Benthic macrophyte samples were collected from 51 sites along the Slovenian rocky coast. The aim of the study was three-fold: (1) to select sampling points for a surveillance monitoring programme, (2) to confirm water body boundaries proposed by the Slovenian Ministry of Environment and Spatial Planning and (3) to assess the preliminary Ecological Status Classes (ESC) within the European Water Framework Directory.

Cymodocea nodosa sampling in the Slovenian coast in 2009-2010. This dataset contains length of the photosynthetic part of the leaf and abundance of Cymodocea nodosa. 10 samples were collected at each of the 10 locations. In each sample, the length of the photosynthetic part was measured for 60 adult/intermediate leaves for a correct assessment of the Mediterranean meadows which is of great importance for the implementation of the Water Framework Directive (WFD), the Marine Strategy Framework Directive (MSFD), and the Habitat Directive (HD)

The database contains abundance of main meiofaunal groups and of harpacticoid copepods separately. There are also data present from a recolonisation study.