{"id":6466,"date":"2021-04-27T17:31:29","date_gmt":"2021-04-27T15:31:29","guid":{"rendered":"https:\/\/www.pure-ocean.org\/idefix\/"},"modified":"2026-01-15T11:00:47","modified_gmt":"2026-01-15T10:00:47","slug":"idefix","status":"publish","type":"page","link":"https:\/\/www.pure-ocean.org\/en\/idefix\/","title":{"rendered":"IDEFIX"},"content":{"rendered":"<p>[av_section min_height=&#8217;custom&#8217; min_height_px=&#8217;400px&#8217; padding=&#8217;default&#8217; shadow=&#8217;no-shadow&#8217; bottom_border=&#8217;no-border-styling&#8217; bottom_border_diagonal_color=&#8217;#333333&#8242; bottom_border_diagonal_direction=&#8221; bottom_border_style=&#8221; id=&#8221; color=&#8217;main_color&#8217; custom_bg=&#8221; src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/capricorn_oli_2019244_lrg-scaled.jpg&#8217; attachment=&#8217;7487&#8242; attachment_size=&#8217;full&#8217; attach=&#8217;parallax&#8217; position=&#8217;center center&#8217; repeat=&#8217;stretch&#8217; video=&#8221; video_ratio=&#8217;16:9&#8242; overlay_opacity=&#8217;0.5&#8242; overlay_color=&#8221; overlay_pattern=&#8221; overlay_custom_pattern=&#8221; av_element_hidden_in_editor=&#8217;0&#8242;][\/av_section]<\/p>\n<p>[av_three_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_button label=&#8217;AM\u00c9LIORER NOTRE CONNAISSANCE DU SYST\u00c8ME-OC\u00c9AN&#8217; link=&#8217;manually,&#8217; link_target=&#8221; size=&#8217;medium&#8217; position=&#8217;left&#8217; icon_select=&#8217;yes&#8217; icon_hover=&#8217;aviaTBicon_hover&#8217; icon=&#8217;ue8b1&#8242; font=&#8217;entypo-fontello&#8217; color=&#8217;custom&#8217; custom_bg=&#8217;#071562&#8242; custom_font=&#8217;#ffffff&#8217; admin_preview_bg=&#8221;]<\/p>\n<p>[av_hr class=&#8217;invisible&#8217; height=&#8217;25&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;]<\/p>\n<p>[av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#071562&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<\/p>\n<h1 style=\"text-align: left;\">IDEFIX<\/h1>\n<h3 style=\"text-align: left;\">Des petits organismes aux grands pouvoirs<\/h3>\n<p>[\/av_textblock]<br \/>\n[\/av_three_fifth]<\/p>\n<p>[av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_image src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2017\/09\/pictoDEF-01.png&#8217; attachment=&#8217;14075&#8242; attachment_size=&#8217;full&#8217; align=&#8217;center&#8217; styling=&#8221; hover=&#8221; link=&#8221; target=&#8221; caption=&#8221; font_size=&#8221; appearance=&#8221; overlay_opacity=&#8217;0.4&#8242; overlay_color=&#8217;#000000&#8242; overlay_text_color=&#8217;#ffffff&#8217; animation=&#8217;no-animation&#8217; admin_preview_bg=&#8221;][\/av_image]<br \/>\n[\/av_one_fifth]<\/p>\n<p>[av_one_fifth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;20px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_heading heading=&#8217;LOCALISATION&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading]<\/p>\n<p>[av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<br \/>\nOc\u00e9an Indien<br \/>\n[\/av_textblock]<br \/>\n[\/av_one_fifth]<\/p>\n<p>[av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;]<\/p>\n<p>[av_two_third first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<\/p>\n<h3 style=\"text-align: justify;\"><strong>L\u2019azote est un \u00e9l\u00e9ment indispensable \u00e0 tous les \u00eatres vivants. Dans l\u2019oc\u00e9an, les micro-organismes appel\u00e9s diazotrophes transforment l\u2019azote atmosph\u00e9rique dissous dans l\u2019eau (diazote, N2) en une forme utilisable par les plantes et animaux marins : on parle alors de \u201cfixation\u201d de l\u2019azote, un processus cl\u00e9 qui alimente toutes les cha\u00eenes alimentaires marines et permet la captation de CO2 \u00a0par l\u2019oc\u00e9an. Ce projet vise \u00e0 \u00e9tudier ce ph\u00e9nom\u00e8ne naturel en fonction des saisons de mousson dans l\u2019Oc\u00e9an Indien, le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde. Les chercheurs esp\u00e8rent \u00e9galement d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion.<\/strong><\/h3>\n<p>[\/av_textblock]<\/p>\n<p>[av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;]<\/p>\n<p>[av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Gr\u00e2ce au phytoplancton r\u00e9alisant la photosynth\u00e8se, l\u2019oc\u00e9an capte pr\u00e8s de 25% de nos \u00e9missions de CO<\/span><span style=\"font-weight: 400;\">2 <\/span><span style=\"font-weight: 400;\">chaque ann\u00e9e, et contribue donc \u00e0 limiter le r\u00e9chauffement climatique. Mais cette r\u00e9action n\u2019est possible que si le phytoplancton dispose d\u2019azote, un \u00e9l\u00e9ment essentiel \u00e0 tous les \u00eatres vivants. Les micro-organismes qui le leur fournissent sont appel\u00e9s diazotrophes : ils transforment le diazote (N<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">) dissous dans l\u2019eau en une forme assimilable par les autres organismes marins, un processus que l\u2019on appelle \u201cfixation de l\u2019azote\u201d et dont les m\u00e9canismes exacts sont encore peu connus selon les r\u00e9gions du monde.