We aim to figure out if phytoplankton-derived organic compounds trigger nitrogen fixation by heterotrophs, which would be another nice example of soft mutualism. This is part of the SUMMIT ERC-Advanced Grant

#SUMMIT_Moorea - Day 6 The day began with launching and sampling the tank experiment before dawn. Addition of organic compounds and isotopically labelled nitrogen to plankton to track nitrogen fixation. Fran Fran Cornejo and Clara Ruiz-González taking the lead under red lamps.

In parallel, under shinning sun, JB Raina from UTSydney and Jeff Jean-François Mangot prepared in situ chemotaxis assays (ISCA) to test if bacteria and phytoplankton are attracted to each other's chemicals. Rafel placed the ISCAS on the seabed for steadiness.

#SUMMIT_ Moorea - Day 7 Leisure day in Moorea, a break between experiments. Forests, waterfalls, beaches, and stunning landscapes.

#SUMMIT_Moorea - Day 7 New day of reef water collection. The team was splitted into two groups. The white boat, leaded by Clara Ruiz-González, Fran Cornejo and Elena Cerdán, aimed to incubate the seawater with different algal chemical compounds to look for bacterial answers.

#SUMMIT_Moorea - Day 7 While, the blue boat team, leaded by simolab, Nestor Arandia-Gorostidi, Jean-François Mangot and JB Raina went to set up a chemotaxis experiment to see if planktonic organisms are attracted to certain chemical compounds. #SUMMIT_ERCAdG #Moorea #Frenchpolynesia

#SUMMIT_Moorea - Day 9 Below the sea skin, the coral-shaped architecture provides an astounding landscape for our in situ chemotaxis experiments with microbial plankton

#SUMMIT_Moorea - Day 10 Still another experiment with reef lagoon waters on the effects of algal compounds on bacteria, with measurements of #nitrogen_fixation, metabarcoding, and #metatranscriptomes, among other things.

SUMMIT_Moorea - Day 11 Rafel paddled the kayak to the reef crest and tossed in a couple of coconuts to "measure" the speed of the current. The casual drifters indicated that it takes only 1.5-2h for the water to cross the 800 m long back-reef lagoon to the outflow channel.

#SUMMIT_Moorea - Day 13 The countdown begins for the end of the SUMMIT-Moorea campaign. Few days left at the island! Finishing the last samplings and experiments and enjoying the island. #SUMMIT_ERCAdG #lastdays #island #frenchpolynesia

#SUMMIT_Moorea - Day 14 Great work with an amazing group, mutualism at work. The #nitrogen_fixation sampling team: Clara Ruiz-González, Fran Cornejo, Nestor Arandia-Gorostidi, Elena Cerdán, and Guillaume the driver. And the #ISCA team: JB Raina, Jean-François Mangot, Rafel simolab, and Tony the driver.

#SUMMIT_Moorea - Day 17 The adventure has come to an end and we have to say goodbye to the amazing Moorea, where we have spent more than 2 weeks doing good science. We hope to be able to meet this island again soon 🌴🧪⛵️👨‍🔬👩‍🔬 #SUMMIT_ERCAdG European Research Council (ERC) ICM-CSIC

#SUMMIT_Moorea - Day 20 The personnel of the UC Berkeley Richard Gump Research Station in Mo'orea, always ready to help out, give a bonus to the Gump experience. Maururuu to them all!

Very exciting new opportunity at the lab! We're looking for a research scientist with a background in atmospheric and/or ocean sciences to be a key part of our Marine Biogeochemistry team delivering cutting-edge science. Find out more and apply: pml.ciphr-irecruit.com/Applicants/vac…

Ya está publicada la resolución definitiva de las becas #JAEINTRO2024 Becas JAE Intro CSIC sede.csic.gob.es/intro2024. Si te interesa la biologia marina, el estudio del cambio climático, y las soluciones basadas en la naturaleza mira la siguiente oferta: 👇👇👇 🌊🐠🐙🌊 👇👇👇

Still another paper, this time a review of the links between ocean plankton and biogeochemistry and marine aerosols and clouds. How we study the short-term impacts of the marine biota on climate. Part of a SOLAS promoted series of reviews on ocean-atmosphere interactions.