The dataset contains taxonomic and body size data of the benthic macroinvertebrate communities collected in the hydrographic basin of Flumini Mannu - Cixerri (Sardinia, Italy) during the years 1992-1993. Sampling sites were located along two main basins Flumini Mannu and Cixerri, and other smaller coastal basins. Data refer to 98 taxa and 14566 individuals.

The dataset contains taxonomic and morphological data of the macroinvertebrates community of a Nationally designated area in South Italy (Brindisi, Apulia). Data refer to 19504 individuals.

The dataset contains abundance and body size data of benthic macroinvertebrates collected in the river Tirso (Sardinia, Italy) during the years 1998-1999. Data refer to 143 taxa and 48248 individuals.

The dataset contains abundance and body size data of the benthic macroinvertebrates community of the Lesina lagoon. Data refer to 21 taxa (15 species, 2 genus, 2 family, 2 subclass) and 9595 individuals.

The dataset contains abundance and body size data of benthic macroinvertebrates collected in the LTER site Alimini (Apulia, Italy). Data refer to 51 taxa and 35504 individuals.

The dataset contains occurence data for 184 macroinvertebrate communities in Mediterranean and Black Sea transitional water ecosystems. Dataset includes a species list, obtained by species lists reported in published papers or books (89.24%) and grey literature or unpublished data collected by the authors (10.76%). It includes data on 1721 macroinvertebrate species.

The dataset contains abundance and body size data of benthic macroinvertebrate community of the Acquatina lagoon (Apulia, Italy). Data refer to 50 taxa and 14735 individuals.

The dataset contains abundance and body size data of benthic macroinvertebrates collected in the river Tirso (Sardinia, Italy) during the years 1994-1995. Data refer to 99 taxa and 27393 individuals.

The dataset contains abundance and body size data of benthic macroinvertebrates collected in the LTER site Alimini (Apulia, Italy). Data refer to 26 taxa and 17895 individuals.

The dataset contains taxonomic and body size data of the benthic macroinvertebrate communities collected in the abandoned mining area of Ingurtosu-Montevecchio (Sardinia, Italy) during the years 1993-1994. Sampling sites were located along two main streams Rio Roia Cani-Piscinas and Rio Naracauli, and outside the mining area. Data refer to 34 taxa and 2033 individuals.