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Le projet IDEFIX \u00e9tudie la fixation d\u2019azote dans l\u2019Oc\u00e9an Indien en fonction des saisons de mousson. C\u2019est le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde, et d\u00e9crypter le r\u00f4le de l\u2019azote et des diazotrophes pourrait permettre d\u2019expliquer pourquoi. De nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion seront \u00e9galement \u00e0 d\u00e9couvrir lors de la Seconde Exp\u00e9dition Internationale dans l\u2019Oc\u00e9an Indien (2022).<\/span><\/p>\n<p>[\/av_textblock]<br \/>\n[\/av_two_third]<\/p>\n<p>[av_one_third min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_heading heading=&#8217;OBJECTIF DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading]<\/p>\n<p>[av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<br \/>\n<span style=\"font-weight: 400;\">D\u00e9crypter le r\u00f4le de la fixation du diazote (N<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">) en fonction des saisons de mousson et d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 l\u2019Oc\u00e9an Indien.<\/span><br \/>\n[\/av_textblock]<\/p>\n<p>[av_slideshow size=&#8217;portfolio&#8217; animation=&#8217;slide&#8217; autoplay=&#8217;true&#8217; interval=&#8217;6&#8242; control_layout=&#8217;av-control-default&#8217;]<br \/>\n[av_slide slide_type=&#8217;image&#8217; id=&#8217;16615&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide]<br \/>\n[av_slide slide_type=&#8217;image&#8217; id=&#8217;16611&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide]<br \/>\n[av_slide id=&#8217;16157&#8242; slide_type=&#8221; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221; title=&#8221; link_apply=&#8221; link=&#8221; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221;][\/av_slide]<br \/>\n[av_slide slide_type=&#8217;image&#8217; id=&#8217;16161&#8242; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide]<br \/>\n[av_slide slide_type=&#8217;image&#8217; id=&#8217;16613&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide]<br \/>\n[\/av_slideshow]<br \/>\n[\/av_one_third]<\/p>\n<p>[av_hr class=&#8217;default&#8217; height=&#8217;30&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;]<\/p>\n<p>[av_one_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth]<\/p>\n<p>[av_three_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_video src=&#8217;https:\/\/youtu.be\/_EPdu7LmTZk&#8217; format=&#8217;16-9&#8242; width=&#8217;16&#8217; height=&#8217;9&#8242;]<br \/>\n[\/av_three_fifth]<\/p>\n<p>[av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth]<\/p>\n<p>[av_one_half first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_heading heading=&#8217;PORTEURS DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading]<br \/>\n[\/av_one_half]<\/p>\n<p>[av_one_half min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_heading heading=&#8217;PARTENAIRES SCIENTIFIQUES&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading]<br \/>\n[\/av_one_half]<\/p>\n<p>[av_one_fourth first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<br \/>\n<img decoding=\"async\" class=\"aligncenter wp-image-7533\" src=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg\" alt=\"\" width=\"182\" height=\"182\" srcset=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg 512w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo-300x300.jpg 300w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo-80x80.jpg 80w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo-36x36.jpg 36w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo-180x180.jpg 180w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo-120x120.jpg 120w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo-450x450.jpg 450w\" sizes=\"(max-width: 182px) 100vw, 182px\" \/>Mar Benavides, charg\u00e9e de recherche IRD \u00e0 l\u2019Institut M\u00e9diterran\u00e9en d\u2019Oc\u00e9anologie (MIO), Marseille, France.<br \/>\n[\/av_textblock]<br \/>\n[\/av_one_fourth]<\/p>\n<p>[av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<br \/>\n<img decoding=\"async\" class=\"aligncenter wp-image-7535 size-square\" src=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1-180x180.jpeg\" alt=\"\" width=\"180\" height=\"180\" srcset=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1-180x180.jpeg 180w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1-300x300.jpeg 300w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1-80x80.jpeg 80w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1-36x36.jpeg 36w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1-120x120.jpeg 120w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/WhatsApp-Image-2021-09-08-at-21.40.43-2-1.jpeg 306w\" sizes=\"(max-width: 180px) 100vw, 180px\" \/>Subhadeep Chowdhury, doctorant \u00e0 l\u2019Universit\u00e9 d\u2019Aix-Marseille, France.