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18 results on '"Habasque Jérémie"'

3. Stable Tuna Mercury Concentrations since 1971 Illustrate Marine Inertia and the Need for Strong Emission Reductions under the Minamata Convention

Author

Médieu, Anaïs, primary, Point, David, additional, Sonke, Jeroen E., additional, Angot, Hélène, additional, Allain, Valérie, additional, Bodin, Nathalie, additional, Adams, Douglas H., additional, Bignert, Anders, additional, Streets, David G., additional, Buchanan, Pearse B., additional, Heimbürger-Boavida, Lars-Eric, additional, Pethybridge, Heidi, additional, Gillikin, David P., additional, Ménard, Frédéric, additional, Choy, C. Anela, additional, Itai, Takaaki, additional, Bustamante, Paco, additional, Dhurmeea, Zahirah, additional, Ferriss, Bridget E., additional, Bourlès, Bernard, additional, Habasque, Jérémie, additional, Verheyden, Anouk, additional, Munaron, Jean-Marie, additional, Laffont, Laure, additional, Gauthier, Olivier, additional, and Lorrain, Anne, additional

Published
2024
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6. Natural iron fertilization by shallow hydrothermal sources fuels diazotroph blooms in the ocean

Author

Bonnet, Sophie, primary, Guieu, Cécile, additional, Taillandier, Vincent, additional, Boulart, Cédric, additional, Bouruet-Aubertot, Pascale, additional, Gazeau, Frédéric, additional, Scalabrin, Carla, additional, Bressac, Matthieu, additional, Knapp, Angela N., additional, Cuypers, Yannis, additional, González-Santana, David, additional, Forrer, Heather J., additional, Grisoni, Jean-Michel, additional, Grosso, Olivier, additional, Habasque, Jérémie, additional, Jardin-Camps, Mercedes, additional, Leblond, Nathalie, additional, Le Moigne, Frédéric A. C., additional, Lebourges-Dhaussy, Anne, additional, Lory, Caroline, additional, Nunige, Sandra, additional, Pulido-Villena, Elvira, additional, Rizzo, Andrea L., additional, Sarthou, Géraldine, additional, and Tilliette, Chloé, additional

Published
2023
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8. Natural iron fertilization by shallow hydrothermal sources fuels diazotroph blooms in the Ocean

Author

2., B, Guieu, C, Taillandier, V, Boulart, C, Bouruet-Aubertot, P, Gazeau, F, Scalabrin, C, Bressac Matthieu, K, Angela, N, Cuypers, Y, González-Santana, D, Forrer Heather, J, Grisoni, J, Grosso, O, Habasque, J, Jardin-Camps, M, Leblond, N, Le Moigne Frédéric, A, Lebourges-Dhaussy, A, Lory, C, Nunige, S, Pulido-Villena, E, Rizzo, A, Sarthou, G, Tilliette, C, 2. Bonnet Sophie, Guieu Cécile, Taillandier Vincent, Boulart Cédric, Bouruet-Aubertot Pascale, Gazeau Frédéric, Scalabrin Carla, Bressac Matthieu Knapp, Angela N., Cuypers Yannis, González-Santana David, Forrer Heather J., Grisoni Jean-Michel, Grosso Olivier, Habasque Jérémie, Jardin-Camps Mercedes, Leblond Nathalie, Le Moigne Frédéric A. C., Lebourges-Dhaussy Anne, Lory Caroline, Nunige Sandra, Pulido-Villena Elvira, Rizzo A, Sarthou Géraldine, Tilliette Chloé, 2., B, Guieu, C, Taillandier, V, Boulart, C, Bouruet-Aubertot, P, Gazeau, F, Scalabrin, C, Bressac Matthieu, K, Angela, N, Cuypers, Y, González-Santana, D, Forrer Heather, J, Grisoni, J, Grosso, O, Habasque, J, Jardin-Camps, M, Leblond, N, Le Moigne Frédéric, A, Lebourges-Dhaussy, A, Lory, C, Nunige, S, Pulido-Villena, E, Rizzo, A, Sarthou, G, Tilliette, C, 2. Bonnet Sophie, Guieu Cécile, Taillandier Vincent, Boulart Cédric, Bouruet-Aubertot Pascale, Gazeau Frédéric, Scalabrin Carla, Bressac Matthieu Knapp, Angela N., Cuypers Yannis, González-Santana David, Forrer Heather J., Grisoni Jean-Michel, Grosso Olivier, Habasque Jérémie, Jardin-Camps Mercedes, Leblond Nathalie, Le Moigne Frédéric A. C., Lebourges-Dhaussy Anne, Lory Caroline, Nunige Sandra, Pulido-Villena Elvira, Rizzo A, Sarthou Géraldine, and Tilliette Chloé

