delaforge, Aurelie, additional, Dezutter, Thibaud, additional, Dimier, Céline, additional, Dominé, Florent, additional, Dufour, Francis, additional, Dufresne, Christiane, additional, Dumont, Dany, additional, Ehn, Jens, additional, Else, Brent, additional, Ferland, Joannie, additional, Forget, Marie-Hélène, additional, Fortier, Louis, additional, Galí, Martí, additional, Galindo, Virginie, additional, Gallinari, Morgane, additional, Garcia, Nicole, additional, Gérikas-Ribeiro, Catherine, additional, Gourdal, Margaux, additional, Gourvil, Priscilla, additional, Goyens, Clemence, additional, Grondin, Pierre-Luc, additional, Guillot, Pascal, additional, Guilmette, Caroline, additional, Houssais, Marie-Noëlle, additional, Joux, Fabien, additional, Lacour, Léo, additional, Lacour, Thomas, additional, Lafond, Augustin, additional, Lagunas, José, additional, Lalande, Catherine, additional, Laliberté, Julien, additional, Lambert-Girard, Simon, additional, Larivière, Jade, additional, Lavaud, Johann, additional, Le Gall, Florence, additional, LeBaron, Anita, additional, Leblanc, Karine, additional, Legras, Justine, additional, Lemire, Mélanie, additional, Levasseur, Maurice, additional, Leymarie, Edouard, additional, Leynaert, Aude, additional, Lopes dos Santos, Adriana, additional, Lourenço, Antonio, additional, Mah, David, additional, Marec, Claudie, additional, Marie, Dominique, additional, Martin, Nicolas, additional, Marty, Constance, additional, Marty, Sabine, additional, Massé, Guillaume, additional, Matsuoka, Atsushi, additional, Matthes, Lisa, additional, Moriceau, Brivaela, additional, Muller, Pierre-Emmanuel, additional, Mundy, Christopher J., additional, Neukermans, Griet, additional, Oziel, Laurent, additional, Panagiotopoulos, Christos, additional, Pangazi, Jean-Jacques, additional, Picard, Ghislain, additional, Picheral, Marc, additional, Pinczon du Sel, France, additional, Pogorzelec, Nicole, additional, Probert, Ian, additional, Queguiner, Bernard, additional, Raimbault, Patrick, additional, Ras, Joséphine, additional, Rehm, Eric, additional, Reimer, Erin, additional, Rontani, Jean-François, additional, Rysgaard, Søren, additional, Saint-Béat, Blanche, additional, Sampei, Makoto, additional, Sansoulet, Julie, additional, Schmidt, Sabine, additional, Sempéré, Richard, additional, Sévigny, Caroline, additional, Shen, Yuan, additional, Tragin, Margot, additional, Tremblay, Jean-Éric, additional, Vaulot, Daniel, additional, Verin, Gauthier, additional, Vivier, Frédéric, additional, Vladoiu, Anda, additional, Whitehead, Jeremy, additional, and Babin, Marcel, additional

Published
2019
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30. Marine DNA Viral Macro-and Micro-Diversity From Pole to Pole

Author

Gregory, Ann, primary, Zayed, Ahmed, additional, Conceição-Neto, Nádia, additional, Temperton, Ben, additional, Bolduc, Ben, additional, Alberti, Adriana, additional, Ardyna, Mathieu, additional, Arkhipova, Ksenia, additional, Carmicheal, Margaux, additional, Cruaud, Corinne, additional, Dimier, Céline, additional, Dominguez-Huerta, Guillermo, additional, Ferland, Joannie, additional, Kandels-Lewis, Stefanie, additional, Liu, Yunxiao, additional, Marec, Claudie, additional, Stéphane, Stéphane, additional, Picheral, Marc, additional, Pisarev, Sergey, additional, Poulain, Julie, additional, Tremblay, Jean-Éric, additional, Vik, Dean, additional, Coordinators, Tara Ocean, additional, Babin, Marcel, additional, Bowler, Chris, additional, Culley, Alexander, additional, de Vargas, Colomban, additional, Dutilh, Bas, additional, Iudicone, Daniele, additional, Karp-Boss, Lee, additional, Roux, Simon, additional, Sunagawa, Shinichi, additional, Wincker, Patrick, additional, and Sullivan, Matthew, additional

Published
2019
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31. Phaeocystis versus diatoms blooms in the ice covered European Arctic