<br \/>\n[\/av_textblock]<br \/>\n[\/av_one_fourth]<\/p>\n<p>[av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;]<br \/>\n[av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;]<br \/>\n<span style=\"font-weight: 400;\"><img decoding=\"async\" class=\"aligncenter wp-image-7536 size-square\" src=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Arvind-photo-180x180.jpg\" alt=\"\" width=\"180\" height=\"180\" srcset=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Arvind-photo-180x180.jpg 180w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Arvind-photo-80x80.jpg 80w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Arvind-photo-36x36.jpg 36w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Arvind-photo-431x430.jpg 431w, https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Arvind-photo-120x120.jpg 120w\" sizes=\"(max-width: 180px) 100vw, 180px\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Dr. Arvind Singh, ma\u00eetre de conf\u00e9rences au Physical Research Laboratory (PRL) \u00e0 Ahmedabad, Inde.<\/span><br \/>\n[\/av_textblock]<br \/>\n[\/av_one_fourth]<\/p>\n<p>[av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;]<\/p>\n<p>[av_partner columns=&#8217;4&#8242; heading=&#8221; size=&#8217;no scaling&#8217; border=&#8217;av-border-deactivate&#8217; type=&#8217;grid&#8217; animation=&#8217;slide&#8217; navigation=&#8217;arrows&#8217; autoplay=&#8217;false&#8217; interval=&#8217;5&#8242;]<br \/>\n[av_partner_logo id=&#8217;7530&#8242; hover=&#8221; link=&#8221; linktitle=&#8221; link_target=&#8217;_blank&#8217;]<br \/>\n[av_partner_logo id=&#8217;7532&#8242; hover=&#8221; link=&#8221; linktitle=&#8221; link_target=&#8217;_blank&#8217;]<br \/>\n[av_partner_logo id=&#8217;7526&#8242; hover=&#8221; link=&#8221; linktitle=&#8221; link_target=&#8217;_blank&#8217;]<br \/>\n[av_partner_logo id=&#8217;7529&#8242; hover=&#8221; link=&#8221; linktitle=&#8221; link_target=&#8217;_blank&#8217;]<br \/>\n[\/av_partner]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[av_section min_height=&#8217;custom&#8217; min_height_px=&#8217;400px&#8217; padding=&#8217;default&#8217; shadow=&#8217;no-shadow&#8217; bottom_border=&#8217;no-border-styling&#8217; bottom_border_diagonal_color=&#8217;#333333&#8242; bottom_border_diagonal_direction=&#8221; bottom_border_style=&#8221; id=&#8221; color=&#8217;main_color&#8217; custom_bg=&#8221; src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/capricorn_oli_2019244_lrg-scaled.jpg&#8217; attachment=&#8217;7487&#8242; attachment_size=&#8217;full&#8217; attach=&#8217;parallax&#8217; position=&#8217;center center&#8217; repeat=&#8217;stretch&#8217; video=&#8221; video_ratio=&#8217;16:9&#8242; overlay_opacity=&#8217;0.5&#8242; overlay_color=&#8221; overlay_pattern=&#8221; overlay_custom_pattern=&#8221; av_element_hidden_in_editor=&#8217;0&#8242;][\/av_section] [av_three_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_button label=&#8217;AM\u00c9LIORER NOTRE CONNAISSANCE DU SYST\u00c8ME-OC\u00c9AN&#8217; link=&#8217;manually,&#8217; link_target=&#8221; size=&#8217;medium&#8217; position=&#8217;left&#8217; icon_select=&#8217;yes&#8217; icon_hover=&#8217;aviaTBicon_hover&#8217; icon=&#8217;ue8b1&#8242; font=&#8217;entypo-fontello&#8217; color=&#8217;custom&#8217; custom_bg=&#8217;#071562&#8242; custom_font=&#8217;#ffffff&#8217; admin_preview_bg=&#8221;] [av_hr class=&#8217;invisible&#8217; height=&#8217;25&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#071562&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] IDEFIX Des petits organismes aux grands pouvoirs [\/av_textblock] [\/av_three_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_image src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2017\/09\/pictoDEF-01.png&#8217; attachment=&#8217;14075&#8242; attachment_size=&#8217;full&#8217; align=&#8217;center&#8217; styling=&#8221; hover=&#8221; link=&#8221; target=&#8221; caption=&#8221; font_size=&#8221; appearance=&#8221; overlay_opacity=&#8217;0.4&#8242; overlay_color=&#8217;#000000&#8242; overlay_text_color=&#8217;#ffffff&#8217; animation=&#8217;no-animation&#8217; admin_preview_bg=&#8221;][\/av_image] [\/av_one_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;20px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;LOCALISATION&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Oc\u00e9an Indien [\/av_textblock] [\/av_one_fifth] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_two_third first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] L\u2019azote est un \u00e9l\u00e9ment indispensable \u00e0 tous les \u00eatres vivants. Dans l\u2019oc\u00e9an, les micro-organismes appel\u00e9s diazotrophes transforment l\u2019azote atmosph\u00e9rique dissous dans l\u2019eau (diazote, N2) en une forme utilisable par les plantes et animaux marins : on parle alors de \u201cfixation\u201d de l\u2019azote, un processus cl\u00e9 qui alimente toutes les cha\u00eenes alimentaires marines et permet la captation de CO2 \u00a0par l\u2019oc\u00e9an. Ce projet vise \u00e0 \u00e9tudier ce ph\u00e9nom\u00e8ne naturel en fonction des saisons de mousson dans l\u2019Oc\u00e9an Indien, le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde. Les chercheurs esp\u00e8rent \u00e9galement d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion. [\/av_textblock] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Gr\u00e2ce au phytoplancton