Global biodiversity is affected by numerous environmental drivers. Yet, the extent to which global environmental changes contribute to changes in local diversity is poorly understood. We investigated biodiversity changes in a meta‐analysis of 39 resurvey studies in European temperate forests (3988 vegetation records in total, 17–75 years between the two surveys) by assessing the importance of (i) coarse‐resolution (i.e., among...

The interstitial meiofauna of sand beaches includes many species that are regarded as cosmopolites, on the basis of records from various sites throughout the world. There is a long‐standing debate about the causes of such a distribution, but for most of these species it is still questionable whether they are in fact true species or ‘merely’ complexes of cryptic species. Here genetic differentiation is examined within and betwe...