Author

Peeken, Ilka, Ardyna, Mathieu, Assmy, Philipp, Bruyant, Flavienne, Flores, Hauke, Hessel, Johanna, Grondin, Pierre-Luc, Huot, Yannick, Janout, Markus, Katlein, Christian, Kauko, Hanna M., Koenig, Zoe, Korhonen, Meri, Kowalczuk, Piotr, Lange, Benjamin, Massicotte, Philippe, Metfies, Katja, Meyer, Amelie, Michel, Christine, Nikolopoulos, Anna, Nöthig, Eva-Maria, Olson, Lasse Mork, Duarte, Pedro, Tremblay, Jean-Éric, Babin, Marcel, Peeken, Ilka, Ardyna, Mathieu, Assmy, Philipp, Bruyant, Flavienne, Flores, Hauke, Hessel, Johanna, Grondin, Pierre-Luc, Huot, Yannick, Janout, Markus, Katlein, Christian, Kauko, Hanna M., Koenig, Zoe, Korhonen, Meri, Kowalczuk, Piotr, Lange, Benjamin, Massicotte, Philippe, Metfies, Katja, Meyer, Amelie, Michel, Christine, Nikolopoulos, Anna, Nöthig, Eva-Maria, Olson, Lasse Mork, Duarte, Pedro, Tremblay, Jean-Éric, and Babin, Marcel

Published
2018

32. Plankton assemblage estimated with BGC-Argo floats in the Southern Ocean

Author

Rembauville, Mathieu, Briggs, Nathan, Ardyna, Mathieu, Uitz, Julia, Claustre, Hervé, Blain, Séphane, Laboratoire d'océanographie de Villefranche (LOV), Observatoire océanologique de Villefranche-sur-mer (OOVM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire océanologique de Banyuls (OOB), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
Abstract

International audience

Published
2017

33. Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea

Author

Oziel, Laurent, Neukermans, Griet, Ardyna, Mathieu, Lancelot, Christiane, Tison, Jean-Louis, Wassmann, P., Sirven, Jérôme, Ruiz-Pino, Diana, Gascard, Jean-Claude, Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Takuvik Joint International Laboratory ULAVAL-CNRS, Université Laval [Québec] (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'océanographie de Villefranche (LOV), Observatoire océanologique de Villefranche-sur-mer (OOVM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Écologie des Systèmes Aquatiques, Université libre de Bruxelles (ULB), Laboratoire de Glaciologie, Department of Arctic and Marine Biology, Faculty of BioSciences, Fisheries and Economy, University of Tromsø (UiT), Variabilité de l'Océan et de la Glace de mer (VOG), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Équipe CO2 (E-CO2), Austral, Boréal et Carbone (ABC), ARCTic marine ecosystem research network, ARCTOS (www.arctosresearch.net), the research project Arctic Seasonal Ice Zone Ecology (Arctic SIZE), European Project: 265863,EC:FP7:TPT,FP7-OCEAN-2010,ACCESS(2011), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Laval [Québec] (ULaval)-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636))

Subjects
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920, climate change, Barents Sea, phytoplankton, [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph], Atlantification, VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920, sea ice, polar front
Abstract

An edited version of this paper was published by AGU. Copyright (2017) American Geophysical Union. Oziel, L., Neukermans, G., Ardyna, M., Lancelot, C., Tison, J-L., Wassmann P., ... Gascard, J-C. (2017). Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea. Journal of Geophysical Research: Oceans, 122(6), 5121-5139. https://doi.org/10.1002/2016JC012582. To view the published open abstract, go to https://doi.org/10.1002/2016JC012582. Phytoplankton blooms in the Barents Sea are highly sensitive to seasonal and interannual changes in sea ice extent, water mass distribution, and oceanic fronts. With the ongoing increase of Atlantic Water inflows, we expect an impact on these blooms. Here, we use a state‐of‐the‐art collection of in situ hydrogeochemical data for the period 1998–2014, which includes ocean color satellite‐derived proxies for the biomass of calcifying and noncalcifying phytoplankton. Over the last 17 years, sea ice extent anomalies were evidenced having direct consequences for the spatial extent of spring blooms in the Barents Sea. In years of minimal sea ice extent, two spatially distinct blooms were clearly observed: one along the ice edge and another in ice‐free water. These blooms are thought to be triggered by different stratification mechanisms: heating of the surface layers in ice‐free waters and melting of the sea ice along the ice edge. In years of maximal sea ice extent, no such spatial delimitation was observed. The spring bloom generally ended in June when nutrients in the surface layer were depleted. This was followed by a stratified and oligotrophic summer period. A coccolithophore bloom generally developed in August, but was confined only to Atlantic Waters. In these same waters, a late summer bloom of noncalcifying algae was observed in September, triggered by enhanced mixing, which replenishes surface waters with nutrients. Altogether, the 17 year time‐series revealed a northward and eastward shift of the spring and summer phytoplankton blooms.

