FN Archimer Export Format
PT J
TI Longitudinal variability of the biogeochemical role of Mediterranean aerosols in the Mediterranean Sea
BT 
AF TERNON, E.
   GUIEU, C.
   RIDAME, C.
   L'HELGUEN, S.
   CATALA, P.
AS 1:1,2;2:1,2;3:3;4:4;5:5,6;
FF 1:;2:;3:;4:;5:;
C1 INSU, CNRS Observ Oceanol Villefranche Sur Mer, UMR7093, Lab Oceanog Villefranche Mer, Villefranche Sur Mer, France.
   Univ Paris 06, UMR7093, LOV, Observ Oceanol Villefranche Sur Mer, Villefranche Sur Mer, France.
   Univ Paris 06, UMR7159, LOCEAN, Paris, France.
   IUEM, UBO CNRS IRD, UMR6539, Lab Sci Environm Marin, F-29280 Plouzane, France.
   Univ Paris 06, UMR7621, LOMIC, Observ Oceanol, F-66650 Banyuls Sur Mer, France.
   CNRS, Observ Oceanol, LOMIC, UMR7621, F-66650 Banyuls Sur Mer, France.
C2 OBSERV OCEANOL VILLEFRANCHE, FRANCE
   OBSERV OCEANOL VILLEFRANCHE, FRANCE
   IPSL, FRANCE
   UBO, FRANCE
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
IF 3.859
TC 40
TU Centre national de la recherche scientifique
   Institut de recherche pour le développement
   Institut français de recherche pour l'exploitation de la mer
   Muséum national d'histoire naturelle
   Service Hydrographique et Océanographique de la Marine
   Université Pierre et Marie Curie
   Université de Bretagne Occidentale
   Université de Bretagne-Sud
UR https://archimer.ifremer.fr/doc/00133/24399/22405.pdf
LA English
DT Article
CR BOUM
BO L'Atalante
AB The Mediterranean Sea is a semi-enclosed basin characterized by a strong thermal stratification during summer during which the atmosphere is the main source of new nutrients to the nutrient-depleted surface layer. From aerosol sampling and microcosm experiments performed during the TransMed BOUM cruise (June-July 2008) we showed that: (i) the Mediterranean atmosphere composition (Al, Fe, P) was homogeneous over similar to 28 degrees of longitude and was a mixture with a constant proportion of anthropogenic contribution and a variable but modest contribution of crustal aerosols. This quite stable composition over a one month period and a long transect (similar to 2500 km) allowed to define the Mediterranean atmospheric "background" that characterizes the summer season in the absence of major Saharan event and forest fires, (ii) primary production significantly increased at all tested stations after aerosols addition collected on-board and after Saharan dust analog addition, indicating that both additions relieved on-going (co)-limitations. Although both additions significantly increased the N(2) fixation rates at the western station, diazotrophic activity remained very low (similar to 0.2 nmol NL(-1) d(-1)), (iii) due to the presence of anthropogenic particles, the probable higher solubility of nutrients associated with mixed aerosols (crustal + anthropogenic contribution), conferred a higher fertilizing potential to on-board collected aerosol as compared to Saharan dust analog. Finally, those experiments showed that atmospheric inputs from a mixed atmospheric event ("summer rain" type) or from a high-intensity Saharan event would induce comparable response by the biota in the stratified Mediterranean SML, during summer.
PY 2011
SO Biogeosciences
SN 1726-4170
PU Copernicus Gesellschaft Mbh
VL 8
IS 5
UT 000291003200003
BP 1067
EP 1080
DI 10.5194/bg-8-1067-2011
ID 24399
ER

EF