Abstract

Iron is an essential nutrient that regulates productivity in ~30% of the ocean. Compared with deep (>2000 meter) hydrothermal activity at mid-ocean ridges that provide iron to the ocean’s interior, shallow (<500 meter) hydrothermal fluids are likely to influence the surface’s ecosystem. However, their effect is unknown. In this work, we show that fluids emitted along the Tonga volcanic arc (South Pacific) have a substantial impact on iron concentrations in the photic layer through vertical diffusion. This enrichment stimulates biological activity, resulting in an extensive patch of chlorophyll (360,000 square kilometers). Diazotroph activity is two to eight times higher and carbon export fluxes are two to three times higher in iron-enriched waters than in adjacent unfertilized waters. Such findings reveal a previously undescribed mechanism of natural iron fertilization in the ocean that fuels regional hotspot sinks for atmospheric CO2.

Published
2023

9. Stable mercury concentrations in tunas from the global ocean arise question about monitoring the effectiveness of the Minamata Convention

Author

Médieu, Anaïs, primary, Point, David, additional, Sonke, Jeroen, additional, Buchanan, Pearse, additional, Bodin, Nathalie, additional, Adams, Douglas, additional, Bignert, Anders, additional, Streets, David, additional, Hélène, Angot, additional, Ménard, Frédéric, additional, Choy, C. Anela, additional, Allain, Valérie, additional, Itai, Takaaki, additional, Bustamante, Paco, additional, Ferriss, Bridget, additional, Bourlès, Bernard, additional, Habasque, Jérémie, additional, Gauthier, Olivier, additional, and Lorrain, Anne, additional

Published
2023
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10. International conference ICAWA 2017 and 2018 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters

Author

Perrot, Yannick, Brehmer, Patrice, Habasque, Jérémie, Roudaut, Gildas, Behagle, Nolwenn, Sarré, A., Diogoul, N., Lebourges Dhaussy, Anne, Brehmer, Patrice (ed.), Diogoul, N. (collab.), Zenk, C. (collab.), Vareilles, M. de (collab.), Keenlyside, N. (collab.), Nascimento, J.M. (collab.), Ramos, V. M. (collab.), Sow, B.A. (collab.), Fock, H. (collab.), Schmidt, J. (collab.), Ekau, W. (collab.), Mbaye, A. (collab.), Fall. A. (collab.), Monteiro, I. (collab.), Kouassi, A.M. (collab.), Silva, O. (collab.), Brochier, Timothée (collab.), Sall. M. (collab.), Mayif, M. (collab.), Koné, V. (collab.), Gorgues, Thomas (collab.), Ferreira Santos, C. (collab.), Bamy, I.L. (collab.), Barry, I. (collab.), Sidibe, M. (collab.), and Diadhou, H. (collab.)

Abstract

Matecho is an automated processing method to extract information and perform echo-integration and fish shoal extraction from various scientific echo-sounder sources providing digital acoustic data on fisheries and aquatic ecosystem. The open-source initiative helps foster collaboration and technological transfer. Matecho supports various formats, such as the international standard format for the exchange of fisheries acoustics raw and edited data. The procedure allows the semiautomatic cleaning of echogram data and the application of automatic data filters, i.e., transient noise, attenuated signal and impulsive noise removal and background noise reduction. Echo-integration processing is executed for each depth layer and integrates their characteristics per elementary sampling unit. Sound scattered layers are automatically detected by segmentation from the echo-integrated echogram, and shoals are extracted according to an iterative process of aggregation of filtered echogram echoes that allows, in both cases, the calculation of the ad hoc parameters describing morphological, spatial location and acoustic characteristics of sound scattered layers and shoals. Matecho is open-source software for researchers and provides end users with a user-friendly, free executable program.