r\u00e9alisant la photosynth\u00e8se, l\u2019oc\u00e9an capte pr\u00e8s de 25% de nos \u00e9missions de CO2 chaque ann\u00e9e, et contribue donc \u00e0 limiter le r\u00e9chauffement climatique. Mais cette r\u00e9action n\u2019est possible que si le phytoplancton dispose d\u2019azote, un \u00e9l\u00e9ment essentiel \u00e0 tous les \u00eatres vivants. Les micro-organismes qui le leur fournissent sont appel\u00e9s diazotrophes : ils transforment le diazote (N2) dissous dans l\u2019eau en une forme assimilable par les autres organismes marins, un processus que l\u2019on appelle \u201cfixation de l\u2019azote\u201d et dont les m\u00e9canismes exacts sont encore peu connus selon les r\u00e9gions du monde. Le projet IDEFIX \u00e9tudie la fixation d\u2019azote dans l\u2019Oc\u00e9an Indien en fonction des saisons de mousson. C\u2019est le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde, et d\u00e9crypter le r\u00f4le de l\u2019azote et des diazotrophes pourrait permettre d\u2019expliquer pourquoi. De nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion seront \u00e9galement \u00e0 d\u00e9couvrir lors de la Seconde Exp\u00e9dition Internationale dans l\u2019Oc\u00e9an Indien (2022). [\/av_textblock] [\/av_two_third] [av_one_third min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;OBJECTIF DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] D\u00e9crypter le r\u00f4le de la fixation du diazote (N2) en fonction des saisons de mousson et d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 l\u2019Oc\u00e9an Indien. [\/av_textblock] [av_slideshow size=&#8217;portfolio&#8217; animation=&#8217;slide&#8217; autoplay=&#8217;true&#8217; interval=&#8217;6&#8242; control_layout=&#8217;av-control-default&#8217;] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16615&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16611&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide id=&#8217;16157&#8242; slide_type=&#8221; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221; title=&#8221; link_apply=&#8221; link=&#8221; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16161&#8242; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16613&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [\/av_slideshow] [\/av_one_third] [av_hr class=&#8217;default&#8217; height=&#8217;30&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_one_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth] [av_three_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_video src=&#8217;https:\/\/youtu.be\/_EPdu7LmTZk&#8217; format=&#8217;16-9&#8242; width=&#8217;16&#8217; height=&#8217;9&#8242;] [\/av_three_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth] [av_one_half first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;PORTEURS DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [\/av_one_half] [av_one_half min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;PARTENAIRES SCIENTIFIQUES&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [\/av_one_half] [av_one_fourth first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Mar Benavides, charg\u00e9e de recherche IRD \u00e0 l\u2019Institut M\u00e9diterran\u00e9en d\u2019Oc\u00e9anologie (MIO), Marseille, France. [\/av_textblock] [\/av_one_fourth] [av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Subhadeep Chowdhury, doctorant \u00e0 l\u2019Universit\u00e9 d\u2019Aix-Marseille, France. [\/av_textblock] [\/av_one_fourth] [av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Dr. Arvind Singh, ma\u00eetre de conf\u00e9rences au Physical Research Laboratory (PRL) \u00e0 Ahmedabad, Inde. [\/av_textblock] [\/av_one_fourth] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"class_list":["post-6466","page","type-page","status-publish","hentry"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>IDEFIX - Pure Ocean<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pure-ocean.org\/en\/idefix\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IDEFIX - Pure Ocean\" \/>\n<meta property=\"og:description\" content=\"[av_section min_height=&#8217;custom&#8217; min_height_px=&#8217;400px&#8217; padding=&#8217;default&#8217; shadow=&#8217;no-shadow&#8217; bottom_border=&#8217;no-border-styling&#8217; bottom_border_diagonal_color=&#8217;#333333&#8242; bottom_border_diagonal_direction=&#8221; bottom_border_style=&#8221; id=&#8221; color=&#8217;main_color&#8217; custom_bg=&#8221; src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/capricorn_oli_2019244_lrg-scaled.jpg&#8217; attachment=&#8217;7487&#8242; attachment_size=&#8217;full&#8217; attach=&#8217;parallax&#8217; position=&#8217;center center&#8217; repeat=&#8217;stretch&#8217; video=&#8221; video_ratio=&#8217;16:9&#8242; overlay_opacity=&#8217;0.5&#8242; overlay_color=&#8221; overlay_pattern=&#8221; overlay_custom_pattern=&#8221; av_element_hidden_in_editor=&#8217;0&#8242;][\/av_section] [av_three_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_button label=&#8217;AM\u00c9LIORER NOTRE CONNAISSANCE DU