Published
2017

34. Delineating environmental control of phytoplankton biomass and phenology in the Southern Ocean

Author

Ardyna, Mathieu, Claustre, Hervé, Sallée, Jean-Baptiste, d'Ovidio, Francesco, Gentili, Bernard, van Dijken, Gert, d'Ortenzio, Fabrizio, Arrigo, Kevin Robert, Laboratoire d'océanographie de Villefranche (LOV), Observatoire océanologique de Villefranche-sur-mer (OOVM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Processus de couplage à Petite Echelle, Ecosystèmes et Prédateurs Supérieurs (PEPS), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Department of Earth System Science [Stanford] (ESS), Stanford EARTH, Stanford University-Stanford University, Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636))

Subjects
phytoplankton phenology, remote sensing, Phytoplankton ecology, Climate Change, Biological pump, [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph], Southern Ocean
Abstract

International audience; The Southern Ocean (SO), an area highly sensitive to climate change, is currently experiencing rapid warming and freshening. Such drastic physical changes might significantly alter the SO's biological pump. For more accurate predictions of the possible evolution of this pump, a better understanding of the environmental factors controlling SO phytoplankton dynamics is needed. Here we present a satellite-based study deciphering the complex environmental control of phytoplankton biomass (PB) and phenology (PH; timing and magnitude of phytoplankton blooms) in the SO. We reveal that PH and PB are mostly organized in the SO at two scales: a large latitudinal scale and a regional scale. Latitudinally, a clear gradient in the timing of bloom occurrence appears tightly linked to the seasonal cycle in irradiance, with some exceptions in specific light-limited regimes (i.e., well-mixed areas). Superimposed on this latitudinal scale, zonal asymmetries, up to 3 orders of magnitude, in regional-scale PB are mainly driven by local advective and iron supply processes. These findings provide a global understanding of PB and PH in the SO, which is of fundamental interest for identifying and explaining ongoing changes as well as predicting future changes in the SO biological pump.

Published
2017

36. Plankton Assemblage Estimated With BGC-Argo Floats in the Southern Ocean: Implications for Seasonal Successions and Particle Export

Author

Rembauville, Mathieu, Briggs, Nathan, Ardyna, Mathieu, Uitz, Julia, Catala, Philippe, Penkerc'H, Cristophe, Poteau, Antoine, Claustre, Herve, Blain, Stephane, Rembauville, Mathieu, Briggs, Nathan, Ardyna, Mathieu, Uitz, Julia, Catala, Philippe, Penkerc'H, Cristophe, Poteau, Antoine, Claustre, Herve, and Blain, Stephane

Abstract

The Southern Ocean (SO) hosts plankton communities that impact the biogeochemical cycles of the global ocean. However, weather conditions in the SO restrict mainly in situ observations of plankton communities to spring and summer, preventing the description of biological successions at an annual scale. Here, we use shipboard observations collected in the Indian sector of the SO to develop a multivariate relationship between physical and bio-optical data, and, the composition and carbon content of the plankton community. Then we apply this multivariate relationship to five biogeochemical Argo (BGC-Argo) floats deployed within the same bio-geographical zone as the ship-board observations to describe spatial and seasonal changes in plankton assemblage. The floats reveal a high contribution of bacteria below the mixed layer, an overall low abundance of picoplankton and a seasonal succession from nano- to microplankton during the spring bloom. Both naturally iron-fertilized waters downstream of the Crozet and Kerguelen Plateaus show elevated phytoplankton biomass in spring and summer but they differ by a nano- or microplankton dominance at Crozet and Kerguelen, respectively. The estimated plankton group successions appear consistent with independent estimations of particle diameter based on the optical signals. Furthermore, the comparison of the plankton community composition in the surface layer with the presence of large mesopelagic particles diagnosed by spikes of optical signals provides insight into the nature and temporal changes of ecological vectors that drive particle export. This study emphasizes the power of BGC-Argo floats for investigating important biogeochemical processes at high temporal and spatial resolution.