Published
2019

11. Matecho : an open-source tool for processing fisheries acoustics data to facilitate collaborative development

Author

Perrot, Yannick, Brehmer, Patrice, Habasque, Jérémie, Roudaut, Gildas, Behagle, Nolwenn, Sarré, Abdoulaye, Diogoul, Ndague, Lebourges-Dhaussy, Anne, Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD), Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), Institut Sénégalais de Recherches Agricoles [Dakar] (ISRA), Brehmer, Patrice, and HORIZON, IRD

Subjects
[SDE.BE] Environmental Sciences/Biodiversity and Ecology, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDE.MCG] Environmental Sciences/Global Changes, AFRIQUE DE L'OUEST, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere, [SDE.MCG]Environmental Sciences/Global Changes, [INFO]Computer Science [cs], [INFO] Computer Science [cs], [SDE.BE]Environmental Sciences/Biodiversity and Ecology, ATLANTIQUE
Abstract

ICAWA : International Conference AWA, Lanzarote, ESP, 17-/04/2018 - 20/04/2018; Matecho is an automated processing method to extract information and perform echo-integration and fish shoal extraction from various scientific echo-sounder sources providing digital acoustic data on fisheries and aquatic ecosystem. The open-source initiative helps foster collaboration and technological transfer. Matecho supports various formats, such as the international standard format for the exchange of fisheries acoustics raw and edited data. The procedure allows the semiautomatic cleaning of echogram data and the application of automatic data filters, i.e., transient noise, attenuated signal and impulsive noise removal and background noise reduction. Echo-integration processing is executed for each depth layer and integrates their characteristics per elementary sampling unit. Sound scattered layers are automatically detected by segmentation from the echo-integrated echogram, and shoals are extracted according to an iterative process of aggregation of filtered echogram echoes that allows, in both cases, the calculation of the ad hoc parameters describing morphological, spatial location and acoustic characteristics of sound scattered layers and shoals. Matecho is open-source software for researchers and provides end users with a user-friendly, free executable program.

Published
2018

12. Inter-comparaison des mesures de courant dans l'Atlantique Tropical

Author

Habasque, Jérémie, Herbert, Gaelle, Habasque, Jérémie, and Herbert, Gaelle

Abstract

The present reports contains the results of a study designed to compare the current measurements from various sensors (ARGO floats, Drifters, Buoys sensors, ADCP) in Tropical Atlantic in order to estimate their complementarity and to analyse the seasonal cycle of surface and deep currents in the area., Ce rapport présente les résultats d'une étude visant à comparer les mesures de courant réalisées par différents capteurs (flotteurs ARGO, Drifters, Bouées fixes, ADCP) dans l'Altantique Tropical afin d'estimer leur complémentarité et d'analyser le cycle saisonnier des courants de surface et de fond dans la région.

Published
2018
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13. The Concept of 'Pelagic metapopulation' as exemplified by the case of jack mackerel Trachurus murphyi in the South Pacific Ocean

Author

Gerlotto, F, Hintzen, Niels T., Habasque, Jérémie, Corten, A, Gutierrez, Mariano, Arnaud, Bertrand, Institut de Recherche pour le Développement (IRD), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Universidad Nacional de Ingeniería (.) (UNI), UMR 212 EME 'écosystèmes marins exploités' (EME), and Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)

Subjects
[SDE.BE]Environmental Sciences/Biodiversity and Ecology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; no abstract

Published
2016

14. International conference ICAWA 2015 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters

Author

Machu, Eric, Capet, X., Donval, A., Mbaye, B.C., Habasque, Jérémie, Lazar, A., Brehmer, Patrice, Brehmer, Patrice (ed.), Ba, B. (ed.), Kraus, G. (ed.), Gomez, M.M. (collab.), Diogoul, N. (collab.), Brandt, P. (collab.), Sow, B.A. (collab.), Lazar, A. (collab.), Capet, X. (collab.), Fock, H. (collab.), Machu, Eric (collab.), Diadihou, H.D. (collab.), Jouffre, Didier (collab.), Diallo, I. (collab.), Schmidt, J. (collab.), Ekau, W. (collab.), Gaye, A. (collab.), Ould Taleb Sidi, M. (collab.), Thiaw, M. (collab.), Diop, C.A. (collab.), Mbaye, A. (collab.), Gouriou, Yves (collab.), Traore, D.B. (collab.), Sall, M. (collab.), Diara, M. (collab.), Fall. A. (collab.), Ly, I. (collab.), Monteiro, I. (collab.), Kone, V. (collab.), Toguyeni, A. (collab.), Bonnin, Marie (collab.), and Faraj, A. (collab.)