SYST\u00c8ME-OC\u00c9AN&#8217; link=&#8217;manually,&#8217; link_target=&#8221; size=&#8217;medium&#8217; position=&#8217;left&#8217; icon_select=&#8217;yes&#8217; icon_hover=&#8217;aviaTBicon_hover&#8217; icon=&#8217;ue8b1&#8242; font=&#8217;entypo-fontello&#8217; color=&#8217;custom&#8217; custom_bg=&#8217;#071562&#8242; custom_font=&#8217;#ffffff&#8217; admin_preview_bg=&#8221;] [av_hr class=&#8217;invisible&#8217; height=&#8217;25&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#071562&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] IDEFIX Des petits organismes aux grands pouvoirs [\/av_textblock] [\/av_three_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_image src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2017\/09\/pictoDEF-01.png&#8217; attachment=&#8217;14075&#8242; attachment_size=&#8217;full&#8217; align=&#8217;center&#8217; styling=&#8221; hover=&#8221; link=&#8221; target=&#8221; caption=&#8221; font_size=&#8221; appearance=&#8221; overlay_opacity=&#8217;0.4&#8242; overlay_color=&#8217;#000000&#8242; overlay_text_color=&#8217;#ffffff&#8217; animation=&#8217;no-animation&#8217; admin_preview_bg=&#8221;][\/av_image] [\/av_one_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;20px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;LOCALISATION&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Oc\u00e9an Indien [\/av_textblock] [\/av_one_fifth] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_two_third first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] L\u2019azote est un \u00e9l\u00e9ment indispensable \u00e0 tous les \u00eatres vivants. Dans l\u2019oc\u00e9an, les micro-organismes appel\u00e9s diazotrophes transforment l\u2019azote atmosph\u00e9rique dissous dans l\u2019eau (diazote, N2) en une forme utilisable par les plantes et animaux marins : on parle alors de \u201cfixation\u201d de l\u2019azote, un processus cl\u00e9 qui alimente toutes les cha\u00eenes alimentaires marines et permet la captation de CO2 \u00a0par l\u2019oc\u00e9an. Ce projet vise \u00e0 \u00e9tudier ce ph\u00e9nom\u00e8ne naturel en fonction des saisons de mousson dans l\u2019Oc\u00e9an Indien, le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde. Les chercheurs esp\u00e8rent \u00e9galement d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion. [\/av_textblock] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Gr\u00e2ce au phytoplancton r\u00e9alisant la photosynth\u00e8se, l\u2019oc\u00e9an capte pr\u00e8s de 25% de nos \u00e9missions de CO2 chaque ann\u00e9e, et contribue donc \u00e0 limiter le r\u00e9chauffement climatique. Mais cette r\u00e9action n\u2019est possible que si le phytoplancton dispose d\u2019azote, un \u00e9l\u00e9ment essentiel \u00e0 tous les \u00eatres vivants. Les micro-organismes qui le leur fournissent sont appel\u00e9s diazotrophes : ils transforment le diazote (N2) dissous dans l\u2019eau en une forme assimilable par les autres organismes marins, un processus que l\u2019on appelle \u201cfixation de l\u2019azote\u201d et dont les m\u00e9canismes exacts sont encore peu connus selon les r\u00e9gions du monde. Le projet IDEFIX \u00e9tudie la fixation d\u2019azote dans l\u2019Oc\u00e9an Indien en fonction des saisons de mousson. C\u2019est le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde, et d\u00e9crypter le r\u00f4le de l\u2019azote et des diazotrophes pourrait permettre d\u2019expliquer pourquoi. De nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion seront \u00e9galement \u00e0 d\u00e9couvrir lors de la Seconde Exp\u00e9dition Internationale dans l\u2019Oc\u00e9an Indien (2022). [\/av_textblock] [\/av_two_third] [av_one_third min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;OBJECTIF DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] D\u00e9crypter le r\u00f4le de la fixation du diazote (N2) en fonction des saisons de mousson et d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 l\u2019Oc\u00e9an Indien. [\/av_textblock] [av_slideshow size=&#8217;portfolio&#8217; animation=&#8217;slide&#8217; autoplay=&#8217;true&#8217; interval=&#8217;6&#8242; control_layout=&#8217;av-control-default&#8217;] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16615&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16611&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide id=&#8217;16157&#8242; slide_type=&#8221; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221; title=&#8221; link_apply=&#8221; link=&#8221; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16161&#8242; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16613&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [\/av_slideshow] [\/av_one_third] [av_hr class=&#8217;default&#8217; height=&#8217;30&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_one_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth] [av_three_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_video src=&#8217;https:\/\/youtu.be\/_EPdu7LmTZk&#8217; format=&#8217;16-9&#8242; width=&#8217;16&#8217; height=&#8217;9&#8242;] [\/av_three_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth] [av_one_half first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;PORTEURS DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [\/av_one_half] [av_one_half min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;PARTENAIRES SCIENTIFIQUES&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [\/av_one_half] [av_one_fourth first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Mar Benavides, charg\u00e9e de recherche IRD \u00e0 l\u2019Institut M\u00e9diterran\u00e9en d\u2019Oc\u00e9anologie (MIO), Marseille, France. [\/av_textblock] [\/av_one_fourth] [av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Subhadeep Chowdhury, doctorant \u00e0 l\u2019Universit\u00e9 d\u2019Aix-Marseille, France. [\/av_textblock] [\/av_one_fourth] [av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Dr. Arvind Singh, ma\u00eetre de conf\u00e9rences au Physical Research Laboratory (PRL) \u00e0 Ahmedabad, Inde. [\/av_textblock] [\/av_one_fourth] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pure-ocean.org\/en\/idefix\/\" \/>\n<meta property=\"og:site_name\" content=\"Pure Ocean\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/PureOceanFund\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-15T10:00:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@PureOceanFund\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/\",\"url\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/\",\"name\":\"IDEFIX - Pure Ocean\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.pure-ocean.org\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/Mar-photo.jpg\",\"datePublished\":\"2021-04-27T15:31:29+00:00\",\"dateModified\":\"2026-01-15T10:00:47+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.pure-ocean.org\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/Mar-photo.jpg\",\"contentUrl\":\"https:\\\/\\\/www.pure-ocean.org\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/Mar-photo.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/idefix\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"IDEFIX\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/\",\"name\":\"Pure Ocean\",\"description\":\"L&#039;innovation au service de l&#039;oc\u00e9an\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/#organization\",\"name\":\"Pure Ocean\",\"url\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.pure-ocean.org\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/LOGO-FINAL-carre-03.png\",\"contentUrl\":\"https:\\\/\\\/www.pure-ocean.org\\\/wp-content\\\/uploads\\\/2022\\\/01\\\/LOGO-FINAL-carre-03.png\",\"width\":472,\"height\":472,\"caption\":\"Pure Ocean\"},\"image\":{\"@id\":\"https:\\\/\\\/www.pure-ocean.org\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/PureOceanFund\\\/\",\"https:\\\/\\\/x.com\\\/PureOceanFund\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/27024658\\\/admin\\\/\",\"https:\\\/\\\/www.instagram.com\\\/pureoceanfund\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"IDEFIX - Pure Ocean","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.pure-ocean.org\/en\/idefix\/","og_locale":"en_US","og_type":"article","og_title":"IDEFIX - Pure Ocean","og_description":"[av_section min_height=&#8217;custom&#8217; min_height_px=&#8217;400px&#8217; padding=&#8217;default&#8217; shadow=&#8217;no-shadow&#8217; bottom_border=&#8217;no-border-styling&#8217; bottom_border_diagonal_color=&#8217;#333333&#8242; bottom_border_diagonal_direction=&#8221; bottom_border_style=&#8221; id=&#8221; color=&#8217;main_color&#8217; custom_bg=&#8221; src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/capricorn_oli_2019244_lrg-scaled.jpg&#8217; attachment=&#8217;7487&#8242; attachment_size=&#8217;full&#8217; attach=&#8217;parallax&#8217; position=&#8217;center center&#8217; repeat=&#8217;stretch&#8217; video=&#8221; video_ratio=&#8217;16:9&#8242; overlay_opacity=&#8217;0.5&#8242; overlay_color=&#8221; overlay_pattern=&#8221; overlay_custom_pattern=&#8221; av_element_hidden_in_editor=&#8217;0&#8242;][\/av_section] [av_three_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_button label=&#8217;AM\u00c9LIORER NOTRE CONNAISSANCE DU SYST\u00c8ME-OC\u00c9AN&#8217; link=&#8217;manually,&#8217; link_target=&#8221; size=&#8217;medium&#8217; position=&#8217;left&#8217; icon_select=&#8217;yes&#8217; icon_hover=&#8217;aviaTBicon_hover&#8217; icon=&#8217;ue8b1&#8242; font=&#8217;entypo-fontello&#8217; color=&#8217;custom&#8217; custom_bg=&#8217;#071562&#8242; custom_font=&#8217;#ffffff&#8217; admin_preview_bg=&#8221;] [av_hr class=&#8217;invisible&#8217; height=&#8217;25&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#071562&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] IDEFIX Des petits organismes aux grands pouvoirs [\/av_textblock] [\/av_three_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_image src=&#8217;https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2017\/09\/pictoDEF-01.png&#8217; attachment=&#8217;14075&#8242; attachment_size=&#8217;full&#8217; align=&#8217;center&#8217; styling=&#8221; hover=&#8221; link=&#8221; target=&#8221; caption=&#8221; font_size=&#8221; appearance=&#8221; overlay_opacity=&#8217;0.4&#8242; overlay_color=&#8217;#000000&#8242; overlay_text_color=&#8217;#ffffff&#8217; animation=&#8217;no-animation&#8217; admin_preview_bg=&#8221;][\/av_image] [\/av_one_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;20px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;LOCALISATION&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Oc\u00e9an