The orthophotomaps at a scale of 1:5000 of Desertas Islands were made from a digital aerial survey with acquisition of digital photographs with a resolution of 30 cm. The flights were performed between July and September 2010 in three missions.

The orthophotomaps at a scale of 1:5000 of Madeira Islands were made from a digital aerial survey with acquisition of digital photographs with a resolution of 30 cm. The flights were performed between July and September 2010 in three missions.

Within Portugal's National Biological Sampling Project (PNAB) a set of activities are conducted in the collection, management and use of biological data, collected from the registered commercial fleet in mainland Portugal (fisheries-dependent data) and several research surveys (independent fisheries data). These activities allow the assessment of the state of fishery resources, population structure, distribution and abundance of resources, diversity and dynamics of biological communities associated with the fishery resources and biological studies (growth, reproduction). This resource shows the geographic distribution of atlantic mackerel abundancy index (nr. individuals/hour) registered during the PELAGO08 acoustic campaign in April 2008.

Within Portugal's National Biological Sampling Project (PNAB) a set of activities are conducted in the collection, management and use of biological data, collected from the registered commercial fleet in mainland Portugal (fisheries-dependent data) and several research surveys (independent fisheries data). These activities allow the assessment of the state of fishery resources, population structure, distribution and abundance of resources, diversity and dynamics of biological communities associated with the fishery resources and biological studies (growth, reproduction).This resource shows the geographic distribution of european hake abundancy index (nr. individuals/hour) registered during the DEMERSAL2010 campaign in September 2010.

Within Portugal's National Biological Sampling Project (PNAB) a set of activities are conducted in the collection, management and use of biological data, collected from the registered commercial fleet in mainland Portugal (fisheries-dependent data) and several research surveys (independent fisheries data). These activities allow the assessment of the state of fishery resources, population structure, distribution and abundance of resources, diversity and dynamics of biological communities associated with the fishery resources and biological studies (growth, reproduction).This resource shows the geographic distribution of arrow shrimp abundancy index (nr. individuals/hour) registered during the CRUSTACEOS2014 campaign in June 2014.

Within Portugal's National Biological Sampling Project (PNAB) a set of activities are conducted in the collection, management and use of biological data, collected from the registered commercial fleet in mainland Portugal (fisheries-dependent data) and several research surveys (independent fisheries data). These activities allow the assessment of the state of fishery resources, population structure, distribution and abundance of resources, diversity and dynamics of biological communities associated with the fishery resources and biological studies (growth, reproduction).This resource shows the geographic distribution of european hake abundancy index (nr. individuals/hour) registered during the DEMERSAL2008 campaign in September 2008.

Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.