The marphy data frame has 68 rows (stations) and 4 columns.
They are seawater measurements at a deep of 3 to 7 m at the same 68 stations as marbio.
data(marphy)This data frame contains the following columns:
Seawater temperature in °C
Salinity in g/kg
Fluorescence of chlorophyll a
Excess of volumic mass of the seawater in g/l
This dataset corresponds to a single transect sampled across the Ligurian Sea front in the Mediterranean Sea, between Nice (France) and Calvi (Corsica). The transect extends from the Cap Ferrat (close to Nice) to about 65 km offshore in the direction of Calvi (along a bearing of 123°). 68 regularly spaced measurements where recorded. They correspond to the stations where zooplankton was collected in the marbio dataset. Water masses in the transect across the front where identified as:
Peripheral zone
D1 (divergence) zone
C (convergence) zone
Frontal zone
D2 (divergence) zone
Central zone
Fromentin, J.-M., F. Ibanez & P. Legendre (1993) A phytosociological method for interpreting plankton data. Marine Ecology Progress Series, 93:285-306.
marbio