Spatiotemporal patterns of macroinvertebrate assemblages across alpine streams with contrasted thermal regime

The database contains biological and environmental data collected during a survey carried out across 5 stream sites of the Serio watershed (Orobic Alps, Italy): GU, GD, OU, OD, NN.

At each stream site, a monthly sampling was carried out during a one-year campaign, from June 2020 to May 2021, providing 58 samples (12 months*5 sites with two missing samples in NN May and OU February). Macroinvertebrates were sampled with a Surber net (0.10 m2, 500 µm mesh). For each taxon the number of individuals/1 m2 collected at each sampling is reported.

-Dictyogenus_f. refers to Dictyogenus fontium

-Perlodes_i. refers to Perlodes intricatus

-Epeorus_al. refers to Epeorus alpicola 

-Epeorus_as. refers to Epeorus assimilis (or sylvicola depending on the references)

-Serratella_i. refers to Serratella ignita

-Elmidae_A refers to Elmidae adults

-Elmidae_L refers to Elmidae larvae

-Scirtidae_L refers to Scirtidae larvae

Moreover we reported the environmental variables measured at each sampling:

-HABITAT (Stream habitat availability)

-DISTURBANCE (Flood disturbance, %)

-ALGAE (Autochtonous biomass, g/m2)

-CE (electrical conductivity, uS/cm)

-COD (Chemical oxygen demand, mg/l)

-pH

-TMean (daily mean water temperature of the antecedent 30 days, °C)

-CPOM (coarse particulate organic matter, g/m2)

-O2 (oxygen saturation, %)

-DO (dissolved oxygen, mg/l)

NNO3 (nitric nitrogen, mg/l)

TAmp (annual water temperature variability, °C)