Indien [\/av_textblock] [\/av_one_fifth] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_two_third first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] L\u2019azote est un \u00e9l\u00e9ment indispensable \u00e0 tous les \u00eatres vivants. Dans l\u2019oc\u00e9an, les micro-organismes appel\u00e9s diazotrophes transforment l\u2019azote atmosph\u00e9rique dissous dans l\u2019eau (diazote, N2) en une forme utilisable par les plantes et animaux marins : on parle alors de \u201cfixation\u201d de l\u2019azote, un processus cl\u00e9 qui alimente toutes les cha\u00eenes alimentaires marines et permet la captation de CO2 \u00a0par l\u2019oc\u00e9an. Ce projet vise \u00e0 \u00e9tudier ce ph\u00e9nom\u00e8ne naturel en fonction des saisons de mousson dans l\u2019Oc\u00e9an Indien, le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde. Les chercheurs esp\u00e8rent \u00e9galement d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion. [\/av_textblock] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Gr\u00e2ce au phytoplancton r\u00e9alisant la photosynth\u00e8se, l\u2019oc\u00e9an capte pr\u00e8s de 25% de nos \u00e9missions de CO2 chaque ann\u00e9e, et contribue donc \u00e0 limiter le r\u00e9chauffement climatique. Mais cette r\u00e9action n\u2019est possible que si le phytoplancton dispose d\u2019azote, un \u00e9l\u00e9ment essentiel \u00e0 tous les \u00eatres vivants. Les micro-organismes qui le leur fournissent sont appel\u00e9s diazotrophes : ils transforment le diazote (N2) dissous dans l\u2019eau en une forme assimilable par les autres organismes marins, un processus que l\u2019on appelle \u201cfixation de l\u2019azote\u201d et dont les m\u00e9canismes exacts sont encore peu connus selon les r\u00e9gions du monde. Le projet IDEFIX \u00e9tudie la fixation d\u2019azote dans l\u2019Oc\u00e9an Indien en fonction des saisons de mousson. C\u2019est le bassin oc\u00e9anique se r\u00e9chauffant le plus vite au monde, et d\u00e9crypter le r\u00f4le de l\u2019azote et des diazotrophes pourrait permettre d\u2019expliquer pourquoi. De nouvelles esp\u00e8ces de diazotrophes propres \u00e0 cette r\u00e9gion seront \u00e9galement \u00e0 d\u00e9couvrir lors de la Seconde Exp\u00e9dition Internationale dans l\u2019Oc\u00e9an Indien (2022). [\/av_textblock] [\/av_two_third] [av_one_third min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;OBJECTIF DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] D\u00e9crypter le r\u00f4le de la fixation du diazote (N2) en fonction des saisons de mousson et d\u00e9couvrir de nouvelles esp\u00e8ces de diazotrophes propres \u00e0 l\u2019Oc\u00e9an Indien. [\/av_textblock] [av_slideshow size=&#8217;portfolio&#8217; animation=&#8217;slide&#8217; autoplay=&#8217;true&#8217; interval=&#8217;6&#8242; control_layout=&#8217;av-control-default&#8217;] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16615&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16611&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide id=&#8217;16157&#8242; slide_type=&#8221; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221; title=&#8221; link_apply=&#8221; link=&#8221; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16161&#8242; video=&#8217;http:\/\/&#8217; mobile_image=&#8221; video_ratio=&#8217;16:9&#8242; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [av_slide slide_type=&#8217;image&#8217; id=&#8217;16613&#8242; video=&#8221; mobile_image=&#8221; video_ratio=&#8221; title=&#8221; link_apply=&#8221; link=&#8217;lightbox&#8217; link_target=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; video_controls=&#8221; video_mute=&#8221; video_loop=&#8221; video_autoplay=&#8221;][\/av_slide] [\/av_slideshow] [\/av_one_third] [av_hr class=&#8217;default&#8217; height=&#8217;30&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221; icon=&#8217;ue808&#8242; font=&#8217;entypo-fontello&#8217; admin_preview_bg=&#8221;] [av_one_fifth first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth] [av_three_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_video src=&#8217;https:\/\/youtu.be\/_EPdu7LmTZk&#8217; format=&#8217;16-9&#8242; width=&#8217;16&#8217; height=&#8217;9&#8242;] [\/av_three_fifth] [av_one_fifth min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;][\/av_one_fifth] [av_one_half first min_height=&#8221; vertical_alignment=&#8221; space=&#8221; custom_margin=&#8221; margin=&#8217;0px&#8217; padding=&#8217;0px&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; background_color=&#8221; src=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;PORTEURS DU PROJET&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;0&#8242; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [\/av_one_half] [av_one_half min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_heading heading=&#8217;PARTENAIRES