Published
2017
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39. Arctic Oceanography - Oceanography: Atmosphere-Ocean Exchange, Biogeochemistry & Physics

Author

Findlay, Helen, Cottier, Finlo, Morata, Nathalie, Hindshaw, Ruth, Nikolopoulos, Anna, Ardyna, Mathieu, M��rz, Christian, Queguiner, Bernhard, Roca-Mart��, Montserrat, and Bourgois, Solveig

Subjects
Earth sciences and geology, Earth Science
Abstract

Priority Sheet on Arctic oceanography towards the 3rd International Conference on Arctic Research Planning (ICARPIII), Arctic in Rapid Transition

Published
2015
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40. Green Edge ice camp campaigns: understanding the processes controlling the under-ice Arctic phytoplankton spring bloom.

Author

Massicotte, Philippe, Amiraux, Rémi, Amyot, Marie-Pier, Archambault, Philippe, Ardyna, Mathieu, Arnaud, Laurent, Artigue, Lise, Aubry, Cyril, Ayotte, Pierre, Bécu, Guislain, Bélanger, Simon, Benner, Ronald, Bittig, Henry C., Bricaud, Annick, Brossier, Éric, Bruyant, Flavienne, Chauvaud, Laurent, Christiansen-Stowe, Debra, Claustre, Hervé, and Cornet-Barthaux, Véronique

Subjects
ALGAL blooms, SEA ice, ICE, ZOOPLANKTON, CAMPS, MARINE zooplankton, EDGES (Geometry), ORGANIC compounds
Abstract

The Green Edge initiative was developed to investigate the processes controlling the primary productivity and the fate of organic matter produced during the Arctic phytoplankton spring bloom (PSB) and to determine its role in the ecosystem. Two field campaigns were conducted in 2015 and 2016 at an ice camp located on landfast sea ice southeast of Qikiqtarjuaq Island in Baffin Bay (67.4797N, 63.7895W). During both expeditions, a large suite of physical, chemical and biological variables was measured beneath a consolidated sea ice cover from the surface to the bottom at 360 m depth to better understand the factors driving the PSB. Key variables such as temperature, salinity, radiance, irradiance, nutrient concentrations, chlorophyll-a concentration, bacteria, phytoplankton and zooplankton abundance and taxonomy, carbon stocks and fluxes were routinely measured at the ice camp. Here, we present the results of a joint effort to tidy and standardize the collected data sets that will facilitate their reuse in other Arctic studies. [ABSTRACT FROM AUTHOR]

Published
2019
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41. An assessment of phytoplankton primary productivity in the Arctic Ocean from satellite ocean color/in situ chlorophyll-a-based models

Author

Lee, Younjoo J., Matrai, Patricia A., Friedrichs, Marjorie A. M., Saba, Vincent S., Antoine, David, Ardyna, Mathieu, Asanuma, Ichio, Babin, Marcel, Bélanger, Simon, Benoît-Gagné, Maxime, Devred, Emmanuel, Fernández-Méndez, Mar, Gentili, Bernard, Hirawake, Toru, Kang, Sung-Ho, Kameda, Takahiko, Katlein, Christian, Lee, Sang H., Lee, Zhongping, Mélin, Frédéric, Scardi, Michele, Smyth, Tim J., Tang, Shilin, Turpie, Kevin R., Waters, Kirk J., Westberry, Toby K., Lee, Younjoo J., Matrai, Patricia A., Friedrichs, Marjorie A. M., Saba, Vincent S., Antoine, David, Ardyna, Mathieu, Asanuma, Ichio, Babin, Marcel, Bélanger, Simon, Benoît-Gagné, Maxime, Devred, Emmanuel, Fernández-Méndez, Mar, Gentili, Bernard, Hirawake, Toru, Kang, Sung-Ho, Kameda, Takahiko, Katlein, Christian, Lee, Sang H., Lee, Zhongping, Mélin, Frédéric, Scardi, Michele, Smyth, Tim J., Tang, Shilin, Turpie, Kevin R., Waters, Kirk J., and Westberry, Toby K.

