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. 2015 Mar 25;10(3):e0120605. doi: 10.1371/journal.pone.0120605

Fig 1. Site Characterization.

Fig 1

(A) Map of sampling locations. Station 3 (red) is the North Alex Mud Volcano. Maps of sampling sites were prepared using the ODV software package [38]. (B) CTD profile of Temperature and salinity for site 1 (depth 1230 m). Temperature measured in °C is shown in red. Salinity measured in Practical Salinity Units (psu) is shown in green. (C) Annotated T-S plot with data from the CTD profile of site 1. Three distinct water masses are visible below the surface mixed layer. The AW is characterized by water with salinities between 38.6 and 38.8 psu and temperatures between 16–18°C. The LIW is characterized by high salinity around 39.2 psu and temperatures around 16°C. The EMDW is characterized by waters with salinities near 38.8 and temperatures near 14°C. Visualization of CTD data was performed in R[39] using the oce package [37]. (D) Cell counts as determined by AODC and PLFA as a function of depth. At each station samples were taken in each of the three water masses. Samples from each station are represented by different symbols. Cell counts as determined by AODC are indicated by closed symbols. Cell numbers as estimated by PLFA measurements are shown by open symbols. The depths corresponding to each water mass are marked on the right side of the plot. Biomass is reported at cells/ml of seawater.