Selected biotic data.

<p>S—species richness; J–equitability; H’—Shannon Index; FD—foraminifera density (n° g^-1); TC—Total Coliforms; FE—Faecal Enterococci (NPP/100mg) and; TMC—Total Mesophyllic Counts (CFU g^-1).</p><p>Selected biotic data.</p

Distribution maps of bacterial counts: a) total coliforms (TC; net primary production per 100 mg or NPP/100 mg); b) fecal enterococci (FE; NPP/100 mg), and c) total mesophilic counts (TMC; colony-forming units per gram—cfu/g).

<p>Distribution maps of bacterial counts: a) total coliforms (TC; net primary production per 100 mg or NPP/100 mg); b) fecal enterococci (FE; NPP/100 mg), and c) total mesophilic counts (TMC; colony-forming units per gram—cfu/g).</p

Distribution maps of: a) Cha—Chlorophyll a (Cha; mg/m³) and; b) δ¹³C (<i>‰</i>) values.

<p>Distribution maps of: a) Cha—Chlorophyll a (Cha; mg/m³) and; b) δ¹³C (<i>‰</i>) values.</p

Selected sedimentological data.

<p>SMGS–sediment mean grain size (μm); CaCO₃ (%); TOC (%), TN—total nitrogen (%); C/N ratio; Chlorophyll a (Chl <i>a</i>; mg/m³); δ13C (‰; VPDB); AVS (μg g^-1); SEM/AVS ratio.</p><p>Selected sedimentological data.</p

Distribution maps of: a) total organic carbon (TOC; %); b) calcium carbonate content (CaCO₃; %); c) acid volatile sulfides concentrations (AVS; μg/g); d) simultaneous extracted metals and AVS ratio (SEM/AVS).

<p>Distribution maps of: a) total organic carbon (TOC; %); b) calcium carbonate content (CaCO₃; %); c) acid volatile sulfides concentrations (AVS; μg/g); d) simultaneous extracted metals and AVS ratio (SEM/AVS).</p

Distribution maps of: a) pH; b) redox potential (Eh) (mV); c) dissolved oxygen (DO) content in surface sediments (mg/l); d) sediment mean grain size (SMGS; μm); e) phyllosilicates (%); f) ferrous berthierine (f.; %); g) kaolinite (%); h) magnetic susceptibility (SI unities).

<p>Distribution maps of: a) pH; b) redox potential (Eh) (mV); c) dissolved oxygen (DO) content in surface sediments (mg/l); d) sediment mean grain size (SMGS; μm); e) phyllosilicates (%); f) ferrous berthierine (f.; %); g) kaolinite (%); h) magnetic susceptibility (SI unities).</p

a) Study area in the Bizerte Lagoon (adapted from OTC, 1992, Map of Bizerte Lagoon office de la topographie et de la cartographie de Tunisie). The studied stations are labeled with numbers. The main towns and streams are indicated. b) Photo of the surface water column showing the cnidarian bloom. c) Photo showing suspended structures used in mollusks culture.

<p>a) Study area in the Bizerte Lagoon (adapted from OTC, 1992, Map of Bizerte Lagoon office de la topographie et de la cartographie de Tunisie). The studied stations are labeled with numbers. The main towns and streams are indicated. b) Photo of the surface water column showing the cnidarian bloom. c) Photo showing suspended structures used in mollusks culture.</p

Sand, mud and granule percentage in samples collected along the São Sebastião Channel.

<p>Sand, mud and granule percentage in samples collected along the São Sebastião Channel.</p

Müller’s geoaccumulation index defining seven classes of sediment quality [62].

<p>Müller’s geoaccumulation index defining seven classes of sediment quality [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0191446#pone.0191446.ref062" target="_blank">62</a>].</p

Values of Eh and C/S (TOC/TS) ratio of samples collected along the São Sebastião Channel (SSC).

<p>The meaning of C/S ratio values (modified from <a href="http://www.ozcoasts.gov.au/" target="_blank">http://www.ozcoasts.gov.au</a>) is also presented. Symbols are proportional to C/S ratio values.</p