Abstract

We investigated 32 net primary productivity (NPP) models by assessing skills to reproduce integrated NPP in the Arctic Ocean. The models were provided with two sources each of surface chlorophyll-a concentration (chlorophyll), photosynthetically available radiation (PAR), sea surface temperature (SST), and mixed-layer depth (MLD). The models were most sensitive to uncertainties in surface chlorophyll, generally performing better with in situ chlorophyll than with satellite-derived values. They were much less sensitive to uncertainties in PAR, SST, and MLD, possibly due to relatively narrow ranges of input data and/or relatively little difference between input data sources. Regardless of type or complexity, most of the models were not able to fully reproduce the variability of in situ NPP, whereas some of them exhibited almost no bias (i.e., reproduced the mean of in situ NPP). The models performed relatively well in low-productivity seasons as well as in sea ice-covered/deep-water regions. Depth-resolved models correlated more with in situ NPP than other model types, but had a greater tendency to overestimate mean NPP whereas absorption-based models exhibited the lowest bias associated with weaker correlation. The models performed better when a subsurface chlorophyll-a maximum (SCM) was absent. As a group, the models overestimated mean NPP, however this was partly offset by some models underestimating NPP when a SCM was present. Our study suggests that NPP models need to be carefully tuned for the Arctic Ocean because most of the models performing relatively well were those that used Arctic-relevant parameters. This article is protected by copyright. All rights reserved.

Published
2015

42. Letter-to-the-Editor: Making science animations: new possibilities for making science accessible to the public

Author

May, Inga, Carlson, David, Ardyna, Mathieu, Geoffroy, Maxime, and Heikkilä, Maija

Abstract

Lubchenco challenges scientists to: ‘‘ address the most urgent needs of society, in proportion to their importance; communicate their knowledge and understanding widely in order to inform decisions of individuals and institutions; and exercise good judgment, wisdom, and humility’’. As participants in the International Polar Year (IPY) of 2007-08, we hope we contributed to the first challenge. Here we address the second challenge, effective science communications.(Published: 28 December 2011)Citation: Polar Research 2011, 30, 15315, DOI: 10.3402/polar.v30i0.15315 Access the supplementary material to this article: Full set of animations (please see Supplementary files in the column to the right, under Article Tools).

Published
2011

43. An assessment of phytoplankton primary productivity in the Arctic Ocean from satellite ocean color/in situ chlorophyll‐a based models

Author

Lee, Younjoo J., primary, Matrai, Patricia A., additional, Friedrichs, Marjorie A. M., additional, Saba, Vincent S., additional, Antoine, David, additional, Ardyna, Mathieu, additional, Asanuma, Ichio, additional, Babin, Marcel, additional, Bélanger, Simon, additional, Benoît‐Gagné, Maxime, additional, Devred, Emmanuel, additional, Fernández‐Méndez, Mar, additional, Gentili, Bernard, additional, Hirawake, Toru, additional, Kang, Sung‐Ho, additional, Kameda, Takahiko, additional, Katlein, Christian, additional, Lee, Sang H., additional, Lee, Zhongping, additional, Mélin, Frédéric, additional, Scardi, Michele, additional, Smyth, Tim J., additional, Tang, Shilin, additional, Turpie, Kevin R., additional, Waters, Kirk J., additional, and Westberry, Toby K., additional

Published
2015
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46. Environmental vulnerability of the global ocean epipelagic plankton community interactome.

Author

Chaffron S, Delage E, Budinich M, Vintache D, Henry N, Nef C, Ardyna M, Zayed AA, Junger PC, Galand PE, Lovejoy C, Murray AE, Sarmento H, Acinas SG, Babin M, Iudicone D, Jaillon O, Karsenti E, Wincker P, Karp-Boss L, Sullivan MB, Bowler C, de Vargas C, and Eveillard D

Abstract

Marine plankton form complex communities of interacting organisms at the base of the food web, which sustain oceanic biogeochemical cycles and help regulate climate. Although global surveys are starting to reveal ecological drivers underlying planktonic community structure and predicted climate change responses, it is unclear how community-scale species interactions will be affected by climate change. Here, we leveraged Tara Oceans sampling to infer a global ocean cross-domain plankton co-occurrence network-the community interactome-and used niche modeling to assess its vulnerabilities to environmental change. Globally, this revealed a plankton interactome self-organized latitudinally into marine biomes (Trades, Westerlies, Polar) and more connected poleward. Integrated niche modeling revealed biome-specific community interactome responses to environmental change and forecasted the most affected lineages for each community. These results provide baseline approaches to assess community structure and organismal interactions under climate scenarios while identifying plausible plankton bioindicators for ocean monitoring of climate change., (Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).)

Published
2021
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