TY - JOUR
T1 - Geographical gradients of dissolved Vitamin B12 in the Mediterranean Sea
AU - Bonnet, S.
AU - Tovar-Sánchez, A.
AU - Panzeca, C.
AU - Duarte, Carlos
AU - Ortega-Retuerta, E.
AU - Sañudo-Wilhelmy, S.A.
PY - 2013
Y1 - 2013
N2 - Most eukaryotic phytoplankton require vitamin B12 to grow. However, the cycling of this organic growth factor has received substantially less attention than other bioactive substances such as trace metals in the marine environment. This is especially true in the Mediterranean Sea, where direct measurements of dissolved vitamins have never been reported. We report here the first direct measurements of dissolved vitamin B12 across longitudinal gradients in Mediterranean waters. The range of vitamin B12 concentrations measured over the whole transect was 0.5-6.2 pM, which is slightly higher than the range (undetectable-4 pM) of ambient concentrations measured in other open ocean basins in the Pacific and Atlantic oceans. The concentrations measured in the western basin were significantly higher (p <0.05) than those of the eastern basin. They were positively correlated with chlorophyll concentrations in the most western part of the basin, and did not show any significant correlation with any other biological variables in other regions of the sampling transect. © 2013 Bonnet, Tovar-Sánchez, Panzeca, Duarte, Ortega-Retuerta and Sañudo-Wilhelmy.
AB - Most eukaryotic phytoplankton require vitamin B12 to grow. However, the cycling of this organic growth factor has received substantially less attention than other bioactive substances such as trace metals in the marine environment. This is especially true in the Mediterranean Sea, where direct measurements of dissolved vitamins have never been reported. We report here the first direct measurements of dissolved vitamin B12 across longitudinal gradients in Mediterranean waters. The range of vitamin B12 concentrations measured over the whole transect was 0.5-6.2 pM, which is slightly higher than the range (undetectable-4 pM) of ambient concentrations measured in other open ocean basins in the Pacific and Atlantic oceans. The concentrations measured in the western basin were significantly higher (p <0.05) than those of the eastern basin. They were positively correlated with chlorophyll concentrations in the most western part of the basin, and did not show any significant correlation with any other biological variables in other regions of the sampling transect. © 2013 Bonnet, Tovar-Sánchez, Panzeca, Duarte, Ortega-Retuerta and Sañudo-Wilhelmy.
U2 - 10.3389/fmicb.2013.00126
DO - 10.3389/fmicb.2013.00126
M3 - Article
C2 - 23772225
VL - 4
SP - 10pp
JO - Frontiers in Microbiology
JF - Frontiers in Microbiology
SN - 1664-302X
IS - 126
ER -