Macrozoobenthos of marine waters in mainland Portugal collected in March and September 2010

A macrozoobenthos species list is provided, based on datasets originated from infra and circalittoral soft sediment samples (4 to 120 m depth) collected in the marine waters from north to south of mainland Portugal. Species composition, density and wet weight biomass are provided. The data were collected in the framework of the of the EEMA Programme, whose aim was the Ecological Assessment of Water Masses in mainland Portugal.
The samples were collected in triplicate in georeferenced sites with a 0.1 m2 Smith-McIntyre grab, in March and September 2010. In the laboratory, the macrofauna was identified to species level. Species density and wet weight biomass are provided. Sediment grain size distribution and organic matter content were also determined per sampling site. This work was carried out in the framework of the EEMA Programme for the assessement of the Ecological State of Marine Waters in mainland Portugal.