PHOSPHOTRAC - What happens to atmospheric organic phosphorus?

SPeciation, sources, and fate of AtmospHeric Organic phoSPHOrus over The MediteRranean Sea: A missing piece of the P Cycle?

Responsible : kalliopi Violaki - MIO

Project funded by the European Union

Phosphorus is a critical nutrient affecting primary productivity in large areas in oceanic ecosystems. The principal source of externally supplied nutrients in many marine ecosystems is the atmospheric deposition. As the ocean is an important sink of atmospheric CO2, phosphorus through productivity limitation can indirectly affect global warming by removing more CO2 from the atmosphere.

The importance of atmospheric organic P as a potential pool of bioavailable P is not widely recognized. It is important to note that the only available data in the literature are the atmospheric measurements of phosphate and total phosphorus, while there are almost no data about the organic P, especially over Mediterranean Sea (MS).

The main goal of the PHOSPHOTRAC project is to shed light on the atmospheric organic P chemical identification by proposes new methodologies and modern instrumentation. Most of them are implemented for the first time in atmospheric samples, and they will provide new insights into a nutrient cycle of P in MS. Organic P-rich compounds of interest are DNA, RNA, ATP, AMP, ADP, phytic acid, phospholipids, degradation products of chemical weapons, organophosphate ester flame retardants and organophosphorus pesticides.

The proposed project is highly interdisciplinary as it combines analytical chemistry, biology, and atmospheric modeling in order to address a question of extreme ecological importance related to climate change in the MS.