Knowledge of species\u2019 functional traits is essential for understanding biodiversity patterns, predicting the impacts of global environmental changes, and assessing the efficiency of conservation measures. Bats are major components of mammalian diversity and occupy a variety of ecological niches and geographic distributions. However, an extensive compilation of their functional traits and ecological attributes is still missing. Here we present EuroBaTrait, the most comprehensive and up-to-date trait database covering 47 European bat species. The database includes data on 118 traits including genetic composition, physiology, morphology, acoustic signature, climatic associations, foraging habitat, roost type, diet, spatial behaviour, life history, pathogens, phenology, and distribution. We compiled the bat trait data obtained from three main sources: (i) a systematic literature and database search, (ii) unpublished data from European bat experts, and (iii) observations from large-scale monitoring programs. EuroBaTrait is designed to provide an important data source for comparative and trait-based analyses at the species or community level. The database also exposes knowledge gaps in species, geographic and trait coverage, highlighting priorities for future data collection.
\nThe database consists of 16 tables linked by unique identifiers. The \u201cTaxon\u201d table includes the full scientific name and family of all taxa. The \u201cTrait description\u201d table represents the metadata, in which we describe the different traits (name, category, unit, data type) and define each trait. The \u201cTrait reference\u201d table lists the full references used to build the database. The database also includes one table per trait category (e.g. \u201cAcoustic signature\u201d) with the core observation values and associated information. \u00a0\u00a0
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