Andreia Tracana

University of Lisbon | UL · MARE-Marine and Environmental Sciences Centre

The Atlantic Meridional Transect (AMT) program (www.amt-uk.org) provides the perfect opportunity to observe the phytoplankton community size structure over a long latitudinal transect 50 o N to 50 o S, thereby covering the most important latitude-related basin-scale environmental gradients of the Atlantic Ocean. This work presents cell abundance da...

The Western Iberian Coast (WIC) is characterized by a dynamic coastal upwelling system with interactions between oceanographic features and continental river run‐off. The present study investigates the spatio‐temporal variability in the concentrations of Chlorophyll a (Chl a ) and turbidity, and their relationships with physical and other biogeoche...

Portugal’s vast coast has great socioeconomic potential, characterized by high hydrodynamic and geomorphologic diversity. The growth of phytoplankton, the base of the marine food chain, is shaped by environmental characteristics. The goal was to evaluate the main drivers of phytoplankton dynamics and identify coastal areas with high biomass. Four s...

A global in situ data set for validation of ocean colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI) is presented. This version of the compilation, starting in 1997, now extends to 2021, which is important for the validation of the most recent satellite optical sensors such as Sentinel 3B OLCI and NOAA-20 VIIRS. The data s...

In situ and satellite data are used to document the spatial and temporal variability patterns of the phytoplankton pigments off W Iberia. The in situ data was obtained during the fisheries monitoring surveys carried out by the Portuguese Institute for the Ocean and Atmosphere (IPMA) mainly in the frame of the European Union Data Collection Framewo...

A global in-situ data set for validation of ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI) is presented. This version of the compilation, starting in 1997, now extends to 2021, which is important for the validation of the most recent satellite optical sensors such as Sentinel 3B OLCI and NOAA-20 VIIRS. The data s...

The phytoplankton comprises different shapes and sizes, having different impacts on the biogeochemical cycles. The development of models for Phytoplankton Size Classes ( is based mainly on the empirical relationship between marker pigments and chlorophyll a The present study sought to investigate the PSC's spatial variability along the Portuguese c...

Tagus estuary (Portugal) is one of the largest estuaries in Europe, a example for the need for achiev- ing the sustainable use of ecosystems, as it is by Lisbon, the capital city, and it must provide a diversity of services: Porto de Lisboa, industrial, agricultural, fisheries and tourism activities, whilst comprising a natural park. A long-term...

The present work summarizes main results from the long-term series and focuses on the last three years, with the aim of evaluating patterns and ranges of chlorophyll a and turbidity related parameters, namely suspended particulate matter, in water light profiles, in order to monitor these parameters by satellite remote sensing, namely using the new...

Tagus estuary (Portugal) is one of the largest estuaries in Europe, a good example for the need for achieving the sustainable use of ecosystems, as it is by Lisbon, the capital city, and it must provide a diversity of services, comprehending the Port of Lisbon, industrial, agricultural, fisheries and tourism activities, whilst comprising a natural...

The intertidal is one of the most explored areas due to its easy access, environmental diversity and to the easily observed organisms’ richness. The environmental conditions vary a lot, therefore the organisms need specific adaptations to be able to live in such harsh conditions. The Azorean intertidal consists of high and steep cliffs with rocky p...

O Arquipélago dos Açores é um local, por excelência, rico em campos geotérmicos de alta entalpia devido à sua localização, perto da crista médio-atlântica levando a que seja explorado como energia renovável. Para essa produção são utilizados fluidos que, sendo provenientes do interior da Terra, contêm metais pesados podendo assim aumentar a sua qua...