ReSurveyEurope is an initiative within the European Vegetation Archive (EVA) that aims at mobilizing vegetation-plot data with repeated measurements over time, including both data from permanent plots and resurveys of vegetation survey plots. It aims at international collaboration towards a nuanced and robust assessment of the temporal trends in plant diversity in Europe.
ReSurveyEurope includes fine-grained biodiversity data of vascular plants, bryophytes or lichens (e.g. relevés, plots, transects) from Europe, including species occurrence (and ideally also abundance) in at least two repeated surveys in different years conducted using identical or at least similar and comparable methods. Data may be from any vegetated habitat, including terrestrial and aquatic.