SCIENTIFIQUES&#8217; tag=&#8217;h3&#8242; style=&#8221; size=&#8221; subheading_active=&#8221; subheading_size=&#8217;15&#8217; padding=&#8217;10&#8217; color=&#8221; custom_font=&#8221; av-medium-font-size-title=&#8221; av-small-font-size-title=&#8221; av-mini-font-size-title=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;][\/av_heading] [\/av_one_half] [av_one_fourth first min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Mar Benavides, charg\u00e9e de recherche IRD \u00e0 l\u2019Institut M\u00e9diterran\u00e9en d\u2019Oc\u00e9anologie (MIO), Marseille, France. [\/av_textblock] [\/av_one_fourth] [av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8217;custom&#8217; color=&#8217;#000000&#8242; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Subhadeep Chowdhury, doctorant \u00e0 l\u2019Universit\u00e9 d\u2019Aix-Marseille, France. [\/av_textblock] [\/av_one_fourth] [av_one_fourth min_height=&#8221; vertical_alignment=&#8217;av-align-top&#8217; space=&#8221; custom_margin=&#8217;aviaTBcustom_margin&#8217; margin=&#8217;0px&#8217; margin_sync=&#8217;true&#8217; padding=&#8217;0px&#8217; padding_sync=&#8217;true&#8217; border=&#8221; border_color=&#8221; radius=&#8217;0px&#8217; radius_sync=&#8217;true&#8217; background_color=&#8221; src=&#8221; attachment=&#8221; attachment_size=&#8221; background_position=&#8217;top left&#8217; background_repeat=&#8217;no-repeat&#8217; animation=&#8221; mobile_breaking=&#8221; mobile_display=&#8221;] [av_textblock size=&#8221; font_color=&#8221; color=&#8221; av-medium-font-size=&#8221; av-small-font-size=&#8221; av-mini-font-size=&#8221; admin_preview_bg=&#8221;] Dr. Arvind Singh, ma\u00eetre de conf\u00e9rences au Physical Research Laboratory (PRL) \u00e0 Ahmedabad, Inde. [\/av_textblock] [\/av_one_fourth] [av_hr class=&#8217;default&#8217; height=&#8217;50&#8217; shadow=&#8217;no-shadow&#8217; position=&#8217;center&#8217; custom_border=&#8217;av-border-thin&#8217; custom_width=&#8217;50px&#8217; custom_border_color=&#8221; custom_margin_top=&#8217;30px&#8217; custom_margin_bottom=&#8217;30px&#8217; icon_select=&#8217;yes&#8217; custom_icon_color=&#8221;","og_url":"https:\/\/www.pure-ocean.org\/en\/idefix\/","og_site_name":"Pure Ocean","article_publisher":"https:\/\/www.facebook.com\/PureOceanFund\/","article_modified_time":"2026-01-15T10:00:47+00:00","og_image":[{"url":"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_site":"@PureOceanFund","twitter_misc":{"Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.pure-ocean.org\/en\/idefix\/","url":"https:\/\/www.pure-ocean.org\/en\/idefix\/","name":"IDEFIX - Pure Ocean","isPartOf":{"@id":"https:\/\/www.pure-ocean.org\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.pure-ocean.org\/en\/idefix\/#primaryimage"},"image":{"@id":"https:\/\/www.pure-ocean.org\/en\/idefix\/#primaryimage"},"thumbnailUrl":"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg","datePublished":"2021-04-27T15:31:29+00:00","dateModified":"2026-01-15T10:00:47+00:00","breadcrumb":{"@id":"https:\/\/www.pure-ocean.org\/en\/idefix\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.pure-ocean.org\/en\/idefix\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.pure-ocean.org\/en\/idefix\/#primaryimage","url":"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg","contentUrl":"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2021\/12\/Mar-photo.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/www.pure-ocean.org\/en\/idefix\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.pure-ocean.org\/en\/"},{"@type":"ListItem","position":2,"name":"IDEFIX"}]},{"@type":"WebSite","@id":"https:\/\/www.pure-ocean.org\/en\/#website","url":"https:\/\/www.pure-ocean.org\/en\/","name":"Pure Ocean","description":"L&#039;innovation au service de l&#039;oc\u00e9an","publisher":{"@id":"https:\/\/www.pure-ocean.org\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.pure-ocean.org\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.pure-ocean.org\/en\/#organization","name":"Pure Ocean","url":"https:\/\/www.pure-ocean.org\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.pure-ocean.org\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2022\/01\/LOGO-FINAL-carre-03.png","contentUrl":"https:\/\/www.pure-ocean.org\/wp-content\/uploads\/2022\/01\/LOGO-FINAL-carre-03.png","width":472,"height":472,"caption":"Pure Ocean"},"image":{"@id":"https:\/\/www.pure-ocean.org\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/PureOceanFund\/","https:\/\/x.com\/PureOceanFund","https:\/\/www.linkedin.com\/company\/27024658\/admin\/","https:\/\/www.instagram.com\/pureoceanfund\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/pages\/6466","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/comments?post=6466"}],"version-history":[{"count":14,"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/pages\/6466\/revisions"}],"predecessor-version":[{"id":19434,"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/pages\/6466\/revisions\/19434"}],"wp:attachment":[{"href":"https:\/\/www.pure-ocean.org\/en\/wp-json\/wp\/v2\/media?parent=6466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}