Community stability is related to animal diversity change

Understanding the drivers of community stability in times increasing anthropogenic pressure is an urgent issue. Biodiversity known to promote stability, but studies biodiversity–stability relationship rarely consider full complexity biodiversity change. Furthermore, finding generalities that hold across taxonomic groups and spatial temporal scales remains challenging because most investigations have narrow taxonomic, spatial, scopes. We used organismal data collected through National Ecological Observatory Network (NEON) at sites contiguous United States evaluate linkages between change for four groups: small mammals, ground beetles, fish, freshwater macroinvertebrates. defined as constancy aggregate species' abundance. quantified (1) dissimilarity functional composition species replacement richness components (2) abundance distributions captured by rank, richness, evenness. found increased with contribution overall all groups, declined This consistent notion fluctuations can help stabilize properties. also was highest when either lower or higher than expected given reshuffling each community's composition. suggests long-term result from functionally similar assemblages high reshuffling. On contrary, uniqueness fluctuating compensates drive stabilization Our study provides initial assessment illustrates utility fine resolution ecosystems biomes understand general mechanisms underlying relationships.