Abstract
Introduction to project DUNE, a DUst experiment in a low Nutrient, low chlorophyll Ecosystem
Highlights
Introduction to projectDUNE, a DUst experiment in a low Nutrient, low chlorophyll EcosystemC
Within the DUNE project, we proposed to study the effect of atmospheric input on the oligotrophic Mediterranean ecosystem through artificial mineral dust additions over large in situ mesocosms representative of a significant body of the surface waters in perfectly controlled conditions and taking into account the vertical dimension of the processes involved after dust deposition: such an approach is the strength of the project and was possible thanks to the strong and effective partnership between atmospheric and oceanic scientist partners of DUNE (Guieu et al, 2010b)
Our experiments rely on seeding of northern African mineral dust in mesocosms in order to reproduce an intense deposition event and to follow its biogeochemical impact in marine surface waters over about a week
Summary
Nutrient cycling controls in part the efficiency of the biological carbon pump through which CO2 is consumed in ocean surface waters and transported to the deep sea as sinking particulate organic carbon (Moore et al, 2013). In spite of previous efforts, answers to the question of the biological response in LNLC regions and, in particular, in the Mediterranean Sea to atmospheric inputs are still fragmented To cover this gap, within the DUNE project, we proposed to study the effect of atmospheric input on the oligotrophic Mediterranean ecosystem through artificial mineral dust additions over large in situ mesocosms representative of a significant body of the surface waters in perfectly controlled conditions and taking into account the vertical dimension of the processes involved after dust deposition: such an approach is the strength of the project and was possible thanks to the strong and effective partnership between atmospheric and oceanic scientist partners of DUNE (Guieu et al, 2010b)
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