Understanding the bio-Optical properties of phytoplankton in the western Iberian coast, funded by Fundação para a Ciência e a Tecnologia (FCT) through a Post-doc grant.
Bio-optical characterization of phytoplankton groups
The main aim of this study was to understand the bio-optical properties of phytoplankton in the Western Iberia coast, according to size class. This was done by:
- 1) analyzing the relationship between the spectral signals of phytoplankton (i.e. the specific absorption coefficients) and chlorophyll a concentrations;
- 2) testing the usefulness of bio-optical models to differentiate phytoplankton size groups.
This study was carried out using data from 5 areas: Gorrigen seamount, Nazaré canyon, Aveiro, Cascais and CSA group (Figure 1).
Figure 1 – Map of the Western Iberian coast with sampling stations identified in the areas of Nazaré, Sines and Cascais/Lisbon Bay.
Some preliminar results showing the model obtained to describe the chlorophyll a concentrations and fractions of three size classes: microplankton, nanoplankton and picoplankton (Figure 2).
Figure 2 – Three component model for each phytoplankton component (3-micro; 2-nano; and 1-picoplankton), plotted against the total chlorophyll a concentration (A to D). The model obtained to represent data is also presented. The correspondent fractions of each component are also represented agains the total chl a concentration (E to H). Legend of data: green – Cascais; black – Nazaré; light blue – HABSpot(Surface); dark blue – HABSpot(DCM); magenta – Gorringe; red – CSA.
The Centro de Oceanografia (CO) is a multidisciplinary research unit of the national R&D system, whose main host institution is the Faculty of Sciences of the University of Lisbon (FCUL), the other host institution of this Centre being the University of Évora (UE).
The main research lines of the Centro de Oceanografia are the following:
The Faculty of Sciences of the University of Lisbon was established by decree of 19th April 1911. From its establishment until 1985, the year the Faculty was transferred to the new facilities at Campo Grande, the Faculty of Sciences was based in the building where the Polytechnic School (Escola Politécnica) used to be. Before this School, since the beginning of the 17th century, other cultural and scientific preeminent institutions were settled there.