Collated for the purposes of intercalibrating the outputs of the Northern GIG WFD lakes macroinvertebrate tools. This dataset is specific to the intercalibration of the tools assessing lake acidification. Includes data from a large number of lakes from across the GIG region, provided by participating countries. The dataset includes raw invertebrate data and physico-chem data in addition to some typological information. Note that not all the data from this dataset will be made available to BioFresh science work packages or the data portal. More information on this dataset can be found in the Freshwater Metadatabase - BFE_42 (http://www.freshwatermetadata.eu/metadb/bf_mdb_view.php?entryID=BFE_42).

This dataset contains information about 128 river catchments placed in Wales, compiled over 30 years through different research projects. The majority of these catchments were surveyed at three time points over this period (one spring sample per year at 1984, 1995, 2012/13). A small subset of 14 streams (Brianne streams) have been surveyed continously from 1981-82 to 2014 (one spring sample per year). This dataset contains biological information about aquatic macroinvertebrates (genus and species level), water birds (European dipper) and fish (species level, commercial and non-commercial). As environmental descriptors, GIS catchment information (elevation, geomorphology, lithology), water chemistry (pH, nutrients, suspended solids, etc.) and climatic information are available. More information on this dataset can be found in the Freshwater Metadatabase - MARS_19 (http://www.freshwatermetadata.eu/metadb/bf_mdb_view.php?entryID=MARS_19).