R_max, E_Rmax and γ values per date and station.

<p>R_max is in mol e⁻ mol C⁻¹, E_Rmax is in µmol photons m⁻² s⁻¹ and γ is in mol e⁻ mol C⁻¹ (µmol photons m⁻² s⁻¹)⁻¹.</p

Map of the sampling area.

<p>Map of the sampling area.</p

Latitude-time distributions of a_ph, the dinoflagellate:diatom ratio, ETR_max and P_max.

<p>(A) a_ph in m⁻¹, (B) the dinoflagellate:diatom ratio (C) ETR_max the maximum photosynthetic capacity (maximal electron transport rate – ETR_max) in µmol e⁻ L⁻¹ h⁻¹ and (D) P_max maximum estimated carbon incorporation using the <i>Sim_ETR2</i> model in µmol C L⁻¹ h⁻¹.</p

Principal Component Analysis highlighted the link between physicochemical and biological parameters and the 6 different curve shapes.

<p>(A) Histogram of eigenvalues, (B) Principal Component Analysis (PCA) plot of factor loadings in the plane defined by the two first axes. White labels refer to active variables and grey labels to illustrative variables, (C) Sample ordination plot. A, B, C, D, E and F refer to groups defined by Ward’s clustering.</p

Linear correlation coefficients (Pearson) between ΔP and physicochemical and biological parameters.

<p>PAR: incident light in µmol photons m⁻² s⁻¹, Temp: temperature in °C, DIP concentrations in µmol L⁻¹, DIN concentrations in µmol L⁻¹, DSi concentrations in µmol L⁻¹, Chl<i>a</i> biomass in µg L⁻¹, SPM concentrations in mg L⁻¹ and F_v/F_m, and dinoflagellate:diatom ratio.</p

Observed ¹³C incorporation (P_obs) plotted against estimated carbon incorporation by the equation <i>Sim_ETR1</i>.

<p>P_simETR1 = 0.1503+0.0496 * ln(ETR). The dotted line represents the linear regression (P_obs  = 1 * P_simETR1).</p

Relationships between the ETR/P_obs ratio and light showing the different shaped curves obtained.

<p>(A) in August 2010 at station 9 corresponding to a Type A shape, (B) in October 2010 at station 7 corresponding to a Type B, (C) in June 2010 at station 6 corresponding to a Type C, (D) in May 2010 at station 5 corresponding to a Type D, (E) in March 2010 at station 4 corresponding to a Type E and (F) in March 2010 at station 5 corresponding to a Type F.</p

Observed ¹³C incorporation (P_obs) plotted against the electron transport rate (ETR).

<p>The dotted line represents the logarithm regression (P_obs  = 0.1503+0.0496 * ln(ETR)).</p

Tree topology obtained by Ward’s clustering performed on R_max, E_Rmax and γ.

<p>Tree topology obtained by Ward’s clustering performed on R_max, E_Rmax and γ.</p

Example of relationship between ETR/P_obs ratio and light.

<p>R_max is the maximum value of ETR/P_obs, E_Rmax is the light intensity at which R_max is measured and γ the initial slope of the curve.</p