Published
2016

16. Multifrequency acoustics measurements during the PIRATA FR25 cruise in the Eastern Tropical Atlantic Ocean

Author

Habasque, Jérémie, Bourlès, Bernard, Machu, Eric, Brehmer, Patrice, Brehmer, Patrice (ed.), Ba, B. (ed.), Kraus, G. (ed.), Gomez, M.M. (collab.), Diogoul, N. (collab.), Brandt, P. (collab.), Sow, B.A. (collab.), Lazar, A. (collab.), Capet, X. (collab.), Fock, H. (collab.), Machu, Eric (collab.), Diadihou, H.D. (collab.), Jouffre, Didier (collab.), Diallo, I. (collab.), Schmidt, J. (collab.), Ekau, W. (collab.), Gaye, A. (collab.), Ould Taleb Sidi, M. (collab.), Thiaw, M. (collab.), Diop, C.A. (collab.), Mbaye, A. (collab.), Gouriou, Yves (collab.), Traore, D.B. (collab.), Sall, M. (collab.), Diara, M. (collab.), Fall. A. (collab.), Ly, I. (collab.), Monteiro, I. (collab.), Kone, V. (collab.), Toguyeni, A. (collab.), Bonnin, Marie (collab.), and Faraj, A. (collab.)

Published
2015
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17. Three‐dimensional conservation planning of fish biodiversity metrics to achieve the deep‐sea 30×30 conservation target.

Author

Mathon, Laetitia, Baletaud, Florian, Lebourges‐Dhaussy, Anne, Lecellier, Gaël, Menkes, Christophe, Bachelier, Céline, Bonneville, Claire, Dejean, Tony, Dumas, Mahé, Fiat, Sylvie, Grelet, Jacques, Habasque, Jérémie, Manel, Stéphanie, Mannocci, Laura, Mouillot, David, Peran, Maëlis, Roudaut, Gildas, Sidobre, Christine, Varillon, David, and Vigliola, Laurent

Subjects
*TECHNOLOGICAL innovations, *FISH conservation, *FISH communities, *ACOUSTIC models, *PROTECTED areas, *MARINE biodiversity, *BIODIVERSITY
Abstract

Accelerating rate of human impact and environmental change severely affects marine biodiversity and increases the urgency to implement the Convention on Biological Diversity (CBD) 30×30 plan for conserving 30% of sea areas by 2030. However, area‐based conservation targets are complex to identify in a 3‐dimensional (3D) ocean where deep‐sea features such as seamounts have been seldom studied mostly due to challenging methodologies to implement at great depths. Yet, the use of emerging technologies, such as environmental DNA combined with modern modeling frameworks, could help address the problem. We collected environmental DNA, echosounder acoustic, and video data at 15 seamounts and deep island slopes across the Coral Sea. We modeled 7 fish community metrics and the abundances of 45 individual species and molecular operational taxonomic units (MOTUs) in benthic and pelagic waters (down to 600‐m deep) with boosted regression trees and generalized joint attribute models to describe biodiversity on seamounts and deep slopes and identify 3D protection solutions for achieving the CBD area target in New Caledonia (1.4 million km2). We prioritized the identified conservation units in a 3D space, based on various biodiversity targets, to meet the goal of protecting at least 30% of the spatial domain, with a focus on areas with high biodiversity. The relationship between biodiversity protection targets and the spatial area protected by the solution was linear. The scenario protecting 30% of each biodiversity metric preserved almost 30% of the considered spatial domain and accounted for the 3D distribution of biodiversity. Our study paves the way for the use of combined data collection methodologies to improve biodiversity estimates in 3D structured marine environments for the selection of conservation areas and for the use of biodiversity targets to achieve area‐based international targets. [ABSTRACT FROM AUTHOR]

Published
2024
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18. Inter-comparaison des mesures de courant dans l'Atlantique Tropical

Author

Habasque, Jérémie and Herbert, Gaelle

Subjects
14. Life underwater
Abstract

The present reports contains the results of a study designed to compare the current measurements from various sensors (ARGO floats, Drifters, Buoys sensors, ADCP) in Tropical Atlantic in order to estimate their complementarity and to analyse the seasonal cycle of surface and deep currents in the area., Ce rapport présente les résultats d'une étude visant à comparer les mesures de courant réalisées par différents capteurs (flotteurs ARGO, Drifters, Bouées fixes, ADCP) dans l'Altantique Tropical afin d'estimer leur complémentarité et d'analyser le cycle saisonnier des courants de surface et de fond dans la région.

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