E. Rahav

Seasonal stratification regulates carbon allocation between particulate and dissolved pathways in the Gulf of Aqaba

Seasonal stratification regulates carbon allocation between particulate and dissolved pathways in the Gulf of Aqaba

Abstract. Water column stratification exerts fundamental control on microbial carbon cycling in oligotrophic areas of the ocean, yet its impact on the partitioning and fate of newly fixed carbon remains insufficiently resolved. Here, we investigated carbon fluxes in the Northern Red Sea (Gulf of Aqaba) from 5 cruises c...

Metabolic switching between inorganic and organic phosphorus sustains microbial activity in an ultraoligotrophic ocean

Phosphorus scarcity constrains microbial activity in parts of the oligotrophic ocean, yet the extent to which dissolved organic phosphorus (DOP) supports microbial P demand remains unresolved. Here, we quantified the concentrations, turnover times, and uptake kinetics of PO 4 and the DOP compound adenosine-tripho...